著者

裘 進浩 原口 正和 吉田 誠 谷 順二

出版者

一般社団法人 日本機械学会

雑誌

Dynamics & Design Conference 2003 (ISSN:24242993)

巻号頁・発行日

pp._604-1_-_604-6_, 2003-09-16 (Released:2017-06-19)

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This paper describes a study of active noise isolation using an advanced composite board with embedded piezoelectric elements, which are used as both sensors and actuators. The identification system, which estimates the radiated sound from the voltage signals of the piezoelectric elements in the smart board, was constructed based on Rayleigh's integral formula so that no external microphone is needed for noise control. Since the control system was implemented to minimize the estimated value of noise by suppressing the vibration of the smart board, it can reduce the sound transmission through the board. The technique of self-sensing actuator was also used to reduce the number of piezoelectric need for the control. Experiments were performed and the results showed that the transmitted noise level was successfully reduced at several resonant peaks.

著者

原口 正和 吉田 誠 裘 進浩 谷 順二

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集 : JSME annual meeting

巻号頁・発行日

vol.2003, no.6, pp.63-64, 2003-08-05

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This paper describes the vibration control of a plate using a piezoelectric element as a self-sensing actuator. By using self-sensing actuator techniques, one piezoelectric element, which is bonded on the face of the plate, gets the information of the vibration of the plate, and produces control input simultaneously. The control input signal is generated by the adaptive control system with the filtered-X LMS algorithm. Experimental investigations are performed and the results show that the vibration level is successfully reduced at a broad frequency band.