发明名称 |
Brushless DC motor torque control |
摘要 |
A control operates a permanent magnet brushless DC motor utilizing a phase advance signal to control motor torque. Input signals to the motor comprise a phase advance command signal and rotor position signals. The control provides switching signals to drive an inverter switch circuit to energize the motor. A start circuit is responsive to an analog rotor position signal and develops switching signals according to a preselected pattern stored in a memory. A run circuit compares a periodic sawtooth signal representing motor speed and a maximum desired phase advance, to a phase advance command signal to develop switching signals. The control switches from the start circuit to the run circuit at a preselected speed.
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申请公布号 |
US4835448(A) |
申请公布日期 |
1989.05.30 |
申请号 |
US19870138204 |
申请日期 |
1987.12.28 |
申请人 |
SUNDSTRAND CORPORATION |
发明人 |
DISHNER, BRYAN W.;DHYANCHAND, P. JOHN |
分类号 |
H02P6/08 |
主分类号 |
H02P6/08 |
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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