Aviation hydraulic steering engine system fault simulation model base building method

Abstract

The invention relates to an aviation hydraulic steering engine system fault simulation model base building method. The method includes the steps: first, building a mathematic model of a hydraulic steering engine system; second, building simulation nominal models under various working conditions according to the mathematic model of the hydraulic steering engine system, and saving the models and simulation data; third, building fault simulation models under various typical fault conditions based on the simulation nominal models, and saving the models and the simulation data; fourth, building a corresponding relation table of model name keywords, model names and model saving paths to facilitate search for the needed models and simulation data. The status quo of lack of system fault data can be improved, and the data are reserved for subsequent research for a fault diagnosis method for the system.

Description

technical field

[0001] The invention belongs to the field of fault diagnosis of a hydraulic steering gear system, and relates to a method for constructing a fault simulation model database of an aviation hydraulic steering gear system (A Method to Construct Simulation Model Database for Hydraulic Actuator System). Background technique

[0002] The aviation hydraulic steering gear system is an important subsystem of the flight automatic control system, which has a significant impact on the safe take-off and landing of the aircraft and its flight performance. A typical hydraulic steering gear system is a closed-loop system composed of a controller, a servo valve, a hydraulic cylinder and a position sensor.

[0003] The hydraulic steering gear system has many components, complex structure, and faults are correlated. A single measurement information contains limited fault characteristics and may cover multiple fault modes. It is necessary to integrate multiple measurement inform...

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