大型柔性空间结构的分散鲁棒自适应控制  

Decentralized Robust Adaptive Control for Large Flexible Space Structures

作　　者：杜树新[1] 陈新海[1] 

机构地区：[1]西北工业大学

出　　处：《西北工业大学学报》1995年第4期624-628,共5页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金

摘　　要：提出了大型柔性空间结构的分散鲁棒自适应控制方法。基本思想是采用反馈控制抑制其不确定性，而反馈控制中反馈系数由于不确定项的界未知而采用自适应算法估计得到。对大型柔性空间结构ＭａｓｔＦｌｉｇｈｔＳｙｓｔｅｍ的仿真证实了方法的有效性。Structural characteristics described by large size, light damping and low ftequency necessitate active vibration control for large nexible space structures (LFSS). It is difficult touse centralized control theory to handle its active control problem due to its large amount ofinput and output information. In this paper, decentralized robust adaptive control methodsaloe presented to reduce large-scale system control to control for interconnected and smallscale subsystems;thus, system implementation is simplified.The basic idea of decentralized robust adaptive control algorithms given by equs. (4),(5) and (17), (18) is to use feedback control to stabilize the uncertainty, and the feedbackcoefficient determined by bounds of uncertainties is estimated by using an adaptive algorithm. This method overcomes drawback of previous methods where the feedback coefficientis obtainted on basis of known bounds of uncertainties' Simulation results of Mast FlightSystem show effectiveness of proposed decentfralized robust adaptive control methods forlarge flexible space structures'

关 键 词：柔性空间结构 分散鲁棒控制 自应控制 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]