Flight control system digital simulation method based on multidisciplinary combination

Abstract

The invention discloses a flight control system digital simulation method based on multidisciplinary combination. The flight control system digital simulation method comprises the steps that 1, building an electric servo system model, a flight control algorithm model, a sensitive element model and an aircraft motion model; 2, configuring a parameter mapping relationship of data interaction betweenthe models; 3, synchronously advancing simulation time based on the multidisciplinary joint models, performing data exchange, and realizing multidisciplinary joint simulation of the flight control system; and 4, acquiring attitude and overload motion signals required by digital simulation of the flight control system. Structural dynamics such as mechanical clearance, hinge moment and static friction moment, a servo system control algorithm, motor electromagnetism, a flight control system control algorithm, aircraft motion and other characteristics are comprehensively reflected into a flight control system simulation model, and an existing simulation method is improved. The defect that an existing digital simulation method does not consider the multidisciplinary coupling influence among motor electromagnetism, structural dynamics, a control algorithm and the like in a flight control system and does not conform to the reality is overcome.

Description

technical field [0001] The invention relates to the fields of motor electromagnetism, control engineering, mechanical system, software engineering, etc., and specifically relates to a digital simulation method for a flight control system based on multidisciplinary integration. Background technique [0002] The flight control system is a complex engineering system involving multiple disciplines and fields such as motor electromagnetics, control engineering, mechanical systems, and software engineering. The characteristics and design methods of each discipline are also different. The flight control system is usually composed of multiple stand-alone machines with relatively independent functions. , these stand-alone machines communicate data through the interface and work together, and at the same time the flight control system tends to be more integrated and integrated; [0003] The current digital simulation method of the flight control system is to analyze each subsystem ind...

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Problems solved by technology

[0003] The current digital simulation method of the flight control system is to analyze each subsystem independently to form a unified mathematical description model, and then perform digital simulation on this basis. This method has less consideration for the cross-link coupling between subsystems. It cannot truly reflect the influence of multidisciplinary coupling between motor electromagnetics, structural dynamics, and control algorithms in the flight control system, and the modeling and analysis of each stand-alone machine can only be carried out after the prototype of the stand-alone machine is developed, which lengthens the flight to a certain extent. control system development cycle

[0004] To sum up, the current digital simulation method of the flight control system cannot cover all disciplines. In order to make up for the defects of the existing digital simulation method, the simulation software of various disciplines is combined together. A Digital Simulation Method of Flight Control System Combined with Dynamics and Control Algorithms Simultaneously

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