发明名称 |
Electrical angle detecting apparatus and method, and motor control apparatus |
摘要 |
An electrical angle detecting apparatus determines an electrical angle &thetas; from voltages Vd, Vq, and currents Id, Iq along a d-axis and a q-axis of a synchronous motor (40), by using the following expressions: <MATH> where (n-1) indicates a value of each variable at the previous timing; (n) indicates a value at the given timing; R is the resistance of a coil; t is the determination executing period; and k1, k2 are coefficients. This determination makes it easier to set appropriate gains, so that precision improves. Furthermore, the amount of determination reduces, and the processing time shortens. <IMAGE> |
申请公布号 |
EP1014554(A3) |
申请公布日期 |
2001.11.21 |
申请号 |
EP19990125099 |
申请日期 |
1999.12.16 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
KOIDE, SATOSHI;KAWABATA, YASUTOMO;YAMADA, EIJI |
分类号 |
B60L11/18;B60L15/02;H02P6/18 |
主分类号 |
B60L11/18 |
代理机构 |
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