RU2882U1 - STAND FOR TESTING ELECTRONIC REGULATORS OF GAS-TURBINE ENGINES - Google Patents

Abstract

Test bench for control equipment, including a test controller, an input converter, the input of which is connected to the output of the tested controller, and the output is connected to the input of the electronic bench model, characterized in that the output of the electronic bench model is connected to the input of the voltage-frequency conversion unit, the output of which is connected with the input of the galvanic isolation block, the first output of which is connected to the first input of the pulse duration limitation block, and the second output is connected to the input of the piecewise linear block th approximation, the output of which is connected to the second input of the pulse duration limiting unit, whose output is connected to the input pulse amplitude limit unit, an output coupled to an input filter block low frequency, whose output is connected to the input of the test controller.

Description

STAND FOR TESTING ELECTRONIC GAS-TURBINE REGULATORS

The utility model relates to the field of automatic regulation of aircraft gas turbine engines, namely to testing machines and engines.

Known modeling stand 1, p.2b9 for the study of the control system of the aircraft, consisting of a machine model of the aircraft, simulators of external influences, simulators of ground-based real equipment, on-board real apparatus | Known stand C2, p.28 for checking electronics, consisting of a digital model of the system, control and monitoring monitor, electronic control unit, full-scale self-propelled guns and sistels for collecting data on the functioning of self-propelled guns. The disadvantages of these devices is the high cost of testing and insufficient depth of control.

The closest technical solution chosen for the prototype is stand 3, p.357 for testing the regulatory equipment, consisting of an electronic bench model, input and output converters and the tested controller. The disadvantage of this stand is the low depth of Kdiatrble for the manufacture of electronic regulators.

The task to which the claimed role-playing model is aimed is to increase the control testing of electronic GHD regulators.

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The problem is solved with the help of a test bench for regulating equipment, including a test controller, the output of which is connected to the input of the input converter, the output of which is connected to the input of the electronic bench model, unlike the closest analogue, the output stand is connected to the unit with the result which is connected to the input of the unit of the year of evolution, the first output of which is connected to the unit for limiting the duration of pulses, and the second output is connected to the input of the unit -1euso-linear appr simasch and - whose output is connected to a second input of ogranieniya 1shpulsov duration, whose output is connected to the input pulse amplitude limit unit vkod coupled to an input filter block low frequency, whose output is connected to the input of the test controller.

Figure 1 presents a block diagram of a stand. The stand contains a test controller 1, the output of which is connected to the input of the input converter 2, the output of which is connected to the input of the electronic bench model 3, in contrast to the closest analogue, the output of the electronic bench model 3 is connected to the e-vcc of the voltage-frequency converter 4, the output of which connected to

the input of the galvanic isolation unit “5, the first output of the cotrbngo is connected to the first input of the pulse duration limiting unit 6, and the second output is connected to the input of the piecewise linear ashfoksimation unit 7, the output of which is connected to the second input of the pulse duration limiting unit 6, the output of which is connected to the input pulse amplitude limiting unit-8, the output of which is connected to the input of the low-pass filter unit 9, the output of which is connected to the input of the tested controller 1.

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The stand functions as follows. From the test controller 1, a control signal is fed through the digital-to-analog converter to the input converter 2. The input converter 2 converts the control signal into the form necessary for the electronic bench model 3. Electronic bench model 3 simulates the reaction of the gas turbine engine to the control action and generates analog signal corresponding to the output signal of a thermocouple standing on the engine. From the electronic bench model 3, the control voltage is supplied to the voltage-chaothota conversion unit 4, where it is converted to the pulse repetition rate and, through the galvanic isolation unit 5, is supplied to the pulse duration limitation units 6 and the pulse amplitude limitation units 8, where pulses of constant volt-second area are generated, which are then integrated by means of a low-frequency filter 9 and, in the form of the corresponding voltage of the millivolt range, they are fed to the input of the test controller 1. To ensure the required second nonlinear characteristic depending on temperature thermo emf is a block piecewise linear approximation, which, depending on velicheiy postrayus to its input frequencies next pulse duration adjustment to provide a desired nonlinear characteristic.

The application of the proposed device allows to increase the depth of control of electronic regulators.

- Vice-rector for scientific work

Zhernakov V, S.

REFERENCE MODEL FORMULA

Test bench for regulating equipment, including the test controller, the output of which is connected to the input of the input converter, the output of which is connected to the input of the electronic bench model, characterized in that the output of the electronic bench model is connected to the input of the frequency voltage conversion unit, the output of which is connected to the input of the galvanic unit decoupling, the first output of which is connected to the first input of the block for limiting the duration of pulses, and the second output is connected to the input of the block of piecewise linear approximation Whose output is coupled to a second input of the pulse duration limiting unit, an output of which is connected to the input pulse amplitude limit unit, whose output is connected to the input of low-frequency filter unit, whose output is connected to the input of the test controller.

Sources of information taken into account:

1. Gorbatsevich E, D ,, Levinson F, §, Analog modeling of control systems. M .: Nauka, 1984.

2. The use of parallel computing on microTsSh for modeling engines when testing self-propelled guns gas turbine engines in real time, / News of foreign science and technology. Series aircraft engine, 1989, N1, s, 23-29,

Claims (1)

Test bench for control equipment, including a test controller, an input converter, the input of which is connected to the output of the tested controller, and the output is connected to the input of the electronic bench model, characterized in that the output of the electronic bench model is connected to the input of the voltage-frequency conversion unit, the output of which is connected with the input of the galvanic isolation block, the first output of which is connected to the first input of the pulse duration limitation block, and the second output is connected to the input of the piecewise linear block th approximation, the output of which is connected to the second input of the pulse duration limiting unit, whose output is connected to the input pulse amplitude limit unit, an output coupled to an input filter block low frequency, whose output is connected to the input of the test controller.