A study on shunt damping performance, current servo response, and energy harvesting analysis for voice coil motors

Kazuya Hirasawa; Kentaro Takagi; Tsuyoshi Inoue

doi:10.1117/12.2584354

22 March 2021 A study on shunt damping performance, current servo response, and energy harvesting analysis for voice coil motors

Kazuya Hirasawa, Kentaro Takagi, Tsuyoshi Inoue

Author Affiliations +

Proceedings Volume 11590, Nano-, Bio-, Info-Tech Sensors and Wearable Systems; 115900Z (2021) https://doi.org/10.1117/12.2584354
Event: SPIE Smart Structures + Nondestructive Evaluation, 2021, Online Only

Conference Poster

Abstract

Electromagnetic shunt damping is a sensorless vibration control method that uses a single voice coil motor (VCM) and may also be used for energy harvesting. If an amplifier is used to control the current of a VCM, the current control law has the same function as a shunt circuit. In this paper, we focus on a current-controlled VCM and propose a new method that analyzes not only the performance of conventional shunt vibration control but also the energy consumption and the servo performance of current. From a numerical example, it was clarified that the energy was consumed without being regenerated if the PI gain with the maximum damping effect was used. There is a trade-off between the damping effect and energy regeneration.

Conference Presentation

Citation Download Citation

Kazuya Hirasawa, Kentaro Takagi, and Tsuyoshi Inoue "A study on shunt damping performance, current servo response, and energy harvesting analysis for voice coil motors", Proc. SPIE 11590, Nano-, Bio-, Info-Tech Sensors and Wearable Systems, 115900Z (22 March 2021); https://doi.org/10.1117/12.2584354

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