| 摘要 |
PURPOSE:To suppress the speed or current of a DC motor when a load torque abruptly changes by correcting the deviation between the assumed load torque value and the torque generated from the motor and the current command value on the bases of the assumed load torque value. CONSTITUTION:A status converter 2 calculates by a field simulator 22 and a motor simulator 23 a motor generating torque M and an assumed speed value n'. The value n' is subtracted at the addition point P0 by the actual speed value n, the difference is applied to proportional elements 24, 25 and an integrator 26, and assumed load torque value tau'L is calculated. The addition point P4 calculates [tau'L+(tau'L-tauM)], and a field simulator 28 calculates the current value i'al corresponding to the load torque on the basis of the calculated result. The output (v) of a speed controller 11 and the current value i'al are added, and supplied as the current command value i*a to a current regulator 12. |
