发明名称 Voice coil motor control device and method of driving the same, image pickup device
摘要 The present invention provides a control device capable of improving hysteresis characteristics of a voice coil motor (31) and attaining a suitable lens position without complicating the structure of the control device. As solving means of the invention, a voice coil motor control device (30) includes a driving current control part (34) that controls a driving current supplied to the voice coil motor (31) in accordance with a driving pulse subjected to pulse width modulation, and a driving pulse control part (32) that divides a drive period of the voice coil motor (31) into a movement period and a holding period, and controls the driving pulse by changing the duty ratio of the driving pulse during the movement period in accordance with a duty setting value and fixing the duty ratio of the driving pulse during the holding period to the duty setting value.
申请公布号 US7760442(B2) 申请公布日期 2010.07.20
申请号 US20050666945 申请日期 2005.10.25
申请人 MITSUBISHI ELECTRIC CORPORATION 发明人 ISHIDA KOZO;MICHIMORI ATSUSHI;KOMORI NORIYUKI;KUNISHIO HIDEKI;SUGIURA HIROAKI;ITOW TAKASHI;KUNO TETSUYA
分类号 G02B15/14;G02B7/02 主分类号 G02B15/14
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