Motor controller

Abstract

To provide a motor control device, capable of simply making an adjustment accordance to the control specifications, and making an optimum adjustment appropriate to applications, in a short time.A motor control device includes a feedback computing portion for inputting position command signals or speed command signals and motor revolution signals, and for computing torque commands by computations in which a transfer function of a feedback loop from the motor revolution signals to torque command signals includes a peak or a zero point, a response parameter input portion, and a ratio parameter input portion. A loop gain, i.e. the gain of the feedback loop is set, according to the response parameter, and the peak or the zero point of the feedback loop is set, such that the ratio between the response frequency that is a value obtained by dividing a loop gain by the inertial value targeted for control, and a frequency corresponding to a peak or zero point of the feedback loop, according to the response parameter and the ratio parameter, reaches a value set by the ratio parameter, thereby facilitating adjustment in a short time.

Description

technical field [0001] The present invention relates to a motor control device used as a drive device for a machine tool, a semiconductor manufacturing device, various conveying devices, and the like. Background technique [0002] In the motor control device, it is necessary to generate a command through the calculation of the feedback loop of the torque command based on the motor speed or the motor angle, and it is necessary to appropriately set the loop gain, the zero frequency in the speed PI control, the filter frequency, the feedback The poles and zeros of the transfer function of the ring, etc. In addition, since it is cumbersome to set these parameters individually, and knowledge for setting them appropriately is required, adjustment is difficult for inexperienced persons. [0003] As a conventional technology to improve this point, for example, one input parameter is input from the outside, and a specific relational expression is used from the input parameter, and b...

AI Technical Summary

Problems solved by technology

In addition, since it is cumbersome to set these parameters individually, and knowledge for setting them appropriately is required, adjustment is difficult for inexperienced people.

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