Fault-tolerant control of satellite attitude control system based on on-line compensation algorithm

作者：Guan Yu^*; Zhao Shilei; Zhang Yingchun; Jia Qingxian

来源：Journal of Harbin Engineering University, 2012, 33(12): 1498-1503.

DOI：10.3969/j.issn.1006-7043.201202033

• Actuator fault
• Boundedness
• Control methods
• Estimation errors
• Fault tolerance control
• Fault tolerant control
• Inverse models
• Matching pursuit algorithms
• Model control
• On-line compensations
• On-line learning methods
• Online compensation
• Online learning algorithms
• Original systems
• Orthogonal matching pursuit
• Orthogonality
• Performance requirements
• Research papers
• Satellite attitude control systems
• Sensor fault

The research paper proposes to examine the inter model-tolerant control method, with a focus on the actuator fault or sensor fault of the satellite attitude control system, based on online kernel learning algorithm; which utilizes the character of inter model control and the compensation ability of online learning method to constitute an adaptive fault-tolerance control of the satellite attitude control system. First, an online kernel learning algorithm based on orthogonal matching pursuit is presented. In this algorithm, the thought of orthogonality is introduced to enhance the sparsity of the method, so as to lighten the online compute burden. The algorithm is also based on the matching pursuit algorithm, which ensures the boundedness of the estimation errors. Next, the online learning algorithm is used to compensate the inverse model of the original system, and then the model compensated is used as the inverse model of the system after malfunction, which, together with the original system, constitutes a pseudo-linear system. In the final phase, the pseudo-linear system is applied to Inter Model Control of the satellite attitude control system and simulation results are presented to show the proposed fault-tolerance scheme is fast and reliable, satisfying the performance requirements in fault situation.

• 出版日期2012