| 摘要 |
<P>PROBLEM TO BE SOLVED: To control a motor without oscillating or instabilizing control in the vicinity of a resonance frequency in a motor controller. <P>SOLUTION: The motor controller which is equipped with a position controller, a speed controller, a current controller, and a detector which detects the rotational speed of the motor thereby outputting a real speed signal and also detects the position of the motor, thereby outputting a real position signal, possesses further a motor rotational speed estimator which computes the estimated speed of the motor, receiving the input of motor application voltage and the real current, and a motor rotational speed determination instrument which makes the computed estimated speed the speed signal in the case that the real speed signal is in a specified range and makes the real speed signal the speed signal in the other case, and inputs them into the speed controller. <P>COPYRIGHT: (C)2007,JPO&INPIT |
