VIBRATION-TYPE DRIVE APPARATUS, AND CONTROL METHOD FOR VIBRATION-TYPE DRIVE APPARATUS

WIPO Patent Application WO/2011/048948

A1

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.

YOSHIDA Ryuichi (Inc. 2970, Ishikawa-machi, Hachioji-sh, Tokyo 05, 〒1928505, JP)
吉田　龍一 (〒05 東京都八王子市石川町２９７０番地コニカミノルタオプト株式会社内 Tokyo, 〒1928505, JP)

JP2010/067534

April 28, 2011

October 06, 2010

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Konica Minolta Opto, Inc. (2970, Ishikawa-machi Hachioji-sh, Tokyo 05, 〒1928505, JP)
コニカミノルタオプト株式会社 (〒05 東京都八王子市石川町２９７０番地 Tokyo, 〒1928505, JP)
YOSHIDA Ryuichi (Inc. 2970, Ishikawa-machi, Hachioji-sh, Tokyo 05, 〒1928505, JP)

H02N2/00; G05D3/00; G05D3/12; H01L41/09; H01L41/18; H01L41/187; H01L41/22

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