| 摘要 |
<P>PROBLEM TO BE SOLVED: To control drive of a motor by selecting the number of command motor revolutions and command torque. <P>SOLUTION: A motor controller selectively executes control of the number of revolutions by the number of command motor revolutions and control of torque by the command torque. When the motor is driven at a predetermined number of revolutions, in the control of the number of revolutions, a first torque current is calculated on the basis of the input number of command motor revolutions to control drive according to the operated first torque current. When the motor is driven at a fixed torque, in he control of the torque, a second torque current is calculated on the basis of the input command torque to control the drive according to the operated second torque current. The controller operates an applied voltage on the basis of a field current according to the detected number of revolutions of the motor so as to reduce counter-electromotive force which occurs when the motor rotates. <P>COPYRIGHT: (C)2010,JPO&INPIT |
