| 发明名称 | Driving apparatus and motor | ||
| 摘要 | A digital filter is configured to convert, into a digital value, the duty ratio of a control signal subjected to pulse width modulation according to a target toque to be set for a fan motor to be driven. A sampling circuit is configured to perform sampling of the output value of the digital filter at a sampling timing that is asynchronous with respect to the cycle of the control signal, so as to generate a torque instruction value. A driving circuit is configured to drive the fan motor according to the torque instruction value thus generated. | ||
| 申请公布号 | US9030146(B2) | 申请公布日期 | 2015.05.12 |
| 申请号 | US201313950816 | 申请日期 | 2013.07.25 |
| 申请人 | Rohm Co., Ltd. | 发明人 | Suzuki Toshiya;Sano Shinsuke |
| 分类号 | H02P23/00;H02P6/18 | 主分类号 | H02P23/00 |
| 代理机构 | Cantor Colburn LLP | 代理人 | Cantor Colburn LLP |
| 主权项 | 1. A driving apparatus for a fan motor, comprising: a digital filter configured to convert, into a digital value, a duty ratio of a control signal which is pulse width modulated according to a target torque to be set for a fan motor to be driven; a sampling circuit configured to perform sampling of an output value of the digital filter at a sampling timing that is asynchronous with respect to a cycle of the control signal, so as to generate a torque instruction value; and a driving circuit configured to drive the fan motor according to the torque instruction value. | ||
| 地址 | JP | ||