An Aircraft Reconfiguration Design Method Based on Control Assignment Technology

Abstract

The present invention relates to an aircraft reconfiguration design method based on control distribution technology, comprising the following steps: S1, offline design of FDI module; S2, offline determination of air rudder failure mode; S3, offline determination of command distribution algorithm under normal conditions; S4, offline Determine the control reconfiguration mechanism in the case of air rudder failure; S5. Offline design of the control laws of each channel under normal conditions; S6. Perform six-degree-of-freedom simulation verification of the aircraft. Compared with the traditional design method, this method can ensure that the aircraft can complete the flight test task according to the predetermined plan without changing the control law of the missile when the air rudder actuator of the aircraft fails, which can effectively improve the safety and reliability of the aircraft flight. Stickiness. The method has the advantages of being simple, practical, and easy to realize in engineering, and has good application and popularization value.

Description

technical field [0001] The invention relates to an aircraft control reconfiguration design method. Background technique [0002] In the field of aerospace, more and more aircraft have more aerodynamic control margin due to the application of multiple control surfaces and thrust vector technology, and the control mode and combination of aircraft control surfaces are no longer unique, which makes the control The design difficulty and complexity of the system are greatly increased, but it also brings redundancy to the reconfiguration of flight control. Control distribution is applied to the flight control system. The design of the controller can be divided into two relatively independent parts. and Identification, FDI) module to identify the failed control surface, and then achieve reconstruction through control redistribution without adjusting the control law. Therefore, the reconfiguration control based on control assignment is of great significance to improve the safety an...

AI Technical Summary

Problems solved by technology

[0007] At present, the research on the reconfiguration control of flight control system in the literature is mainly to directly reconfigure the flight control law, which cannot meet the real-time requirements of the flight control system for control allocation, especially the fault-tolerant reconfiguration control allocation algorithm. Difficult to be effectively applied

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