Method and system for regulating the environmental simulation of a test bench, device, medium

Abstract

The application discloses an environment simulation adjustment method and system, equipment and a medium for a starting rule test bench, which decouples environment simulation parameters of the starting rule test bench into three target control parameters, namely, mixing temperature, front cabin pressure and rear cabin pressure, and analyzes decoupling of control of each target control parameter and a related valve, determines a valve group related to each target control parameter, and then realizes separate automatic adjustment of each target control parameter by controlling opening degrees of the corresponding valve groups, reduces influence on other target control parameters, greatly simplifies an adjustment process of the environment simulation parameters, and greatly improves automatic adjustment precision.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental simulation of a starting regularity test bench, and in particular to an environmental simulation adjustment method and system, electronic equipment, and a computer-readable storage medium for a starting regularity test bench. Background Art

[0002] Relevant specifications stipulate that high and low temperature starting and acceleration tests, as well as plateau starting tests, are required when finalizing the design of an aircraft engine. These tests are generally conducted on a starting pattern test bench that can simulate high and low temperature and negative pressure environments, or on a modified high-altitude simulation test bench. The starting pattern test bench primarily includes an air supply control system, an environmental test chamber, and an exhaust control system. The air supply control system mixes the low-temperature air and high-temperature air provided by the air source system to obtain mixed air of a certain temperature, pressure, and flow rate. The aircraft engine is placed in the environmental test chamber. The mixed air enters the environmental test chamber for inhalation by the engine, and is discharged to the exhaust control system after combustion. The exhaust control system cools the high-temperature combustion gas after combustion in the engine, adjusts the exhaust back pressure to the pressure corresponding to the simulated altitude, and then discharges it into the air source system's exhaust unit for pressurization and discharge into the atmosphere.

[0003] The environmental parameters typically simulated on a starting schedule test bench include aircraft engine flight altitude and flight Mach number. Flight altitude represents the corresponding exhaust pressure during engine testing, and flight Mach number is typically converted to engine inlet total pressure and exhaust temperature for simulation. Because starting schedule test benches simulate both internal and external engine flows, and engine tests draw air directly from the test chamber, the engine inlet total temperature and pressure are generally assumed to be consistent with the temperature and pressure of the rear cabin. During aircraft engine testing, engine air mass flow varies significantly at different altitudes, and air flow also varies significantly under different conditions at the same altitude. For example, cold start and acceleration tests require the engine to accelerate from an idle state to its maximum state within 0.5 seconds. This can lead to dramatic changes in engine inlet air flow within a very short period of time, requiring the test bench's piping system to respond quickly. In practice, the control system, which targets inlet total temperature, inlet total pressure, and exhaust pressure, is highly coupled. High control accuracy is required during steady-state performance testing, while excellent dynamic regulation is essential during transient testing, adapting to rapid changes in engine conditions to maintain constant inlet and exhaust pressures.

[0004] Existing start-up test bench intake and exhaust control systems primarily use a cold and hot air source mixing method to adjust the inlet total temperature, adjust the inlet total pressure by changing the air flow rate entering the front cabin of the environmental test chamber, and adjust the exhaust ambient pressure by changing the flow rate of the outside atmosphere into the exhaust pipe. The control process primarily utilizes a programmable controller and sensor. The sensor monitors pressure and temperature signals. The programmable controller compares the collected pressure and temperature signals with target values ​​and adjusts the temperature and pressure by adjusting the opening of a single or combined valve. For example, patent CN115756032A discloses a method for an aircraft engine high-altitude environmental control system. The system regulates the environment using fixed air supply flow, pressure, and temperature, as well as fixed exhaust pressure and flow. All flows, pressures, and temperatures are self-balanced by the control system, eliminating the need for an air source system or air compressor system. During the automatic control process, the valve opening is adjusted by monitoring changes in the front cabin pressure and temperature to adjust the inlet total temperature and pressure. However, actual parameter adjustment is a complex, multivariable, nonlinear, and strongly coupled process. The three control variables—inlet total temperature, inlet total pressure, and exhaust pressure—interact with each other. Adjusting a valve to change one control variable can also affect other control variables, making the entire adjustment process extremely complex and resulting in low automatic control accuracy. Furthermore, during power conversion testing, air flow can change dramatically in a very short period of time. There is a lag in the response when monitoring changes in the front cabin pressure and adjusting the valve opening, making it difficult to meet the required accuracy for environmental parameter simulation during power conversion testing. Furthermore, the starting schedule test bench simulates the engine operating environment through complex piping and a combination of more than twenty valves. Due to the complex principles and the coupling of multiple factors, there is often no unique solution for simulating the same operating condition. Therefore, environmental simulation adjustments typically rely on human experience and judgment to adjust and simulate different environments, making automatic adjustment of environmental simulation parameters impossible. Summary of the Invention

[0005] The present invention provides an environmental simulation adjustment method and system for a starting law test bench, electronic equipment, and a computer-readable storage medium, which can realize independent automatic adjustment of each target control parameter, reduce the impact on other target control parameters, greatly simplify the adjustment process of the environmental simulation parameters, and thus greatly improve the automatic adjustment accuracy.

[0006] According to one aspect of the present invention, a method for adjusting an environment simulation of a starting law test bench is provided, comprising the following steps:

[0007] Decouple the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure, and determine the valve group related to each target control parameter;

[0008] The mixing temperature is adjusted by controlling the valve group related to the mixing temperature to adjust the cold air supply flow rate and the hot air supply flow rate;

[0009] Controlling a valve group related to the front cabin pressure according to the state change of the engine to adjust the front cabin pressure;

[0010] The rear cabin pressure is regulated by adjusting the flow of external atmospheric air into the exhaust line.

[0011] Furthermore, the decoupling results of the environmental simulation parameters are:

[0012]

[0013] Where h represents the potential height, P es Indicates the rear cabin pressure, P tii represents the front cabin pressure, r0 represents the radius of the earth, Ma represents the Mach number, T represents the temperature, T mix Indicates the mixing temperature.

[0014] Furthermore, in the process of adjusting the mixing temperature, the cold air supply flow rate and the hot air supply flow rate are also adjusted based on the following formula:

[0015]

[0016]

[0017] Among them, W 热 Indicates the hot gas supply flow rate, W 冷 Indicates the cooling air supply flow rate, T 冷 Indicates the cooling air supply temperature, T 热 Indicates the hot gas supply temperature, T indicates the target temperature, W 总 Indicates the total gas supply flow.

[0018] Furthermore, in the process of adjusting the blending temperature, when the blending temperature enters the target temperature hysteresis range, the hysteresis adjustment is started to control the blending temperature to be stable within the error range of the target temperature.

[0019] Furthermore, when performing a power conversion test, the control advance of the valve group related to the front cabin pressure is calculated based on the following formula, and the valve group is controlled and adjusted based on the control advance:

[0020]

[0021] Among them, Q represents the adjustment ratio, W represents the intake flow corresponding to the throttle angle of the engine from slow to maximum state, and W 总 Indicates the total gas supply flow.

[0022] Furthermore, when adjusting the front cabin pressure, the valve group is controlled to operate according to the throttle lever signal.

[0023] Furthermore, two valves are provided between the external atmosphere and the exhaust pipeline. The two valves are of different sizes, and the coarse and fine adjustments of the rear cabin pressure are achieved by controlling the opening of the two valves.

[0024] In addition, the present invention also provides an environmental simulation and adjustment system for a starting law test bench, comprising:

[0025] The environmental parameter decoupling module is used to decouple the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure, and determine the valve group related to each target control parameter;

[0026] A mixing temperature regulating module is used to regulate the cold air supply flow rate and the hot air supply flow rate by controlling a valve group related to the mixing temperature, so as to regulate the mixing temperature;

[0027] A front cabin pressure regulating module is used to control a valve group related to the front cabin pressure according to changes in the engine state to regulate the front cabin pressure;

[0028] The rear cabin pressure regulating module is used to regulate the rear cabin pressure by adjusting the flow of external atmospheric air supply entering the air extraction pipeline.

[0029] In addition, the present invention also provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and the processor is configured to execute the steps of the above method by calling the computer program stored in the memory.

[0030] In addition, the present invention also provides a computer-readable storage medium for storing a computer program for performing environmental simulation adjustment of a starting law test bench, wherein the computer program executes the steps of the above-mentioned method when running on a computer.

[0031] The present invention has the following beneficial effects:

[0032] The environmental simulation adjustment method of the starting law test bench of the present invention first decouples the environmental simulation parameters of the starting law test bench into three target control parameters of mixing temperature, front cabin pressure and rear cabin pressure, and performs decoupling analysis on the control of each target control parameter and the related valve, determines the valve group related to each target control parameter, and then realizes the separate automatic adjustment of each target control parameter by controlling the opening of the corresponding valve group, reducing the influence on other target control parameters, greatly simplifying the adjustment process of the environmental simulation parameters, and thus greatly improving the automatic adjustment accuracy.

[0033] In addition, the environmental simulation and adjustment system of the starting law test bench of the present invention also has the above advantages.

[0034] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 It is a flow chart of the environmental simulation adjustment method of the starting law test bench in the preferred embodiment of the present application.

[0037] Figure 2 It is a schematic diagram of the principle of the exhaust system after decoupling the valve in the preferred embodiment of the present application.

[0038] Figure 3 It is a schematic diagram of the module structure of the environmental simulation and adjustment system of the starting law test bench in another embodiment of the present application. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] Reference Figure 1 The preferred embodiment of the present application provides an environmental simulation adjustment method for a starting law test bench, comprising the following contents:

[0041] Step S1: Decoupling the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure, and rear cabin pressure, and determining the valve group associated with each target control parameter;

[0042] Step S2: regulating the cold air supply flow rate and the hot air supply flow rate by controlling a valve group related to the mixing temperature to adjust the mixing temperature;

[0043] Step S3: controlling the valve group related to the front cabin pressure according to the state change of the engine to adjust the front cabin pressure;

[0044] Step S4: The rear cabin pressure is adjusted by adjusting the flow rate of external atmospheric air supply entering the air extraction pipeline.

[0045] It can be understood that the environmental simulation adjustment method of the starting law test bench in this embodiment first decouples the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure, and performs a decoupling analysis on the control of each target control parameter and the related valve, determines the valve group related to each target control parameter, and then realizes the separate automatic adjustment of each target control parameter by controlling the opening of the corresponding valve group, thereby reducing the impact on other target control parameters, greatly simplifying the adjustment process of the environmental simulation parameters, and thus greatly improving the automatic adjustment accuracy.

[0046] It can be understood that in step S1, the main environmental simulation parameters of the starting law test bench are first decoupled and calculated. According to the principle of air supply and exhaust in the test cabin, the flight altitude, inlet temperature and Mach number are decoupled into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure. The decoupling result of the environmental simulation parameters is:

[0047]

[0048] Where h represents the potential height in meters, P es It represents the rear cabin pressure, that is, the exhaust pressure, in Pa, r0 represents the radius of the earth, which is 6356766m, P tii represents the front cabin pressure, that is, the total pressure at the engine inlet, Ma represents the Mach number, T represents the temperature, T mix Indicates the mixing temperature.

[0049] It can be understood that the present invention also decouples the control of the mixing temperature, the front cabin pressure and the rear cabin pressure from the control of the relevant valves. The part before the mixing section is used to control the air supply temperature and the total air supply flow. By setting a bypass line and adopting a reverse linkage control strategy, the front cabin pressure is regulated without basically affecting the rear cabin pressure, so that the front and rear cabin pressure adjustments are decoupled. At the same time, the rear cabin pressure is controlled by adjusting the air supply. In this way, the valve groups that are strongly related to the inlet total temperature, the inlet total pressure and the exhaust pressure are respectively confirmed. Among them, the decoupling results of the valve control are as follows: Figure 2 As shown, valves V101 and V103 are strongly correlated with the mixing temperature, valves V113 and V114 are strongly correlated with the front cabin pressure, and valves V121 and V122 are strongly correlated with the exhaust pressure. In addition, the present invention also determines the boundary adjustment and linkage logic of each valve group participating in the control of strongly correlated parameters. When the adjustment capacity of the corresponding valve group is limited, it can be linked with other valve groups for linkage and compensation. Under a few extreme conditions, such as when the front cabin pressure or the rear cabin pressure is limited, the total air supply flow rate W will be adjusted accordingly. 总To adjust the front and rear cabin pressures to the target values, specifically, when the front cabin pressure or the rear cabin pressure cannot be increased, the total air supply flow rate is increased; when the front cabin pressure or the rear cabin pressure cannot be reduced, the air supply flow rate is reduced. Through the above compensation mechanism, the system can basically cover the full range of high-altitude environment simulation.

[0050] It can be understood that in step S2, the mixing temperature is obtained by mixing and adjusting cold air and hot air of different flow rates. The cold air and hot air provided by the air supply unit of the gas source station are generally controlled by constant flow rate. The present invention changes the cold air flow entering the mixer by adjusting the opening of valve V101, and changes the hot air flow entering the mixer by adjusting the opening of valve V103, thereby adjusting the mixing temperature.

[0051] Optionally, the present invention takes into account the large hysteresis regulation characteristics of the mixing temperature (i.e., the inlet total temperature). Therefore, in the process of adjusting the mixing temperature, the cold air supply flow rate and the hot air supply flow rate are adjusted based on the following formula:

[0052]

[0053]

[0054] Among them, W 热 Indicates the hot gas supply flow rate, W 冷 Indicates the cooling air supply flow rate, T 冷 Indicates the cooling air supply temperature, T 热 Indicates the hot gas supply temperature, T indicates the target temperature, W 总 Indicates the total gas supply flow.

[0055] It can be understood that the present invention adjusts the mixing temperature by controlling the cold air supply flow and the hot air supply flow using a flow ratio calculation feedforward control algorithm, so that the mixing temperature can quickly reach the target temperature, greatly improving the adjustment response speed of the mixing temperature.

[0056] Furthermore, during the blending temperature adjustment process, hysteresis control is initiated when the blending temperature enters the target temperature hysteresis range to stabilize the blending temperature within the target temperature error range. This invention considers the need for flow measurement when using flow proportional calculation feedforward control, and the low measurement accuracy of variable temperature gas flow. Therefore, a hysteresis control method is introduced to maintain good stability after the blending temperature reaches the target temperature.

[0057] It can be understood that in step S3, after the mixing temperature is adjusted to the target temperature, part of the airflow at the outlet of the mixer enters the test chamber through valve V113 for absorption and combustion by the engine, and the other part is directly discharged into the exhaust pipe through valve V114, merges with the air after combustion of the engine in the exhaust pipe, and is then extracted by the exhaust unit of the gas source station. Therefore, the greater the air flow entering the test chamber through valve V113, the greater the simulated front cabin pressure. The present invention adjusts the opening of valves V113 and V114 according to the state change of the engine. When the engine is in a low state, the opening of valve V113 is controlled to be small. As the engine is in an upward push state, the required air flow gradually increases, then valve V113 is gradually opened, and valve V114 is closed, so that the air flow entering the test chamber meets the engine test requirements. When the engine is in a downward pull state, valve V113 is gradually closed and valve V114 is opened. Therefore, the present invention sets valves V113 and V114 to be reversely interlocked. When valve V113 gradually opens, valve V114 gradually closes. When valve V113 gradually closes, valve V114 gradually opens.

[0058] It is understood that when performing a power conversion test, the engine is generally required to accelerate from slow speed to maximum takeoff speed, or decelerate from maximum takeoff speed to slow speed within 0.5 seconds. This extremely short period of time requires that the engine intake flow rate undergoes significant changes. Therefore, valves V113 and V114 are required to have fast response and switching functions. The present invention utilizes electro-hydraulic valves capable of rapid operation. However, if the existing closed-loop control of the total inlet pressure of the engine is still used, i.e., the total inlet pressure changes first, and then the valves operate, the valve response will hardly meet the rapid changes in the engine's transient state. Alternatively, during the power conversion test, the present invention calculates the control lead of the valve group related to the front cabin pressure based on the following formula, and controls the valve group for adjustment based on this control lead:

[0059]

[0060] Among them, Q represents the adjustment ratio, W represents the intake flow corresponding to the throttle change angle of the engine from slow to maximum state, and W 慢车 ≤W≤W 最大 , W 慢车 Indicates the intake flow rate corresponding to the throttle lever angle in the slow state, W 最大 Indicates the intake air flow corresponding to the throttle lever angle at maximum takeoff state, W 总 Represents the total air flow. By employing lead control, using the ratio of intake air flow corresponding to the throttle angle from idle to maximum engine speed to total air flow as the adjustment ratio, rapid and precise adjustment of valve opening, and thus front cabin pressure, can be achieved.

[0061] In addition, during the vehicle test, the throttle lever is generally used to change the state of the engine, and the angle change of the throttle lever is used for valve control. When the throttle lever is actuated, on the one hand, a signal is sent to the CNC system to control the change of the engine state, and on the other hand, a signal is sent to the valve controller to control the valve to open or close in advance, thereby improving the control accuracy of the front cabin pressure.

[0062] It can be understood that in the step S4, the rear cabin pressure is adjusted by adjusting the external atmospheric air supply flow entering the exhaust pipeline, wherein the exhaust unit of the gas source station is generally controlled by a constant flow rate, the exhaust unit volume flow rate * air density = mixer outlet mass flow rate + air supply mass flow rate, the exhaust unit volume flow rate is constant, the mixer outlet mass flow rate is constant, the smaller the air supply mass flow rate, the smaller the air density, the smaller the corresponding exhaust pressure, the larger the air supply mass flow rate, the greater the air density, the greater the corresponding exhaust pressure. Therefore, the present invention changes the external atmospheric air supply flow rate by changing the opening of valves V121 and V122, thereby adjusting the exhaust pressure. Optionally, since the exhaust pressure regulation is relatively sensitive, the two valves V121 and V122 are set to be one large and one small, and the exhaust pressure is accurately regulated by coarse and fine adjustments.

[0063] In addition, if Figure 3 As shown, another embodiment of the present invention further provides an environmental simulation adjustment system for a starting law test bench, preferably using the environmental simulation adjustment method described above, the system comprising:

[0064] The environmental parameter decoupling module is used to decouple the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure, and determine the valve group related to each target control parameter;

[0065] A mixing temperature regulating module is used to regulate the cold air supply flow rate and the hot air supply flow rate by controlling a valve group related to the mixing temperature, so as to regulate the mixing temperature;

[0066] A front cabin pressure regulating module is used to control a valve group related to the front cabin pressure according to changes in the engine state to regulate the front cabin pressure;

[0067] The rear cabin pressure regulating module is used to regulate the rear cabin pressure by adjusting the flow of external atmospheric air supply entering the air extraction pipeline.

[0068] It can be understood that the environmental simulation adjustment system of the starting law test bench of this embodiment first decouples the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure, and performs a decoupling analysis on the control of each target control parameter and the related valve, determines the valve group related to each target control parameter, and then realizes the separate automatic adjustment of each target control parameter by controlling the opening of the corresponding valve group, thereby reducing the impact on other target control parameters, greatly simplifying the adjustment process of the environmental simulation parameters, and thus greatly improving the automatic adjustment accuracy.

[0069] In addition, another embodiment of the present invention further provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and the processor is configured to execute the steps of the above method by calling the computer program stored in the memory.

[0070] In addition, another embodiment of the present invention further provides a computer-readable storage medium for storing a computer program for performing environmental simulation adjustment of a starting pattern test bench, wherein the computer program executes the steps of the above-described method when running on a computer.

[0071] Common computer-readable storage media include: floppy disks, flexible disks, hard disks, magnetic tape, any other magnetic media, CD-ROMs, any other optical media, punch cards, paper tape, any other physical medium with a pattern of holes, random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), flash-erasable programmable read-only memory (FLASH-EPROM), any other memory chip or cartridge, or any other medium that can be read by a computer. Instructions can further be transmitted or received via a transmission medium. The term transmission medium may include any tangible or intangible medium that can be used to store, encode, or carry instructions for execution by a machine, and includes digital or analog communication signals or other intangible media that facilitate communication of such instructions. Transmission media include coaxial cables, copper wire, and fiber optics, including the wires of a bus used to transmit a computer data signal.

[0072] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiment of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal translation scripting language JavaScript, etc.

[0073] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0074] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0075] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0076] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0077] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

[0078] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for environmental simulation adjustment of a starting law test bench, characterized in that: Includes the following: Decouple the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure, and determine the valve group related to each target control parameter; The mixing temperature is adjusted by controlling the valve group related to the mixing temperature to adjust the cold air supply flow rate and the hot air supply flow rate; Controlling a valve group related to the front cabin pressure according to the state change of the engine to adjust the front cabin pressure; The rear cabin pressure is regulated by adjusting the flow of external atmospheric air into the air extraction line; Among them, the decoupling results of environmental simulation parameters are: Where h represents the potential height, P es Indicates the rear cabin pressure, P tii represents the front cabin pressure, r0 represents the radius of the earth, Ma represents the Mach number, T represents the temperature, T mix represents the mixing temperature Q, and H represents the flight altitude.

2. The environmental simulation adjustment method for the starting law test bench according to claim 1, characterized in that: In the process of adjusting the mixing temperature, the cold air supply flow rate and the hot air supply flow rate are also adjusted based on the following formula: Among them, W 热 Indicates the hot gas supply flow rate, W 冷 Indicates the cooling air supply flow rate, T 冷 Indicates the cooling air supply temperature, T 热 Indicates the hot gas supply temperature, T indicates the target temperature, W 总 Indicates the total gas supply flow.

3. The environmental simulation adjustment method for the starting law test bench according to claim 2, characterized in that: During the process of adjusting the blending temperature, when the blending temperature enters the target temperature hysteresis range, the hysteresis adjustment is turned on to control the blending temperature to be stable within the error range of the target temperature.

4. The environmental simulation adjustment method for the starting law test bench according to claim 1, characterized in that: During the power conversion test, the control advance of the valve group related to the front cabin pressure is calculated based on the following formula, and the valve group is controlled and adjusted based on the control advance: Among them, Q represents the adjustment ratio, W represents the intake flow corresponding to the throttle angle of the engine from slow to maximum state, and W 总 Indicates the total gas supply flow.

5. The environmental simulation adjustment method for the starting law test bench according to claim 1, characterized in that: When adjusting the front cabin pressure, the valve group is controlled according to the throttle lever signal.

6. The environmental simulation adjustment method for the starting law test bench according to claim 1, characterized in that: There are two valves between the external atmosphere and the exhaust pipeline. The two valves are of different sizes. By controlling the opening of the two valves, coarse and fine adjustment of the rear cabin pressure can be achieved.

7. An environmental simulation and adjustment system for a starting law test bench, using the environmental simulation and adjustment method for a starting law test bench according to any one of claims 1 to 6, characterized in that: include: The environmental parameter decoupling module is used to decouple the environmental simulation parameters of the starting law test bench into three target control parameters: mixing temperature, front cabin pressure and rear cabin pressure, and determine the valve group related to each target control parameter; A mixing temperature regulating module is used to regulate the cold air supply flow rate and the hot air supply flow rate by controlling a valve group related to the mixing temperature, so as to regulate the mixing temperature; A front cabin pressure regulating module is used to control a valve group related to the front cabin pressure according to changes in the engine state to regulate the front cabin pressure; The rear cabin pressure regulating module is used to regulate the rear cabin pressure by adjusting the flow of external atmospheric air supply entering the air extraction pipeline.

8. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a computer program, and the processor is configured to execute the steps of the method according to any one of claims 1 to 6 by calling the computer program stored in the memory.

9. A computer-readable storage medium for storing a computer program for performing environmental simulation adjustment of a starting law test bench, characterized in that: When the computer program is run on a computer, the steps of the method according to any one of claims 1 to 6 are executed.

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