Self-adaptive compensation control method for aircraft control system under multi-azimuth turbulent wind disturbance

Abstract

The invention discloses a self-adaptive compensation control method for an aircraft control system under multi-azimuth turbulent wind disturbance. The method comprises steps that 1, according to transverse and longitudinal motion models of an aircraft control system in the prior art, on the basis that the dominant wind direction of turbulence disturbance is determined, and a disturbance model corresponding to an aircraft when the aircraft encounters turbulence disturbance of different dominant wind directions is established and used for representing transverse and longitudinal motion models ofthe aircraft at the moment; 2, a general input-output system model is adopted to represent transverse, lateral and longitudinal motion models of the aircraft when turbulence disturbance of differentprevailing wind directions occurs; 3, based on an index function used for establishing a piecewise function, an input-output system model is established based on time slicing; 4, that the existing aircraft control system parameters and turbulence disturbance parameters are known are assumed, a nominal controller is established according to the known conditions; 5, that existing aircraft control system parameters and turbulence disturbance parameters are unknown are assumed, and a self-adaptive controller is established according to the known conditions. The method is advantaged in that the aircraft control system can be effectively ensured to realize expected closed-loop stability and output tracking performance when encountering the turbulence disturbance alternate influence of a plurality of predominant wind directions so that the safe flight of the aircraft is realized.

Description

technical field [0001] The invention belongs to the technical field of aircraft automatic control, in particular to an aircraft control system with minimum phase characteristics, adopting a model reference adaptive control method, and relates to an adaptive compensation control method for an aircraft control system under multi-directional turbulent wind disturbance. Background technique [0002] With the continuous innovation of science and technology, new types of aircraft continue to emerge, making the aircraft develop in the direction of multi-variable, strong coupling, fast time-varying, strong nonlinear and other characteristics. Due to the complexity of the aircraft system, it is more sensitive to the influence of the external environment, and the research on its anti-jamming becomes more and more important. Among the influences of the external environment on the aircraft, the weather is the most obvious and intuitive one. Atmospheric turbulence, as a form of random a...

AI Technical Summary

Problems solved by technology

[0003] The existing control methods for suppressing the influence of turbulent disturbance ignore the random and irregular movement of turbulent flow, and mechanically understand it as wind disturbance in a single direction

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