发明名称 |
SENSORLESS MOTOR DRIVE DEVICE |
摘要 |
A sensorless motor drive device has: a first operation mode of generating current waveforms including non-energizing times based on a first rotor position signal generated by detecting zero crossings in windings of a motor as a signal indicating the rotor position of the motor, and supplying currents to the windings of the motor according to the current waveforms; and a second operation mode of generating current waveforms including no non-energizing time based on a second rotor position signal generated without use of zero crossings as the signal indicating the rotor position of the motor, and supplying currents to the windings of the motor according to the current waveforms. The first and second operation modes can be switched to each other. |
申请公布号 |
US2011310714(A1) |
申请公布日期 |
2011.12.22 |
申请号 |
US201113074933 |
申请日期 |
2011.03.29 |
申请人 |
IWANAGA TAISHI;WATANABE FUMIHISA;IGARASHI MASAYOSHI;NAKATSUKA MAKITO |
发明人 |
IWANAGA TAISHI;WATANABE FUMIHISA;IGARASHI MASAYOSHI;NAKATSUKA MAKITO |
分类号 |
G11B19/20;G11B7/085;H02P6/18;H02P6/20 |
主分类号 |
G11B19/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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