Electricity: motive power systems – Nonmagnetic motor
Patent
1991-08-29
1992-09-08
Budd, Mark O.
Electricity: motive power systems
Nonmagnetic motor
310316, H01L 4108
Patent
active
051461439
ABSTRACT:
In a vibration wave motor, during the actuation of the vibration wave motor during which a detection signal from a vibration detecting electro-mechanical energy converting element is unstable or when the driving voltage is low, driving is effected in the open loop mode which does not use the detection signal, and when the detection signal is stable, driving is effected in the mode which uses the detection signal, i.e., the PLL control mode.
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Budd Mark O.
Canon Kabushiki Kaisha
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