Automatic following adjustment control method and system, device, and medium for rain absorption flow rate

Abstract

The present invention discloses an automatic following and adjusting control method, system, device and medium for rain ingestion flow rate. The automatic following and adjusting control method for rain ingestion flow rate can automatically give the target values of rain ingestion flow rate corresponding to different working states of a test engine during a rain ingestion test, and implement closed-loop control on the rain ingestion flow rate adjustment system according to the target values of rain ingestion flow rate, realizing that the rain ingestion flow rate automatically follows the state change of the test engine and quickly adjusts and responds during the rain ingestion test. The adjustment of the rain ingestion flow rate well matches the state change of the test engine, and has high control precision, and can meet the rain ingestion airworthiness verification requirements of different models of civil aviation engines.

Description

Technical Field

[0001] The present invention relates to the technical field of rain ingestion test for aero - engines, and particularly to an automatic following - adjustment control method and system for rain ingestion flow rate, an electronic device, and a computer - readable storage medium. Background Art

[0002] In order to ensure that the engine can operate reliably in rainy days without adverse effects on the engine's operation, the Civil Aviation Administration of China's airworthiness regulations "Airworthiness Requirements for Aero - engines" (CCAR - 33 - R2) clearly stipulate the airworthiness requirements for rain ingestion of aero - engines. Article 33.78(b) thereof details the rain ingestion flow rate for rotorcraft engines: the total weight ratio of the inhaled water droplet flow rate to the air flow rate is at least 4%. Therefore, rain ingestion tests are required to meet the rain ingestion airworthiness verification requirements of aero - engines. During the rain ingestion test, the rain ingestion flow rate needs to change in response to the state change of the test engine. Currently, the adjustment and control of the rain ingestion flow rate are based on the working state of the test engine manually, resulting in problems such as poor adjustment follow - up and low control accuracy. Summary of the Invention

[0003] The present invention provides an automatic following - adjustment control method and system for rain ingestion flow rate, an electronic device, and a computer - readable storage medium to solve the technical problems of poor adjustment follow - up and low control accuracy existing in the manual adjustment and control of the rain ingestion flow rate based on the working state of the test engine in the existing rain ingestion test.

[0004] According to one aspect of the present invention, an automatic following - adjustment control method for rain ingestion flow rate is provided, including the following steps:

[0005] Obtain the functional relationship between the gas generator speed and the rain ingestion flow rate of the test engine under different working states;

[0006] Judge the current working state of the test engine during the rain ingestion test, and select the corresponding functional relationship between the gas generator speed and the rain ingestion flow rate according to the current working state;

[0007] Obtain the real - time gas generator speed of the test engine in the current working state, and calculate the real - time set value of the rain ingestion flow rate by combining the selected functional relationship between the gas generator speed and the rain ingestion flow rate;

[0008] Based on the real - time set value, control the working state of the rain ingestion flow rate adjustment system to achieve automatic following - adjustment control of the rain ingestion flow rate.

[0009] Further, the process of obtaining the functional relationship between the gas generator speed and the rain ingestion flow rate of the test engine under different working states includes the following steps:

[0010] Before the rain ingestion test, operate the engine state change lever at a state lower than the lowest state for rain ingestion verification, so that the test engine changes its state to a state higher than the highest state for rain ingestion verification in a stepped and stable manner. During this process, measure the gas generator speed value and the intake air flow value of the test engine in real time to obtain the steady-state function relationship between the gas generator speed and the intake air flow;

[0011] Operate the engine state change lever according to the operation time required for rain ingestion verification, so that the test engine quickly decelerates from the highest state to the lowest state. During the deceleration process, measure the gas generator speed value and the intake air flow value of the test engine in real time to obtain the deceleration state function relationship between the gas generator speed and the intake air flow;

[0012] Operate the engine state change lever according to the operation time required for rain ingestion verification, so that the test engine quickly accelerates from the lowest state to the highest state. During the acceleration process, measure the gas generator speed value and the intake air flow value of the test engine in real time to obtain the acceleration state function relationship between the gas generator speed and the intake air flow;

[0013] Based on the relationship between the rain ingestion flow and the intake air flow, convert the function relationship between the gas generator speed and the intake air flow into the function relationship between the gas generator speed and the rain ingestion flow.

[0014] Further, the steady-state function relationship between the gas generator speed and the rain ingestion flow is: W 雨 = 0.201548 * (n g / 45000) 2 - 0.049496 * n g / 45000 + 0.007916, the deceleration state function relationship is: W 雨 = 0.68236 * (n g / 45000) 2 - 0.86708 * n g / 45000 + 0.344676, the acceleration state function relationship is: W 雨 = 0.66916 * (n g / 45000) 2 - 0.77384 * n g / 45000 + 0.285884, where, n g represents the gas generator speed, and W 雨 represents the rain ingestion flow.

[0015] Further, the process of obtaining the function relationship between the gas generator speed and the rain ingestion flow of the test engine under different working states further includes the following content:

[0016] Determine the environmental factor correction coefficient according to the ambient atmospheric temperature and ambient atmospheric pressure measured in real time during the rain ingestion test, and introduce it into the functional relationship between the gas generator speed and the rain ingestion flow rate.

[0017] Furthermore, introduce a steady-state rain ingestion flow margin into the steady-state functional relationship between the gas generator speed and the rain ingestion flow rate, and introduce a dynamic rain ingestion flow margin into the deceleration-state functional relationship and the acceleration-state functional relationship between the gas generator speed and the rain ingestion flow rate.

[0018] Furthermore, the process of determining the current working state of the test engine during the rain ingestion test is specifically as follows:

[0019] During the rain ingestion test, collect the change angle of the engine state change lever. If the change angle ΔCLP of the engine state change lever is less than m° / Q or ΔCLP is greater than -m° / Q, it is determined that the test engine is in a stable state; if ΔCLP is less than -m° / Q, it is determined that the test engine is in a deceleration state; if ΔCLP is greater than m° / Q, it is determined that the test engine is in an acceleration state; where Q represents the data acquisition frequency, and m represents the change angle threshold of the engine state change lever during the time interval between two adjacent data acquisitions.

[0020] Furthermore, the process of controlling the working state of the rain ingestion flow regulation system based on the real-time set value to achieve the automatic following regulation control of the rain ingestion flow rate is specifically as follows:

[0021] Use the calculated real-time set value as the target value, use the actual value of the rain ingestion flow rate measured in real time by the flowmeter as the feedback value. After comparing the feedback value with the target value, calculate the real-time control quantity according to the PID control algorithm, and then control the working state of the rain ingestion flow regulation system through the PLC control system to achieve the real-time following regulation of the rain ingestion flow rate.

[0022] In addition, the present invention also provides an automatic following regulation control system for the rain ingestion flow rate, including:

[0023] A function relationship acquisition module, used to acquire the function relationship between the gas generator speed and the rain ingestion flow rate of the test engine in different working states;

[0024] A state judgment module, used to judge the current working state of the test engine during the rain ingestion test, and select the corresponding function relationship between the gas generator speed and the rain ingestion flow rate according to the current working state;

[0025] A calculation module, used to acquire the real-time speed of the gas generator of the test engine in the current working state, and calculate the real-time set value of the rain ingestion flow rate in combination with the corresponding selected function relationship between the gas generator speed and the rain ingestion flow rate;

[0026] A control module, configured to control the working state of the rain suction flow regulation system based on the real-time set value, so as to achieve automatic following regulation control of the rain suction flow.

[0027] In addition, the present invention further provides an electronic device, including a processor and a memory. A computer program is stored in the memory. The processor is configured to execute the steps of the method as described above by calling the computer program stored in the memory.

[0028] In addition, the present invention further provides a computer-readable storage medium, configured to store a computer program for automatically following regulation control of the rain suction flow. When the computer program runs on a computer, it executes the steps of the method as described above.

[0029] The present invention has the following effects:

[0030] The automatic following regulation control method for the rain suction flow of the present invention first obtains the functional relationship between the gas generator speed and the rain suction flow under different working states of the test engine before the rain suction test, then judges the current working state of the test engine during the test, selects the corresponding functional relationship between the gas generator speed and the rain suction flow according to the current working state, then obtains the real-time gas generator speed of the test engine under the current working state, and combines the selected functional relationship between the gas generator speed and the rain suction flow to calculate the real-time set value of the rain suction flow. Finally, based on the real-time set value, the working state of the rain suction flow regulation system is controlled to achieve automatic following regulation control of the rain suction flow. The automatic following regulation control method of the present invention can automatically give the corresponding rain suction flow target value for different working states of the test engine during the rain suction test, and implement closed-loop control on the rain suction flow regulation system according to the rain suction flow target value, realizing rapid adjustment and response of the rain suction flow automatically following the state change of the test engine during the rain suction test. The rain suction flow regulation well matches the state change of the test engine, and has high control accuracy, and can meet the rain suction airworthiness verification requirements of different models of civil aviation engines.

[0031] In addition, the automatic following regulation control system for the rain suction flow of the present invention also has the above advantages.

[0032] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the present invention in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0034] Figure 1 It is a schematic flow diagram of the automatic following and adjusting control method for the rain suction flow rate in the preferred embodiment of the present invention.

[0035] Figure 2 It is Figure 1 a sub - flow schematic diagram of step S1 in

[0036] Figure 3 It is Figure 1 another sub - flow schematic diagram of step S1 in

[0037] Figure 4 It is a schematic diagram of the module structure of the automatic following and adjusting control system for the rain suction flow rate in another embodiment of the present invention. Specific embodiments

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the following.

[0039] It can be understood that, as Figure 1 shown, the preferred embodiment of the present invention provides an automatic following and adjusting control method for the rain suction flow rate, including the following:

[0040] Step S1: Obtain the functional relationship between the gas generator speed and the rain suction flow rate under different working states of the test engine;

[0041] Step S2: Judge the current working state of the test engine during the rain suction test, and select the corresponding functional relationship between the gas generator speed and the rain suction flow rate according to the current working state;

[0042] Step S3: Obtain the real - time speed of the gas generator of the test engine in the current working state, and calculate the real - time set value of the rain suction flow rate in combination with the selected functional relationship between the gas generator speed and the rain suction flow rate;

[0043] Step S4: Control the working state of the rain suction flow rate adjustment system based on the real - time set value to realize the automatic following and adjusting control of the rain suction flow rate.

[0044] It can be understood that for the automatic following and regulating control method of the rain suction flow rate in this embodiment, before the rain suction test, the functional relationship between the gas generator speed and the rain suction flow rate of the test engine under different working conditions is obtained first. Then, during the test, the current working condition of the test engine is judged, and the corresponding functional relationship between the gas generator speed and the rain suction flow rate is selected according to the current working condition. Next, the real-time speed of the gas generator of the test engine under the current working condition is obtained, and the real-time set value of the rain suction flow rate is calculated by combining the selected functional relationship between the gas generator speed and the rain suction flow rate. Finally, based on this real-time set value, the working state of the rain suction flow rate regulating system is controlled to achieve the automatic following and regulating control of the rain suction flow rate. The automatic following and regulating control method of the present invention can automatically give the target value of the rain suction flow rate corresponding to different working conditions of the test engine during the rain suction test, and realize the closed-loop control of the rain suction flow rate regulating system according to the target value of the rain suction flow rate. It realizes the rapid adjustment and response of the rain suction flow rate automatically following the state change of the test engine during the rain suction test. The rain suction flow rate adjustment well matches the state change of the test engine, and has high control accuracy, and can meet the rain suction airworthiness verification requirements of different models of civil aviation engines.

[0045] It can be understood that in step S1, since the rain will affect the effectiveness of the real-time measurement of the engine intake air flow rate during the rain suction process, in order to make the rain suction flow rate match the state change of the test engine, the test engine is calibrated before the rain suction test to obtain the functional relationship between the gas generator speed and the rain suction flow rate of the test engine under different working conditions. Among them, as Figure 2 shown, the process of obtaining the functional relationship between the gas generator speed and the rain suction flow rate of the test engine under different working conditions includes the following contents:

[0046] Step S11: Before the rain suction test, operate the engine state change lever at a speed lower than the lowest state of the rain suction verification, so that the test engine changes its state to a state higher than the highest state of the rain suction verification in a stepped and stable manner. During this process, the gas generator speed value and the intake air flow rate value of the test engine are measured in real time to obtain the steady-state functional relationship between the gas generator speed and the intake air flow rate;

[0047] Step S12: Operate the engine state change lever according to the operation time required for the rain suction verification, so that the test engine quickly decelerates from the highest state to the lowest state. During the deceleration process, the gas generator speed value and the intake air flow rate value of the test engine are measured in real time to obtain the deceleration-state functional relationship between the gas generator speed and the intake air flow rate;

[0048] Step S13: Operate the engine state transformation lever according to the operation time required for rain ingestion verification, so that the test engine quickly accelerates from the lowest state to the highest state. During the acceleration process, the rotational speed value of the gas generator of the test engine and the intake air flow value are measured in real time, and the acceleration-state function relationship between the rotational speed of the gas generator and the intake air flow is obtained;

[0049] Step S14: Based on the relationship between the rain ingestion flow rate and the intake air flow rate, convert the function relationship between the rotational speed of the gas generator and the intake air flow rate into the function relationship between the rotational speed of the gas generator and the rain ingestion flow rate.

[0050] Specifically, before conducting the rain ingestion test, calibration work is carried out on the test engine. During the calibration process, the operating states of the test engine cover all the states verified in the rain ingestion test, such as including the lowest state, the highest state, the rapid deceleration process, and the rapid acceleration process. During the calibration process, the rotational speed n of the gas generator of the engine is measured in real time g , the intake air flow rate W a and the angle of the engine state transformation lever CLP. For example, first operate the engine state transformation lever CLP at a state lower than the lowest state verified for rain ingestion, so that the test engine changes its state to a state higher than the highest state verified for rain ingestion in a stepped and stable manner. During this process, the rotational speed value n of the gas generator of the test engine g and the intake air flow rate value W a are measured in real time, and the steady-state function relationship between the rotational speed n of the gas generator g and the intake air flow rate W a can be fitted. Then, operate the engine state transformation lever according to the operation time required for rain ingestion verification, so that the test engine quickly decelerates from the highest state to the lowest state. During the deceleration process, the rotational speed value n of the gas generator of the test engine g and the intake air flow rate value are measured in real time, and the deceleration-state function relationship between the rotational speed n of the gas generator g and the intake air flow rate W a can be fitted. Then, operate the engine state transformation lever according to the operation time required for rain ingestion verification, so that the test engine quickly accelerates from the lowest state to the highest state. During the acceleration process, the rotational speed value n of the gas generator of the test engine g and the intake air flow rate value W a are measured in real time, and the acceleration-state function relationship between the rotational speed n of the gas generator g and the intake air flow rate W a can be fitted. And there is a proportional relationship between the intake air flow rate W a and the rain ingestion flow rate W 雨 , W 雨 =4%W a , so that the function relationship between the rotational speed n of the gas generator g and the rain ingestion flow rate W 雨The steady-state function relationship between them is: W 雨 = 0.201548 * (n g / 45000) 2 - 0.049496 * n g / 45000 + 0.007916. The deceleration state function relationship is: W 雨 = 0.68236 * (n g / 45000) 2 - 0.86708 * n g / 45000 + 0.344676. The acceleration state function relationship is: W 雨 = 0.66916 * (n g / 45000) 2 - 0.77384 * n g / 45000 + 0.285884.

[0051] It can be understood that the execution order of steps S11, S12, and S13 can be adjusted. For example, steps S11, S12, and S13 can be performed simultaneously.

[0052] It can be understood that by measuring the intake air flow value corresponding to the gas generator speed in real time during the calibration of the test engine, the function relationship between the gas generator speed and the intake air flow can be obtained. Since there is a proportional relationship between the rain suction flow and the intake air flow, the function relationship between the gas generator speed and the rain suction flow can be obtained through conversion, so as to facilitate the subsequent automatic following adjustment control of the rain suction flow.

[0053] Optionally, as Figure 3 shown, the process of obtaining the function relationship between the gas generator speed and the rain suction flow of the test engine under different working conditions further includes the following content:

[0054] Step S15: Determine the environmental factor correction coefficient according to the ambient atmospheric temperature and ambient atmospheric pressure measured in real time during the rain suction test, and introduce it into the function relationship between the gas generator speed and the rain suction flow.

[0055] It can be understood that by introducing the environmental factor correction coefficient k1 into the function relationship, the influence of environmental factors during the rain suction test is considered, and the control accuracy is further improved. Among them, the specific value of k1 is an empirical value and can be determined according to the actually measured ambient atmospheric temperature and ambient atmospheric pressure.

[0056] In addition, a steady-state rain ingestion flow margin k2 is introduced into the steady-state function relationship between the gas generator speed and the rain ingestion flow rate, and a dynamic rain ingestion flow margin k3 is introduced into the deceleration-state function relationship and the acceleration-state function relationship between the gas generator speed and the rain ingestion flow rate. Generally, the steady-state rain ingestion flow margin k2 is set to 0.1%, and the dynamic rain ingestion flow margin k3 is set to 0.3%.

[0057] It can be understood that in the step S2, the process of determining the current working state of the test engine during the rain ingestion test is specifically as follows:

[0058] During the rain ingestion test, collect the change angle of the engine state change lever. If the change angle ΔCLP of the engine state change lever < m° / Q or ΔCLP is greater than -m° / Q, it is determined that the test engine is in a stable state; if ΔCLP < -m° / Q, it is determined that the test engine is in a deceleration state; if ΔCLP > m° / Q, it is determined that the test engine is in an acceleration state; where Q represents the data acquisition frequency, with the unit of ms, and m represents the change angle threshold of the engine state change lever in the time interval between two adjacent data acquisitions, which can be set according to different engine models.

[0059] It can be understood that by collecting the change angle ΔCLP of the engine state change lever during the rain ingestion test, when ΔCLP < m° / Q or ΔCLP is greater than -m° / Q, it is determined that the test engine is in a stable state, and then the steady-state function relationship between the gas generator speed n g and the intake air flow rate W 雨 is selected; when ΔCLP < -m° / Q, it is determined that the test engine is in a deceleration state, and then the deceleration-state function relationship between the gas generator speed n g and the intake air flow rate W 雨 is selected; when ΔCLP > m° / Q, it is determined that the test engine is in an acceleration state, and then the acceleration-state function relationship between the gas generator speed n g and the intake air flow rate W 雨 is selected.

[0060] It can be understood that in the step S3, after selecting the corresponding function relationship based on the current working state of the test engine, measure the real-time speed of the gas generator of the test engine, and then the real-time set value of the rain ingestion flow rate can be calculated based on the function relationship between the gas generator speed and the rain ingestion flow rate, so that the set value of the rain ingestion flow rate can be automatically calculated based on the state of the test engine.

[0061] It can be understood that in the step S4, a PID control algorithm is specifically adopted to control the working state of the rain suction flow rate regulation system. For example, taking the calculated real-time set value as the target value and the actual value of the rain suction flow rate measured by the flow meter in real time as the feedback value, after comparing the feedback value with the target value, the real-time control quantity is calculated according to the PID control algorithm, and then the working state of the rain suction flow rate regulation system is controlled through the PLC control system to realize the real-time following regulation of the rain suction flow rate, which can well match the state change of the engine and has a high control accuracy.

[0062] It can be understood that debugging is also required before the formal rain suction test. The debugging is divided into simulation debugging with the engine not running and joint debugging with the engine running. During the simulation debugging, the simulated gas generator speed signal of the engine is used as the feedback value, and during the joint debugging with the engine, the real-time speed of the gas generator of the engine is used as the feedback value. Then, according to the selected function correspondence, the test target value of the rain suction flow rate is automatically given.

[0063] It can be understood that in order to prevent possible emergencies during the test, such as excessive deviation of the flow rate and abnormal operation of the engine, the system has the function of manual adjustment and intervention to improve safety and applicability. Among them, the manual adjustment and intervention are operated through the on-site control panel or the industrial control computer.

[0064] It can be understood that the inventor of the present application also applied the automatic following regulation control method of this embodiment to a certain civil turboshaft engine for the whole-machine rain suction airworthiness scientific research test. The maximum rainfall regulation time is less than 5 s, meeting the airworthiness assessment requirements. Moreover, during the entire rain suction process, the total weight ratio of the water droplet flow rate to the air flow rate in the stable state is stable at 4.1% - 4.19% (the set steady-state flow margin is 0.1%), with high control stability and accuracy. During the transient state (acceleration state or deceleration state), the total weight ratio of the water droplet flow rate to the air flow rate is 4.1 - 4.5% (the set dynamic flow margin is 0.3%), which matches the engine state change, and the test results meet the airworthiness requirements.

[0065] In addition, as Figure 4 shown, another embodiment of the present invention also provides an automatic following regulation control system for the rain suction flow rate, preferably adopting the automatic following regulation control method as described above. The system includes:

[0066] A function relationship acquisition module, which is used to acquire the function relationship between the gas generator speed and the rain suction flow rate of the test engine under different working states;

[0067] A state judgment module, which is used to judge the current working state of the test engine during the rain suction test and select the corresponding function relationship between the gas generator speed and the rain suction flow rate according to the current working state;

[0068] A calculation module, configured to obtain the real-time rotational speed of the gas generator of the test engine in the current working state, and calculate the real-time set value of the rain ingestion flow rate by combining the function relationship between the selected gas generator rotational speed and the rain ingestion flow rate.

[0069] A control module, configured to control the working state of the rain ingestion flow rate regulation system based on the real-time set value, so as to achieve automatic following regulation control of the rain ingestion flow rate.

[0070] It can be understood that for the automatic following regulation control system of the rain ingestion flow rate in this embodiment, before the rain ingestion test, the function relationship between the gas generator rotational speed and the rain ingestion flow rate of the test engine in different working states is obtained first. Then, during the test, the current working state of the test engine is judged, and the function relationship between the corresponding gas generator rotational speed and the rain ingestion flow rate is selected according to the current working state. Next, the real-time rotational speed of the gas generator of the test engine in the current working state is obtained, and the real-time set value of the rain ingestion flow rate is calculated by combining the selected function relationship between the gas generator rotational speed and the rain ingestion flow rate. Finally, the working state of the rain ingestion flow rate regulation system is controlled based on the real-time set value, so as to achieve automatic following regulation control of the rain ingestion flow rate. The automatic following regulation control system of the present invention can automatically give the target value of the rain ingestion flow rate corresponding to different working states of the test engine during the rain ingestion test, and implement closed-loop control on the rain ingestion flow rate regulation system according to the target value of the rain ingestion flow rate. It realizes the rapid adjustment response of the rain ingestion flow rate automatically following the change of the state of the test engine during the rain ingestion test. The rain ingestion flow rate regulation well matches the change of the state of the test engine, and has high control precision, and can meet the rain ingestion airworthiness verification requirements of different types of civil aviation engines.

[0071] In addition, another embodiment of the present invention further provides an electronic device, including a processor and a memory. A computer program is stored in the memory, and the processor is configured to execute the steps of the method as described above by calling the computer program stored in the memory.

[0072] In addition, another embodiment of the present invention further provides a computer-readable storage medium, configured to store a computer program for automatically following regulation control of the rain ingestion flow rate. When the computer program runs on a computer, it executes the steps of the method as described above.

[0073] The forms of common computer-readable storage media include: floppy disks, flexible disks, hard disks, magnetic tapes, any other magnetic media, CD-ROMs, any other optical media, punch cards, paper tapes, any other physical media with a pattern of holes, random access memories (RAMs), programmable read-only memories (PROMs), erasable programmable read-only memories (EPROMs), flash erasable programmable read-only memories (FLASH-EPROMs), any other memory chips or cartridges, or any other media readable by a computer. 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.

[0074] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0075] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program code. The solutions in the embodiments of the present application can be implemented in various computer languages. For example, object-oriented programming languages such as Java and interpreted scripting languages such as JavaScript.

[0076] The present application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, so that the instructions executed by the processors of the computer or other programmable data processing devices generate for implementation in the process Figure 1One or more processes and / or blocks Figure 1 Apparatus for the functions specified in one or more blocks

[0077] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to work in a particular manner, such that the instructions stored in the computer-readable memory produce a manufacture including an instruction apparatus that implements the functions in the process Figure 1 One or more processes and / or blocks Figure 1 The functions specified in one or more blocks

[0078] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, such that a series of operational steps are executed on the computer or other programmable apparatus to produce a computer-implemented process, so that the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in the process Figure 1 One or more processes and / or blocks Figure 1 The steps of the functions specified in one or more blocks

[0079] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present application

[0080] 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 equivalent technologies, the present application is also intended to include these modifications and variations

Claims

1. An automatic following and adjusting control method for rain absorption flow rate, characterized in that, It includes the following contents: Obtain the functional relationship between the gas generator speed and the rain ingestion flow rate of the test engine under different operating conditions; Judge the current operating condition of the test engine during the rain ingestion test, and select the corresponding functional relationship between the gas generator speed and the rain ingestion flow rate according to the current operating condition; Obtain the real-time speed of the gas generator of the test engine under the current operating condition, and calculate the real-time set value of the rain ingestion flow rate in combination with the selected functional relationship between the gas generator speed and the rain ingestion flow rate; Based on this real-time set value, control the operating state of the rain ingestion flow rate adjustment system to achieve automatic follow-up adjustment control of the rain ingestion flow rate.

2. The automatic following adjustment control method for rain absorption flow rate according to claim 1, characterized in that The process of obtaining the functional relationship between the gas generator speed and the rain ingestion flow rate of the test engine under different operating conditions includes the following contents: Before the rain ingestion test, operate the engine state change lever at a speed lower than the lowest state for rain ingestion verification, so that the test engine changes its state to a state higher than the highest state for rain ingestion verification in a stepped and stable manner. During this process, measure the gas generator speed value and the intake air flow rate value of the test engine in real time to obtain the steady-state functional relationship between the gas generator speed and the intake air flow rate; Operate the engine state change lever for the operation time required for rain ingestion verification, so that the test engine quickly decelerates from the highest state to the lowest state. During the deceleration process, measure the gas generator speed value and the intake air flow rate value of the test engine in real time to obtain the deceleration-state functional relationship between the gas generator speed and the intake air flow rate; Operate the engine state change lever for the operation time required for rain ingestion verification, so that the test engine quickly accelerates from the lowest state to the highest state. During the acceleration process, measure the gas generator speed value and the intake air flow rate value of the test engine in real time to obtain the acceleration-state functional relationship between the gas generator speed and the intake air flow rate; Based on the relationship between the rain ingestion flow rate and the intake air flow rate, convert the functional relationship between the gas generator speed and the intake air flow rate into the functional relationship between the gas generator speed and the rain ingestion flow rate.

3. The automatic following adjustment control method for rain suction flow rate according to claim 2, wherein, The steady-state functional relationship between the gas generator speed and the rain intake flow rate is: W 雨 = 0.201548 * (n g / 45000) 2 - 0.049496 * n g / 45000 + 0.007916. The deceleration state functional relationship is: W 雨 = 0.68236 * (n g / 45000) 2 - 0.86708 * n g / 45000 + 0.344676. The acceleration state functional relationship is: W 雨 = 0.66916 * (n g / 45000) 2 - 0.77384 * n g / 45000 + 0.285884. Among them, n g represents the gas generator speed, and W 雨 represents the rain intake flow rate.

4. The automatic following adjustment control method for rain absorption flow rate according to claim 2, characterized in that The process of obtaining the functional relationship between the gas generator speed and the rain ingestion flow rate of the test engine under different operating conditions also includes the following contents: Determine the environmental factor correction coefficient according to the ambient atmospheric temperature and ambient atmospheric pressure measured in real time during the rain ingestion test, and introduce it into the functional relationship between the gas generator speed and the rain ingestion flow rate.

5. The automatic following adjustment control method for rain absorption flow rate according to claim 2, wherein, Introduce a steady-state rain ingestion flow rate margin into the steady-state functional relationship between the gas generator speed and the rain ingestion flow rate, and introduce a dynamic rain ingestion flow rate margin into the deceleration-state and acceleration-state functional relationships between the gas generator speed and the rain ingestion flow rate.

6. The automatic following adjustment control method for rain suction flow rate according to claim 1, characterized in that The process of judging the current operating condition of the test engine during the rain ingestion test is specifically as follows: During the rain absorption test, the changing angle of the engine state transformation operating lever is collected. If the changing angle of the engine state transformation operating lever ΔCLP < m° / Q or ΔCLP is greater than -m° / Q, it is determined that the test engine is in a stable state; if ΔCLP < -m° / Q, it is determined that the test engine is in a decelerating state; if ΔCLP > m° / Q, it is determined that the test engine is in an accelerating state; where Q represents the data acquisition frequency, and m represents the changing angle threshold of the engine state transformation operating lever in the time interval between two adjacent data acquisitions.

7. The automatic following adjustment control method for rain absorption flow rate according to claim 1, characterized in that, The process of controlling the working state of the rain absorption flow rate regulation system based on the real-time set value to achieve automatic following regulation control of the rain absorption flow rate is specifically as follows: Taking the calculated real-time set value as the target value and the actual value of the rain absorption flow rate measured by the flowmeter in real time as the feedback value, after comparing the feedback value with the target value, calculating the real-time control quantity according to the PID control algorithm, and then controlling the working state of the rain absorption flow rate regulation system through the PLC control system to achieve real-time following regulation of the rain absorption flow rate.

8. An automatic following and adjusting control system for rain absorption flow rate, characterized in that, It includes: A function relationship acquisition module, which is used to acquire the function relationship between the gas generator speed and the rain absorption flow rate of the test engine in different working states; A state judgment module, which is used to judge the current working state of the test engine during the rain absorption test and select the corresponding function relationship between the gas generator speed and the rain absorption flow rate according to the current working state; A calculation module, which is used to acquire the real-time speed of the gas generator of the test engine in the current working state and calculate the real-time set value of the rain absorption flow rate in combination with the selected function relationship between the gas generator speed and the rain absorption flow rate; A control module, which is used to control the working state of the rain absorption flow rate regulation system based on the real-time set value to achieve automatic following regulation control of the rain absorption flow rate.

9. An electronic device, characterized in that, It includes a processor and a memory. A computer program is stored in the memory. The processor is used to execute 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 automatically following and adjusting the control of rain absorption flow rate, characterized in that, When the computer program runs on a computer, it executes the steps of the method according to any one of claims 1 to 7.

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