Method for observing longitudinal motion state of aircraft by using time varying measurement delay output signal

Abstract

The invention discloses a method for observing the longitudinal motion state of an aircraft by using for a time varying measurement delay output signal aircraft. The longitudinal motion state observation method comprises four steps, i.e. firstly, acquiring a kinetic model of the aircraft in a pitching plane; secondly, designing an observer; thirdly, adjusting an observation parameter and checkingthe observation effect; and fourthly, finishing the design. According to the longitudinal motion state observation method, the current time state of the system is reconfigured according to a model ofcontaining certain time varying delayed output and system, and thus the observation of the system state is realized. The observation of a longitudinal motion kinetic model of the aircraft can be realized and the observation of other control objects can also be realized. Therefore, the longitudinal motion state observation method has better practical value and favorable application prospect in thetechnical field of flying control.

Description

(1) Technical field [0001] The invention relates to a time-varying measurement delay output signal aircraft longitudinal motion state observation method, which is designed for an aircraft longitudinal dynamics model including time-varying measurement delay output, and belongs to the technical field of flight control. (2) Background technology [0002] The research on the aircraft has always been a hot issue that researchers have paid close attention to, and the aircraft control system is an indispensable link to ensure the stable flight of the aircraft in space. In the process of aircraft control system design, two factors need to be considered: stability and rapidity. Stability is to ensure that the aircraft can fly stably in space, while rapidity requires the aircraft to respond quickly and correctly to some sudden changes during high-speed flight. [0003] During the movement of the aircraft in space, it needs to control its attitude angle (track inclination angle, attac...

AI Technical Summary

Problems solved by technology

In the process of transmitting the measurement signal from the satellite to the aircraft, there will inevitably be a certain delay, which will bring great inconvenience to the design of the subsequent control law

Since the measurement delay is not necessarily a constant value in the actual transmission process, its time-varying characteristics bring further difficulties to the design of the observer

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