Aviation generator controller equivalent closed-loop test platform and test method

Abstract

The invention provides an aircraft generator controller equivalent closed-loop test platform and test method, and belongs to the field of generator controller test, and the platform comprises an upper computer which is used for generating a generator equivalent model and deploying the generator equivalent model on a lower computer for operation; the lower computer comprises a controller and a multifunctional data board card, the controller is used for operating the generator equivalent model, and the multifunctional data board card is used for obtaining the excitation voltage output by the generator controller and outputting the voltage of the voltage regulating point to the generator controller; the signal conditioning equipment comprises a voltage sensor and a power amplifier, the voltage sensor is used for processing the excitation voltage output by the generator controller, and the power amplifier is used for amplifying the voltage of the voltage regulating point output by the multifunctional data board card; the external power supply comprises a direct-current power supply and a three-phase alternating-current power supply, the direct-current power supply is used for externally supplying power to the generator controller, and the three-phase alternating-current power supply is used for simulating three-phase voltage of the permanent magnet generator.

Description

Technical Field

[0001] The present application belongs to the technical field of motor controller simulation test, and in particular, relates to an equivalent closed-loop test platform and test method for an aircraft generator controller. Background Art

[0002] The closed-loop test of the aircraft generator controller unit (GCU) is a key step in verifying the performance of the controller and the effectiveness of the generator control strategy. It aims to test the control algorithm, hardware performance and matching degree of the GCU with the actual motor to ensure that the generator can operate stably and efficiently under different operating conditions.

[0003] The test products (such as generators) in the existing GCU closed-loop test need to rely on traction equipment and cooling equipment to complete the corresponding closed-loop test items. In addition, during the test, there are often problems such as queuing for the test bench due to shortage of test resources, abnormal operation of test resources, and damage to the test products, which not only affects the overall efficiency and progress of the test, but also increases the test cost. Summary of the invention

[0004] The purpose of the present application is to provide an equivalent closed-loop test platform and test method for an aircraft generator controller to solve or alleviate at least one problem in the background technology.

[0005] On the one hand, the technical solution of the present application is: an equivalent closed-loop test platform for an aircraft generator controller, comprising:

[0006] A host computer, the host computer is used to generate a generator equivalent model and deploy the generator equivalent model on a lower computer for operation, and is used to monitor the operation of the generator equivalent model in the lower computer;

[0007] A lower computer, the lower computer includes a controller and a multifunctional data board, the controller is used to run the generator equivalent model, and the multifunctional data board is used to obtain the excitation voltage output by the generator controller and the output voltage regulation point voltage to the generator controller;

[0008] A signal conditioning device, the signal conditioning device comprising a voltage sensor and a power amplifier, the voltage sensor being used to process the excitation voltage output by the generator controller so that it meets the input requirements of the multi-function data board, and the power amplifier being used to amplify the voltage regulation point voltage output by the multi-function data board so that it meets the input requirements of the generator controller;

[0009] An external power supply includes a DC power supply and a three-phase AC power supply. The DC power supply is used to provide external power to the generator controller, and the three-phase AC power supply is used to simulate the three-phase voltage of the permanent magnet machine to enable the generator to operate normally.

[0010] Preferably, the upper computer communicates with the lower computer via Ethernet.

[0011] Preferably, the multifunctional data board includes an AD module and a DA module. The excitation voltage output by the generator controller is processed by a voltage sensor and then sent to the AD model. The voltage regulation point voltage output by the multifunctional data board is processed by a DA module and then by a power amplifier and then sent to the generator controller.

[0012] In addition, the present application also provides a method for performing an equivalent closed-loop test of an aircraft generator controller based on any of the above-mentioned equivalent closed-loop test platforms for an aircraft generator controller, comprising:

[0013] S10, constructing a generator equivalent model, performing function and performance verification on the generator equivalent model, and obtaining a verified generator equivalent model.

[0014] S20, determining the simulation step length of the generator equivalent model according to the real-time simulation hardware performance of the lower computer used, compiling the generator equivalent model into code, and generating a corresponding generator equivalent model DLL dynamic link library file;

[0015] S30, setting the same signal output frequency according to the simulation step of the generator equivalent model in the host computer, importing the DLL dynamic link library file of the generator equivalent model into the slave computer, and associating the hardware I / O interface of the slave computer with the excitation voltage input of the generator equivalent model and the voltage regulating point voltage output by the generator equivalent model, and realizing the monitoring of the voltage regulating point voltage and the excitation voltage waveform of the generator equivalent model through the host computer monitoring window;

[0016] S40, according to the known generator controller test outline, in accordance with the specific indicators of the generator controller loop voltage regulation function and performance test, by changing the operating conditions in the generator equivalent model, the closed-loop voltage regulation capability of the generator controller under different conditions is tested to complete the equivalent closed-loop test of the aircraft generator controller.

[0017] Preferably, the step S10 specifically includes:

[0018] S11, according to the known generator controller and the matching generator working principle, build a generator equivalent model and a GCU equivalent model in the host computer to form a GCU equivalent closed-loop control model;

[0019] S12, by adjusting the parameter values ​​in the GCU equivalent closed-loop control model to change the actual speed of the generator, adjusting the parameter values ​​in the generator equivalent model to change the load condition of the generator, and realizing the switching of different working conditions;

[0020] S13, according to the known generator controller test outline, in accordance with the indicators of the generator controller closed-loop voltage regulation function and performance test, the function and performance verification based on the generator equivalent model and the GCU equivalent closed-loop control model are carried out under different working conditions. When the indicators are met, a verified generator equivalent model is obtained.

[0021] Preferably, under different working conditions, the simulation results of the generator equivalent model and the GCU equivalent closed-loop control model can stably regulate the voltage and meet the voltage regulation requirements of the known generator controller, that is, a satisfied generator equivalent model is obtained.

[0022] Preferably, the generator equivalent model simplifies the permanent magnet machine and replaces it with a power module.

[0023] Preferably, under the working conditions required by the known generator controller, the generator controller can achieve closed-loop stable voltage regulation for the generator equivalent model, and the test results meet the test standards of the known generator controller and the test outline requirements of the known generator controller.

[0024] This application uses the excitation pressure difference signal output by the GCU to dynamically adjust the generator regulation point voltage, realizing the GCU closed-loop voltage regulation process, so that the GCU can not only respond quickly according to changes in the generator operating conditions, but also accurately control the regulation point voltage, with high reliability and easier maintenance and upgrading. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

[0026] Figure 1 This is a schematic diagram of the aircraft generator equivalent closed-loop test platform of this application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application.

[0028] In order to solve the problems encountered in the GCU closed-loop simulation in the prior art, the present application proposes an aircraft generator controller equivalent closed-loop test platform and method based on hardware in the loop (HIL) testing technology. By building a semi-physical simulation test platform, the real generator and supporting test resources are replaced to carry out the GCU equivalent closed-loop test, thereby replacing the traction equipment and cooling equipment required in the existing GCU closed-loop test, greatly liberating test resources, reducing test costs, and improving the efficiency of the GCU closed-loop test and the safety of the test products.

[0029] HIL testing technology builds a virtual control system model in the computer, connects it with the real controller hardware, and relies on real-time data interaction to test and verify the controller under various working conditions. This application relies on HIL testing technology to build a semi-physical simulation test platform for GCU equivalent closed-loop testing based on NI_VeriStand. By establishing an equivalent model of the generator and cooperating with the GCU for closed-loop testing, the GCU closed-loop debugging is achieved without relying on the test drag equipment, cooling equipment and generator prototype, reducing test resources, improving test debugging efficiency and reducing test costs.

[0030] like Figure 1 As shown, the aircraft generator controller equivalent closed-loop test platform provided by this application includes:

[0031] A host computer, which runs the NI_VeriStand software environment, and the NI_VeriStand software environment deploys the generator equivalent model to the controller of the lower computer through Ethernet in the form of a DLL dynamic link. The host computer is used to drive the generator model deployed in the controller of the lower computer to run, and perform task monitoring and interface display on the running status of the generator equivalent model in the lower computer, and monitor and display the voltage regulation point output by the generator equivalent model and the excitation pressure difference waveform collected by the multi-function data board;

[0032] A lower computer, which runs an RT system, includes a controller and a multifunctional data board, and the controller and the multifunctional data board communicate with each other through a PCIe protocol, wherein the controller is used to run a generator equivalent model to simulate the generator, and the multifunctional data board includes an AD module and a DA module, wherein the AD module is used to transmit the excitation positive and negative pressure difference signals with a certain duty cycle modulated by the GCU to the generator equivalent model after conditioning by a voltage sensor, and the DA module is used to output the voltage regulation point voltage generated by the generator equivalent model to the GCU after passing through a power amplifier, thereby realizing equivalent closed-loop voltage regulation of the GCU;

[0033] A signal conditioning device, the signal conditioning device includes a voltage sensor and a power amplifier, the voltage sensor is used to attenuate the excitation voltage output by the GCU to meet the input requirements of the AD module in the multi-function data board, and the power amplifier is used to amplify the voltage at the voltage regulation point output by the DA module in the multi-function data board to meet the input requirements of the GCU;

[0034] External power supply, the external power supply includes 28V DC power supply and three-phase AC power supply. The 28V DC power supply is used to provide external power to the GCU, and the three-phase AC power supply is used to simulate the three-phase voltage of the permanent magnet machine (PMG) to enable the GCU to operate normally.

[0035] After GCU modulates the excitation positive and negative pressure difference signals with a certain duty cycle, they are finally transmitted to the generator equivalent model of the controller for calculation through the voltage sensor of the signal conditioning equipment and the AD module of the multi-function data board. At the same time, the generator equivalent model responds to the voltage regulation point voltage, which is output to the voltage regulation point voltage signal to GUC after passing through the DA module of the functional data board and the power amplifier of the signal conditioning equipment, thereby realizing the equivalent closed-loop voltage regulation of GCU.

[0036] The aviation generator equivalent closed-loop test platform provided in the present application can replace the real generator and supporting test resources to carry out GCU closed-loop tests by building a semi-physical simulation test environment, thereby overcoming the constraints of the existing GCU equivalent closed-loop test on the accuracy of the simulation model, the acquisition, conversion, processing, output of the input and output analog signals of the GCU and the generator, the real-time nature of the signal transmission, and the fidelity of the fault injection, thereby realizing the GCU equivalent closed-loop test.

[0037] Based on this technology, the present application also provides a method for performing a GCU equivalent closed-loop test based on the above-mentioned aircraft generator controller equivalent closed-loop test platform, the method comprising:

[0038] S10, constructing a generator equivalent model, and verifying the function and performance of the generator equivalent model to ensure the accuracy of the generator equivalent model.

[0039] Firstly, according to the working principle of a certain type of high-voltage DC generator controller and the matching high-voltage DC generator, the generator equivalent model and the GCU equivalent model are built in the Matlab software of the host computer to form a GCU equivalent closed-loop control model;

[0040] Afterwards, the actual speed of the generator is changed by adjusting the RPM parameter value in the GCU equivalent closed-loop control model, and the load condition of the generator is changed by adjusting the Rs parameter value in the generator equivalent model to achieve switching between different working conditions.

[0041] Finally, according to the "Test Outline for a Certain Type of High-Voltage DC Generator Controller" and the specific indicators of the GCU closed-loop voltage regulation function and performance test, the function and performance verification based on the generator equivalent model and the GCU equivalent closed-loop control model were carried out under different working conditions to obtain a usable generator equivalent model to ensure the accuracy of the generator equivalent model.

[0042] Among them, under different working conditions, the simulation results of the generator equivalent model and the GCU equivalent closed-loop control model can stably regulate the voltage and meet the voltage regulation requirements of the high-voltage DC generator controller, that is, a satisfied generator equivalent model is obtained.

[0043] In some embodiments of the present application, the generator equivalent model can simplify the permanent magnet machine and replace it with a power module.

[0044] S20, in Matlab software, the simulation step length T of the generator equivalent model is set according to the real-time simulation hardware performance of the lower computer used, wherein the shorter the step length, the better the real-time performance; the generator equivalent model is compiled into code to generate the corresponding generator equivalent model DLL dynamic link library file.

[0045] S30, in the NI_VeriStand software environment of the host computer, the same signal output frequency f is set according to the simulation step size of the generator equivalent model, which satisfies Import the DLL dynamic link library file of the generator equivalent model into the lower computer, and associate the hardware I / O interface of the lower computer with the excitation voltage input of the generator equivalent model and the voltage regulation point voltage output by the generator equivalent model. Build a monitoring window through the editable display control of the upper computer to monitor the voltage regulation point voltage and excitation voltage waveform of the generator equivalent model.

[0046] S40, according to the "Test Outline for a Certain Type of High-Voltage DC Generator Controller", in accordance with the specific indicators of the GCU closed-loop voltage regulation function and performance test, by changing the operating conditions in the generator equivalent model, the closed-loop voltage regulation capability of the GCU under different conditions is tested.

[0047] The specific indicators are: under the working conditions required by a certain type of high-voltage DC generator controller, the GCU can achieve closed-loop stable voltage regulation for the generator equivalent model, and the test results meet the test standards of a certain type of high-voltage DC generator controller and the requirements of the "Test Outline for a Certain Type of High-Voltage DC Generator Controller".

[0048] The aviation generator controller equivalent closed-loop test platform and method provided in this application are the first to propose a GCU equivalent closed-loop test in the aviation field to verify the performance of the generator controller and the effectiveness of the motor control strategy. It replaces the physical generator with a semi-physical simulation, reduces test resources, greatly improves test efficiency, speeds up the overall progress of the test, and fills the gap in the GCU equivalent closed-loop test in the aviation field.

[0049] This application uses the excitation pressure difference signal output by the GCU to dynamically adjust the generator regulation point voltage, realizing the GCU closed-loop voltage regulation process, so that the GCU can not only respond quickly according to changes in the generator operating conditions, but also accurately control the regulation point voltage, with high reliability and easier maintenance and upgrading.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An equivalent closed-loop test platform for aircraft generator controllers, characterized in that: include: A host computer, the host computer is used to generate a generator equivalent model and deploy the generator equivalent model on a lower computer for operation, and is used to monitor the operation of the generator equivalent model in the lower computer; A lower computer, the lower computer includes a controller and a multifunctional data board, the controller is used to run the generator equivalent model, and the multifunctional data board is used to obtain the excitation voltage output by the generator controller and the output voltage regulation point voltage to the generator controller; A signal conditioning device, the signal conditioning device comprising a voltage sensor and a power amplifier, the voltage sensor being used to process the excitation voltage output by the generator controller so that it meets the input requirements of the multi-function data board, and the power amplifier being used to amplify the voltage regulation point voltage output by the multi-function data board so that it meets the input requirements of the generator controller; An external power supply includes a DC power supply and a three-phase AC power supply. The DC power supply is used to provide external power to the generator controller, and the three-phase AC power supply is used to simulate the three-phase voltage of the permanent magnet machine to enable the generator to operate normally.

2. The aircraft generator controller equivalent closed-loop test platform according to claim 1, characterized in that: The upper computer communicates with the lower computer via Ethernet.

3. The aircraft generator controller equivalent closed-loop test platform according to claim 1, characterized in that: The multifunctional data board includes an AD module and a DA module. The excitation voltage output by the generator controller is processed by a voltage sensor and then sent to the AD model. The voltage regulation point voltage output by the multifunctional data board is processed by a DA module and then by a power amplifier and then sent to the generator controller.

4. A method for performing an equivalent closed-loop test on an aircraft generator controller based on the aircraft generator controller equivalent closed-loop test platform as claimed in any one of claims 1 to 3, characterized in that: include: S10, constructing a generator equivalent model, performing function and performance verification on the generator equivalent model, and obtaining a verified generator equivalent model. S20, determining the simulation step length of the generator equivalent model according to the real-time simulation hardware performance of the lower computer used, compiling the generator equivalent model into code, and generating a corresponding generator equivalent model DLL dynamic link library file; S30, setting the same signal output frequency according to the simulation step of the generator equivalent model in the host computer, importing the DLL dynamic link library file of the generator equivalent model into the slave computer, and associating the hardware I / O interface of the slave computer with the excitation voltage input of the generator equivalent model and the voltage regulating point voltage output by the generator equivalent model, and realizing the monitoring of the voltage regulating point voltage and the excitation voltage waveform of the generator equivalent model through the host computer monitoring window; S40, according to the known generator controller test outline, in accordance with the specific indicators of the generator controller loop voltage regulation function and performance test, by changing the operating conditions in the generator equivalent model, the closed-loop voltage regulation capability of the generator controller under different conditions is tested to complete the equivalent closed-loop test of the aircraft generator controller.

5. The method according to claim 4, characterized in that The step S10 specifically includes: S11, according to the known generator controller and the matching generator working principle, build a generator equivalent model and a GCU equivalent model in the host computer to form a GCU equivalent closed-loop control model; S12, by adjusting the parameter values ​​in the GCU equivalent closed-loop control model to change the actual speed of the generator, adjusting the parameter values ​​in the generator equivalent model to change the load condition of the generator, and realizing the switching of different working conditions; S13, according to the known generator controller test outline, in accordance with the indicators of the generator controller closed-loop voltage regulation function and performance test, the function and performance verification based on the generator equivalent model and the GCU equivalent closed-loop control model are carried out under different working conditions. When the indicators are met, a verified generator equivalent model is obtained.

6. The method according to claim 5, characterized in that Under different working conditions, the simulation results of the generator equivalent model and the GCU equivalent closed-loop control model can stably regulate the voltage and meet the voltage regulation requirements of the known generator controller, that is, a satisfied generator equivalent model is obtained.

7. The method according to claim 5, characterized in that The generator equivalent model simplifies the permanent magnet machine and replaces it with a power module.

8. The method according to claim 4, characterized in that Under the working conditions required by the known generator controller, the generator controller can achieve closed-loop stable voltage regulation for the generator equivalent model, and the test results meet the test standards of the known generator controller and the test outline requirements of the known generator controller.

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