著者

浅井,保至

出版者

日本AEM学会

雑誌

日本AEM学会誌

巻号頁・発行日

vol.19, no.1, 2011-03-10

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Linear resonant actuators (LRAs) have been used in wide range of application because they can reciprocate in comparatively short stroke in spite of their compact size and lightweight. However, the amplitude of LRAs severely decreases in response to an external load. This paper proposes a control method to maintain constant amplitude against an external load by adopting the PID control in the PWM feedback control by the back-EMF detecting from the coil. The effectiveness of this method was clarified by both 3-D finite element analysis and the measurement.