Control apparatus for vibration type actuator

Details Control apparatus for vibration type actuator Control apparatus for vibration type actuator

2006-06-13

2006-06-13

Tamai, Karl (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S316010, C310S323020, C318S114000

Reexamination Certificate

active

07061156

ABSTRACT:
The present invention relates to apparatus achieving improvement in operation characteristics in the operation of stopping or reversing the direction of or decelerating movement of a vibrating wave actuator constructed to apply an alternating voltage to an electro-mechanical energy conversion element to vibrate a vibration member to obtain a driving force. In the operation of stopping the vibrating wave actuator, it is necessary to cancel the vibration to stop the actuator, in order to stop the actuator in good response. The present invention has achieved the above object by applying an excitation signal, which excites vibration in a direction to cancel free vibration in the vibration member, to the electro-mechanical energy conversion element in the stop operation or the like.

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