A Robust Vibration Suppression Controller Design for Space Flexible Structures

摘要：

Being an active vibration suppression method, the positive position feedback (PPF) control has attracted great attentions to damp out the flexible space structure vibrations which make adverse impacts for spacecraft attitude pointing precision. But the robustness with respect to the inaccurate structure modal frequencies is seldom considered in PPF controller designing. In this paper, robust asymptotically stability criterions are proposed to deal with the inaccurate structure modal frequencies. According to these criterions, a robust PPF controller design method is proposed. The robust PPF controller is derived from solving a group of LMIs with adjustable parameters. These parameters describe the robustness with respect to the structure modal frequency variations and convergence velocity of the vibration modes, respectively. Properly setting these parameters can achieve a tradeoff between the robustness for the modal frequency variations and the damping performances of the structure oscillations. Finally, a simulation is presented to illustrate the effectiveness of the proposed robust PPF controller design method.

关键词： flexible structures active vibration suppression positive position feedback robust control

作者: Zhang Long Duan Guangren

作者单位: Harbin Institute of Technology, Harbin 150001, China

会议类型: 国际会议

会议名称: The 24th Chinese Control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)

会议地点: 太原

会议语种:英文

页码: 4037-4041

在线出版日期: 2012-05-23（万方平台首次上网日期，不代表论文的发表时间）