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Flexible satellite attitude controller and method considering maneuvering control and stable control

A flexible satellite, stable control technology, applied in attitude control, non-electric variable control, control/adjustment system, etc., can solve the problems of large attitude overshoot, unstable attitude, etc., to extend the maneuvering time, good control effect, The effect of improving posture stability

Active Publication Date: 2021-10-29
BEIJING INST OF CONTROL ENG
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Problems solved by technology

The disadvantages of this method are: the attitude is not stable enough during the parameter switching process; the large-angle attitude maneuver needs to be implemented in conjunction with the maneuver planning, and there is often a large attitude overshoot before and after the maneuver

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  • Flexible satellite attitude controller and method considering maneuvering control and stable control
  • Flexible satellite attitude controller and method considering maneuvering control and stable control
  • Flexible satellite attitude controller and method considering maneuvering control and stable control

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Embodiment Construction

[0024] The present invention will be further elaborated below in conjunction with embodiment.

[0025] Aiming at the shortcomings of using one control structure and two sets of control parameters to deal with the tasks of attitude maneuver control and attitude stability control in current engineering, the present invention proposes a method that takes both attitude maneuver control and attitude stability control into consideration, and combines nonlinear The tracking differentiator and the single neuron shunt module are combined to realize the control method of compressing the transition process and reducing the attitude overshoot. Compared with existing methods, this method does not require additional maneuvering path planning when maneuvering at large angles, but can directly use the target attitude for control, and can effectively ensure the stability of the attitude without prolonging the maneuvering time.

[0026] The flexible satellite attitude controller includes: a sch...

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Abstract

The invention relates to a flexible satellite attitude controller and method considering maneuvering control and stable control, and belongs to the field of spacecraft attitude control. The flexible satellite attitude controller includes a scheduling logic module, a tracking differentiator, a single neuron shunting module, a first controller, a first structure filter, a second controller and a second structure filter. Attitude maneuver control and attitude stability control are taken into consideration, and the nonlinear tracking differentiator and the single neuron shunt module are combined for use to realize a compression transition process and reduce attitude overshoot. According to the method, additional maneuvering path planning is not needed during large-angle attitude maneuvering, the target attitude can be directly used for control, and the stability of the attitude is effectively ensured on the premise that the maneuvering time is not prolonged.

Description

technical field [0001] The invention belongs to the field of attitude control of spacecraft, and in particular relates to a flexible satellite attitude controller and method that take into account maneuver control and stability control. Background technique [0002] Satellite attitude control tasks in orbit usually include two types: large-angle attitude maneuver control and attitude stabilization control near a fixed attitude (usually zero attitude). The requirements of these two kinds of control have their own emphasis: attitude maneuver control emphasizes the rapidity and stability of the process; attitude stability control emphasizes the steady-state accuracy and attitude stability near a fixed attitude. Due to the different task requirements and inherent characteristics, it is difficult to use a control law with fixed structure and fixed parameters to complete these two control tasks. At present, the most commonly used method in engineering is: one control structure an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08
CPCG05D1/0833
Inventor 王佐伟刘磊何刚王祥李建平刘潇翔李乐尧沈扬帆王青贾涛李洋高秀娟
Owner BEIJING INST OF CONTROL ENG
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