Invention Application
- Patent Title: MOTOR DRIVE APPARATUS FOR DRIVING STEPPING MOTOR AND CONTROL METHOD THEREFOR
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Application No.: US15439676Application Date: 2017-02-22
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Publication No.: US20170163191A1Publication Date: 2017-06-08
- Inventor: Yoshihiro Mizuo
- Applicant: CANON KABUSHIKI KAISHA
- Priority: JP2013-096522 20130501
- Main IPC: H02P8/38
- IPC: H02P8/38
Abstract:
A CPU obtains a difference between a data number at timing when an ENC0 signal or an ENC1 signal changes in a case where there is no follow-up delay of a rotor relative to a voltage signal applied to an A-phase coil and a B-phase coil and a data number at timing when the ENC0 signal or the ENC1 signal changes in a case where there is a follow-up delay of the rotor relative to the voltage signal applied to the A-phase coil and the B-phase coil. Then, the CPU controls the voltage signal applied to the A-phase coil and the B-phase coil based on the obtained difference.
Public/Granted literature
- US09762159B2 Motor drive apparatus for driving stepping motor and control method therefor Public/Granted day:2017-09-12
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