Control apparatus for vibration wave motor

Details Control apparatus for vibration wave motor Control apparatus for vibration wave motor

1997-11-12

1998-11-24

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, H02N 200

Patent

active

058412158

ABSTRACT:
A control apparatus for a vibration wave motor providing control with high precision and a wide dynamic range by switching the driving frequency signal from an amplitude variable control range to a frequency variable control range on the basis on an input value.

REFERENCES:
patent: 4812699 (1989-03-01), Ogawa et al.
patent: 5130619 (1992-07-01), Izuno
patent: 5155418 (1992-10-01), Kataoka
patent: 5214339 (1993-05-01), Naito
patent: 5459369 (1995-10-01), Mitarai et al.
European Search Report dated Sep. 15, 1997.

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