Patent ID: 8222852

Claim:
A motor control device comprising: a correction input unit that corrects a control input signal outputted from a controller, and inputs a corrected control input signal into a motor; a measurement unit that measures a physical quantity resulting from rotation of the motor corresponding to a control output; a first signal processing unit that inputs a measurement signal representing the physical quantity inputted from the measurement unit into an inverse model 1/G of a transfer function G of a controlled object, and filters an output of the inverse model 1/G through a first low-pass filter; and a second signal processing unit that obtains a corrected control input signal to be inputted into the motor by the correction input unit, and filters the control input signal through a second low-pass filter, wherein a cutoff frequency of the second low-pass filter is set to be higher than that of the first low-pass filter, and wherein the correction input unit corrects the control input signal outputted from the controller by adding a signal filtered by the second signal processing unit to the control input signal outputted from the controller and also by subtracting a signal filtered by the first signal processing unit from the control input signal.