Title:
VIBRATION-TYPE DRIVE APPARATUS, AND CONTROL METHOD FOR VIBRATION-TYPE DRIVE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/048948
Kind Code:
A1
Abstract:
A drive apparatus (1) provided comprises: an electromechanical transducer element (7) wherein mechanical displacement will occur when a voltage is applied thereto, a drive member (8) that is moved by the electromechanical transducer element (7), a moving member (9) that engages with the drive member (8) so as to be able to make a slipping displacement relative to the same, regulating members (10, 11) for limiting the movement of the moving member (9) by coming into contact with the moving member (9), a drive circuit (3) for applying a cyclical drive voltage to the electromechanical transducer element (7), a detecting circuit (4) for detecting the impedance of the electromechanical transducer element (7), and an evaluating means (5) for determining that the moving member (9) is in contact with one of the regulating members (10, 11) when the value detected by the detecting circuit (4) is not less than a prescribed value.
Inventors:
YOSHIDA RYUICHI (JP)
SHINKE SATOSHI (JP)
SHINKE SATOSHI (JP)
Application Number:
PCT/JP2010/067534
Publication Date:
April 28, 2011
Filing Date:
October 06, 2010
Export Citation:
Assignee:
KONICA MINOLTA OPTO INC (JP)
YOSHIDA RYUICHI (JP)
SHINKE SATOSHI (JP)
YOSHIDA RYUICHI (JP)
SHINKE SATOSHI (JP)
International Classes:
H02N2/00; G05D3/00; G05D3/12; H01L41/09; H01L41/18; H01L41/187
Foreign References:
| JP2009131134A | 2009-06-11 | |||
| JP2001345352A | 2001-12-14 |
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