1A1-C12 高効率化のための低摺動リニア超音波モータの開発

概要

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We suggest the method to reduce the slippage between stator and slider of a linear ultrasonic motor. Ultrasonic motors have problem of low efficiency with friction contact and short life by abrasion. This study makes the vibration on stator's surface "constant tangential velocity while the stator is in contact with the slider" by adding another vibration whose frequency is three times higher compared with basic vibration. Considering to combine plural vibration mode, I turned up that it is the best to combine the first and the third vibration in order to reduce fluctuation in the tangential velocity of stator surface while the stator contacts the slider. Contact with reduced slippage should raise efficiency of an ultrasonic motor. This also means small abrasion of stator and slider to prolong the available period.
一般社団法人日本機械学会の論文