MOTOR DRIVING NOISE REDUCING EQUIPMENT AND GENERATING METHOD FOR MOTOR DRIVING NOISE REDUCING SIGNAL

PROBLEM TO BE SOLVED: To overcome a problem wherein torque largely fluctuates due to abrupt change in current when a rectangular-wave current is passed through the winding in each phase of a motor, and to cope with this, a continuously changing current is passed through the winding in each phase of the motor even when phases are switched; however, the phases are short-circuited with one another and a current is not passed through even though it must be. SOLUTION: Motor driving noise reducing equipment is provided with a selection circuit which selects a signal for increasing current or a signal for decreasing current based on a commutation control signal; and a signal combination circuit which combines the signal for increasing current or the signal, for decreasing current selected through the selection circuit with an energization control signal supplied to the power supply-side switching element of a pair of switching elements.