| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vibration suppression and control unit capable of suppressing vibration and generating required torque accurately after suppression of vibration. <P>SOLUTION: The vibration suppression and control unit comprises a variable lowpass filter 10 for filtering a revolving speed N of a motor, a subtractor 12 to detect difference between the revolving speed N and the revolving speed y after filtering, an amplifier 13 to calculate a correction value based on the detected difference, an adder 14 to correct a torque command value by the calculated correction value, and a current control part 11 to control driving of the motor by the corrected torque command value. The unit is so composed as to lower a time constant of the variable lowpass filter 10 based on the time that has elapsed since the time of change in the torque command value. The vibration suppression and control unit is capable of suppressing vibration by lowering the time constant of the filter based on time that has elapsed since the time of change in the torque command value, and generating required torque accurately after vibration has suppressed. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
