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A New Linear Oscillatory Actuator with Variable Characteristics Using Two Sets of Coils
Fumiya Kitayama1, Katsuhiro Hirata2, Noboru Niguchi3
1Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan. fumiya.kitayama@ams.eng.osaka-u.ac.jp.
Sensors (Basel, Switzerland)
|March 22, 2016
Summary
This study introduces a novel electromagnetic linear oscillatory actuator with two coils, enhancing vibration control. The new design achieves larger vibrations and higher thrust across a wider frequency range using switchable coil connections.
Area of Science:
- Engineering
- Physics
- Materials Science
Background:
- Electromagnetic linear oscillatory actuators are crucial for vibration control due to their high controllability.
- A key limitation is reduced thrust and vibration across a broad range of drive frequencies.
Purpose of the Study:
- To develop an improved linear oscillatory actuator addressing limitations in thrust and vibration.
- To enhance actuator performance by enabling easy modification of its characteristics.
Main Methods:
- A novel linear oscillatory actuator design utilizing two sets of coils was proposed.
- Finite element analysis (FEA) was employed to simulate and evaluate actuator performance.
- Coil connections were switched between series and parallel configurations.
Main Results:
- FEA revealed large vibrations at 100 Hz in series connection.
- Parallel connection demonstrated large vibrations and high thrust at 70 Hz and 140 Hz.
- The actuator exhibited distinct characteristics based on coil connection.
Conclusions:
- The proposed actuator design successfully provides dual operating characteristics through switchable coil connections.
- This design enables generation of high thrust and large vibrations with reduced current over a wide frequency range.
- The switchable coil configuration offers a versatile solution for advanced vibration control applications.
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