| 摘要 |
PROBLEM TO BE SOLVED: To improve nonconformity of the inherent starting characteristic of a three-phase switched reluctance motor, by returning arithmetic processing of position sensor signals in a decoding logic circuit to normal so as to be normal revolution, after rotating the rotor in the reverse direction. SOLUTION: A starting command is inputted to a decoding logic circuit (S101), and whether or not the output of each position sensor remains unchanged for a constant time or more is confirmed (S102). And if it does not change, the polarities of position sensor signals in the decoding logic circuit are changed simultaneously so as to excite phases for generating reverse torque, and the direction of rotation of the motor is reversed (S103). Moreover, torque lowering is detected by the change of position sensor outputs (S104). And the polarities of the position sensor signals are returned to original ones so as to excite phases for generating forward torque, and arithmetic processing is performed so as to return motor rotation to the forward direction. |
