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Design method of three-channel adaptive control system for axisymmetric aircraft based on motion state comprehensive recognition

A technology of adaptive control and motion state, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., and can solve the problems of poor practicability

Inactive Publication Date: 2014-08-13
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of poor practicability of the existing fuzzy adaptive control methods for hypersonic vehicles, the present invention provides a design method for a three-channel adaptive control system for axisymmetric aircraft based on comprehensive identification of motion states

Method used

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  • Design method of three-channel adaptive control system for axisymmetric aircraft based on motion state comprehensive recognition
  • Design method of three-channel adaptive control system for axisymmetric aircraft based on motion state comprehensive recognition
  • Design method of three-channel adaptive control system for axisymmetric aircraft based on motion state comprehensive recognition

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Embodiment Construction

[0044] refer to Figure 1-4 . The specific steps of the design method of the axisymmetric aircraft three-channel adaptive control system based on the comprehensive identification of the motion state of the present invention are as follows:

[0045] (1) Construct a three-channel feature model and feature state quantities that can reflect the motion state of the aircraft.

[0046] According to the attitude dynamics equation of the aircraft, the general model of attitude dynamics with the angle of attack α, sideslip angle β and roll angle γ as state variables is established as follows:

[0047] J z α · · = M z ω ‾ ...

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Abstract

The invention discloses a design method of a three-channel adaptive control system for an axisymmetric aircraft based on motion state comprehensive recognition for solving the technical problem of poor practicability of the existing fuzzy adaptive control method for a hypersonic flight vehicle. The design method adopts the following technical scheme: building a characteristic model applicable to real-time online recognition of characteristic parameters; building the relationship between the characteristic parameters of the aircraft and the motion state of the aircraft, and then directly or indirectly building a characteristic state variable of the flight state of the aircraft for online real-time comprehensive recognition according to the measurable result of the exiting sensor on the aircraft on the motion state variable; combining the built characteristics state variable with the concrete control method according to the performance index of the flight control system, so that the designed control system can carry out comprehensive recognition on the motion state of the aircraft, the effects of quickly recognizing the motion state of the aircraft online and adjusting the parameter of the control system are achieved, and the practicability of the three-channel adaptive control system for the axisymmetric aircraft is improved.

Description

technical field [0001] The invention relates to a design method for a three-channel adaptive control system of an axisymmetric aircraft, in particular to a design method for an axisymmetric aircraft three-channel adaptive control system based on comprehensive identification of motion states. Background technique [0002] With the continuous development of the aircraft's own structure and the continuous increase of the flight envelope, its mathematical model is difficult to establish accurately, especially its aerodynamic characteristics show fast time-varying and strong uncertainty with the change of the flight environment and flight attitude. It brings many difficulties to the design of the control system of the aircraft. Many traditional control methods are no longer applicable, and the design of the aircraft control system is developing from the traditional offline binding and switching of controller parameters to the adaptive control with online adjustable controller par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G05D1/10
Inventor 林鹏周军邓涛王楷董诗萌
Owner NORTHWESTERN POLYTECHNICAL UNIV
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