Ultrasonic motor using rectangular wave

Details Ultrasonic motor using rectangular wave Ultrasonic motor using rectangular wave

1990-12-19

1992-04-21

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310316, 310323, H01L 4108

Patent

active

051071622

ABSTRACT:
An ultrasonic wave motor includes an elastic member, a movable member, a first electrical/mechanical energy converting member for applying to the elastic member a vibration in a moving direction of the movable member, a second electrical/mechanical energy converting member interposed between the elastic member and the movable member for applying to the movable member a vibration in a floating direction of the movable member, and a driving source for applying a rectangular wave excitation signal to the second electrical/mechanical energy converting member. With this construction, slippage between the movable member and the second electrical/mechanical energy converting member can be eliminated to thereby achieve efficient transmission of energy.

REFERENCES:
patent: 4933590 (1990-06-01), Inoue et al.
Japanese Journal of Applied Physics, vol. 28 (1989) Supplement 28-1, pp. 3-6.

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