This new ultrasonic motor achieves effective card sending through standing waves and piezoelectric vibrators, suggesting innovative applications.
A new linear type ultrasonic motor using multi-beam piezoelectric vibrators is presented. The standing waves of the eighth bending mode of vibration and the first longitudinal mode of vibration are utilized to construct a card sending mechanism. Each multiple different form modes are excited in different vibrators, and then these vibrators are combined as one ultrasonic motor. These vibrators are excited electrically by using piezoelectric ceramics. Some characteristics of this ultrasonic motor, as a card sending device, are investigated. It is observed that the motor has enough power and speed as a card sending device as well as a self moving motor.
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KOSAWADA et al. (1992) studied this question.
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