Controller for a vibration wave motor

Details Controller for a vibration wave motor Controller for a vibration wave motor

1995-06-07

1996-03-19

Budd, Mark O.

Electricity: motive power systems

Nonmagnetic motor

316316, H01L 4108

Patent

active

055005780

ABSTRACT:
In a vibration motor for driving a movable member contacted to a vibration member by a travelling vibration wave generated by the vibration member by applying a periodic voltage to an electrostrictive element contacted to the vibration member, a frequency of the periodic voltage is sequentially changed, a drive speed of the movable member is measured at each frequency, the measurements are sequentially compared, a frequency which results in the largest measurement is stored, and the movable member is driven by the periodic voltage of the stored frequency.

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