A comprehensive simulation test and fault injection platform for turbofan engines for UAVs

Abstract

The invention belongs to the technical field of simulation test, and relates to a turbofan engine comprehensive simulation test and fault injection platform for an unmanned aerial vehicle. A real-timemodel simulation system outputs each state parameter of an engine in real time according to an inlet condition simulated and issued by a signal simulation system and the state parameter is outputtedto a signal simulation system; the signal simulation system simulates the state signal transmitted by the model simulation system and outputs a signal which can be identified by a core control unit; afault injection system is connected in series between the signal simulation system and the core control unit and is used for non-invasive fault injection; the core control unit collects all state signals of the engine at the output end of the core control unit, duty ratio signals are outputted to a load simulator of the signal simulation system through control rule calculation, sequential control, signal fault judgment and redundancy switching, and the purpose of fuel oil adjustment is achieved. Full-envelope real-time dynamic simulation is carried out, and a complete research and developmentsystem of numerical simulation, prototype verification and semi-physical simulation verification of the engine control system is formed.

Description

technical field [0001] The invention belongs to the technical field of simulation testing, and relates to a platform for comprehensive simulation testing and fault injection of a turbofan engine for an unmanned aerial vehicle. Background technique [0002] The hardware-in-the-loop simulation test equipment of the traditional turbofan engine is poor, and only a simple single-operating point steady-state test can be performed, and the control performance of the complex system cannot be verified, and the engine state and the real-time control follow-up of the control system cannot be simulated in real time; at the same time, the hardware-in-the-loop simulation When , the fault simulation of each sensor or actuator in the control system is relatively simple, and only the open circuit or short circuit fault mode can be simulated. At the same time, the verification of the effectiveness of redundant measures after a failure has a strong dependence on the engine ground test, which n...

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Problems solved by technology

The original R&D model and supporting means can no longer meet the requirements

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