Fault tolerant control method for a spacecraft equipped with a flywheel based on robust adaptation

A robust adaptive and fault-tolerant control technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve rare problems and so on
CN104880948AActive Publication Date: 2015-09-02陕西智星空间科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
陕西智星空间科技有限公司
Publication Date
2015-09-02

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Abstract

Provided is a fault tolerant control method for a spacecraft equipped with a flywheel based on robust adaptation. The method comprises five steps of: 1, establishing a spacecraft kinematical equation; 2, establishing a spacecraft kinetic equation; 3, performing desired angular velocity locus design; 4, performing controller output torque design; and 5, performing numerical simulation. Under the circumstance that a FDD device is not used, the method online estimates a triaxial torque fault factor and designs a robust adaptive fault tolerant controller. The research aims at enriching spacecraft PFTCS methods and providing technical support for spacecraft attitude control in the future.
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Description

technical field

[0001] The invention relates to the technical field of spacecraft attitude control. Specifically, it relates to a robust adaptive-based fault-tolerant control method for spacecraft with flywheels. Using this method can ensure that the designed fault-tolerant control method can still effectively realize the attitude control of the spacecraft when there are external disturbances in the spacecraft and the reaction flywheel as the actuator has a torque loss failure. Background technique

[0002] Fault-tolerant control means that when some components in the control system fail, the system can still complete the control task safely under the condition that the expected performance index or performance index is slightly reduced (but acceptable). Research on fault-tolerant control makes it possible to improve the security and reliability of complex systems.

[0003] Fault Tolerant Control System (FTCS) can be divided into two categories: active fault tolerant contr...

Claims

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