Precision attitude regulation of uncertain flexible spacecraft
Haiwen Wu1
Xinghu Wang2
Andong Sheng1
Dabo Xu3
1.School of Automation,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China2.Department of Automation,University of Science and Technology of China,Hefei 230027,Anhui,China3.Shien-Ming Wu School of Intelligent Engineering,South China University of Technology,Guangzhou 511442,Guangdong,China
摘要：Consider the precision attitude regulation with vibration suppression for an uncertain and disturbed flexible spacecraft.The disturbance at issue is typically any finite superposition of sinusoidal signals with unknown frequencies and step signals of unknown amplitudes.First we show that the conventional mathematical model for flexible spacecrafts is transformable to a multi-input multi-output(MIMO)strict-feedback nonlinear normal form.Particularly it is strongly minimum-phase and has a well-defined uniform vector relative degree.Then it enables us to develop an adaptive internal model-based controller in the framework of adaptive output regulation to solve the problem.It is proved that asymptotic stability can be guaranteed for the attitude regulation task and the vibration of flexible appendages vanishes asymptotically.Hence,the present study explores a new idea for control of flexible spacecraft in virtue of its system structures.
机标关键词：precisionflexibleattituderegulationspacecraftuncertain
论文发表日期：2023-05-05
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：13( 246-258 )
英文信息