发明名称 |
Method and apparatus for electric motor torque monitoring |
摘要 |
Methods and apparatus are provided for monitoring an achieved motor torque produced by an electric motor. The method includes determining the achieved motor torque based on a rotor position of the electric motor and a phase current of the electric motor when the motor speed is not greater than a first pre-determined threshold, determining the achieved motor torque based on a loss-compensated power supplied to the electric motor when the motor speed is greater than the first pre-determined threshold, comparing the achieved motor torque with the torque command, and indicating a fault when the achieved motor torque is not within a pre-determined margin of the torque command.
|
申请公布号 |
US7755310(B2) |
申请公布日期 |
2010.07.13 |
申请号 |
US20070853113 |
申请日期 |
2007.09.11 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
WEST STEPHEN T.;WANG WEI D.;GLEASON SEAN E |
分类号 |
H02P21/00 |
主分类号 |
H02P21/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|