圧電アクチュエータによるCFRP構造の振動制御(J02-2 シェル先端アプリケーション,J02 シェル構造の計算力学と先端アプリケーション)

概要

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This paper presents a technique of vibration control of CFRP structures based on the modal sensor and the modal actuator, using accelerometers as sensors and PZT elements as actuators. In order to suppress the vibration of large-scale flexible structures, a high precise measurement of vibration and also an efficient control are indispensable. In a design of modal sensor, accelerometers are placed on the optimal locations based on the minimization criterion of the observation spillover. A location of PZT actuators is also optimized based on the minimization criterion of control spillover, and further the control gain is determined by LQR control theory to consider both a state cost and a control cost. Experimental results using a cantilevered CFRP laminated plate demonstrate the validity of the proposed modal sensors/actuators as a foundation of CFRP structures such as shell structures.
一般社団法人日本機械学会の論文
2004-09-04