Invention Grant
- Patent Title: Motor control device and method
- Patent Title (中): 电机控制装置及方法
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Application No.: US11492919Application Date: 2006-07-26
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Publication No.: US07443132B2Publication Date: 2008-10-28
- Inventor: Yasuhiko Yoshihisa , Hitoshi Igarashi
- Applicant: Yasuhiko Yoshihisa , Hitoshi Igarashi
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2005-218541 20050728; JP2005-218559 20050728
- Main IPC: H02P5/00
- IPC: H02P5/00 ; G05B19/40

Abstract:
A motor control device for controlling rotation of a motor by controlling a driving voltage applied to the motor is provided. The device includes a driving voltage control unit configured to control the driving voltage, and a detecting unit configured to detect rotation of the motor. The motor has operating characteristics indicative of relationship between the driving voltage and a rotation speed of the motor, where the operating characteristics have a specific dead-band range of driving voltages wherein the rotation speed of the motor is zero regardless of changes in the driving voltage. The driving voltage control unit performs a low rotation control operation including at least one alternating repetition of a first control operation and a second control operation. The first control operation adjusts the driving voltage to have a value outside of the dead-band range from a value within the dead-band range, while the second control operation adjusts the driving voltage to have the value within the dead-band range from the value outside of the dead-band range. The second control operation is performed after a specific first amount of motor rotation has been detected in the first control operation.
Public/Granted literature
- US20070024221A1 Motor control device and motor control method Public/Granted day:2007-02-01
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