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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

Active Publication Date: 2015-01-28
BEIHANG UNIV
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Problems solved by technology

[0006] The technical solution of the present invention is to provide a fine anti-interference tracking controller with interference cancellation performance for the inaccurate control-oriented model of flexible hypersonic vehicles and the existence of many unmodeled dynamic characteristics in order to achieve high-precision control , to solve the design problem of the anti-jamming tracking controller of the flexible hypersonic vehicle system, and improve the robustness and control accuracy of the system

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Embodiment Construction

[0057] The design steps of the fine anti-jamming tracking controller of a flexible hypersonic vehicle of the present invention are: firstly establish the longitudinal model of the flexible hypersonic vehicle; secondly, establish the nonlinear multi-source interference of the flexible hypersonic vehicle based on the longitudinal model System model; again based on the multi-source interference system model, a nonlinear interference observer is constructed to estimate and compensate the elastic modal interference; finally, a fine anti-interference dynamic inverse tracking controller is constructed based on the nonlinear interference observer; the specific implementation steps are as follows:

[0058] The first step is to establish the longitudinal model of the flexible hypersonic vehicle:

[0059] h · = V sin ( θ - α ) V · = T cos α - D m - g sin ( θ - α ) α · = - L + T sin α mV +...

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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.

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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
Inventor 郭雷王娜张然张玉民乔建忠
Owner BEIHANG UNIV
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