发明名称 |
RECOVERY OF CALIBRATED CENTER STEERING POSITION AFTER LOSS OF BATTERY POWER |
摘要 |
The steering angle of a vehicle is monitored using position sensors of an electric motor of an electric power assisted steering (EPAS) system. A position of the electric motor corresponding to the straight-ahead, center position of the steering system is stored in non-volatile memory during a steering calibration procedure, such as an end-of-line calibration in a vehicle assembly plant. Following power loss due to a dead battery, a steering angle zeroing procedure performed in a vehicle stability control (VSC) system generates a center position with enough accuracy to be within one electrical cycle of the motor. The pre-stored electric motor position is then used to determine the electrical cycle where the center position was located, and accurate monitoring of steering angle is resumed. |
申请公布号 |
WO2006137991(A1) |
申请公布日期 |
2006.12.28 |
申请号 |
WO2006US17295 |
申请日期 |
2006.05.02 |
申请人 |
TRW AUTOMOTIVE U.S. LLC;LU, ENGELBERT;MCLAUGHLIN, KEVIN |
发明人 |
LU, ENGELBERT;MCLAUGHLIN, KEVIN |
分类号 |
B62D15/02 |
主分类号 |
B62D15/02 |
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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