发明名称 |
Motor control device, motor control method, and image forming apparatus |
摘要 |
A motor control device supplies a drive control signal to a drive circuit that drives a motor at a constant period using a motor drive signal based on the drive control signal, and shuts off the motor drive signal when a count value counted by a counter that reset the count value if a state of the motor changes exceeds a threshold corresponding to a plurality of driving periods of the motor. The motor control device includes: a control unit that controls a setting unit to set a rotational direction of the motor to a first rotational direction and a second rotational direction reverse to the first rotational direction at the constant period alternately, when a drive mode of the motor is a position holding mode to drive the motor so as to hold a rotational position of the motor. |
申请公布号 |
US9093935(B2) |
申请公布日期 |
2015.07.28 |
申请号 |
US201313965561 |
申请日期 |
2013.08.13 |
申请人 |
RICOH COMPANY, LIMITED |
发明人 |
Ishizuka Natsuko;Murata Takuya;Kiguchi Hiroyuki;Seki Takeo |
分类号 |
H02P1/04;H02P6/08;H02P6/00;H02P3/02;B41J19/00 |
主分类号 |
H02P1/04 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A motor control device that supplies a drive control signal to a drive circuit that drives a motor at a constant period using a motor drive signal based on the drive control signal used to generate torque on the motor, and shuts off the motor drive signal to the motor when a count value counted by a counter that counts the count value at a predetermined interval and resets the count value if a state of the motor changes exceeds a threshold corresponding to the count value for a plurality of driving periods of the motor, the motor control device comprising:
a setting unit that sets a rotational direction of the motor driven under control at the constant period; a control unit that controls the setting unit to set the rotational direction of the motor to a first rotational direction and a second rotational direction reverse to the first rotational direction at the constant period alternately, when a drive mode of the motor is a position holding mode to drive the motor so as to hold a rotational position of the motor; and a generating unit that generates the drive control signal. |
地址 |
Tokyo JP |