Vibratory driving device

Details Vibratory driving device Vibratory driving device

2011-06-21

2011-06-21

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With support

C359S823000, C359S694000

Reexamination Certificate

active

07965457

ABSTRACT:
A vibratory driving device1comprising a shaft-like driving member7, a electromechanical transducer6which can incline the driving member7and which can also displace the driving member7in the axial direction of the driving member, a movable member8which slidably engages on the driving member7, a driving circuit3which can apply to the electromechanical transducer6a periodical frictional driving voltage to displace slidingly the movable member with respect to the driving member and an inclination driving voltage inclining the driving member, a waveform determiner4which determines a rising condition of a voltage or a current of the electromechanical transducer6when the inclination driving voltage is applied, and a position estimator which estimates a position of the movable member8based on the rising condition of a voltage or a current.

REFERENCES:
patent: 6111336 (2000-08-01), Yoshida et al.
patent: 7531941 (2009-05-01), Manabe
patent: 2005-284169 (2005-10-01), None
patent: 2006-113874 (2006-04-01), None

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