| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an operation controller of a motor in which a peak current is reduced by a specified physical quantity at the time of a low speed or an overload. <P>SOLUTION: A motor driver comprising a DC-AC converting means 2 for delivering a false AC voltage to a brushless DC motor 1, a means 5 for detecting an induction voltage of the motor 1, a PWM control means 3 for controlling a switching element of the DC-AC converting means 2 is further provided with a means for detecting a DC current of an inverter circuit for driving the motor 1 and setting a torque gain such that the peak current level of the motor is not higher than a specified level. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
