A Robust Adaptive Actuator Failure Compensation Scheme for Spacecraft with Unmodeled Dynamics

摘要：

　　A robust adaptive actuator failure compensation scheme is developed for attitude tracking control of a spacecraft in the presence of unknown inertia parameters,unmodeled dynamics and uncertain actuator failures.A new robust adaptation scheme involving modification terms in the update laws is designed for estimating the failure patterns and failure values,in addition to estimating the inertia parameters,for direct adaptive actuator failure compensation.It is shown that such a robust adaptive design is able to ensure the desired closed-loop stability and that tracking errors can be made sufficiently small by properly choosing the design parameters despite the unknown inertia matrix,unmodeled dynamics and actuator failure uncertainties.Illustrative simulation results of an application to a spacecraft model are presented to verify the desired robustness properties.

关键词： Actuator failure compensation Robust adaptive control Unmodeled dynamics Spacecraft

作者: YAO Xuelian TAO Gang LV Xunhong

作者单位: College of Automation Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,P. College of Automation Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,P.

会议类型: 国际会议

会议名称: The 33th Chinese Control Conference第33届中国控制会议

会议地点: 南京

会议语种:英文

页码: 3100-3105

在线出版日期: 2014-07-28（万方平台首次上网日期，不代表论文的发表时间）