| 摘要 |
A method and apparatus for exciting and controlling a switched reluctance motor having pulse duration modulated current provided to the windings of the motor. A start signal determined by a rotor position sensor, charges a capacitor. The capacitor is discharged according to an error signal that indicates the difference between a desired magnitude of a parameter, such as torque or speed, and the actual magnitude. A comparator puts out a pulse having a duration which is the same as the time that the capacitor has a charge. The pulse from the comparator turns on a switch connected to respective windings of the motor and provides a current pulse that has a duration equivalent to that of the pulse from the comparator. This sequence is repeated for all of the windings of the motor so as to maintain its speed or torque at the desired magnitude.
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