737 宇宙構造物の振動制御のための基礎研究  [in Japanese] Fundamental Research on Vibration Control for Space Structures  [in Japanese]

This paper deals with active vibration control of parallel flexible structures supported with a rigid-body rotor like a space station. One of the authors had presented a vibration control mechanism, so that it is two or more structures are connected with actuators. In this case, one structure is utilized as a reaction wall to control another structure. However, in such a mechanism, the control performance reduces as the natural frequencies of structures become closer. In this report, authors present a modified mechanism that actuators are connected to the structures with long arms so that the direction of vibration in a mode differs on each structure. In this way, it is possible to control both structures effectively, even if dynamic properties of structures are identical. Computer simulation and and control experiment are carried out and the effectiveness of presented mechanism is confirmed.