- 专利标题： MOTOR CONNECTION DETECTING DEVICE, MOTOR CONNECTION DETECTING METHOD, IMAGE FORMING DEVICE, AND CONVEYANCE DEVICE
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申请号： US15428269申请日： 2017-02-09
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公开(公告)号： US20170255152A1公开(公告)日： 2017-09-07
- 发明人: Hiroshi OKAMURA , Tomohide KONDOH , Hayato FUJITA
- 申请人： Hiroshi OKAMURA , Tomohide KONDOH , Hayato FUJITA
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 优先权： JP2016-040407 20160302
- 主分类号： G03G15/00
- IPC分类号： G03G15/00 ; H02P8/12 ; H02P8/36
摘要：
A motor connection detecting device includes: a bipolar stepping motor; a motor driver adapted to control current to be supplied to the bipolar stepping motor; and a controller connected to the bipolar stepping motor and the motor driver. The controller detects voltage of regenerative current generated during motor ON time in which current flows in the bipolar stepping motor, and determines abnormal connection of the bipolar stepping motor. The detected voltage is voltage generated during a fast decay period according to a current attenuation method of the regenerative current.
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