Environmental simulation adjustment method and system of starting rule test bed, equipment and medium

Abstract

The invention discloses an environment simulation adjusting method and system for a starting rule test bed, equipment and a medium, and the method comprises the steps: firstly, decoupling the environment simulation parameters of the starting rule test bed into three target control parameters, namely mixing temperature, forecabin pressure and rear cabin pressure, and carrying out the decoupling analysis of each target control parameter and the control of a related valve; according to the method, the valve group related to each target control parameter is determined, then independent automatic adjustment of each target control parameter is achieved by controlling the opening degree of the corresponding valve group, the influence on other target control parameters is reduced, the adjustment process of the environment simulation parameters is greatly simplified, and therefore the automatic adjustment precision is greatly improved.

Description

Technical Field

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

[0002] Relevant specifications stipulate that high and low temperature starting and acceleration tests and plateau starting tests are required when the aircraft engine is designed and finalized. The tests are generally carried out on a starting law test bench that can simulate high and low temperature and negative pressure environments or a modified high-altitude simulation test bench. Among them, the starting law test bench mainly includes an air supply regulation system, an environmental test chamber, and an exhaust regulation system. The air supply regulation system mixes the low-temperature air and high-temperature air provided by the air source system to obtain mixed air with 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 the engine to inhale and is discharged to the exhaust regulation system after combustion. The exhaust regulation system cools the high-temperature fuel gas after the engine burns, and adjusts the exhaust back pressure to the pressure corresponding to the simulated altitude, and then discharges it into the air source system exhaust unit for pressurization and then discharges it to the atmosphere.

[0003] The environmental parameters that the starting law test bench generally needs to simulate mainly include the flight altitude and flight Mach number of the aircraft engine. The flight altitude is the exhaust environmental pressure corresponding to the engine test. The flight Mach number is generally converted into the engine inlet total pressure and exhaust temperature for simulation. Since the starting law test bench simulates both the internal and external flows of the engine, the engine directly inhales air from the test cabin during the test. The total temperature and total pressure of the engine inlet are generally considered to be consistent with the temperature and pressure of the rear cabin. During the aircraft engine test, the engine air mass flow rate changes greatly under different altitude environments, and the air flow rate changes greatly under different states at the same altitude. For example, in the low-temperature starting and acceleration test, the engine is required to accelerate from the slow state in the air to the maximum state within 0.5s. The engine inlet air flow rate will change sharply in a very short time. The pipe network system of the test bench should have the ability to respond quickly. In the actual regulation process, the regulation system with the inlet total temperature, inlet total pressure and exhaust pressure as the control target has the characteristics of high coupling. It is necessary to maintain a high control accuracy during the steady-state performance test, and it must have good dynamic regulation characteristics during the transient test, which can adapt to the rapid changes in the engine state to maintain the inlet pressure and exhaust pressure unchanged.

[0004] The existing start-up law test bench intake and exhaust adjustment system mainly uses the cold and hot air source mixing method to adjust the inlet total temperature, adjusts the inlet total pressure by changing the air flow entering the front cabin of the environmental test cabin, and adjusts the exhaust environment pressure by changing the flow of the outside atmosphere into the exhaust pipeline. The programmable controller and sensor are mainly used in the adjustment process. The sensor monitors the pressure and temperature signals. The programmable controller compares the collected pressure and temperature signals with the target value and changes 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 environment adjustment system, which is adjusted by a fixed air supply flow, pressure, temperature, and a fixed exhaust pressure and flow. All flows, pressures, and temperatures are self-balanced through the adjustment system, and no air source system or air compressor system is required for adjustment. In the automatic adjustment process, the valve opening is changed by collecting the changes in the pressure and temperature of the front cabin to adjust the inlet total temperature and total pressure. However, the actual parameter adjustment is a typical multivariable, nonlinear, and strongly coupled complex process. The three control variables of inlet total temperature, inlet total pressure, and exhaust pressure affect each other. By adjusting a valve to change a control variable, it may also affect other control variables, making the entire adjustment process particularly complex and the automatic control accuracy is not high. In addition, during the power conversion test, since the air flow rate will change sharply in a very short time, there is a lag in the response when the valve opening is changed by collecting the change in the front cabin pressure, which makes it difficult to meet the requirements of environmental parameter simulation accuracy during the power conversion test. In addition, the starting law test bench simulates the operating environment of the engine through complex pipelines and more than 20 valve combination controls. Due to the complex principles and the coupling of multiple factors, there is often no unique solution for the simulation of the same working condition. Therefore, the adjustment of environmental simulation usually depends on the experience of personnel, and the adjustment and simulation of different environments are completed by the judgment of the operator, and the automatic adjustment of environmental simulation parameters cannot be achieved. 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, there is provided an environmental simulation adjustment method for a starting law test bench, comprising the following contents:

[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 air extraction line.

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

[0012]

[0013] Where h represents the potential height, P es Represents 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, and 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 represents the hot gas supply temperature, T represents 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 turned on to control the blending temperature to be stable within the error range of the target temperature.

[0019] Furthermore, when performing 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 to be adjusted based on the control advance:

[0020]

[0021] Where 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 the front cabin pressure is adjusted, 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 air extraction pipeline. The two valves are of different sizes, and the coarse and fine adjustments of the rear cabin pressure are achieved by controlling the openings 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] An 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, used for regulating 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, used for controlling a valve group related to the front cabin pressure according to a state change of the engine, so as 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 rate of external atmospheric air supplement 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 executes 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 method described above 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 decouples each target control parameter from the control of related valves, determines the valve group related to each target control parameter, and then realizes independent automatic adjustment of each target control parameter by controlling the opening of the corresponding valve group, thereby 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 adjustment system of the starting law test bench of the present invention also has the above advantages.

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

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

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

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present 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 of mixing temperature, front cabin pressure and rear cabin pressure, and determining the valve group related to each target control parameter;

[0042] Step S2: adjusting 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 a valve group related to the front cabin pressure according to a 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 the present embodiment 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 decouples each target control parameter from the control of the relevant valves, 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, and the flight altitude, inlet temperature and Mach number are decoupled into three target control parameters of mixing temperature, front cabin pressure and rear cabin pressure according to the principle of air supply and exhaust in the test cabin. The decoupling result of the environmental simulation parameters is:

[0047]

[0048] Where h is the potential height in meters, P es 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, and 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 regulation is decoupled, and the rear cabin pressure is controlled by adjusting the air supply. Thus, 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, and 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 rear cabin pressure adjustment is limited, the total air supply flow 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 adjusted up, the total air supply flow rate is increased; when the front cabin pressure or the rear cabin pressure cannot be adjusted down, 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 a 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 blending temperature (i.e., the inlet total temperature). Therefore, in the process of adjusting the blending 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 represents the hot gas supply temperature, T represents 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] In addition, in 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. The present invention takes into account that flow measurement is required when using flow ratio calculation feedforward control, and the measurement accuracy of variable temperature gas flow is low, so a hysteresis control method is also 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, a part of the airflow at the outlet of the mixer enters the test cabin through valve V113 for the engine to absorb and burn, and the other part is directly emptied into the exhaust pipeline through valve V114, merges with the air after the engine combustion in the exhaust pipeline, and is then extracted by the exhaust unit of the gas source station. Therefore, the greater the air flow entering the test cabin 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 the push-up 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 cabin meets the engine test requirements, and when the engine is in the pull-down state, valve V113 is gradually closed and valve V114 is opened. Therefore, the present invention sets valves V113 and V114 to be reversely interlocked, so that when valve V113 gradually opens, valve V114 gradually closes, and when valve V113 gradually closes, valve V114 gradually opens.

[0058] It can be understood that when the engine is conducting a power conversion test, it is generally required to accelerate from a slow state to a maximum take-off state, or decelerate from a maximum take-off state to a slow state within 0.5s. The engine intake flow rate changes greatly in a very short period of time. Therefore, valves V113 and V114 are required to have fast response and switching functions. The present invention uses electro-hydraulic valves that can act quickly. If the existing closed-loop control of the total inlet pressure of the engine is still used in control, that is, the total inlet pressure changes first, and then the valve acts, the response of the valve is difficult to meet the rapid changes in the instantaneous state of the engine. Optionally, when conducting a power conversion test, the present invention calculates the control advance of the valve group related to the front cabin pressure based on the following formula, and controls the valve group for adjustment based on the control advance:

[0059]

[0060] Where Q represents the adjustment ratio, W represents the intake flow corresponding to the throttle change angle from slow to maximum state of the engine, and W 慢车 ≤W≤W 最大 , W 慢车 Indicates the intake flow rate corresponding to the throttle lever angle at slow speed, W 最大 Indicates the intake flow rate corresponding to the throttle lever angle at maximum takeoff state, W 总 Represents the total air flow. By adopting the advance control method and using the ratio of the intake flow corresponding to the throttle angle from slow to maximum engine state to the total air flow as the adjustment ratio, the valve opening can be adjusted quickly and accurately, thereby achieving fast and accurate adjustment of the front cabin pressure.

[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 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, and 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, and the smaller the corresponding exhaust pressure, the larger the air supply mass flow rate, the larger the air density, and the larger 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 as described above, the system comprising:

[0064] An 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, used for regulating 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, used for controlling a valve group related to the front cabin pressure according to a state change of the engine, so as 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 rate of external atmospheric air supplement entering the air extraction pipeline.

[0068] It can be understood that the environmental simulation adjustment system of the starting law test bench of the present embodiment 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 a decoupling analysis on the control of each target control parameter and the related valves, 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 executes 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 law test bench, wherein the computer program executes the steps of the method described above when running on a computer.

[0071] The general form of computer readable storage media includes: floppy disk, flexible disk, hard disk, magnetic tape, any other magnetic medium, CD-ROM, any other optical medium, 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. The instructions can further be transmitted or received by a transmission medium. The term transmission medium can 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 the communication of the above instructions. Transmission media include coaxial cables, copper wires and optical fibers, which include 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 present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present 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 embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal 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 generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. 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 capable of directing a computer or other programmable data processing device to operate 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 A 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 operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions 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 other 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 falling within the scope of the present application.

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

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An environmental simulation adjustment method for 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.

2. The environmental simulation adjustment method for the starting law test bench according to claim 1, characterized in that: The decoupling results of the environmental simulation parameters are: Where h represents the potential height, P es Represents 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, and T mix Indicates the mixing temperature.

3. 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 represents the hot gas supply temperature, T represents the target temperature, W 总 Indicates the total gas supply flow.

4. The environmental simulation adjustment method for the starting law test bench according to claim 3, characterized in that: In 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.

5. The environmental simulation adjustment method for the starting law test bench according to claim 1, characterized in that: When conducting 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: Where 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.

6. 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.

7. 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. The coarse and fine adjustments of the rear cabin pressure can be achieved by controlling the opening of the two valves.

8. An environmental simulation and adjustment system for a starting law test bench, characterized in that: include: An 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, used for regulating 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, used for controlling a valve group related to the front cabin pressure according to a state change of the engine, so as to regulate the front cabin pressure; The rear cabin pressure regulating module is used to regulate the rear cabin pressure by adjusting the flow rate of external atmospheric air supplement entering the air extraction pipeline.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a computer program, and the processor executes the steps of the method according to any one of claims 1 to 7 by calling the computer program stored in the memory.

10. 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 7 are executed.

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