发明名称 |
Controller and control method for an electric power steering apparatus |
摘要 |
A controller controls an electric motor to provide assist power corresponding to steering operation for an electric power steering apparatus. The controller comprises a detecting device, a filtering device, a judging device and a determining device. The detecting device detects present voltage of a power source for the electric motor. The filtering device filters the present voltage based on a small time-constant when the voltage of the power source increases and based on a large time-constant when the voltage of the power source decreases. The judging device judges whether the filtered voltage is lower than a predetermined threshold. And, the determining device determines being abnormality of the power source when it is judged that the filtered voltage is lower than the threshold.
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申请公布号 |
US7016775(B2) |
申请公布日期 |
2006.03.21 |
申请号 |
US20020314984 |
申请日期 |
2002.12.10 |
申请人 |
TOYODA KOKI KABUSHIKI KAISHA |
发明人 |
IWAZAWA MASAHIDE;IWATA KIYOTAKA;ITO AKIRA;YAMADA YASUSHI |
分类号 |
A01B69/00;B62D6/00;B60T8/88;B62D5/04;B62D11/00;B62D101/00;B62D119/00;G01M17/00;G05B21/02 |
主分类号 |
A01B69/00 |
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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