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Trajectory tracking control method for NSV (Near Space Vehicle)

A near-space vehicle and trajectory tracking technology, applied in the direction of adaptive control, general control system, non-electric variable control, etc., can solve the problems of large error, poor stability, lack of NSV system research, etc.

Active Publication Date: 2016-06-01
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that there is a lack of systematic research on NSV in the prior art, and the error is large and the stability is poor when it is tracked.

Method used

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  • Trajectory tracking control method for NSV (Near Space Vehicle)
  • Trajectory tracking control method for NSV (Near Space Vehicle)
  • Trajectory tracking control method for NSV (Near Space Vehicle)

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Embodiment Construction

[0041] The present invention designs a robust adaptive trajectory tracking control strategy for a near-space vehicle NSV (NearSpace Vehicle) six-degree-of-freedom twelve-state model in the cruising flight stage. Firstly, a new dynamic model approximation method is proposed for the design of track controller. Second, a controller-independent disturbance estimator is designed using adaptive techniques. Then, using the combination of dynamic inverse and backstepping methods, the design methods of position, attitude angle and angular rate controllers are given respectively. Among them, the instruction filter is applied to avoid the differential expansion problem in the backstepping design, and the tracking error caused by the incomplete execution of the project instruction is corrected by the compensation item, and the robust item is constructed to suppress the influence of the interference estimation error on the trajectory tracking. The above-mentioned method of the present inv...

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Abstract

The invention provides a robust adaptive trajectory tracking control strategy designed for a six-freedom-degree twelve-state model of an NSV (Near Space Vehicle) at a cruising flight stage. The method comprises the steps: firstly proposing a brand-new dynamic model approximation method which is applied to the design of a flight path controller; secondly designing an interference estimator independent of the controller through employing the adaptive technology; and thirdly employing dynamic inverse to be combined with a backstepping method, and respectively giving design methods for position, attitude angle and angular rate controllers, wherein an instruction filter is used for avoiding differential expansion in the backstepping design, and a tracking error caused by that a project approval instruction cannot be completely executed is corrected through a compensation item, so as to construct a robust item to inhibit the impact on the trajectory tracking from an interference estimation error. According to the embodiment of the invention, the above method is described in detail.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a robust adaptive trajectory tracking control method for a six-degree-of-freedom twelve-state near-space aircraft. Background technique [0002] Near space vehicle (NearSpaceVehicle, NSV) has the advantages of strategy, tactics and cost-effectiveness, and has become an extremely important development direction of the world's aerospace field in the 21st century. At present, NSV research has entered the advanced technology development and verification stage from the concept and principle exploration stage with hypersonic cruise bombs, hypersonic aircraft, trans-atmospheric vehicles and aerospace aircraft as the application background. [0003] As we all know, NSV, as a new type of aircraft, has attractive application prospects. Of course, the nonlinearity, strong coupling, and fast time-varying parameters of the dynamic system bring new challenges to the control. Due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G05D1/10
CPCG05B13/042G05D1/101
Inventor 张强袁铸钢于宏亮
Owner UNIV OF JINAN
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