| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller that can presume antiresonance frequency and resonance frequency cost-effectively with simple operations. <P>SOLUTION: In the motor controller comprising an electric motor that drives a machine, a detector that detects the operation amount of the machine, a controller that drives the motor in response to a control command, and a command generator that generates sweep sine wave signals and inputs the signals to the motor controller, an antiresonance frequency presuming means is provided that inputs the frequency information of the sweep sine wave signals outputted by the command generator and the signals from the detectors, treats a point where an absolute value of the signals of the detector becomes maximum as a response peak-to-peak value for the sweeping input frequency in a section covering at least 1/4 of or 'e' times the periodic time of the inputted frequency of the sweep sine wave signals included into the time before and after the corresponding time, and outputs the frequency at which the peak-to-peak value becomes minimum as the antiresonance frequency. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
