知的複合構造体による遮音の能動制御 : ロバストフィードバック制御(機械力学,計測,自動制御)

概要

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This paper describes an active control of sound transmission in intelligent compound structure. The structure, dimension of which is 160 mm×38 mm, consists of PZT bi-morph piezoelectric plate of 0.6 mm thickness and two sheets of stainless steel plate of 0.1 mm thickness. In the piezoelectric plate, each of three portions of electric pole is formed for functioning as actuator and sensor, respectively. The active control aims reducing bending vibration in the structure for the two natural modes at 210 Hz and 830 Hz, then the Internal ModeI Control and the robust H-infinity control are constructed. The latter control proved satisfactory control performance to reduce the level of vibration amplitude of the sensor signals by about 15 dB.
一般社団法人日本機械学会の論文
2003-02-25