| 发明名称 | Control device, driving device, and image forming apparatus | ||
| 摘要 | A control device includes a motor driving unit that supplies electric power to a motor according to a magnetic-pole-phase signal output from the motor; and a rotational-position detecting unit that converts the magnetic-pole-phase signal into a rotational-position detection signal and outputs the rotational-position detection signal. The rotational-position detection signal indicates a rotation amount and a rotation direction of an output shaft of the motor and has a higher resolution than the magnetic-pole-phase signal. | ||
| 申请公布号 | US9294021(B2) | 申请公布日期 | 2016.03.22 |
| 申请号 | US201414290087 | 申请日期 | 2014.05.29 |
| 申请人 | RICOH COMPANY, LIMITED | 发明人 | Murata Takuya |
| 分类号 | H02P6/18;H02P6/16;H02P7/29;H02P21/14 | 主分类号 | H02P6/18 |
| 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 control device, comprising: a motor driving unit that supplies electric power to a motor according to a magnetic-pole-phase signal output from the motor; and a rotational-position detecting unit that converts the magnetic-pole-phase signal into a rotational-position detection signal and outputs the rotational-position detection signal, the rotational-position detection signal indicating a rotation amount and a rotation direction of an output shaft of the motor and having a higher resolution than the magnetic-pole-phase signal, wherein the rotational-position detection signal is a two-channel signal, with a fixed phase difference, an output of which varies depending on a rotation angle of the output shaft of the motor. | ||
| 地址 | Tokyo JP | ||