柔軟構造物の振動制御系の設計法 : Riccati方程式の厳密解表現に基づくセンサ/アクチュエータの最適配置

概要

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This paper deals with an optimal placement problem of sensors and actuators for active vibration control of flexible structures. For undamped flexible structures with collocated sensors and actuators, each solution of two generalized algebraic Riccati equations are obtained explicitly. Using these two solutions, it is shown that the stabilizing H_∞ suboptimal controller based on the normalized left coprime factorization approach can be synthesized directly for all candidates of the placement. The sensor/actuator placement problem which optimizes other closed-loop performance can be formulated easily by applying this H_∞ controller. As a design example, a placement problem which minimizes H_2 norm of the closed loop transfer matrix using this H_∞ controller is considered for a cantilevered beam. The experimental results show the effectiveness of the sensor/actuator placement method stated in this paper.
1998-05-25