Motor controller and motor control method

Details Motor controller and motor control method Motor controller and motor control method

2006-02-08

2010-06-08

Ip, Paul (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S609000, C318S610000, C388S800000

Reexamination Certificate

active

07733047

ABSTRACT:
A motor controller calculates a motor torque command based on motor speed and causes a motor to generate a torque corresponding to the motor torque command, to drive a machine load coupled to the motor. The motor controller includes a speed compensator that makes, when a speed compensation torque is calculated based on the motor speed, frequency characteristics of the speed compensation torque for the motor speed exhibit a low frequency cutoff characteristic so that steady-state gain in frequency response is less than a maximum gain value. A torque adder generates a motor torque command by adding to the existing motor torque command an externally input feedforward torque signal and the speed compensation torque.

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