Electricity: motive power systems – Nonmagnetic motor
Patent
1989-10-25
1992-03-31
Budd, Mark O.
Electricity: motive power systems
Nonmagnetic motor
310316, 310317, H01L 4108
Patent
active
051011441
ABSTRACT:
An ultrasonic motor driving circuit for driving an ultrasonic motor of the type wherein a progressive wave or standing wave is excited on the surface of a flexible member by applying a frequency voltage to a piezoelectric element of an oscillation member and drives a moving member which is brought into pressure contact with the oscillation member, the driving circuit comprising a register for converting a current flowing through the piezoelectric device to a voltage signal, reference voltage generator for generating a reference potential for rectification and amplification, rectifying amplifier connected to the register for rectifying and amplifying the voltage signal, voltage control type oscillator for generating a frequency signal in accordance with the output of the rectifying amplifier, frequency divider for frequency-dividing the output signal of the oscillator, phase distributor for advancing or delaying phase of the signal of the frequency divider, and booster connected to the phase distributor for amplifying signals of the phase distributor to apply them to the piezoelectric element of the ultrasonic motor.
REFERENCES:
patent: 4468581 (1984-08-01), Okada et al.
patent: 4692649 (1987-09-01), Izukawa et al.
patent: 4743788 (1988-05-01), Takagi et al.
patent: 4833358 (1989-05-01), Suzuki et al.
patent: 4888514 (1989-12-01), Takahashi et al.
patent: 4914337 (1990-04-01), Takagi et al.
patent: 4926084 (1990-05-01), Furutsu et al.
Patent Abstracts of Japan, vol. 13, No. 68 (E-716) [3416] Feb. 16, 1989.
Patent Abstracts of Japan, vol. 13, No. 518 (E-848) [3866] Nov. 20, 1989.
Patent Abstracts of Japan, vol. 13, No. 564 (E-860) [3912] Dec. 14, 1989.
Adams Bruce L.
Budd Mark O.
Seiko Instruments Inc.
Wilks Van C.
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