単一制御力による1軸偏心構造物のアクティブ振動制御

概要

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The active vibration control of a linear structure with uniaxial eccentricity is presented. The 2DOF objective structure is actively controlled by the only one control force under an earthquake excitation. Based on the pole assignment method, the state feedback control law is represented in a closed form as a function of the modulus of eccentricity, the spring radius ratio, the location of the controller, and the damping factors as the control target. Uncontrollability means that a participation factor for a control force is zero at the center of torsion in each vibration mode. Velocity-feedback control could only reduce the vibration in either the lateral or torsional direction, though the control aims to increase the damping of the structure. The sign of the feedback gains changes at the centers of torsion as the location of the controller moves. The inefficient control is indicated by the values of the gains increasing near the centers of torsion. The resonance curve shows the optimal location of the controller for simultaneously reducing vibrations in both directions by the only one control force.
社団法人日本建築学会の論文
1994-08-30