Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2006-04-18
2006-04-18
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S434000, C318S609000, C318S610000, C318S619000, C318S652000
Reexamination Certificate
active
07030581
ABSTRACT:
This invention relates to a motor controller for driving an object to be controlled by torque from a motor responding to a computed torque command, the object being provided with the motor and a mechanical load. The motor controller includes: a feedback computation unit into which is inputted a positional command signal or a speed command signal, and a motor rotational signal which is a detected value of the motor's rotational angle or speed, the feedback computation unit being for computing the torque command by a computation in which the transfer function for a feedback loop from the motor rotational signal to the torque command includes a pole or a zero point; a response parameter input unit for inputting a response parameter; and a ratio parameter input unit for inputting a ratio parameter. A loop gain which is the gain of the feedback loop is determined based on the response parameter. The pole or the zero point of the feedback loop is determined based on the response parameter and the ratio parameter in such a way that the ratio of a response frequency which is quotient of the loop gain divided by an inertia value of the controlled object to a frequency corresponding to the pole or the zero point of the feedback loop is the value determined by the ratio parameter.
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Leykin Rita
Mitsubishi Denki & Kabushiki Kaisha
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