並立弾性構造物の地震応答制御に関する基礎的研究

概要

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This paper proposes a active vibration control method for flexible structures arranged in parallel under large earthquake motions. In this method, actuators are placed between a pair of structures to control the undesirable system response due to strong wind and earthquake motions. The relative displacement of base point and the control sensing points are effectively used to device control law. We also propose a modeling method for making a multi degree of freedom model using the uncontrollability and unobservability to prevent spilllover which invites serious problem in the active control. In this paper, the reduced order model of control objects expressed by 3DOF system for controlling the vibration of first, second and third bending modes is constructed. In order to obtain the robustness, the control scheme is constructed by the use of the filtered suboptimal control technique combined into LQ control theory. Effectiveness of the control schemes is demonstrated by the seismic response control of a pair of flexible structures.
1997-12-25