Fine anti-interference tracking controller of flexible hypersonic vehicle

A tracking controller, hypersonic technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of inaccurate models
CN102749851BActive Publication Date: 2015-01-28BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2015-01-28

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Abstract

The invention relates to a fine anti-interference tracking controller of a flexible hypersonic vehicle. A method for constructing the fine anti-interference tracking controller comprises the following steps of: (1) building a longitudinal model of the flexible hypersonic vehicle; (2) building a multisource interference system model of the flexible hypersonic vehicle based on the longitudinal model in the step (1): firstly, building a control-oriented nominal model; then regarding an elastic mode as interference and building an elastic mode interference model; and finally, building a multisource interference system model by combining the above two models and considering measurement errors, parameter uncertainty, external interference, etc.; (3) designing a nonlinear disturbance observer to estimate the elastic mode interference based on the multisource interference system model in the step (2); and (4) constructing the fine anti-interference dynamic reverse composite tracking controller based on the nonlinear disturbance observer in the step (3). The fine anti-interference tracking controller has the advantages of high anti-interference performance, rapid tracking speed, high control accuracy, etc., and applies to high accuracy tracking control of the height and the speed of the flexible hypersonic vehicle.
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Description

Technical field

[0001] The invention relates to a fine anti-interference tracking controller for a flexible hypersonic aircraft, which is mainly applied to the speed and height tracking control of the flexible hypersonic aircraft. Background technique

[0002] Due to the extremely high application value of hypersonic aircraft, all countries are currently rushing to study hypersonic aircraft, and its waverider configuration can easily cause elastic deformation; therefore, the control of flexible hypersonic aircraft has become a hot issue in recent years .

[0003] However, the control of flexible hypersonic aircraft faces great technical challenges. First, the aircraft system has the characteristics of strong nonlinearity, strong coupling, and fast time-varying, so the model based on the mechanism is usually very complicated, and the existing nonlinear control methods cannot be directly used for flight control design; secondly, the aircraft has a large flight span and flight enviro...

Claims

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