Reaction wheel configuration optimization method and system considering fault condition

Abstract

The invention discloses a reaction wheel configuration optimization method and system considering a fault condition, and the method comprises the steps: determining an installation matrix and an included angle of n-1 reaction wheels according to the minimum two norm of control angular momentum allocated to any n-1 reaction wheels; traversing and calculating an angular momentum envelope volume enclosed by the nth reaction wheel and the n-1 reaction wheels in the first step after one fault occurs; calculating a probability design weight of the reaction wheel according to the reliability of the reaction wheel; introducing a probability design weight, and establishing a reaction wheel configuration optimization model considering the fault condition; and determining the installation vector and the included angle of the nth reaction wheel by using an optimization method within the limited constraint range. According to the reaction wheel configuration optimization method considering the fault condition, the design steps are clear, the physical significance is clear, engineering implementation is easy, the control ability of the reaction wheel can be effectively improved, and the autonomous ability of spacecraft control system operation is improved.

Description

technical field [0001] The invention relates to a reaction wheel configuration optimization method and system considering fault conditions, and belongs to the technical field of aerospace control. Background technique [0002] The reaction wheel is a commonly used actuator in the spacecraft control system. The reaction wheels configured on the spacecraft will inevitably fail during the entire working life, and in the case of failures, the control ability of the reaction wheels is an important factor for the normal operation of the spacecraft. Therefore, from this point of view, it is of great engineering significance to optimize the configuration of the reaction wheel under fault conditions. In fact, optimizing the configuration of the reaction wheel from the fault situation can effectively improve the autonomous operation capability of the spacecraft on the one hand, and can still ensure the normal operation of the spacecraft in the event of a fault; on the other hand, it ...

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Problems solved by technology

[0004] The technical problem solved by the present invention is: in view of the current prior art, the consideration of the control ability of the reaction wheel in the case of failure is relatively lacking, the lack of a systematic configuration method, and the problem that it is difficult to effectively improve the control ability of the reaction wheel in the case of failure, proposes A reaction wheel configuration optimization method and system considering fault conditions

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