| 摘要 |
PURPOSE:To prevent an insensitive band of a torque output with respect to a torque command value from generating by providing two sets of motor windings in parallel, and also providing two sets of PWM driving circuits. CONSTITUTION:An infinitesimal numeric value alpha is added by an adder 21 to a torque command Tc value, and a first command value Tca is input to a driving circuit 2a. A second command value Tcb obtained by subtracting the value alphaby a subtractor 22 from the value Tc is input to a second driving circuit 2b. PWM inverters 3a, 3b generate first and second winding currents IA, IB. The currents IA, IB are respectively applied to first and second exciting windings LA, LB provided in parallel in a servomotor 1. |
