Drive circuit for ultrasonic motors

Details Drive circuit for ultrasonic motors Drive circuit for ultrasonic motors

1991-02-28

1993-01-12

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, 318116, H01L 4108

Patent

active

051793113

ABSTRACT:
A drive circuit for an ultrasonic motor, which comprises a stator for generating a progressive oscillatory wave to an elastic element with the drive of a piezoelectric element and a moving element to be pressurized by the stator and driven with the progressive oscillatory wave, comprises an inductive element which is inserted between a power source and an input of the ultrasonic motor, and a switching element which is connected between one end of said inductive element connected to said input and a ground, and performs switching with a drive frequency of said ultrasonic motor.

REFERENCES:
patent: 3271644 (1966-09-01), McShane
patent: 3683212 (1972-09-01), Zoltan
patent: 3989963 (1976-11-01), Giaccardi
patent: 4228440 (1980-10-01), Horike et al.
patent: 4249100 (1981-02-01), Vasiliev et al.
patent: 4510411 (1985-04-01), Hakamata et al.
patent: 4595854 (1986-06-01), Yano et al.
patent: 4767959 (1988-08-01), Sakakibara et al.
patent: 4866326 (1989-09-01), Niikawa et al.
patent: 4947074 (1990-08-01), Suzuki
Nikkei Mechanical, Feb. 28, 1983, pp. 44-49.

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