RU2755027C1 - Method for development and testing of automatic control system and mobile stand for testing electronic control system - Google Patents

Abstract

FIELD: instrumentation.

SUBSTANCE: inventions group relates to instrumentation and can be used for design, testing and diagnostics of automatic regulation and control units for automatic control systems of complex technical objects, for example, gas turbine engines. A mobile stand for testing automatic control and monitoring units for a complex technical object contains an electronic regulator, simulators of executive mechanisms with digital modules, a software and hardware simulator of a complex technical object with a mathematical model, sensor simulators, a block for simulating breaks and short circuits of communication lines with the provision of work in real time, while the stand is made in the constructive host computer with a module for connecting the interface part, which performs the functions of a supervisor of all processes, includes a unit with special software that generates and launches software tests, an information and diagnostic complex (IDC) that stores and visualizes data on the automatic control system response complex technical object for test influences, and the interface part in the form of a block of heterogeneous modules based on DSP microcontrollers, VLIW microcontrollers, programmable systems on a chip - SoC and programmable logic integrated circuits - PLIC.

EFFECT: improving the manufacturability of the design and testing processes of automatic regulation and control units, as well as improving the quality and reliability of the automatic control system by searching, identifying defects and preventing errors in the operation of the automatic control system.

2 cl, 1 dwg

Description

The invention relates to instrumentation and can be used for design, testing and diagnostics of automatic regulation and control units for automatic control systems of complex technical objects, for example, gas turbine engines.

There is a known method (RU # 2265236) for diagnosing complex electronic devices, which consists in the fact that for each set of input test signals, pre-corresponding response signals are generated for intermediate points of the controlled device. The received response signals at the outputs of the product are compared with the parameters of the reference response signals and determine the degree of their correspondence; when discrepancies are detected, the faulty branch of the functional circuit is determined and the condition diagnostics is repeated by enumerating all the generated combinations of input signals, after which they proceed to diagnosing the fault locations. The specified method is intended for testing devices in order to identify malfunctions and cannot be used to diagnose the designed devices.

Known (RU # 2300795) is a device and method for controlling the control program of a calculator, which consists in the fact that the vector of control actions generated by the modified program is fed to the information model of the control object, which, as its initial states, presents to the modified control program the state vectors taken from the base test cases, characterized in that they continue to control the object with an unmodified program, protect the control object from the impact of possible program errors through the use of the information model of the control object, implemented in the form of an artificial neural network, provide automatic generation of test cases based on the training sample for the neural network to test the modified control program, a testing process is set, in which the values of the parameters are determined that adequately describe the state of the control object, and according to the result of calculating k of the integrated performance indicator, a decision is made on setting the modified control program for execution to control the object. The specified device and method are not intended for testing automatic control devices for complex technical objects in real time.

Known stand (RU 2308749) for testing electronic units of the automatic control and monitoring system of a gas turbine engine (GTE), containing an electronic regulator, a control and display unit, a discrete command unit, a diagnostics unit, an analog signal normalization unit, a sensor model unit, a multiplexer, an analog a digital converter, a block of models (simulators) of executive mechanisms, a block of imitation of an onboard network. The disadvantage of the stand is the limited number of measuring channels and the possibility of only static simulation of the engine operating modes.

The closest to the proposed technical solution is a stand for testing electronic units of the automatic control and monitoring system of a gas turbine engine (RU 187791), containing an electronic regulator, simulators of executive mechanisms, characterized in that it additionally includes a software and hardware simulator of a propulsion system containing a mathematical model of the engine, sensor simulators, rupture simulation unit, providing real-time operation, while for each type of output signals of sensor simulators and input control signals of simulators of actuators, individual digital modules are used, with the possibility of feedback between the electronic controller and the software and hardware simulator of the propulsion system ...

The disadvantage of the prototype is the lack of hardware and software that provides the prompt creation of various tests for testing automatic control systems (ACS) developed for different gas turbine engines, both in the design and operation of the ACS. In addition, the dimensions of the prototype do not allow it to be used for diagnostics of ACS defects during their operation, directly on the aircraft.

The objective of the present invention is to develop a method and device that provides testing of automatic regulation and control units (BARK) of a technical object at the design stage in order to check their characteristics for compliance with technical requirements before testing on a stand with a real object, during all types of ACS tests. technical object, as well as to search for defects in the ACS during their operation.

The technical result is to improve the quality and reliability of the ACS by achieving a high degree of similarity with the real operation of the technical object, as well as to improve the manufacturability of the design, testing and operation of automatic regulation and control units by reducing the design and testing time of the ACS of the technical object, as well as ensuring the search defects of ACS during their operation.

The task and the technical result is achieved due to the fact that a mobile stand is proposed for testing automatic control and monitoring units of a technical object, containing an electronic regulator, simulators of executive mechanisms with digital modules, a software and hardware simulator of a complex technical object with a mathematical model, sensor simulators, a block for simulating breaks and short circuits of communication lines with real-time operation, characterized in that the stand is made in a host computer with a module for connecting the interface part, which acts as a supervisor of all processes, includes a block with software that generates and runs software tests , an information and diagnostic complex (IDK), which stores and visualizes data on the reaction of the ACS of a technical object to test influences, and an interface part in the form of a block of heterogeneous modules based on DSP microcontrollers, VLIW microcontrollers, etc. programmable systems on a chip - SoC and programmable logic integrated circuits - FPGA, which generates analog and discrete signals that simulate the operation of a technical object, as well as a method of developing and testing the ACS of a technical object, including the development of a mathematical model of a technical object, the development of test signals and testing of automatic regulation and control of the automatic control system of a technical object, characterized in that the development of a model and test signals for testing automatic regulation and control units is carried out using tools of model-oriented design of software such as MATLAB, and when developing test signals, they are divided into software-generated test signals ACS, and signals of the interface part of the block of heterogeneous modules, which are generated by hardware using DSP microcontrollers, VLIW microcontrollers, programmable systems on crystal - SoC and programmable logic integrated circuits - FPGA, test signals act on the ACS of a technical object simultaneously and in parallel, including in real time, providing a high degree of similarity with the real operation of a technical object.

The essence of the proposed group of inventions (on the example of a stand for ACS GTE using the tools of model-oriented design (MOP) of the MATLAB package) is illustrated by a drawing.

FIG. 1 - block diagram of a mobile stand for the development and testing of the ACS of a technical object, where

1 - host computer,

2 - a block with software that generates and runs software tests,

3 - information and diagnostic complex,

4 - a block of heterogeneous modules that simulate the operation of a technical object in real time,

5 - module for connecting the interface part.

The design of the stand is mobile, in the construct a host computer with a module for connecting the interface part allows it to be used both when designing control loops for a technical object (for example, a gas turbine engine - when developing models of a gas turbine engine) at the workplace of a design engineer, and when carrying out all types of tests from laboratory - when designing a specific BARK and bench, including tests at the stands of third-party organizations, before testing directly on board aircraft and helicopters - to check the correct operation of the BARK in any modes of any complexity.

Model-based design tools of MATLAB software provide:

- division of all created tests into two groups, in which part of the tests of the ACS of the gas turbine engine is created and launched on the PC of the operator-tester, and part of the tests due to the model-based design technology (MOP) of the MATLAB package is created by the modular computing system of the interface part of the stand, allows ACS GTE the entire stream of physical influences in real time to solve the problem of simultaneous and parallel impact on the ACS of GTE, a large number of complex analog physical periodic signals, including in real time, which must have very high metrological characteristics (high accuracy, high stability and a large range), thereby achieving a high degree of similarity with the actual operation of the GTE;

- safe preliminary "virtual" verification of the new tests themselves, during their development to reduce the risk of damage to the ACS of the gas turbine engine or the gas turbine engine itself, when working in conditions of erroneous tests.

Thus, the use of modern tools and MOS technology such as the MATLAB package allows, despite the mathematical complexity of models of technical objects (for example, gas turbine engines), to quickly create a variety of tests for testing different ACS for different technical objects (for example, different gas turbine engines). Modularity of hardware and software, transfer of the main algorithmic and software complexity to a MATLAB-type package with a ready-made set of tools, allowing you to quickly create tests of any complexity for checking the ACS of technical objects, for example, various gas turbine engines, and providing the possibility of preliminary "virtual debugging of tests" to increase the safety of testing allows to improve the manufacturability of the design and testing of the BARK and to reduce the cost of developing the ACS of technical objects (for example, different gas turbine engines).

Claims (2)

1. A mobile stand for testing the electronic control system of technical objects, containing an electronic regulator, simulators of executive mechanisms with digital modules, a software and hardware simulator of a complex technical object, simulators of sensors, a block for simulating breaks and short circuits of communication lines with real-time operation , characterized in that the stand is made in the form of a host computer with a module for connecting the interface part, which performs the functions of a supervisor of all processes and includes a block with software that generates and launches software-generated test signals, an information and diagnostic complex that stores and visualizes reaction data ACS of a technical object for test signals, and an interface part in the form of a block of heterogeneous modules based on DSP microcontrollers, VLIW microcontrollers, programmable systems on a chip - SoC and programmable logic integrated circuits - FPGA, I form analog and discrete signals simulating the operation of a technical object. 2. A method of developing and testing an automatic control system for technical objects, including the development of a mathematical model of a technical object, the development of test signals and testing of automatic control and monitoring units of an automatic control system of a technical object, characterized in that the development of test signals for testing automatic control and monitoring units is carried out using the device according to claim 1 and model-based design tools such as the MATLAB package, and when developing test signals, they are divided into software-generated test signals, and signals from the interface part of a block of heterogeneous modules, which are generated in hardware using DSP microcontrollers, VLIW- microcontrollers, programmable systems on a chip - SoC and programmable logic integrated circuits - FPGA, test signals affect the ACS of a complex technical object simultaneously and in parallel, including in real time, providing a high degree of similarity with the real work of a complex technical object.

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