A bleed air control system for an aircraft, a control method thereof, and an aircraft

Abstract

The application provides an air control system of an aircraft, a control method of the air control system and the aircraft. The system comprises an air control subsystem and a control device. The air control subsystem comprises a pressure sensing device, a temperature sensing device and an adjusting valve arranged on a gas flow pipeline. The pressure sensing device is used for sensing air pressure in the gas flow pipeline. The temperature sensing device is used for sensing air temperature in the gas flow pipeline. The control device comprises a first control module and a second control module, which are used for acquiring temperature information of the temperature sensing device and pressure information of the pressure sensing device respectively. The first control module controls the adjusting valve to rotate according to at least one of the pressure information and the temperature information, so as to realize air temperature or air pressure adjustment in the gas flow pipeline. The application can greatly reduce the probability of simultaneous failure of the two control modules caused by common mode factors, and further improves the safety performance of the system.

Description

Technical Field

[0001] This application relates to the field of aircraft technology, and in particular to an air bleed control system for an aircraft, its control method, and the aircraft itself. Background Technology

[0002] The bleed air control system delivers compressed air generated by the engine or other means to the aircraft's air conditioning system, anti-icing system, and other systems that require air supply. Specifically, the bleed air control system uses a control module to regulate the temperature and pressure of the high-temperature, high-pressure air generated by the engine or other means to meet the needs of downstream air-consuming systems. However, existing bleed air control systems have only one control path. If this control path fails, the entire bleed air control system will fail, leading to a series of serious consequences such as overheating, overpressure, and leakage. Summary of the Invention

[0003] This application provides an air bleed control system for an aircraft, its control method, and the aircraft itself, to solve safety problems such as overheating, overpressure, and leakage that are easily caused by the failure of a single control path in the prior art.

[0004] In a first aspect, this application provides an air bleed control system for an aircraft, including an air bleed subsystem and control equipment;

[0005] The gas venting subsystem includes a pressure sensing device, a temperature sensing device, and a regulating valve installed on the gas flow pipeline;

[0006] The pressure sensing device is used to sense the bleed pressure in the gas flow pipeline;

[0007] The temperature sensing device is used to sense the bleed air temperature in the gas flow pipeline;

[0008] The control device includes a first control module and a second control module, used to acquire temperature information from the temperature sensing device and pressure information from the pressure sensing device, respectively; the first control module controls the rotation of the regulating valve according to at least one of the pressure information and the temperature information, so as to realize the regulation of the bleed air temperature or bleed air pressure in the gas flow pipeline.

[0009] Furthermore, the pressure information includes first pressure information and second pressure information, and the temperature information includes first temperature information and second temperature information;

[0010] The first pressure information and the first temperature information are obtained by the first control module from the pressure sensing device and the temperature sensing device, respectively; the second pressure information and the second temperature information are obtained by the second control module from the pressure sensing device and the temperature sensing device, respectively.

[0011] The first control module controls the opening of the regulating valve according to the first pressure information and / or the second pressure information to achieve the adjustment of the bleed air pressure in the gas flow pipeline; and / or controls the opening of the regulating valve according to the first temperature information and / or the second temperature information to achieve the adjustment of the bleed air temperature in the gas flow pipeline.

[0012] Furthermore, the regulating valve includes a pressure regulating valve, and the bleed air subsystem further includes a drive control device; the drive control device is connected to the first control module and the pressure regulating valve respectively;

[0013] The first control module determines the measured pressure value based on the first pressure information and / or the second pressure information, and generates a pressure adjustment control command based on the difference between the measured pressure value and the pressure target value.

[0014] The drive control device controls the angle of the pressure regulating valve according to the pressure regulating control command, so that the measured pressure value reaches the pressure target value.

[0015] Furthermore, the regulating valve includes a temperature regulating valve, and the bleed air subsystem further includes a heat exchanger connected to the temperature regulating valve;

[0016] The first control module determines the measured temperature value based on the first temperature information and / or the second temperature information, generates a temperature adjustment control command based on the difference between the measured temperature value and the target temperature value, and controls the angle of the temperature adjustment valve according to the temperature adjustment control command, so as to change the gas flow rate through the heat exchanger and the measured temperature value reaches the target temperature value.

[0017] Furthermore, the first control module includes an interface driver unit, a computing unit, a storage unit, a first power supply unit, a clock unit, and an anomaly monitoring unit;

[0018] The interface driver unit is used to acquire the pressure information and the temperature information.

[0019] The calculation unit is used to generate a valve rotation command based on at least one of the pressure information and the temperature information, and the interface driving unit outputs the valve rotation command to realize the rotation of the valve.

[0020] The storage unit is used to provide storage resources for the first control module;

[0021] The first power supply unit supplies power to the first control module;

[0022] The clock unit provides a clock reference for the computing unit;

[0023] The anomaly monitoring unit monitors the working status of the first control module in real time.

[0024] Furthermore, the second control module includes a processing unit and a second power supply unit;

[0025] The processing unit is configured to generate a bleed air shut-off command based on at least one of the pressure information and the temperature information;

[0026] The second power supply unit supplies power to the second control module.

[0027] Furthermore, the first control module monitors whether the bleed air pressure exceeds a first pressure threshold based on the first pressure information and / or the second pressure information, and controls the regulating valve to close when the pressure exceeds the first pressure threshold; and / or, monitors whether the bleed air temperature exceeds a first temperature threshold based on the first temperature information and / or the second temperature information, and controls the regulating valve to close when the temperature exceeds the first temperature threshold.

[0028] The first control module also monitors whether the bleed air pressure is lower than the second pressure threshold, and generates a low pressure alarm message when it is lower than the second pressure threshold; and / or monitors whether the bleed air temperature is lower than the second temperature threshold, and generates a low temperature alarm message when it is lower than the second temperature threshold.

[0029] Wherein, the first pressure threshold is greater than the second pressure threshold, and the first temperature threshold is greater than the second temperature threshold.

[0030] Furthermore, the second control module monitors whether the bleed air pressure exceeds a first pressure threshold based on the second pressure information and / or the first pressure information, and controls the regulating valve to close when the pressure exceeds the first pressure threshold; and / or, monitors whether the bleed air temperature exceeds a first temperature threshold based on the second temperature information and / or the first temperature information, and controls the regulating valve to close when the temperature exceeds the first temperature threshold.

[0031] The second control module also monitors whether the bleed air pressure is lower than a second pressure threshold, and generates a low-pressure alarm message when it is lower than the second pressure threshold; and / or monitors whether the bleed air temperature is lower than a second temperature threshold, and generates a low-temperature alarm message when it is lower than the second temperature threshold.

[0032] Furthermore, the system includes multiple air intake subsystems and multiple control devices. The control devices are connected to the air intake subsystems in a one-to-one correspondence. The multiple air intake subsystems are connected to each other through cross-flow air intake valves. The multiple control devices are connected to each other through communication.

[0033] Among the multiple control devices, the effective control device adjacent to the fault control device controls the opening of the cross-flow bleed valve between the bleed subsystem corresponding to the fault control device and the bleed subsystem corresponding to the effective control device, so as to connect the adjacent gas flow pipelines.

[0034] Furthermore, the air intake subsystem includes a first air intake subsystem and a second air intake subsystem, and the control device includes a first control device and a second control device;

[0035] In the event of a malfunction of the second control device, the first control device controls the opening of the cross-flow bleed valve, or the second control device controls the opening of the cross-flow bleed valve in the event of a malfunction of the first control device, so as to achieve communication between the gas flow pipeline in the first bleed subsystem and the gas flow pipeline in the second bleed subsystem.

[0036] Furthermore, the system also includes a cockpit controller, which is connected to the drive control device and the control equipment respectively;

[0037] The cockpit controller receives pressure and temperature monitoring information from the control equipment and generates a bleed air shut-off command in response to the operator's shutdown operation. The drive control device controls the pressure regulating valve to close according to the bleed air shut-off command.

[0038] Furthermore, the drive control device includes a fail-safe unit, which is used to generate a bleed air shut-off command to control the pressure regulating valve to close in the event of a failure of the drive control device or the control equipment.

[0039] Secondly, this application also provides an aircraft, which includes the air bleed control system as described above.

[0040] Thirdly, this application also provides a control method based on the above-mentioned bleed air control system of an aircraft, comprising:

[0041] The temperature information from the temperature sensing device and the pressure information from the pressure sensing device are acquired separately.

[0042] The valve is controlled to rotate based on at least one of the pressure information and the temperature information to regulate the bleed air temperature or bleed air pressure in the gas flow pipeline.

[0043] Furthermore, the pressure information includes first pressure information and second pressure information, and the temperature information includes first temperature information and second temperature information;

[0044] The first pressure information and the first temperature information are obtained by the first control module from the pressure sensing device and the temperature sensing device, respectively; the second pressure information and the second temperature information are obtained by the second control module from the pressure sensing device and the temperature sensing device, respectively.

[0045] The step of controlling the rotation of the regulating valve based on at least one of the pressure information and the temperature information includes:

[0046] The opening of the regulating valve is controlled according to the first pressure information and / or the second pressure information to achieve the adjustment of the bleed air pressure in the gas flow pipeline; and / or, the opening of the regulating valve is controlled according to the first temperature information and / or the second temperature information to achieve the adjustment of the bleed air temperature in the gas flow pipeline.

[0047] Further, the step of controlling the valve opening based on the first pressure information and / or the second pressure information includes:

[0048] The measured pressure value is determined based on the first pressure information and / or the second pressure information. A pressure regulation control command is generated using the difference between the measured pressure value and the pressure target value. The angle of the regulating valve is controlled by the pressure regulation control command so that the measured pressure value reaches the pressure target value.

[0049] The step of controlling the opening of the regulating valve according to the first temperature information and / or the second temperature information includes:

[0050] The measured temperature value is determined based on the first temperature information and / or the second temperature information. A temperature adjustment control command is generated using the difference between the measured temperature value and the target temperature value. The angle of the adjustment valve is controlled by the temperature adjustment control command so that the measured temperature value reaches the target temperature value.

[0051] Further, the step of determining the measured pressure value based on the first pressure information and / or the second pressure information includes:

[0052] The measured pressure value is determined based on the first pressure information and / or the second pressure information, and using preset information voting conditions.

[0053] The step of determining the measured temperature value based on the first temperature information and / or the second temperature information includes:

[0054] The measured temperature value is determined based on the first temperature information and / or the second temperature information, and using the preset information voting conditions.

[0055] The preset information voting conditions include one or more of the following: preset information priority, working status of the first control module and the second control module, and information acquisition time.

[0056] Furthermore, the method also includes:

[0057] If the measured pressure value exceeds the first pressure threshold or the measured temperature value exceeds the first temperature threshold, a bleed air shut-off command and corresponding overpressure alarm information or overtemperature alarm information are generated, and the bleed air shut-off command is used to control the regulating valve to close.

[0058] If the measured pressure value is lower than the second pressure threshold or the measured temperature value is lower than the second temperature threshold, a low pressure alarm message or a low temperature alarm message is generated accordingly; the first pressure threshold is greater than the second pressure threshold, and the first temperature threshold is greater than the second temperature threshold.

[0059] Furthermore, the method also includes:

[0060] The system acquires alarm information and generates a bleed air shut-off command in response to the bleed air shut-off operation, and uses the bleed air shut-off command to control the regulating valve to close; the bleed air shut-off operation is an operation performed by the operator based on the alarm information, which is one or more of overpressure alarm information and overtemperature alarm information.

[0061] Furthermore, the method also includes:

[0062] In the event of a failure of the drive control device or control equipment, a bleed air shut-off command is generated to control the closing of the regulating valve.

[0063] This application achieves the following beneficial effects: It proposes an air bleed control system for an aircraft, its control method, and the aircraft itself. The air bleed control system, through a first control module and a second control module, can independently acquire pressure and temperature information from pressure and temperature sensing devices, respectively. The first control module can then adjust the air bleed pressure and temperature based on the acquired pressure and temperature information. In other words, the first control module's control link for the rotation of the regulating valve can be implemented solely based on information acquired from the sensing devices, or it can be implemented using information forwarded from the second control module when it cannot acquire information or the acquired information is invalid, or it can combine both types of information. Therefore, even if one control module fails, the first control module can still control the regulating valve, ensuring system safety. Furthermore, since the first and second control modules are independent in information acquisition and functionally different (being two heterogeneous control modules), the probability of simultaneous failure of both control modules due to common-mode factors is greatly reduced, further improving the system's safety performance. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0065] Figure 1 This is one of the structural schematic diagrams of the air bleed control system provided in the embodiments of this application;

[0066] Figure 2 This is a second schematic diagram of the structure of the air bleed control system provided in the embodiments of this application;

[0067] Figure 3 A schematic diagram of the structure of the first air-entraining subsystem and the second air-entraining subsystem provided in the embodiments of this application;

[0068] Figure 4 One of the flowcharts of the control method provided in the embodiments of this application;

[0069] Figure 5 A second schematic flowchart illustrating the control method provided in an embodiment of this application;

[0070] Figure 6 A schematic diagram of the process for adjusting the air intake parameters provided in the embodiments of this application;

[0071] Figure 7A schematic diagram of the process for determining the bleed air pressure provided in an embodiment of this application;

[0072] Figure 8 This is a schematic diagram illustrating the process of generating the bleed air shut-off command provided in the embodiments of this application.

[0073] Explanation of reference numerals in the attached drawings: 10-Bleed air subsystem; 20-Control device; 101-Pressure sensing device; 102-Temperature sensing device; 103-Regulating valve; 201-First control module; 202-Second control module; 1031-Pressure regulating valve; 1032-Temperature regulating valve; 104-Drive control device; 105-Heat exchanger; 106-Compressed gas generating device; 30-Cockpit controller; 40-Avionics system; 50-Interconnected airborne system; 10'-First bleed air subsystem; 10"-Second bleed air subsystem; 20'-First control device; 20"-Second control device; 60-Transfer bleed air valve. Detailed Implementation

[0074] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0075] The following description, in conjunction with the accompanying drawings, explains the bleed air control system, its control method, and the aircraft provided in this application.

[0076] Figure 1 This is a schematic diagram of the bleed air control system provided in the embodiments of this application, as shown below. Figure 1 As shown, a bleed air control system includes a bleed air subsystem 10 and a control device 20, with the bleed air subsystem 10 connected to the control device 20.

[0077] The bleed gas subsystem 10 includes a pressure sensing device 101, a temperature sensing device 102, and a regulating valve 103 installed on the gas flow pipeline.

[0078] The pressure sensing device 101 is used to sense the bleed air pressure in the gas flow pipeline, and the temperature sensing device 102 is used to sense the bleed air temperature in the gas flow pipeline. The opening angle of the regulating valve 103 affects the bleed air pressure and temperature. By controlling the opening angle of the regulating valve 103, the bleed air pressure and temperature are adjusted to meet the bleed air pressure and temperature requirements of air conditioning systems, anti-icing systems, and other systems requiring a gas source.

[0079] It should be noted that the bleed gas subsystem 10 also includes a compressed gas generating device 106, which provides a gas source for the gas flow pipeline. Specifically, it can be a compressor, an engine, or other gas generating device capable of generating high-temperature and high-pressure gas.

[0080] Both the pressure sensing device 101 and the temperature sensing device 102 can sense information in real time and each has at least two interfaces. The first control module 201 and the second control module 202 are respectively connected to two different interfaces, and the sensing devices provide two different sensing links for the control device 20.

[0081] The control device 20 includes a first control module 201 and a second control module 202. The first control module 201 is connected to the pressure sensing device 101 and the temperature sensing device 102, respectively. The first control module 201 can directly obtain bleed air pressure information from the pressure sensing device 101 and directly obtain bleed air temperature information from the temperature sensing device 102. The first control module 201 and the second control module 202 are connected.

[0082] The second control module 202 is connected to the pressure sensing device 101 and the temperature sensing device 102 respectively. The second control module 202 can directly obtain the bleed air pressure information from the pressure sensing device 101 and the bleed air temperature information from the temperature sensing device 102.

[0083] The first control module 201 controls the regulating valve 103 to rotate based on at least one of the pressure information and the temperature information, so as to regulate the bleed air temperature or bleed air pressure in the gas flow pipeline.

[0084] To distinguish the information obtained by the first control module 201 and the second control module 202 from the pressure sensing device 101 and temperature sensing device respectively, the bleed air pressure information and bleed air temperature information obtained by the first control module 201 are considered as the first pressure information and the first temperature information, respectively, and the bleed air pressure information and bleed air temperature information obtained by the second control module 202 are considered as the second pressure information and the second temperature information. It should be noted that the first pressure information and the second pressure information are essentially the same, both being obtained in real time by the first control module 201 and the second control module 202 from the same pressure sensing device 101. Similarly, the first temperature information and the second temperature information are essentially the same, both being obtained in real time by the first control module 201 and the second control module 202 from the same temperature sensing device 102.

[0085] The first control module 201 controls the regulating valve 103 to rotate according to the first pressure information and / or the second pressure information, so as to realize the bleed pressure regulation in the gas flow pipeline; and / or controls the regulating valve 103 to rotate according to the first temperature information and / or the second temperature information, so as to realize the bleed temperature regulation in the gas flow pipeline.

[0086] Specifically, when the first control module 201 can only receive the first pressure information, it directly uses the first pressure information to control the opening angle of the regulating valve 103. At this time, it means that the second control module 202 is in a state where it cannot obtain the second pressure information, cannot forward the second pressure information, or the second pressure information is invalid.

[0087] When the first control module 201 can only receive the second pressure information, it directly uses the second pressure information to control the opening angle of the regulating valve 103. At this time, it means that the first control module 201 is in a state where it cannot directly obtain the first pressure information or the obtained first pressure information is invalid.

[0088] When the first control module 201 obtains the first pressure information and the second pressure information, it can determine the target pressure information from the first pressure information and the second pressure information through preset information voting conditions. Then, it uses the target pressure information to control the opening angle of the regulating valve 103, thereby changing the bleed air pressure to achieve the effect of bleed air pressure regulation.

[0089] It should be noted that after acquiring the second pressure information, the second control module 202 forwards it to the first control module 201 in real time. The first and second pressure information are essentially the same, both acquired from the same pressure sensing device 101, but their acquisition channels differ. The first pressure information is acquired directly from the pressure sensing device 101 by the first control module 201 through the connection between the first control module 201 and the pressure sensing device 101. The second pressure information is acquired directly from the pressure sensing device 101 by the second control module 202 through the connection between the second control module 202 and the pressure sensing device 101, and then forwarded to the first control module 201. The acquisition of the first and second pressure information is independent of each other.

[0090] Similarly, when the first control module 201 can only receive the first temperature information, it directly uses the first temperature information to control the rotation of the regulating valve 103. At this time, it means that the second control module 202 is in a state where it cannot obtain the second temperature information, cannot forward the second temperature information, or the second temperature information is invalid.

[0091] When the first control module 201 can only receive the second temperature information, it directly uses the second temperature information to control the rotation of the regulating valve 103. At this time, it means that the first control module 201 is in a state where it cannot directly obtain the first temperature information or the obtained first temperature information is invalid.

[0092] When the first control module 201 obtains the first temperature information and the second temperature information, it can determine the target temperature information from the first temperature information and the second temperature information through preset information voting conditions. Then, it uses the target temperature information to control the rotation of the regulating valve 103, specifically to control the opening angle of the regulating valve 103, so that the bleed air temperature changes accordingly, thereby achieving the effect of temperature regulation.

[0093] It should be noted that the first temperature information directly acquired by the first control module 201 and the second temperature information directly acquired by the second control module 202 are essentially the same, both being acquired from the same temperature sensing device 102. However, their acquisition channels differ. The first temperature information is acquired directly from the temperature sensing device 102 by the first control module 201 through the connection between the first control module 201 and the temperature sensing device 102. The second temperature information is acquired directly from the temperature sensing device 102 by the second control module 202 through the connection between the second control module 202 and the temperature sensing device 102, and then forwarded to the first control module 201. The acquisition of the first and second temperature information is independent of each other.

[0094] In addition, the first control module 201 can regulate the rotation of the regulating valve 103 upon receiving first pressure information and / or second pressure information, and it can also regulate the rotation of the regulating valve 103 upon receiving first temperature information and / or second temperature information. When both pressure information and temperature information are received simultaneously, the corresponding regulating valve 103 can be controlled.

[0095] The bleed air control system provided in this application embodiment allows the first control module 201 and the second control module 202 to independently acquire pressure and temperature information from the pressure sensing device 101 and the temperature sensing device 102, respectively. The first control module 201 can then adjust the bleed air pressure and temperature based on the acquired pressure and temperature information. In other words, the first control module 201's control link for the rotation of the regulating valve 103 can be implemented solely based on the information it acquires from the sensing devices, or it can be implemented through information forwarded from the second control module 202 if it cannot acquire information or the acquired information is invalid, or it can be implemented by combining both types of information. Therefore, even if one control module fails, the first control module 201 can still control the regulating valve 103, ensuring system safety. Furthermore, since the first control module 201 and the second control module 202 are independent in information acquisition and functionally different, belonging to two heterogeneous control modules, the probability of simultaneous failure of both control modules due to common-mode factors is greatly reduced, further improving the system's safety performance.

[0096] In some embodiments of this application, such as Figure 2 As shown, the regulating valve 103 includes a pressure regulating valve 1031, and the bleed air subsystem 10 also includes a drive control device 104; the drive control device 104 is connected to the first control module 201 and the pressure regulating valve 1031 respectively.

[0097] The first control module 201 determines the measured value of the bleed air pressure based on the first pressure information and / or the second pressure information, and generates a pressure adjustment control command based on the difference between the measured value of the bleed air pressure and the pressure target value.

[0098] In other words, when the first control module 201 receives only the first pressure information, it determines the pressure value in the first pressure information as the measured value of the bleed air pressure; when it receives only the second pressure information, it determines the pressure value in the second pressure information as the measured value of the bleed air pressure; and when it receives both the first and second pressure information, it determines the measured value of the bleed air pressure according to preset information voting conditions. These preset information voting conditions can include message priority (either the first pressure information takes precedence over the second pressure information, or the second pressure information takes precedence over the first pressure information), the acquisition speed of the first pressure information being faster than that of the second pressure information, the binding relationship between the first control module 201 and the first pressure information, information integration, and other information voting conditions.

[0099] Furthermore, the first control module 201 generates a corresponding pressure regulation control command based on the difference between the measured value of the bleed air pressure and the target pressure value. Specifically, the required opening angle of the pressure regulating valve 1031 can be calculated based on the difference using a feedback control algorithm, and the calculated adjustment angle is included in the pressure regulation control command. The feedback control algorithm can be, for example, a proportional-integral-derivative (PID) algorithm, a proportional-derivative (PD) algorithm, a neural network-based control model, etc., and this application does not limit its scope.

[0100] After the first control module 201 generates a pressure regulation control command, it transmits the command to the drive control device 104 via a connection. The drive control device 104 then controls the angle of the pressure regulating valve 1031 according to the command, so that the measured bleed air pressure continuously approaches the target pressure value. The target pressure value refers to the ideal pressure required by the gas system, which changes continuously according to gas demand.

[0101] The bleed air control system provided in this application embodiment realizes dynamic pressure adjustment through the first control module 201, and it uses the first pressure information and the second pressure information obtained from two independent sensing links, which can ensure the redundancy of pressure adjustment and improve the safety of the bleed air control system.

[0102] In some embodiments of this application, the regulating valve 103 includes a temperature regulating valve 1032, and the bleed air subsystem 10 also includes a heat exchanger 105, which is connected to the temperature regulating valve 1032.

[0103] The first control module 201 determines the measured temperature value based on the first temperature information and / or the second temperature information, generates a temperature adjustment control command based on the difference between the measured temperature value and the temperature target value, and controls the angle of the temperature adjustment valve 1032 according to the temperature adjustment control command, so that the gas flow rate through the heat exchanger 105 changes and the measured gas temperature reaches the temperature target value.

[0104] Schematic illustration: When the first control module 201 receives only the first temperature information, it uses the temperature value in the first temperature information as the measured temperature value; when it receives only the second temperature information, it uses the temperature value in the second temperature information as the measured temperature value; when it receives both the first and second temperature information, it determines the measured temperature value according to preset information voting conditions. These preset information voting conditions may include message priority (e.g., the first temperature information takes precedence over the second temperature information, or the second temperature information takes precedence over the first temperature information), the acquisition speed of the first temperature information being faster than that of the second temperature information, the binding relationship between the first control module 201 and the first temperature information, information integration, and other information voting conditions.

[0105] The first control module 201 generates a corresponding temperature regulation control command based on the difference between the measured temperature value and the target temperature value. Specifically, the required adjustment angle of the temperature regulating valve 1032 can be calculated based on the difference using a feedback control algorithm, and the calculated adjustment angle is included in the temperature regulation control command. The feedback control algorithm can be, for example, a proportional-integral-derivative (PID) algorithm, a proportional-derivative (PD) algorithm, a neural network-based control model, etc., and this application does not limit its application to this specific algorithm.

[0106] After generating a temperature regulation control command, the first control module 201 uses the temperature regulation control command to control the opening angle of the temperature regulation valve 1032, thereby regulating the gas flow rate through the cold side of the heat exchanger 105, so that the heat exchanger 105 transfers and carries away the heat of the high-temperature induced gas, thereby achieving the purpose of temperature regulation.

[0107] The bleed air control system provided in this application embodiment achieves dynamic temperature adjustment through the first control module 201, and it utilizes the first temperature information and the second temperature information obtained from two independent sensing links, which can ensure the redundancy of temperature adjustment and improve the safety of the bleed air control system.

[0108] In some embodiments of this application, the first control module includes a clock unit, an anomaly monitoring unit, a computing unit, a first power supply unit, a storage unit, an interface driver unit, a digital-to-analog conversion unit, a debugging unit, and a first protection unit.

[0109] The interface driving unit is used to acquire the pressure information and the temperature information. Specifically, the interface driving unit includes an interface circuit, which can acquire discrete and analog quantities output by pressure sensing devices, temperature sensing devices, etc. in the bleed air subsystem, and can output the discrete or analog quantities processed by the debugging unit to the corresponding location. It also has bus communication function and motor drive function, and is completely isolated from the second control module.

[0110] The calculation unit generates a valve rotation command based on at least one of the pressure and temperature information. The interface driving unit outputs the valve rotation command to achieve valve rotation. It should be noted that the calculation unit can also monitor the bleed air pressure and temperature based on the pressure and temperature information, and can also generate bleed air shut-off commands and alarm information. Furthermore, the calculation unit includes a computing chip and runs control software based on the computing chip. The computing chip can be a processor chip supporting high-reliability applications, and a processor circuit is built to provide computing resources for the calculation unit. The first control module can independently collect temperature and pressure information and perform real-time monitoring, without relying on the second control module. The calculation unit can independently perform calculations and decisions and control the interface driving unit to output signals to the valve, etc.

[0111] The storage unit provides storage resources for the first control module. Specifically, the storage unit includes a memory circuit, which can be NVRAM, SDRAM, etc., and is not limited thereto. The storage unit provides storage resources for the first control module to store control software code, etc., and can support the processor chip's operations and data access.

[0112] The first power supply unit supplies power to the first control module.

[0113] In this embodiment, the first power supply unit obtains independent power input from an external source (such as a busbar on an aircraft). Through primary power conversion, secondary power conversion, isolation, energy storage, filtering, and EMC processing, the input power is converted into voltages such as 15V, 12V, 5V, 3.3V, 1.8V, 1.2V, and negative voltage, thereby providing stable power to the various units on the first control module. Assuming that a failure in the first power supply unit causes the first control module to fail, the second power supply unit will not fail due to common-mode issues, and the second control module can continue to operate normally.

[0114] The clock unit provides a clock reference for the computing unit. Specifically, the clock unit includes a clock circuit, which uses a clock chip or similar device to provide a high-frequency clock reference for the computing unit and other devices that require a clock, in order to support the high-speed operation of the computing unit and the implementation of timer functions, and to support other devices in implementing their functions, without being associated with the second control module.

[0115] The anomaly monitoring unit monitors the working status of the first control module in real time. Specifically, the anomaly monitoring unit has watchdog function, temperature monitoring, power monitoring, etc. It can monitor the working status of the computing unit and other units in the first control module in real time, and immediately take corresponding anomaly handling when an anomaly is detected.

[0116] The first protection unit has circuits for overvoltage protection, overcurrent protection, power interruption protection, EMI protection, surge protection, reverse voltage protection, and interface protection. It can protect the first control module under various sudden conditions to ensure the stable and normal operation of the first control module and prevent it from being damaged.

[0117] The debugging unit includes a debugging interface circuit, which is used to debug the first control module during non-normal working modes such as R&D, factory inspection, fault diagnosis, and return for repair.

[0118] The digital-to-analog conversion unit includes an AD conversion circuit and a DA conversion circuit, which can convert the analog quantity input or output by the first control module to the digital quantity that the computing unit can process. For example, the analog signal of the temperature sensing device is converted into a digital quantity through the digital-to-analog conversion unit so that the computing unit can perform digital calculations.

[0119] In some embodiments of this application, the second control module further includes a second power supply unit, a processing unit, a conditioning unit, and a second protection unit.

[0120] The second power supply unit obtains an independent power input from an external source different from the first power supply unit, and converts it to the voltage type required by the devices on the second control module as needed, thus providing independent power to the second control module. In other words, if the second control module fails due to a power supply problem, the first control module will not fail due to the same power supply issue, improving the safety of the bleed air control system.

[0121] The processing unit is used to generate a bleed air shut-off command based on at least one of the pressure information and the temperature information. It should be noted that the processing unit can also generate alarm information based on the pressure information and temperature information; specific alarm information is described below.

[0122] Furthermore, the computing unit in the first control module runs the control software through a computing chip to output control commands. The processing unit in the second control module can run the control software through a chip, or it can implement the control logic through a programmable logic device or a pure hardware analog circuit. When both the computing unit and the processing unit use a chip to run the control software, the chip used by the computing unit and the chip used by the processing unit are different to ensure that neither the first nor the second control module fails due to the same chip problem.

[0123] The conditioning unit includes a conditioning circuit. The conditioning circuit converts the two signal types to each other based on the input / output signal type of the second control module and the signal type that the processing unit can recognize. The signal type that the processing unit can recognize needs to be determined based on whether the processing unit selects a digital computing chip, a programmable logic device, or a hardware analog circuit.

[0124] The second protection unit can provide protection against overvoltage, overcurrent, surge, and reverse voltage for the second control module circuit.

[0125] It should be noted that the first control module and the second control module adopt different design architectures, use different design methods, select different development and verification tools, different components, and different developers. This ensures that all units of the first control module and the second control module are heterogeneous and operate independently, with no common mode points, and that the two control modules will not fail simultaneously due to the same reason.

[0126] In some embodiments of this application, the first control module 201 monitors whether the bleed air pressure exceeds a first pressure threshold based on the first pressure information and / or the second pressure information, and controls the regulating valve 103 to close when the pressure exceeds the first pressure threshold. The first control module 201 can also monitor whether the bleed air temperature exceeds a first temperature threshold based on the first temperature information and / or the second temperature information, and controls the regulating valve 103 to close when the temperature exceeds the first temperature threshold.

[0127] In this embodiment, the first control module 201 also monitors in real time whether the bleed air pressure exceeds the pressure or temperature, and controls the regulating valve 103 to close when the pressure or temperature exceeds the pressure.

[0128] Specifically, the first control module 201 also uses the first pressure information and / or the second pressure information to monitor the bleed air pressure. Specifically, it uses the real-time acquired first pressure information and / or the second pressure information to continuously determine whether the current bleed air pressure exceeds the preset first pressure threshold. If it exceeds the threshold, the first control module 201 generates a bleed air shut-off command and transmits the bleed air shut-off command to the drive control device 104 through the connection with the drive control device 104. After receiving the bleed air shut-off command, the drive control device 104 controls the pressure regulating valve 1031 to close, thereby realizing the bleed air shut-off.

[0129] Correspondingly, the first control module 201 can also use the first temperature information and / or the second temperature information to monitor the bleed air temperature. Specifically, it uses the real-time acquired first temperature information and / or second temperature information to continuously determine whether the current bleed air temperature exceeds the preset first temperature threshold. If it exceeds the threshold, the first control module 201 generates a bleed air shut-off command and sends the bleed air shut-off command to the drive control device 104. After receiving the bleed air shut-off command, the drive control device 104 controls the pressure regulating valve 1031 to close, thereby achieving bleed air shut-off.

[0130] The first control module 201 also monitors whether the bleed air pressure is lower than a second pressure threshold, and generates a low-pressure alarm message when it is lower than the second pressure threshold; and / or monitors whether the bleed air temperature is lower than a second temperature threshold, and generates a low-temperature alarm message when it is lower than the second temperature threshold.

[0131] Specifically, the first control module 201 will also determine in real time whether the current bleed air pressure is lower than a preset second pressure threshold. If it is lower, a low-pressure alarm message will be generated to remind the operator in the cockpit to take relevant measures to address the low pressure in the bleed air subsystem 10. Similarly, the first control module 201 will also determine in real time whether the current bleed air temperature is lower than a preset second temperature threshold. If it is lower, a low-temperature alarm message will be generated to remind the operator to take relevant measures for low temperatures.

[0132] It should be noted that the first pressure threshold is greater than the second pressure threshold, and the first temperature threshold is greater than the second temperature threshold.

[0133] The bleed air control system provided in this application embodiment can also monitor the bleed air pressure and temperature in real time, and close the regulating valve 103 in case of over-temperature or over-pressure, and provide low-temperature or low-pressure early warning in case of low temperature or low pressure, thereby improving system safety. Furthermore, since the monitoring information of the first control module 201 can be obtained directly from the sensing device or forwarded via the second control module 202, the first control module 201 can still monitor over-temperature, over-pressure, low temperature, and low pressure even if the monitoring information of either the first or second control module 202 fails. Moreover, because the acquisition paths of the monitoring information are independent, there will be no failure due to common-mode factors, further improving system safety. In addition, the bleed air control system provided in this application achieves higher reliability and safety requirements for system control with minimal modifications, without increasing the number or weight of line replaceable units (LRUs).

[0134] In some embodiments of this application, the second control module 202 can also monitor low temperature, low pressure, over-temperature, and over-pressure. Specifically, the second control module 202 monitors whether the bleed air pressure exceeds a first pressure threshold based on the second pressure information and / or the first pressure information, and controls the regulating valve 103 to close when it exceeds the first pressure threshold; and / or, monitors whether the bleed air temperature exceeds a first temperature threshold based on the second temperature information and / or the first temperature information, and controls the regulating valve 103 to close when it exceeds the first temperature threshold.

[0135] The second control module 202 also monitors whether the bleed air pressure is lower than a second pressure threshold, and generates a low-pressure alarm message when it is lower than the second pressure threshold; and / or monitors whether the bleed air temperature is lower than a second temperature threshold, and generates a low-temperature alarm message when it is lower than the second temperature threshold.

[0136] It should be noted that the second control module 202 is also connected to the drive control device 104. When the second control module 202 detects that the bleed air pressure exceeds the first pressure threshold or the bleed air temperature exceeds the first temperature threshold, it will also generate a bleed air shut-off command and send the bleed air shut-off command to the drive control device 104. After receiving the bleed air shut-off command, the drive control device 104 controls the pressure regulating valve 1031 to close, so as to realize the bleed air shut-off.

[0137] In addition, since the low temperature and low pressure early warning process of the second control module 202 is similar to that of the first control module 201, it is also based on the comparison of the second pressure threshold and the second temperature threshold, and also generates low temperature early warning information and low pressure early warning information, which will not be described in detail here.

[0138] The bleed air control system provided in this application embodiment can also shut off bleed air in case of over-temperature or over-pressure, and provide early warnings in case of low temperature or low pressure. Therefore, even if the first control module 201 fails to operate, the second control module 202 can still achieve real-time monitoring of bleed air pressure and temperature, thereby improving system safety. Furthermore, since the monitoring information of the second control module 202 can be obtained directly from the sensing device or forwarded from the first control module 201, the second control module 202 can still monitor over-temperature, over-pressure, low temperature, and low pressure even if the monitoring information of either the first or second control module 201 fails. Moreover, because the acquisition paths of the monitoring information are independent, there will be no situation where both fail due to common-mode factors, further enhancing system safety.

[0139] In some embodiments of this application, the system includes multiple air intake subsystems 10 and multiple control devices 20, with each control device 20 connected to one of the air intake subsystems 10, and the multiple control devices 20 communicating with each other. The multiple air intake subsystems 10 are connected to each other via cross-flow air intake valves 60.

[0140] In other words, one control device 20 corresponds to one bleed air subsystem 10. Each control device 20 can control its corresponding bleed air subsystem 10, and the control devices 20 can communicate with each other. Two adjacent control devices 20 are also connected to the cross-flow bleed air valve 60 between the two corresponding bleed air subsystems 10.

[0141] Among the plurality of control devices 20, the effective control device 20 adjacent to the fault control device 20 controls the opening of the cross-flow bleed valve 60 between the bleed subsystem 10 corresponding to the fault control device 20 and the bleed subsystem 10 corresponding to the effective control device 20, so as to connect the adjacent gas flow pipelines.

[0142] In this embodiment, since the various control devices 20 are interconnected, when a faulty control device 20 occurs among the n control devices 20, the remaining na control devices 20 can determine the location and other fault information of the faulty control device 20. At this time, after receiving the fault information, the effective control device 20 adjacent to the faulty control device 20 controls the corresponding cross-flow bleed valve 60 to open. Here, the corresponding cross-flow bleed valve 60 refers to the cross-flow bleed valve 60 connecting the bleed subsystem 10 (hereinafter referred to as the faulty bleed subsystem 10) corresponding to the faulty control device 20 and the bleed subsystem 10 (hereinafter referred to as the effective bleed subsystem 10) corresponding to the effective control device 20, thereby connecting the two adjacent gas flow pipelines and allowing the faulty bleed subsystem 10 to share the gas source in the effective bleed subsystem 10, so that the faulty bleed subsystem 10 can still work normally.

[0143] It should be noted that each bleed air subsystem 10 may supply gas to different gas-consuming systems. In the event of a failure of one of the control devices 20, the bleed air valve 60 can be opened to ensure that the bleed air subsystem 10 corresponding to the failed control device 20 can still meet the needs of different gas-consuming systems.

[0144] Furthermore, the structures of each bleed air subsystem 10 and each control device 20 are identical. When two adjacent control devices 20 are operating normally, the corresponding cross-flow bleed air valve 60 is in the closed state, and each control device 20 can normally regulate the bleed air temperature, bleed air pressure, etc. within its corresponding bleed air subsystem 10.

[0145] In some embodiments of this application, such as Figure 3 As shown, the bleed air subsystem 10 includes a first bleed air subsystem 10' and a second bleed air subsystem 10"; the control device 20 includes a first control device 20' and a second control device 20"; wherein the first control device 20' is connected to the first bleed air subsystem 10' and is used to control the first bleed air subsystem 10'; the second control device 20" is connected to the second bleed air subsystem 10" and is used to control the second bleed air subsystem 10"; the first control device 20' and the second control device 20" are communicatively connected. The first bleed air subsystem 10' and the second bleed air subsystem 10" are connected through an exchange bleed air valve 60, and both the first control device 20' and the second control device 20" are connected to the exchange bleed air valve 60.

[0146] In the event of a malfunction of the second control device 20", the first control device 20' controls the opening of the cross-flow vent valve 60; in the event of a malfunction of the first control device 20', the second control device 20" controls the opening of the cross-flow vent valve 60, thereby connecting the two gas flow pipelines.

[0147] It should be noted that when both the first control device 20' and the second control device 20" are working normally, the cross-flow bleed air valve 60 between the first bleed air subsystem 10' and the second bleed air subsystem 10" is in the closed state.

[0148] The gas bleed control system provided in this application embodiment can still supply gas to each gas-using system normally in the event of a failure of the first control device 20' or the second control device 20" , thereby improving the stability of the system.

[0149] In some embodiments of this application, the bleed air control system further includes a cockpit controller 30, which is connected to the drive control device 104 and the control device 20 respectively. The cockpit controller 30 receives pressure monitoring information and temperature monitoring information from the control device 20 and generates a bleed air shutdown command in response to the operator's shutdown operation. The drive control device 104 controls the pressure regulating valve 1031 to close according to the bleed air shutdown command.

[0150] In other words, in addition to the automatic bleed air shut-off achieved by the first control module 201 and the second control module 202, the manual bleed air shut-off can also be achieved through the cockpit controller 30. Specifically, in order to prevent safety hazards caused by the failure of both the first control module 201 and the second control module 202, the bleed air control system also includes the cockpit controller 30, which is connected to the control device 20 and the drive control device 104 in the bleed air subsystem 10. The first control module 201 and the second control module 202 in the control device 20 will send their respective pressure monitoring information and temperature monitoring information to the cockpit controller 30 and issue alarm prompts on the cockpit controller 30 so that the operator operating the cockpit controller 30 can respond in a timely manner. After the operator operates the alarm prompts displayed by the cockpit controller 30 (specifically, alarm information such as over-temperature or over-pressure that urgently requires bleed air shutdown), the operator will take corresponding shutdown operations through the cockpit controller 30. The cockpit controller 30 will generate a bleed air shutdown command in response to the shutdown operation and send the bleed air shutdown command to the drive control device 104. After receiving the bleed air shutdown command, the drive control device 104 will control the pressure regulating valve 1031 to close.

[0151] The bleed air control system provided in this application embodiment achieves bleed air shut-off through the cockpit controller 30. Even if neither the first control module 201 nor the second control module 202 in the control device 20 can achieve bleed air shut-off control, the cockpit controller 30 can still achieve bleed air shut-off, thereby improving system safety. In addition, the control device 20 sends pressure monitoring information and temperature monitoring information to the cockpit controller 30 in real time, so that the operator can understand the bleed air pressure and bleed air temperature in real time.

[0152] In addition, with at least two bleed air subsystems 10, as shown in Table 1, the cockpit controller 30 can also control the opening of the cross-flow bleed air valve 60.

[0153] Specifically, the cockpit controller 30 is connected to each cross-flow bleed air valve 60 and also to each control device 20. When a control device 20 malfunctions, the cockpit controller 30 can acquire information about the malfunctioning control device 20 and generate a corresponding cross-flow bleed air valve 60 opening command based on this information. Based on this command, the controller 30 controls the corresponding cross-flow bleed air valve 60 to open. Here, the corresponding cross-flow bleed air valve 60 refers to the cross-flow bleed air valve 60 between the malfunctioning control device 20 and the adjacent effective control device 20 corresponding to the bleed air subsystem 10.

[0154] Schematic, when the bleed air control system has a first bleed air subsystem 10' and a second bleed air subsystem 10" , the cockpit controller 30 can generate an opening command for the cross-flow bleed air valve 60 in the event of a failure of the first control device 20' and / or the second control device 20" , thereby controlling the opening of the cross-flow bleed air valve 60 between the first bleed air subsystem 10' and the second bleed air subsystem 10" , thereby connecting the two gas flow pipelines and ensuring that each gas system can be used normally.

[0155] In addition, the cockpit controller 30, located within the cockpit, provides a human-machine interface for operators to control the bleed air control system. Besides controlling bleed air shut-off based on monitoring information and opening the cross-flow bleed air valve 60, it also features bleed air on / off status indication and bleed air fault indication functions. The cockpit controller 30 has all signal transmission channels; furthermore, to prevent anomalies in critical signals, some important signals are backed up through independent redundant transmission channels, thereby further enhancing system safety.

[0156] When the drive control device 104 simultaneously receives the bleed air shut-off command sent by the cockpit controller 30, the bleed air shut-off command sent by the first control module 201, and the bleed air shut-off command sent by the second control module 202, it can also determine a target command to execute from the three bleed air shut-off commands through the aforementioned information voting conditions. Specifically, it can be based on the time of receipt, the command priority of the cockpit controller 30, the first control module 201, and the second control module 202, etc., thereby realizing the control redundancy of the drive control device 104.

[0157] Table 1 Functional Diagram of Drive Control Device and Control Equipment

[0158]

[0159] As shown in Table 1, in addition to the control device 20 performing pressure over-limit handling, temperature over-limit handling, and cross-supply bleed air control, the cockpit controller 30 can also perform the aforementioned three functions. Furthermore, the first control module 201 can also perform pressure regulation, temperature regulation, and cross-supply bleed air control. Both the first control module 201 and the second control module 202 can perform pressure monitoring, temperature monitoring, overpressure shutdown, low pressure notification, over-temperature shutdown, and low temperature notification. Based on this, the bleed air control system provided in this application has control redundancy, improving system safety.

[0160] In some embodiments of this application, the drive control device includes a fail-safe unit, which is used to generate a bleed air shut-off command to control the pressure regulating valve to close in the event of a failure of the drive control device or the control equipment.

[0161] In other words, when the drive control device cannot effectively control the opening and closing or the opening adjustment of the pressure regulating valve, or when neither the first control module nor the second control module in the control device can generate an effective control command, in order to prevent the failure to cut off the bleed air under abnormal circumstances, the failure protection unit generates a bleed air shut-off command to control the pressure regulating valve to close, prevent the pressure regulating valve from going out of control, avoid serious consequences such as bleed air overheating, overpressure, and leakage, and improve the safety of the bleed air control system.

[0162] In some embodiments of this application, the system includes a compressed gas generating device 106 having a gas supply port that supplies gas downstream through a gas flow pipeline.

[0163] A pressure regulating valve 1031 is located on the gas flow pipeline. The pressure regulating valve 1031 has a control terminal, which is connected to a drive control device 104. The drive control device 104 is connected to a first control module 201. A heat exchanger 105 is installed on the gas flow pipeline.

[0164] The pressure sensing device 101 is installed on the gas flow pipeline between the heat exchanger 105 and the pressure regulating valve 1031. It is used to sense the bleed pressure in the gas flow pipeline in real time and transmit the sensed pressure information to the first control module 201 and the second control module 202 respectively.

[0165] Temperature sensing device 102 is installed on the gas flow pipeline to sense the temperature of the induced gas in the gas flow pipeline in real time, and transmits the sensed temperature information to the first control module 201 and the second control module 202 respectively.

[0166] In other embodiments of this application, the bleed air control system further includes an avionics system 40 and a cross-linking airborne system 50. The avionics system 40 provides an information pathway for the control equipment. Through the avionics system 40, the control equipment can obtain information sent to it by external systems and can also send monitoring information acquired by the control equipment to external systems. The cross-linking airborne system 50 refers to an external airborne system that has an energy and information connection with the bleed air subsystem. It includes a power supply system that independently supplies power to different control devices and different control modules to prevent the failure of one power supply from causing the failure of multiple control devices or both control modules.

[0167] In addition, to prevent the loss of critical information, the airborne interconnection system 50 has two signal transmission channels, one of which backs up critical signals from the other. Critical signals refer to signals that cannot meet safety requirements when transmitted solely via the avionics bus, such as wheel-borne signals. Backing up these signals through an independent redundant transmission channel prevents their loss and enhances the safety of the bleed air control system.

[0168] like Figure 4 As shown, this application also provides a control method for an aircraft's bleed air control system, the method comprising the following steps:

[0169] S401, acquire the temperature information of the temperature sensing device 102 and the pressure information of the pressure sensing device 101 respectively.

[0170] In this step, temperature and pressure information can be obtained through two independent sensing links. One is that the first control module 201 obtains the information directly from the temperature sensing device 102 and the pressure sensing device 101. The other is that the second control module 202 first obtains the information directly from the temperature sensing device 102 and the pressure sensing device 101, and then forwards the information obtained by the second control module 202 to the first control module 201. At this time, the first control module 201 has information obtained from the two independent sensing links.

[0171] S402, control the rotation of the regulating valve 103 according to at least one of the pressure information and the temperature information to achieve the regulation of the bleed air temperature or bleed air pressure in the gas flow pipeline.

[0172] In this step, the first control module 201 uses the pressure information obtained from two independent sensing links to adjust the regulating valve 103 to adjust the bleed air pressure; or it uses the temperature information to control the regulating valve 103 to adjust the bleed air temperature, thereby meeting the downstream gas system's requirements for bleed air pressure and bleed air temperature.

[0173] The control method of the bleed air control system provided in this application uses pressure and temperature information obtained from two independent sensing links to control the regulating valve 103, thereby improving the safety of the system.

[0174] In some embodiments of this application, the pressure information includes first pressure information and second pressure information, and the temperature information includes first temperature information and second temperature information.

[0175] The first pressure information and the first temperature information are obtained by the first control module 201 from the pressure sensing device 101 and the temperature sensing device 102, respectively. The second pressure information and the second temperature information are obtained by the second control module 202 from the pressure sensing device 101 and the temperature sensing device 102, respectively.

[0176] The step of controlling the rotation of the regulating valve 103 based on at least one of the pressure information and the temperature information includes:

[0177] The opening of the regulating valve 103 is controlled according to the first pressure information and / or the second pressure information to achieve the adjustment of the bleed air pressure in the gas flow pipeline; and / or, the opening of the regulating valve 103 is controlled according to the first temperature information and / or the second temperature information to achieve the adjustment of the bleed air temperature in the gas flow pipeline.

[0178] Specifically, when the first control module 201 can only receive the first pressure information, it can directly use the first pressure information to control the opening angle of the regulating valve 103.

[0179] When the first control module 201 can only receive the second pressure information, it can directly use the second pressure information to control the opening angle of the regulating valve 103.

[0180] When the first control module 201 obtains the first pressure information and the second pressure information, it can determine the target pressure information from the first pressure information and the second pressure information through preset information voting conditions. Then, it uses the target pressure information to control the opening angle of the regulating valve 103, thereby changing the bleed air pressure to achieve the effect of bleed air pressure regulation.

[0181] Similarly, when the first control module 201 can only receive the first temperature information, it can directly use the first temperature information to control the rotation of the regulating valve 103.

[0182] When the first control module 201 can only receive the second temperature information, it can directly use the second temperature information to control the rotation of the regulating valve 103.

[0183] When the first control module 201 obtains the first temperature information and the second temperature information, it can determine the target temperature information from the first temperature information and the second temperature information through preset information voting conditions. Then, it uses the target temperature information to control the rotation of the regulating valve 103, specifically to control the opening angle of the regulating valve 103, so that the bleed air temperature changes accordingly, thereby achieving the effect of temperature regulation.

[0184] In addition, the first control module 201 can regulate the rotation of the regulating valve 103 upon receiving first pressure information and / or second pressure information, and it can also regulate the rotation of the regulating valve 103 upon receiving first temperature information and / or second temperature information. When both pressure information and temperature information are received simultaneously, the corresponding regulating valve 103 can be controlled.

[0185] The control method of the bleed air control system provided in this application embodiment can adjust the bleed air pressure based on first pressure information and / or second pressure information, and adjust the bleed air temperature based on first temperature information and / or second temperature information, both having two different control links. Even if one control link fails, the other control link is still available, thereby improving the safety performance of the system.

[0186] In some embodiments of this application, the step of controlling the opening of the regulating valve 103 according to the first pressure information and / or the second pressure information includes:

[0187] The measured pressure value is determined based on the first pressure information and / or the second pressure information. A pressure regulation control command is generated using the difference between the measured pressure value and the pressure target value. The angle of the regulating valve 103 is controlled by the pressure regulation control command so that the measured pressure value reaches the pressure target value.

[0188] The step of controlling the opening of the regulating valve 103 according to the first temperature information and / or the second temperature information includes:

[0189] The measured temperature value is determined based on the first temperature information and / or the second temperature information. A temperature adjustment control command is generated using the difference between the measured temperature value and the target temperature value. The angle of the adjustment valve 103 is controlled by the temperature adjustment control command so that the measured temperature value reaches the target temperature value.

[0190] Specifically, when the first control module 201 receives only the first pressure information, it determines the pressure value in the first pressure information as the measured value of the bleed air pressure; when it receives only the second pressure information, it determines the pressure value in the second pressure information as the measured value of the bleed air pressure; and when it receives both the first and second pressure information, it determines the measured value of the bleed air pressure according to preset information voting conditions. These preset information voting conditions may include message priority (e.g., the first pressure information takes precedence over the second pressure information, or the second pressure information takes precedence over the first pressure information), the acquisition speed of the first pressure information being faster than that of the second pressure information, the binding relationship between the first control module 201 and the first pressure information, information integration, and other information voting conditions.

[0191] Furthermore, the first control module 201 generates a corresponding pressure regulation control command based on the difference between the measured value of the bleed air pressure and the target pressure value. Specifically, the required opening angle of the pressure regulating valve 1031 can be calculated based on the difference using a feedback control algorithm, and the calculated adjustment angle is included in the pressure regulation control command. The feedback control algorithm can be, for example, a proportional-integral-derivative (PID) algorithm, a proportional-derivative (PD) algorithm, a neural network-based control model, etc., and this application does not limit its scope.

[0192] After the first control module 201 generates a pressure regulation control command, it transmits the command to the drive control device 104 via a connection. The drive control device 104 then controls the angle of the pressure regulating valve 1031 according to the command, so that the measured bleed air pressure continuously approaches the target pressure value. The target pressure value refers to the ideal pressure required by the gas system, which changes continuously according to gas demand.

[0193] Accordingly, when the first control module 201 receives only the first temperature information, it uses the temperature value in the first temperature information as the measured temperature value; when it receives only the second temperature information, it uses the temperature value in the second temperature information as the measured temperature value; and when it receives both the first and second temperature information, it determines the measured temperature value according to preset information voting conditions. These preset information voting conditions can include message priority (e.g., the first temperature information takes precedence over the second temperature information, or the second temperature information takes precedence over the first temperature information), the acquisition speed of the first temperature information being faster than that of the second temperature information, the binding relationship between the first control module 201 and the first temperature information, information integration, and other information voting conditions.

[0194] The first control module 201 generates a corresponding temperature regulation control command based on the difference between the measured temperature value and the target temperature value. Specifically, the required adjustment angle of the temperature regulating valve 1032 can be calculated based on the difference using a feedback control algorithm, and the calculated adjustment angle is included in the temperature regulation control command. The feedback control algorithm can be, for example, a proportional-integral-derivative (PID) algorithm, a proportional-derivative (PD) algorithm, a neural network-based control model, etc., and this application does not limit its application to this specific algorithm.

[0195] After generating a temperature regulation control command, the first control module 201 uses the temperature regulation control command to control the opening angle of the temperature regulation valve 1032, thereby regulating the gas flow rate through the cold side of the heat exchanger 105, so that the heat exchanger 105 transfers and carries away the heat of the high-temperature induced gas, thereby achieving the purpose of temperature regulation.

[0196] The control method of the expiratory air control system provided in this application uses the first temperature information and the second temperature information, the first pressure information and the second pressure information obtained from two independent sensing links to perform temperature regulation and pressure regulation. This can ensure the redundancy of temperature regulation and pressure regulation and improve the safety of the expiratory air control system.

[0197] In some embodiments of this application, the method further includes:

[0198] If the measured pressure value exceeds the first pressure threshold or the measured temperature value exceeds the first temperature threshold, a bleed air shut-off command and corresponding overpressure alarm information or overtemperature alarm information are generated, and the regulating valve 103 is controlled to close using the bleed air shut-off command.

[0199] If the measured pressure value is lower than the second pressure threshold or the measured temperature value is lower than the second temperature threshold, a low pressure alarm message or a low temperature alarm message is generated accordingly; the first pressure threshold is greater than the second pressure threshold, and the first temperature threshold is greater than the second temperature threshold.

[0200] In this embodiment, in order to achieve real-time monitoring of bleed air pressure and bleed air temperature, a first pressure threshold, a second pressure threshold, a first temperature threshold, and a second temperature threshold are set to compare and judge the bleed air pressure and bleed air temperature in real time, and corresponding alarm information and control commands are generated based on the comparison results.

[0201] Specifically, when the measured pressure value exceeds the first pressure threshold, a bleed air shut-off command and a corresponding overpressure alarm are generated; when the measured pressure value is lower than the second pressure threshold, a low pressure alarm is generated; when the measured temperature value exceeds the first temperature threshold, a bleed air shut-off command and an overtemperature alarm are generated; and when the measured temperature value is lower than the second temperature threshold, a low temperature alarm is generated.

[0202] It should be noted that the first pressure threshold is the overpressure threshold, the second pressure threshold is the low pressure threshold, the first temperature threshold is the overtemperature threshold, the second temperature threshold is the low temperature threshold, the first pressure threshold is greater than the second pressure threshold, and the first temperature threshold is greater than the second temperature threshold.

[0203] In some embodiments of this application, the method further includes:

[0204] The system acquires alarm information and generates a bleed air shut-off command in response to the bleed air shut-off operation. The bleed air shut-off command is used to control the regulating valve 103 to close. The bleed air shut-off operation is an operation performed by the operator based on the alarm information, which is one or more of the following: overpressure alarm information, overtemperature alarm information, low pressure alarm information, or low temperature alarm information.

[0205] In this embodiment, the cockpit controller 30 obtains alarm information from the control device 20 and sends an alarm to the operator. The operator will take corresponding bleed air shut-off operation according to the alarm information. Then, the cockpit controller 30 responds to the bleed air shut-off operation, generates a bleed air shut-off command, and transmits it to the drive control device 104. The drive control device 104 executes the bleed air shut-off command to close the pressure regulating valve 1031.

[0206] In some embodiments of this application, in the event of a failure of the drive control device or control equipment, a bleed air shut-off command is generated to control the closing of the regulating valve.

[0207] The control method provided in this application embodiment can passively shut off the bleed gas when the drive control device or control equipment is abnormal and cannot cut off the bleed gas. This avoids serious consequences such as overheating, overpressure, and leakage caused by the uncontrolled regulating valve under abnormal conditions. It can reliably protect the downstream gas system, prevent it from being damaged, and improve the safety of bleed gas.

[0208] In some embodiments of this application, such as Figure 5 As shown, the control method of the bleed air control system includes the following steps:

[0209] S501, Initialize the bleed air control system. Determine whether to enter the cycle loop main application program based on the boundary input conditions. If the cycle loop conditions are not met, enter the service subroutine. After the service subroutine is executed, enter the termination state. If the conditions are met, enter the cycle loop main application program step S502.

[0210] Specifically, determining whether to enter the cyclic main application based on boundary input conditions refers to determining whether the control device needs to enter non-cyclic main application modes such as software loading mode, IBIT maintenance self-test mode, ATP function test mode, and development / debugging mode. Service subroutines refer to service subroutines for software loading mode, IBIT maintenance self-test mode, ATP function test mode, and development / debugging mode.

[0211] The bleed gas control system selects a gas source from the engine, compressor, APU, or ground high-pressure connector for the compressed gas generating device 106. Only one gas source is selected at a time. The bleed gas control system of this application performs necessary temperature and pressure regulation on the high-temperature and high-pressure gas input from the upstream source to meet the needs of the downstream gas system.

[0212] S502, determine whether the monitoring and control device 20 is working properly. If it is not working properly, perform system reconfiguration and enter the end state after execution; if it is working properly, proceed to step S503.

[0213] S503: Obtain control information for the cockpit bleed air system and acquire bleed air temperature, bleed air pressure, and valve status via control device 20. Simultaneously, acquire information input from the crosslinking airborne system 50.

[0214] S504 integrates the information from the cockpit bleed air system control system, the information acquired by the control equipment 20, and the information acquired by the airborne interconnection system 50. It then performs a voting process on the same information from multiple redundant inputs to obtain a unique target information. Based on the target information, it uses a control logic algorithm for computation and processing, generates corresponding control commands based on the processing results, and outputs them.

[0215] In some embodiments of this application, such as Figure 6 As shown, bleed air pressure monitoring includes the following steps:

[0216] S601 monitors the bleed air pressure in real time to ensure it does not exceed limits. Multiple pressure monitoring thresholds are preset, each with a different over-limit confirmation time. For example, when the bleed air pressure P exceeds PI, the over-limit confirmation time is t1; when P exceeds PII, the over-limit confirmation time is t2. PI is less than PII, and t1 is greater than t2. This means that the higher the bleed air pressure, the shorter the corresponding over-limit confirmation time and the faster the response. This allows the bleed air control system provided in this application to have timely response measures when facing different pressure monitoring thresholds, improving system safety. The bleed air parameters include bleed air pressure and bleed air temperature.

[0217] S602, calculate the target value of bleed air pressure based on the current operating conditions.

[0218] S603 calculates the opening angle of the pressure regulating valve 1031 based on the difference between the measured value and the target value using a feedback algorithm, and generates relevant control commands.

[0219] S604 executes the control command to drive the corresponding regulating valve 103 to actuate, so that the measured value approaches the target value.

[0220] In addition, once the bleed air pressure is confirmed to exceed the maximum pressure threshold, a bleed air shut-off control command and an alarm message will be generated. The bleed air shut-off control command is executed by the drive control device 104 to close the pressure regulating valve 1031 and cut off the bleed air. At the same time, the alarm message is sent to the cockpit controller 30. After the alarm message is received by the operator, the cockpit controller 30 can be manually operated to issue a bleed air shut-off control command. The bleed air shut-off control command is transmitted to the drive control device 104, which is electrically connected to it, and then the drive control device 104 executes the shutdown of the bleed air.

[0221] If the bleed air pressure is confirmed to be below the minimum pressure monitoring threshold, the first control module 201 issues an alarm message and notifies the outside world of the low bleed air pressure. In addition, the first control module 201 also has a self-testing function, which can monitor the operating status and health status of components and systems in real time, and issue instructions to record the necessary information.

[0222] In some embodiments of this application, such as Figure 7 As shown, the process of determining overpressure and underpressure in the bleed air pressure in the first control module 201 includes the following steps:

[0223] S701 obtains the bleed air pressure through the first control module 201.

[0224] S702, determine whether the bleed air pressure collected in S701 is valid. If invalid, proceed to step S703; if valid, proceed to step S704.

[0225] S703: Obtain the backup measured pressure from the second control module 202, determine whether the valid backup measured pressure has been successfully obtained, if not, report the fault information and reconstruct the system and then execute S705, if successful, execute S704.

[0226] S704: Confirm whether the bleed air pressure obtained from the first control module 201 or the backup measured pressure obtained from the second control module 202 is overpressure. If overpressure is confirmed, output a bleed air cut-off control command and then issue an alarm message to notify the outside world of bleed air overpressure. If not overpressure, confirm whether the bleed air pressure is low. If low pressure is confirmed, issue an alarm message to notify the outside world of bleed air low pressure and then execute S705; if not low pressure, execute the real-time dynamic closed-loop control program and then execute S705.

[0227] In this step, there are multiple different threshold judgments for overpressure confirmation and underpressure confirmation. Each threshold represents a different degree of overpressure or underpressure. Correspondingly, the greater the degree of overpressure or underpressure, the shorter the confirmation time, and vice versa.

[0228] S705 outputs real-time monitoring information such as the operating status and health status of components and the system for indication and recording. It also sends notification information to the human-machine interface terminal via control device 20, enabling operators to dynamically monitor the system's operating status and assisting them in deciding whether to perform operations such as manually shutting off the bleed air supply.

[0229] This application also provides an aircraft including the aforementioned bleed air control system. Indicatively, the aircraft may be an airplane, a flying car, a spacecraft, etc.

[0230] In some embodiments of this application, such as Figure 8 As shown, the bleed air shut-off command can be generated in several ways:

[0231] S801 automatically generates a bleed air shut-off command through the real-time monitoring of the first and second control modules in the control device. Specifically, it judges in real time whether there is an over-temperature or over-pressure situation based on temperature information, pressure information and corresponding thresholds. If an over-temperature or over-pressure situation occurs, the first or second control module generates a bleed air shut-off command and sends it to the drive control module so that the drive control module shuts off the pressure regulating valve according to the bleed air shut-off command.

[0232] S802, through the bleed air shutdown operation received from the cockpit controller, manually generates a bleed air shutdown command. Specifically, the control equipment transmits monitoring information or early warning information under over-temperature and over-pressure conditions to the cockpit controller. The operator using the cockpit controller performs manual bleed air shutdown control based on the acquired information, thereby generating a bleed air shutdown command from the cockpit controller and sending it to the drive control module to realize the bleed air shutdown.

[0233] S803 passively generates a bleed air shut-off command through a fail-safe unit within the drive control device. Specifically, when the fail-safe unit detects a failure in the drive control device or control equipment, it generates a bleed air shut-off command to close the pressure regulating valve, thereby preventing the pressure regulating valve from malfunctioning and improving the safety of the bleed air control system.

[0234] It should be noted that there is no specific execution order among S801, S802, and S803.

[0235] The control method provided in this application improves the safety of the bleed air control system by automatically, manually, and passively generating bleed air shut-off commands to avoid serious problems such as overheating, overpressure, and leakage under abnormal conditions.

[0236] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A bleed air control system for an aircraft, characterized in that, This includes the bleed air subsystem, cockpit controller, and control equipment; The gas venting subsystem includes a pressure sensing device, a temperature sensing device, and a regulating valve installed on the gas flow pipeline; The pressure sensing device is used to sense the bleed pressure in the gas flow pipeline; The temperature sensing device is used to sense the bleed air temperature in the gas flow pipeline; The control device includes a first control module and a second control module, used to acquire temperature information from the temperature sensing device and pressure information from the pressure sensing device, respectively. The first control module controls the rotation of the regulating valve based on at least one of the pressure information and the temperature information, so as to regulate the bleed air temperature or bleed air pressure in the gas flow pipeline; The bleed air shut-off commands sent by the cockpit controller, the first control module, and the second control module have different priorities. The cockpit controller functions to shut off bleed air from overpressure, from overtemperature, and to control cross-feed bleed air supply. The first control module functions to regulate pressure, monitor pressure, shut off overpressure, report low pressure, regulate temperature, monitor temperature, shut off overtemperature, report low temperature, and control cross-feed bleed air supply. The second control module functions to monitor pressure, shut off overpressure, report low pressure, monitor temperature, shut off overtemperature, and report low temperature.

2. The system according to claim 1, characterized in that, The pressure information includes first pressure information and second pressure information, and the temperature information includes first temperature information and second temperature information; The first pressure information and the first temperature information are obtained by the first control module from the pressure sensing device and the temperature sensing device, respectively; the second pressure information and the second temperature information are obtained by the second control module from the pressure sensing device and the temperature sensing device, respectively. The first control module controls the opening of the regulating valve according to the first pressure information and / or the second pressure information to achieve the regulation of the bleed pressure in the gas flow pipeline; And / or, control the opening of the regulating valve according to the first temperature information and / or the second temperature information to achieve the regulation of the bleed air temperature in the gas flow pipeline.

3. The system according to claim 2, characterized in that, The regulating valve includes a pressure regulating valve, and the bleed air subsystem further includes a drive control device; the drive control device is connected to the first control module and the pressure regulating valve respectively. The first control module determines the measured pressure value based on the first pressure information and / or the second pressure information, and generates a pressure adjustment control command based on the difference between the measured pressure value and the pressure target value. The drive control device controls the angle of the pressure regulating valve according to the pressure regulating control command, so that the measured pressure value reaches the pressure target value.

4. The system according to claim 2, characterized in that, The regulating valve includes a temperature regulating valve, and the bleed air subsystem further includes a heat exchanger, which is connected to the temperature regulating valve. The first control module determines the measured temperature value based on the first temperature information and / or the second temperature information, generates a temperature adjustment control command based on the difference between the measured temperature value and the target temperature value, and controls the angle of the temperature adjustment valve according to the temperature adjustment control command, so as to change the gas flow rate through the heat exchanger and the measured temperature value reaches the target temperature value.

5. The system according to claim 1, characterized in that, The first control module includes an interface driver unit, a computing unit, a storage unit, a first power supply unit, a clock unit, and an anomaly monitoring unit; The interface driver unit is used to acquire the pressure information and the temperature information. The calculation unit is used to generate a valve rotation command based on at least one of the pressure information and the temperature information, and the interface driving unit outputs the valve rotation command to realize the rotation of the valve. The storage unit is used to provide storage resources for the first control module; The first power supply unit supplies power to the first control module; The clock unit provides a clock reference for the computing unit; The anomaly monitoring unit monitors the working status of the first control module in real time.

6. The system according to claim 5, characterized in that, The second control module includes a processing unit and a second power supply unit; The processing unit is configured to generate a bleed air shut-off command based on at least one of the pressure information and the temperature information; The second power supply unit supplies power to the second control module.

7. The system according to claim 2, characterized in that, The first control module monitors whether the bleed air pressure exceeds a first pressure threshold based on the first pressure information and / or the second pressure information, and controls the regulating valve to close when the pressure exceeds the first pressure threshold. And / or, monitor whether the bleed air temperature exceeds a first temperature threshold based on the first temperature information and / or the second temperature information, and control the regulating valve to close when it exceeds the first temperature threshold; The first control module also monitors whether the bleed air pressure is lower than the second pressure threshold, and generates a low pressure alarm message when it is lower than the second pressure threshold; and / or monitors whether the bleed air temperature is lower than the second temperature threshold, and generates a low temperature alarm message when it is lower than the second temperature threshold. Wherein, the first pressure threshold is greater than the second pressure threshold, and the first temperature threshold is greater than the second temperature threshold.

8. The system according to claim 7, characterized in that, The second control module monitors whether the bleed air pressure exceeds the first pressure threshold based on the second pressure information and / or the first pressure information, and controls the regulating valve to close when the pressure exceeds the first pressure threshold. And / or, monitor whether the bleed air temperature exceeds a first temperature threshold based on the second temperature information and / or the first temperature information, and control the regulating valve to close when it exceeds the first temperature threshold; The second control module also monitors whether the bleed air pressure is lower than a second pressure threshold, and generates a low-pressure alarm message when it is lower than the second pressure threshold; and / or monitors whether the bleed air temperature is lower than a second temperature threshold, and generates a low-temperature alarm message when it is lower than the second temperature threshold.

9. The system according to claim 3, characterized in that, The system includes multiple air intake subsystems and multiple control devices. The control devices are connected to the air intake subsystems in a one-to-one correspondence. The multiple air intake subsystems are connected to each other through cross-flow air intake valves. The multiple control devices are connected to each other through communication. Among the multiple control devices, the effective control device adjacent to the fault control device controls the opening of the cross-flow bleed valve between the bleed subsystem corresponding to the fault control device and the bleed subsystem corresponding to the effective control device, so as to connect the adjacent gas flow pipelines.

10. The system according to claim 9, characterized in that, The air intake subsystem includes a first air intake subsystem and a second air intake subsystem, and the control device includes a first control device and a second control device; In the event of a malfunction of the second control device, the first control device controls the opening of the cross-flow bleed valve, or the second control device controls the opening of the cross-flow bleed valve in the event of a malfunction of the first control device, so as to achieve communication between the gas flow pipeline in the first bleed subsystem and the gas flow pipeline in the second bleed subsystem.

11. The system according to claim 3, characterized in that, The cockpit controller is connected to the drive control device and the control equipment, respectively. The cockpit controller receives pressure and temperature monitoring information from the control equipment and generates a bleed air shut-off command in response to the operator's shutdown operation. The drive control device controls the pressure regulating valve to close according to the bleed air shut-off command.

12. The system according to claim 3, characterized in that, The drive control device includes a fail-safe unit, which generates a bleed air shut-off command to control the pressure regulating valve to close in the event of a failure of the drive control device or the control equipment.

13. An aircraft, characterized in that, The aircraft includes the bleed air control system of the aircraft as described in any one of claims 1 to 12.

14. A control method for an aircraft based on the bleed air control system of any one of claims 1 to 12, characterized in that, include: The temperature information from the temperature sensing device and the pressure information from the pressure sensing device are acquired separately. The valve is controlled to rotate based on at least one of the pressure information and the temperature information to regulate the bleed air temperature or bleed air pressure in the gas flow pipeline.

15. The method according to claim 14, characterized in that, The pressure information includes first pressure information and second pressure information, and the temperature information includes first temperature information and second temperature information; The first pressure information and the first temperature information are obtained by the first control module from the pressure sensing device and the temperature sensing device, respectively; the second pressure information and the second temperature information are obtained by the second control module from the pressure sensing device and the temperature sensing device, respectively. The step of controlling the rotation of the regulating valve based on at least one of the pressure information and the temperature information includes: The opening of the regulating valve is controlled according to the first pressure information and / or the second pressure information to achieve the regulation of the bleed pressure in the gas flow pipeline; And / or, control the opening of the regulating valve according to the first temperature information and / or the second temperature information to achieve the regulation of the bleed air temperature in the gas flow pipeline.

16. The method according to claim 15, characterized in that, The steps of controlling the valve opening based on the first pressure information and / or the second pressure information include: The measured pressure value is determined based on the first pressure information and / or the second pressure information. A pressure regulation control command is generated using the difference between the measured pressure value and the pressure target value. The angle of the regulating valve is controlled by the pressure regulation control command so that the measured pressure value reaches the pressure target value. The step of controlling the opening of the regulating valve according to the first temperature information and / or the second temperature information includes: The measured temperature value is determined based on the first temperature information and / or the second temperature information. A temperature adjustment control command is generated using the difference between the measured temperature value and the target temperature value. The angle of the adjustment valve is controlled by the temperature adjustment control command so that the measured temperature value reaches the target temperature value.

17. The method according to claim 16, characterized in that, The step of determining the measured pressure value based on the first pressure information and / or the second pressure information includes: The measured pressure value is determined based on the first pressure information and / or the second pressure information, and using preset information voting conditions. The step of determining the measured temperature value based on the first temperature information and / or the second temperature information includes: The measured temperature value is determined based on the first temperature information and / or the second temperature information, and using the preset information voting conditions. The preset information voting conditions include one or more of the following: preset information priority, working status of the first control module and the second control module, and information acquisition time.

18. The method according to claim 16, characterized in that, The method further includes: If the measured pressure value exceeds the first pressure threshold or the measured temperature value exceeds the first temperature threshold, a bleed air shut-off command and corresponding overpressure alarm information or overtemperature alarm information are generated, and the bleed air shut-off command is used to control the regulating valve to close. If the measured pressure value is lower than the second pressure threshold or the measured temperature value is lower than the second temperature threshold, a low pressure alarm message or a low temperature alarm message is generated accordingly; the first pressure threshold is greater than the second pressure threshold, and the first temperature threshold is greater than the second temperature threshold.

19. The method according to claim 18, characterized in that, The method further includes: The system acquires alarm information and generates a bleed air shut-off command in response to the bleed air shut-off operation, and uses the bleed air shut-off command to control the regulating valve to close; the bleed air shut-off operation is an operation performed by the operator based on the alarm information, which is one or more of overpressure alarm information and overtemperature alarm information.

20. The method according to claim 14, characterized in that, The method further includes: In the event of a failure of the drive control device or control equipment, a bleed air shut-off command is generated to control the closing of the regulating valve.

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