| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a controller of a switched reluctance motor robust in the change of a wire wound resistor without using a position sensor. <P>SOLUTION: The controller of the switched reluctance motor includes a current differentiation detector 7 which assumes adjacent periods T1 and T2, and which outputs an average rate of change DI1 to the time of the T1 duration of the current of the wire winding of one phase of the switched reluctance motor 1, and an average rate of change DI2 to the time of the T2 duration; an average voltage detector 6 which outputs the average value V1 of the T1 period and the average value V2 of the T2 period of the voltage applied to the winding, an inductance arithmetic unit 8 which obtains the inductance of the winding by dividing the difference of the V1 and the V2 by the difference of the DI1 and the DI2; and a position estimator 9 which inputs the output of the inductance arithmetic unit and the current value of the winding and which estimates the rotor position of the switched reluctance motor. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
