Universal simulator for aircraft engines

Abstract

The invention discloses a universal simulator for aircraft engines. The universal simulator comprises an upper industrial personal computer, a simulation measurement and control computer, a display control desk, a combination instrument case with a plurality of instrument hardware modules, an instrument extension case, a signal adaptation unit, a direct-current voltage-stabilized source and a special testing cable. The universal simulator has the advantages that mathematical models of the engines are operated by an embedded high-performance real-time operating system of the simulation measurement and control computer, so that the real-time performance and the effectiveness of simulation experiments can be guaranteed; hardware architectures for forming testing systems are standard PXI [PCI (peripheral component interconnect) extensions for instrumentation] bus open architectures, accordingly, the hardware modules of various mature PXI bus interfaces can be extended and configured according to particular testing application, and the universal simulator is high in automation degree, extensibility and compatibility and good in maintainability; the signal adaptation unit is configured with standard and universal electric connectors by means of integration, and only corresponding matched testing connecting cables need to be replaced, so that electric connection of the testing systems can be quickly reconstructed by the simulator for the engines, and requirements of platforms on the universality can be met.

Description

technical field [0001] The invention relates to a simulation test system for an aero-engine control system, in particular to a simulation test system for an aero-engine digital electronic controller hardware-in-loop. Background technique [0002] At present, the aero-engine control system is a multi-variable, time-varying, non-linear, and multi-functional complex digital control system. Its performance directly affects the performance of aero-engines and aircraft, and it is also a difficult technology. , during which work such as system development, ground test run, high-altitude test run and installation test flight verification must be completed. With the increase of control function requirements and the continuous increase of control variables, the control system is becoming more and more complex. Among them, the input and output signal types of digital electronic controllers have changed from a few to dozens; the number of signals has changed from a dozen to more than a ...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the equipment of the test bench is huge, which can only meet the test under the environmental conditions of the laboratory; although the test bench also includes engine simulation equipment, but due to the lack of pertinence, in the system design, the model simulation The computer does not use a hardware real-time system, and relies entirely on software timing, which cannot meet the control system’s requirements for precise timing in control law verification, which may cause repetitions in engineering models; engine sensor characteristic simulation still uses non-standard devices with analog or digital Circuit interface, its platform versatility is not strong, due to the compatibility of the electrical interface of different controllers, it may cause uncertainty in the test results; in terms of fault simulation, the test bench does not have the ability to simulate hardware circuit faults, such as signal open circuit, short circuit, noise interference etc.

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