永久磁石発泡ウレタンエラストマーの速度センサーへの応用

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  • Application of Energy Harvesting and Velocity Sensor Using Permanent Magnet Urethane Elastomers

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<p>　A new polyurethane foam that has the properties of permanent magnet, a permanent magnet urethane foam elastomer, has been developed. Since the surrounding magnetic field distribution changes because of the change in the internal neodymium particles’ arrangement due to the deformation of the urethane foam elastomer, it is possible to use it for vibration power generation. Since the induced electromotive force depends on the deformation velocity according to Faraday’s law, the permanent magnet urethane foam elastomer can be sued for a velocity sensor. In this study, a permanent magnet polyurethane foam elastomer was placed in a coil and the relationship between the deformation velocity and induced electromotive force under repeated compression deformation was investigated experimentally. The waveform and topology of the deformation velocity and induced electromotive force were generally consistent and it is shown that it is possible to estimate the deformation velocity from the induced electromotive force.</p>

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