Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

1997-10-15

1998-10-13

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310316, 310323, 310328, H02N 200

Patent

active

058216677

ABSTRACT:
An ultrasonic motor has a vibrator for vibrating with a first vibration mode and a second vibration mode for vibration in a direction different from that of the first vibration mode; a relatively movable member for executing relative vibration in accordance with the vibration of the vibrator; and a drive control device for controlling the vibrator within a range higher than, among resonance frequencies of the first and second vibration modes, a higher resonance frequency.

REFERENCES:
patent: 4663556 (1987-05-01), Kumada
patent: 4743788 (1988-05-01), Takagi et al.
patent: 4812697 (1989-03-01), Mishiro
patent: 4833358 (1989-05-01), Suzuki et al.
patent: 4914337 (1990-04-01), Takagi
patent: 4965482 (1990-10-01), Ohnishi et al.
patent: 5061882 (1991-10-01), Takagi
patent: 5073739 (1991-12-01), Iijima et al.
patent: 5159253 (1992-10-01), Shimizu et al.
patent: 5162708 (1992-11-01), Naito et al.
patent: 5173631 (1992-12-01), Suganuma
patent: 5200665 (1993-04-01), Iijima
patent: 5448128 (1995-09-01), Endo et al.
U.S. Application No. 08/391,565, Tadao Takagi et al. Filed Feb. 21; 1995 Assignee Nikon Corportion.
Piezoelectric Linear Motors for Application to Driving a Light Pick-up Element, papers of Lecture V of Dynamics Symposium Associated with Electromagnetic Force, Jun. 9, 1993, all page.
Ultrasonic Motors Theory and Applications, Clarendon Press, Oxford, 1993, all pages.

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