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Motion control design method of hypersonic flight vehicle

A hypersonic and design method technology, applied in non-electric variable control, vehicle position/route/altitude control, position/direction control, etc., can solve the problem that traditional control is difficult to adapt to large envelope, multi-mission mode flight movement, etc.

Inactive Publication Date: 2014-06-04
湖北蔚蓝通用航空科技股份有限公司
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AI Technical Summary

Problems solved by technology

Traditional control is difficult to adapt to large envelope, multi-mission mode flight movement

Method used

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  • Motion control design method of hypersonic flight vehicle
  • Motion control design method of hypersonic flight vehicle
  • Motion control design method of hypersonic flight vehicle

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Embodiment Construction

[0056] The invention discloses a hypersonic vehicle motion control design method, comprising the following steps:

[0057] 1) Give the longitudinal model of the hypersonic vehicle;

[0058] 2) Considering the dynamics of the engine, the dynamic equation of the engine is described by the second-order system model, and the finite-time altitude control design for the hypersonic vehicle is completed;

[0059] 3) The sufficient conditions for controller gain selection are given, and the flight speed and track inclination can converge to a given value in a limited time, and then the finite-time speed control design for hypersonic vehicles is completed;

[0060] The longitudinal model of the hypersonic vehicle in the aforementioned step 1) is described as follows:

[0061] V · = T cos α - D m - ...

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Abstract

The invention discloses a control design method of a hypersonic flight vehicle. The method comprises the following steps that a longitudinal model of the hypersonic flight vehicle is given; finite time height control design to the hypersonic flight vehicle is achieved according to an engine dynamic equation described by a second-order system model; according to the sufficient condition of controller gain selecting, a flight speed and a flight path angle are converged to a given value within the finite time, and therefore the finite time speed control design to the hypersonic flight vehicle is achieved. According to the motion control design method of the hypersonic flight vehicle, based on the control method of a finite time control technology, the controller design method of dynamic inverse and the finite time control technology is combined, height control and speed control are seen as two sub systems for designing controllers respectively, and the difficult problems that the model order of the hypersonic flight vehicle is high and finite time control can not be achieved easily are solved.

Description

technical field [0001] The invention relates to the technical field of hypersonic vehicle control, in particular to a hypersonic vehicle motion control design method. Background technique [0002] A hypersonic vehicle is a highly nonlinear multivariable system. Due to the high Mach number and flight conditions at the flight altitude, it is very sensitive to changes in the shape, aerodynamic parameters and atmospheric conditions. These factors have a great negative effect on the flight control system. , the aerothermal and aerodynamic characteristics of the aircraft change drastically. The reentry dynamics model has the characteristics of fast time-varying, strong nonlinear coupling, uncertainty, multiple disturbances, and high real-time performance. Traditional controls are difficult to adapt to large-envelope, multi-mission mode flight movements. Therefore, advanced reentry control methods are researched at home and abroad, so that the aircraft has stable flight character...

Claims

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Application Information

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IPC IPC(8): G05D1/00
Inventor 宋谨韩松其他发明人请求不公开姓名
Owner 湖北蔚蓝通用航空科技股份有限公司
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