VIBRATION CONTROL OF A SPACE TRUSS STRUCTURE WITH A PIEZOELECTRIC ACTIVE MEMBER

作     者：李俊宝 张令弥 

作者机构：西安交通大学机械结构强度与振动国家重点实验室西安710049 南京航空航天大学振动工程研究所南京210016 

基　　金：国家自然科学基金 博士后基金 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：1997年第14卷第2期

页      码：177-185页

摘      要：Active vibration control is an effective way of increasing robustness of the design to meet the stringent accuracy requirements for space structures. This paper presents the results of active damping realized by a piezoelectric active member to control the vibration of a four-bay four-longern aluminum truss structure with cantilever boundary. The active member, which utilizes a piezoelectric actuating unit and an integrated load cell, is designed for vibration control of the space truss structures. Active damping control is realized using direct velocity feedback around the active member. The placement of the active member as one of the most important factor of affecting the control system performance, is also investigated by modal dissipation energy ratio as indicator. The active damping effectiveness is evaluated by comparing the closed-loop response with the open loop response.

主 题 词：vibration trusses active damping control piezoelectric active member optimal placement truss structure 

学科分类：12[管理学] 083002[083002] 1204[管理学-公共管理类] 0830[工学-生物工程类] 120402[120402] 08[工学] 0837[0837] 

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