发明名称 |
Motor drive controller and control method |
摘要 |
A motor drive controller to drive a motor, based on multiple sensors that generates multiple sensor signals corresponding to different positions of the rotor; including a first phase detector to compare a respective one of the multiple sensor signals with a paired sensor signal from the same sensor to detect phases of the rotor, and output a first phase information signal representing a first detected phase; a phase divider to divide the phases, detected by the first phase detector into multiple predetermined phase intervals; a signal selector to select one of the respective multiple sensor signals from the multiple sensors in the multiple predetermined phase interval; and a second phase detector to detect whether the signal selected by the signal selector reaches a predetermined threshold level corresponding to a predetermined phase of the rotor, and output a second phase information signal representing a second detected phase. |
申请公布号 |
US8866421(B2) |
申请公布日期 |
2014.10.21 |
申请号 |
US201213658119 |
申请日期 |
2012.10.23 |
申请人 |
Ricoh Company, Ltd. |
发明人 |
Kamatani Tomohiko;Suzuki Haruyuki;Shimizu Fumihiro;Furuse Katsuhisa |
分类号 |
H02P6/16 |
主分类号 |
H02P6/16 |
代理机构 |
Cooper & Dunham LLP |
代理人 |
Cooper & Dunham LLP |
主权项 |
1. A motor drive controller to drive and control a motor that has a rotor and multi-phase coils inside the rotor, based on multiple rotational angle detectors that generate multiple sensor signals corresponding to different positions of the rotor;
the motor drive controller comprising: a first phase detector to compare a respective one of multiple sensor signals with a paired sensor signal from the same rotational angle detector to detect phases of the rotor, and output a first phase information signal representing a first detected phase; a phase divider to divide the phases, detected by the first phase detector, into multiple predetermined phase intervals; a signal selector to select one of the respective multiple sensor signals from the multiple rotational angle detectors, in the multiple predetermined phase interval; and a second phase detector to detect whether the signal selected by the signal selector reaches a predetermined threshold level corresponding to a predetermined phase of the rotor, and output a second phase information signal representing a second detected phase different from the first detected phase. |
地址 |
Tokyo JP |