Patent ID: 9287816
Filing Date: 2016-03-15
CPC Classification: H02P

Claim Text:
1. A motor controlling device comprising: a position controller to generate a speed reference based on a positional reference and a motor position; a speed controller to generate a torque reference based on the speed reference and a motor speed; a motor drive to drive a motor based on the torque reference, the motor being to drive machinery to which an acceleration sensor is attached; an acceleration feedback signal generator to generate a feedback signal to the speed reference based on an acceleration detection signal that is a detection signal of the acceleration sensor, the acceleration feedback signal generator including a primary low pass filter and a primary high pass filter arranged in series to the primary low pass filter; and a positional reference filter inputted with the positional reference and suppressible of low frequency vibration of the machinery, the positional reference filter having a time constant same as a time constant of the primary low pass filter in a transfer function thereof, the time constant of the positional reference filter is the same as a time constant of the primary high pass filter in the transfer function.