Method, device, system and equipment for controlling rotating speed of auxiliary power device and medium

Abstract

The invention discloses an auxiliary power device rotating speed control method, device, system and equipment and a medium. The rotating speed control method for the auxiliary power device comprises the steps that when an air guide valve is in an open state, the real-time rotating speed output by the auxiliary power device is obtained; according to the real-time rotating speed, PI parameters controlled by the rotating speed of the auxiliary power device are adjusted, and an anti-surge valve is controlled to be opened and closed. According to the scheme, overshoot of the rotating speed of the auxiliary power device is avoided, and stable control over the rotating speed of the auxiliary power device in the opening process of the air guide valve is achieved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of auxiliary power devices, and in particular to a method, device, system, equipment and medium for controlling the rotation speed of an auxiliary power device. Background Art

[0002] In the aviation field, the role of the auxiliary power unit (APU) is to provide compressed air or power to the aircraft on the ground or in the air. At present, some models of APU use electric-controlled pneumatic valves to control the starting of aircraft engine bleed air or environmental control bleed air requirements based on time and financial costs and the difficulty of implementation. After the APU speed reaches the target speed, when the bleed air switch command sent by the aircraft is received, the digital electronic controller (DECU) will issue a drive command to the electric-controlled pneumatic valve to open or close it according to the control logic. When the electric-controlled pneumatic valve is open, the load on the bleed air pipeline changes greatly, which will cause the APU speed to change rapidly. However, there is a lag in the fuel system and combustion, and it is impossible to quickly respond to the APU speed change control, which can easily cause the APU speed to overshoot. Summary of the invention

[0003] The present invention provides a method, device, system, equipment and medium for controlling the rotation speed of an auxiliary power unit, so as to avoid overshoot of the rotation speed of the auxiliary power unit and realize stable control of the rotation speed of the auxiliary power unit during the opening process of the air induction valve.

[0004] In a first aspect, an embodiment of the present invention provides a method for controlling the rotation speed of an auxiliary power unit, the method comprising:

[0005] When the air induction valve is in the open state, the real-time speed output by the auxiliary power unit is obtained;

[0006] The PI parameters of the auxiliary power unit speed control are adjusted according to the real-time speed and the opening and closing of the anti-surge valve are controlled.

[0007] Optionally, adjusting the PI parameters of the auxiliary power unit speed control and controlling the opening and closing of the anti-surge valve according to the real-time speed includes:

[0008] When the real-time speed is less than the first preset speed, the PI parameter of the auxiliary power unit speed control is adjusted to be the first PI parameter;

[0009] When the real-time speed is greater than the second preset speed and less than the stable speed, the PI parameter for the auxiliary power unit speed control is adjusted to be the second PI parameter;

[0010] When the real-time speed is greater than the second preset speed, and the second preset speed continues to increase, the PI parameter of the auxiliary power unit speed control is adjusted to the first PI parameter, and the anti-surge valve is controlled to open;

[0011] When the real-time speed is less than the second preset speed and greater than the stable speed, adjusting the PI parameter of the auxiliary power unit speed control to the second PI parameter;

[0012] When the real-time rotation speed is less than the second preset rotation speed and greater than the stable rotation speed, and is maintained for a preset time, the PI parameter for the auxiliary power unit rotation speed control is adjusted to a third PI parameter.

[0013] Optionally, the method further includes:

[0014] Obtaining the opening frequency of the anti-surge valve;

[0015] When the opening frequency of the anti-surge valve is greater than the preset frequency, the PI parameter for adjusting the rotational speed control of the auxiliary power unit is adjusted to be a fourth PI parameter.

[0016] Optionally, the process of the air induction valve being in an open and holding state includes:

[0017] The air induction valve receives a switch instruction to put the air induction valve into an initial open state;

[0018] During the first preset time, the air induction valve is in a fully open state;

[0019] After the first preset time, the air induction valve receives a closing instruction to put the air induction valve in a closed state; wherein the open state includes the initial open state, the fully open state and the closed state.

[0020] Optionally, after the air induction valve receives a switch instruction and is in an open state, the method further includes:

[0021] Within a second preset time after the air induction valve receives the switch command, receiving the anti-surge valve closing command to put the anti-surge valve in the initial closed state;

[0022] After the air induction valve receives the closing instruction, the method further comprises:

[0023] Within a second preset time after the induction valve receives the closing instruction, an anti-surge valve opening instruction is received to place the anti-surge valve in a fully open state.

[0024] Optionally, the PI parameter is related to the amount of fuel.

[0025] In a second aspect, an embodiment of the present invention further provides a speed control device for an auxiliary power unit, the device comprising:

[0026] A speed acquisition module, which acquires the real-time speed output by the auxiliary power unit when the air induction valve is in the open state;

[0027] The execution module adjusts the PI parameters of the auxiliary power unit speed control and controls the opening and closing of the anti-surge valve according to the real-time speed.

[0028] In a third aspect, an embodiment of the present invention further provides an auxiliary power unit speed control system, the system comprising: a control module for executing the auxiliary power unit speed control method described in the first aspect above, and also comprising: an auxiliary power unit, an air inlet valve between the auxiliary power unit and the aircraft, and an anti-surge valve between the auxiliary power unit and an exhaust module.

[0029] In a fourth aspect, an embodiment of the present invention provides an electronic device, the electronic device comprising:

[0030] at least one processor; and

[0031] a memory communicatively connected to the at least one processor; wherein,

[0032] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the auxiliary power unit speed control method described in the first aspect.

[0033] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the auxiliary power unit speed control method described in the first aspect when executed.

[0034] In an embodiment of the present invention, when the air induction valve is in an open state, the real-time rotational speed of the auxiliary power unit output is obtained; the PI parameters of the auxiliary power unit speed control and the opening and closing of the anti-surge valve are adjusted according to the real-time rotational speed. In this way, the auxiliary power unit speed overshoot is avoided by using the PI parameters and controlling the opening and closing of the anti-surge valve, thereby achieving smooth control of the auxiliary power unit speed during the opening of the air induction valve.

[0035] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1It is a flow chart of a method for controlling the rotation speed of an auxiliary power unit provided by an embodiment of the present invention;

[0038] Figure 2 It is a structural schematic diagram of a rotation speed control system of an auxiliary power unit provided by an embodiment of the present invention;

[0039] Figure 3 is a flow chart of another auxiliary power unit speed control method provided by an embodiment of the present invention;

[0040] Figure 4 It is a real-time speed relationship diagram of the air induction valve, the anti-surge valve and the auxiliary power unit provided by the embodiment of the present invention;

[0041] Figure 5 is a flow chart of another auxiliary power unit speed control method provided by an embodiment of the present invention;

[0042] Figure 6 It is a structural schematic diagram of a rotation speed control device for an auxiliary power unit provided by an embodiment of the present invention;

[0043] Figure 7 It is a structural schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0046] Figure 1is a flow chart of a method for controlling the rotation speed of an auxiliary power unit provided by an embodiment of the present invention; this embodiment is applicable to the case where the rotation speed of an auxiliary power unit is controlled, and the method can be executed by a rotation speed control device of the auxiliary power unit, such as Figure 1 As shown, the method specifically comprises the following steps:

[0047] S110, when the air induction valve is in an open state, obtaining a real-time rotation speed output by the auxiliary power unit;

[0048] Among them, this embodiment is applicable to the auxiliary power unit speed control system, Figure 2 is a schematic diagram of the structure of a rotation speed control system of an auxiliary power unit provided by an embodiment of the present invention; Figure 2 As shown, the system includes an auxiliary power unit 10, an air bleed valve 20 between the auxiliary power unit and the aircraft, an anti-surge valve 30 between the auxiliary power unit and the exhaust module, and a control module 40; the auxiliary power unit may include a turbine and a compressor; the turbine rotates under the impact of high-temperature and high-pressure airflow to drive the compressor to do work, compressing the gas entering the compressor; the compressed gas enters the downstream through the air bleed valve 20 to provide compressed gas to the aircraft; generally, when the turbine is started, the speed changes rapidly, which will cause a high pressure in the compressor and surge may occur, and the anti-surge valve can be used to relieve pressure and prevent surge; after the turbine is started, the air bleed valve 20 can be controlled to be in an open state. When the air bleed valve 20 is in an open state, the compressed gas in the compressor provides compressed gas to the aircraft; the air bleed valve is in an open state. The open state process may include the entire process of the air bleed valve being in the initial open state, the fully open state and the closed state; when the auxiliary power unit is in the initial open state, the load on the air bleed duct between the auxiliary power unit and the aircraft will suddenly increase; when the auxiliary power unit is in the closed state, the load on the air bleed duct between the auxiliary power unit and the aircraft will suddenly decrease; in the fully open state, under the influence of external factors, the load on the air bleed duct between the auxiliary power unit and the aircraft will also suddenly increase or decrease; in the above processes, the sudden increase or decrease in the load on the air bleed duct between the auxiliary power unit and the aircraft will cause the turbine speed to change unstably; in this embodiment, during the process of the air bleed valve being in the open state, the control module 40 can obtain the real-time speed of the auxiliary power unit collected by the speed sensor to subsequently achieve smooth control of the speed.

[0049] S120, adjusting the PI parameters of the auxiliary power unit speed control and controlling the opening and closing of the anti-surge valve according to the real-time speed.

[0050] Specifically, when the load on the bleed air duct between the auxiliary power unit and the aircraft suddenly increases, the turbine speed will drop. At this time, the PI parameter of the auxiliary power unit speed control can be adjusted according to the specific size of the real-time speed, so as to maintain the real-time speed stable at the stable speed of 100%; it can be understood that when the difference between the real-time speed and the stable speed of 100% is small, the PI parameter of the PI control is small; when the difference between the real-time speed and the stable speed of 100% is large, the PI parameter of the PI control is large; the PI parameter is related to the amount of fuel; adjusting the PI parameter means adjusting the fuel amount, and then the speed can be adjusted;

[0051] When the load on the bleed air duct between the auxiliary power unit and the aircraft suddenly drops, the turbine speed will increase. At this time, the PI parameters of the auxiliary power unit speed control can be adjusted according to the specific size of the real-time speed, so as to maintain the real-time speed stable at the stable speed of 100%; it can be understood that when the difference between the real-time speed and the stable speed of 100% is small, the PI parameter of the PI control is small; when the difference between the real-time speed and the stable speed of 100% is large, the PI parameter of the PI control is large; the PI parameter is related to the amount of fuel; adjusting the PI parameter means adjusting the fuel amount, which can adjust the speed; at the same time, the anti-surge valve can also be controlled to open, so that a part of the compressed gas output by the compressor can be discharged through the anti-surge valve to meet the current air load demand on the bleed air duct. At the same time, it avoids the increase in the speed of the auxiliary power unit due to the reduction of the air load on the bleed air duct.

[0052] In this embodiment, when the air induction valve is in the open state, the real-time rotational speed of the auxiliary power unit output is obtained; the PI parameters of the auxiliary power unit speed control are adjusted according to the real-time rotational speed and the opening and closing of the anti-surge valve are controlled, thereby avoiding excessive overshoot of the auxiliary power unit speed and achieving smooth control of the auxiliary power unit speed during the opening of the air induction valve.

[0053] Optionally, based on the above embodiment, step S120 is further refined. Figure 3 FIG. 1 is a flow chart of another auxiliary power unit speed control method provided by an embodiment of the present invention; Figure 3 As shown, the method specifically comprises the following steps:

[0054] S210, when the air induction valve is in the open state, obtaining the real-time rotation speed of the auxiliary power unit;

[0055] in, Figure 4 : is a real-time speed relationship diagram of the air induction valve, the anti-surge valve and the auxiliary power unit provided by the embodiment of the present invention; Figure 4As shown, specifically, the process of the air induction valve being in the open state includes: the air induction valve receives a switch command (i.e., receives a high level) to put the air induction valve in the initial open state; within a first preset time t1, the air induction valve is in a fully open state; after the first preset time t1, the air induction valve receives a closing command (i.e., receives a low level) to put the air induction valve in the closed state; wherein the open state includes the initial open state, the fully open state and the closed state.

[0056] Continue to refer to Figure 4 , after the air induction valve receives the switch command and is in the open state, it also includes: within a second preset time T1 (generally 1 second) after the air induction valve receives the switch command, receiving an anti-surge valve closing command (i.e. receiving a high level) to put the anti-surge valve in an initial closed state (generally, the anti-surge valve plays an anti-surge role in the startup stage, and the anti-surge valve is always in the open state);

[0057] It should be noted that the reason for receiving the anti-surge valve closing command within the second preset time T1 (generally 1s) after the induction valve receives the switch command is that due to the internal structure of the induction valve, the valve cannot be fully opened when it receives the switch command, and the compressed gas of the compressor will not be fully delivered to the aircraft; therefore, the anti-surge valve closing command can be received within the second preset time T1 (generally 1s) after the induction valve receives the switch command to put the anti-surge valve in an initial closed state, so that the closing of the anti-surge valve after the second preset time will not affect the delivery of compressed gas by the induction valve.

[0058] It should also be noted that after the bleed air valve is in a closed state upon receiving a closing command, the process further includes: receiving an anti-surge valve opening command (i.e. receiving a low level) within a third preset time T2 (generally 5 seconds) after the bleed air valve receives the closing command to make the anti-surge valve in a fully open state. Similarly, due to the internal structure of the bleed air valve, when it receives a closing command, the valve cannot be fully opened, and the compressed gas of the compressor will not completely stop being delivered to the aircraft. At this time, the anti-surge valve can be opened after extending the third preset time T2.

[0059] S220, when the real-time speed is less than the first preset speed and the rate of change of the real-time speed is a negative value, adjusting the PI parameter of the auxiliary power unit speed control to the first PI parameter;

[0060] Among them, when the load on the air duct increases, the real-time speed will drop; specifically, when the real-time speed is less than the first preset speed (such as: 98.5%), and the rate of change of the real-time speed is a negative value, the speed drops significantly at this time, and the PI parameter can be adjusted to the first PI parameter; the fuel quantity parameter corresponding to the first PI parameter is larger, then the real-time speed can be quickly maintained at a steady-state speed of 100%; it can be understood that at this time the anti-surge valve is maintained in a closed state.

[0061] S230, when the real-time speed is greater than the second preset speed, and the second preset speed continues to increase, adjusting the PI parameter of the auxiliary power unit speed control to the first PI parameter, and controlling the anti-surge valve to open;

[0062] Among them, the second preset speed is greater than the steady-state speed; when the load on the air bleed pipe is reduced, the real-time speed will increase; specifically, when the real-time speed is greater than the second preset speed (such as 106.5%), and the second preset speed continues to increase, the speed increases significantly at this time, and the PI parameter can also be adjusted to the first PI parameter; the fuel quantity parameter corresponding to the first PI parameter is relatively large at this time, so that a certain speed stability can be maintained; in addition, the anti-surge valve can be adjusted from the initial closed state to the adjusted open state at the same time, at this time, a part of the compressed gas of the compressor is discharged through the anti-surge valve, thereby further reducing the real-time speed; in this way, the auxiliary power unit speed overshoot is avoided by controlling the PI parameters and the opening and closing of the anti-surge valve.

[0063] S240, when the real-time speed is less than the second preset speed and greater than the stable speed, adjusting the PI parameter of the auxiliary power unit speed control to the second PI parameter;

[0064] Among them, when the load on the air bleed pipe decreases, the real-time speed is less than the second preset speed and greater than the stable speed. At this time, the speed increase is not obvious. The PI parameter of the auxiliary power unit speed control can be adjusted to the second PI parameter. At this time, the fuel quantity parameter corresponding to the second PI parameter is small, and the speed can also be maintained stable. At the same time, since the speed increase is not obvious at this time, the anti-surge valve can be controlled to maintain the initial closed state.

[0065] S250: When the real-time rotation speed is less than the second preset rotation speed and greater than the stable rotation speed, and is maintained for a preset time, adjust the PI parameter of the auxiliary power unit rotation speed control to a third PI parameter.

[0066] Among them, when the load on the air bleed pipe decreases, when the real-time speed is less than the second preset speed and greater than the stable speed, and is maintained for the preset time, it indicates that the speed is relatively stable at this time, and the PI parameter of the auxiliary power unit speed control can be adjusted to the third PI parameter. At this time, the third PI parameter corresponds to a smaller fuel quantity parameter, so the speed can be maintained stable; at the same time, since the speed is relatively stable at this time, the anti-surge valve can be controlled to maintain the initial closed state.

[0067] This embodiment specifically explains how to adjust different PI parameters and control the anti-surge valve to different states according to different real-time speeds when the load is unloaded, so as to avoid overshoot of the auxiliary power unit speed. When the load of the auxiliary power unit increases, it is specifically explained how to adjust different PI parameters according to the different real-time speeds, so that when the auxiliary power unit is loaded with different loads, the speed of the auxiliary power unit can be smoothly controlled during the opening of the air induction valve.

[0068] On the basis of the above embodiment, considering that when the air induction valve is in the open state, multiple load increases or decreases may occur, the real-time speed may oscillate multiple times, and the anti-surge valve may open multiple times; this embodiment describes the problem of multiple oscillations of the speed; Figure 5 FIG. 1 is a flow chart of another auxiliary power unit speed control method provided by an embodiment of the present invention; Figure 5 As shown, the method specifically comprises the following steps:

[0069] S310, when the air induction valve is in the open state, obtaining the real-time rotation speed of the auxiliary power unit;

[0070] S320, when the real-time speed is less than the first preset speed and the rate of change of the real-time speed is a negative value, adjusting the PI parameter of the auxiliary power unit speed control to the first PI parameter;

[0071] S330, when the real-time speed is greater than the second preset speed, and the second preset speed continues to increase, adjusting the PI parameter of the auxiliary power unit speed control to the first PI parameter, and controlling the anti-surge valve to open;

[0072] S340, when the real-time speed is less than the second preset speed and greater than the stable speed, adjusting the PI parameter of the auxiliary power unit speed control to the second PI parameter;

[0073] S350: When the real-time rotation speed is less than the second preset rotation speed and greater than the stable rotation speed, and is maintained for a preset time, the PI parameter for the auxiliary power unit rotation speed control is adjusted to a third PI parameter.

[0074] S360, obtaining the opening frequency of the anti-surge valve, and when the opening frequency of the anti-surge valve is greater than a preset frequency, adjusting the PI parameter of the auxiliary power unit speed control to a fourth PI parameter.

[0075] Among them, when the anti-surge valve is in the regulated open state for a period of time, the real-time speed of the auxiliary power unit gradually returns to stability. At this time, the anti-surge valve can be controlled to change from the regulated open state to the regulated closed state. However, when multiple load drops occur, the anti-surge valve will be repeatedly in the open state, that is, the speed will oscillate (see speed oscillation and repeated opening of the anti-surge valve for details). Figure 4Dashed box), this embodiment aims at the speed oscillation problem by obtaining the opening frequency of the anti-surge valve; when the opening frequency of the anti-surge valve is greater than the preset frequency, the PI parameter of the auxiliary power unit speed control can be adjusted to the fourth PI parameter; the fuel quantity corresponding to the fourth PI parameter is between the first PI parameter and the second PI parameter, avoiding the overshoot problem caused by directly using the first PI parameter, and solving the speed oscillation problem of the auxiliary power unit.

[0076] Based on the above embodiments, the present embodiment takes into account the problem of oscillation of the auxiliary power unit. By obtaining the opening frequency of the anti-surge valve, when the opening frequency of the anti-surge valve is greater than the preset frequency, the PI parameter of the auxiliary power unit speed control can be adjusted to the fourth PI parameter, thereby avoiding the problem of oscillation of the auxiliary power unit.

[0077] An embodiment of the present invention further provides an auxiliary power unit speed control device, which can execute the auxiliary power unit speed control method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects of the execution method. Figure 6 The present invention also provides a schematic diagram of the structure of a rotation speed control device for an auxiliary power unit; Figure 6 As shown, the device comprises:

[0078] The rotation speed acquisition module 100 acquires the real-time rotation speed output by the auxiliary power unit when the air induction valve is in the open state;

[0079] The execution module 200 adjusts the PI parameters of the auxiliary power unit speed control and controls the opening and closing of the anti-surge valve according to the real-time speed.

[0080] The embodiment of the present invention also provides a speed control system for an auxiliary power unit, and further referring to Figure 2 The system includes: a control module 40 for executing the auxiliary power unit speed control method of the above embodiment, and also includes: an auxiliary power unit 10, an air inlet valve 20 between the auxiliary power unit and the aircraft, and an anti-surge valve 30 between the auxiliary power unit and the exhaust module. The auxiliary power unit speed control system provided by the embodiment of the present invention has the corresponding functional modules and beneficial effects of the execution method.

[0081] An embodiment of the present invention further provides an electronic device, Figure 7It is a structural schematic diagram of an electronic device provided by an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as embedded computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0082] like Figure 7 As shown, the electronic device 01 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 100 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0083] A number of components in the electronic device 01 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 100 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0084] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a method for controlling the speed of an auxiliary power unit.

[0085] In some embodiments, an auxiliary power unit speed control method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 01 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the auxiliary power unit speed control method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute an auxiliary power unit speed control method in any other appropriate manner (e.g., by means of firmware).

[0086] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0087] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0088] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0089] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0090] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0091] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0092] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0093] The above specific implementations do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0094] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for controlling the rotation speed of an auxiliary power unit, characterized in that: include: When the air induction valve is in the open state, the real-time speed output by the auxiliary power unit is obtained; The PI parameters of the auxiliary power unit speed control are adjusted according to the real-time speed and the opening and closing of the anti-surge valve are controlled.

2. The auxiliary power unit speed control method according to claim 1, characterized in that: According to the real-time speed, the PI parameters of the auxiliary power unit speed control are adjusted and the opening and closing of the anti-surge valve are controlled, including: When the real-time speed is less than the first preset speed, the PI parameter of the auxiliary power unit speed control is adjusted to be the first PI parameter; When the real-time speed is greater than the second preset speed and less than the stable speed, the PI parameter for the auxiliary power unit speed control is adjusted to the second PI parameter; When the real-time speed is greater than the second preset speed, and the second preset speed continues to increase, the PI parameter of the auxiliary power unit speed control is adjusted to the first PI parameter, and the anti-surge valve is controlled to open; When the real-time speed is less than the second preset speed and greater than the stable speed, adjusting the PI parameter of the auxiliary power unit speed control to the second PI parameter; When the real-time rotation speed is less than the second preset rotation speed and greater than the stable rotation speed, and is maintained for a preset time, the PI parameter for the auxiliary power unit rotation speed control is adjusted to a third PI parameter.

3. The auxiliary power unit speed control method according to claim 2, characterized in that: Also includes: Obtaining the opening frequency of the anti-surge valve; When the opening frequency of the anti-surge valve is greater than the preset frequency, the PI parameter for adjusting the rotational speed control of the auxiliary power unit is adjusted to be a fourth PI parameter.

4. The auxiliary power unit speed control method according to claim 1, characterized in that: The process of the air inlet valve being in the open state includes: The air induction valve receives a switch instruction to put the air induction valve into an initial open state; During the first preset time, the air induction valve is in a fully open state; After the first preset time, the air induction valve receives a closing instruction to put the air induction valve in a closed state; wherein the open state includes the initial open state, the fully open state and the closed state.

5. The auxiliary power unit speed control method according to claim 4, characterized in that: After the air induction valve receives a switch instruction and is in an open state, the method further comprises: Within a second preset time after the air induction valve receives the switch command, receiving the anti-surge valve closing command to put the anti-surge valve in an initial closed state; After the air induction valve receives the closing instruction, the method further comprises: Within a second preset time after the induction valve receives the closing instruction, an anti-surge valve opening instruction is received to place the anti-surge valve in a fully open state.

6. The auxiliary power unit speed control method according to claim 1, characterized in that: The PI parameter is related to the amount of fuel.

7. A speed control device for an auxiliary power unit, characterized in that: include: A speed acquisition module, which acquires the real-time speed output by the auxiliary power unit when the air induction valve is in the open state; The execution module adjusts the PI parameters of the auxiliary power unit speed control and controls the opening and closing of the anti-surge valve according to the real-time speed.

8. An auxiliary power unit speed control system, characterized in that: include: The control module for executing the auxiliary power unit speed control method according to any one of claims 1 to 6 further includes: an auxiliary power unit, an air induction valve between the auxiliary power unit and the aircraft, and an anti-surge valve between the auxiliary power unit and the exhaust module.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the auxiliary power unit speed control method according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the auxiliary power unit speed control method according to any one of claims 1 to 6 when executed.

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