Step motor controller

Abstract

The invention belongs to the technical field of electronics, relates to a hybrid four-phase six-line step motor controller on an industrial sewing machine, and solves the problems that a step motor loses steps, is out of control and the like when the prior step motor controller controls the step motor to run. The step motor controller comprises a controller and a driving circuit of the step motor connected with the controller; the controller comprises a CPLD; the interior of the CPLD is provided with a counter, a timer, a DAC and a dead zone controller respectively, wherein the counter is used for counting positive and negative steering input pulses, the timer is used for providing subdivided time constants, the DAC is used for realizing analog quantity output of an I / O port of the CPLD, and the dead zone controller is used for avoiding short circuit due to synchronous starting of upper and lower bridges in the driving circuit; and a signal input end of the CPLD is connected with an external singlechip, and an output end of the CPLD is connected with the driving circuit. The step motor controller has the advantages that the step motor does not lose the steps, is not out of control during operation and the like.

Description

technical field [0001] The invention belongs to the field of electronic technology, and relates to a stepping motor controller, in particular to a hybrid four-phase six-wire step on an industrial sewing machine and relates to a stepping motor controller. Background technique [0002] In the prior art, industrial sewing machines widely use stepper motors, especially hybrid four-phase six-wire stepper motors, as power sources in the X and Y directions. In the stepper motor drive control, it is generally realized by using a single-chip microcomputer with a dedicated stepper motor drive controller, which has problems such as high cost and inconvenient collocation of various links. Therefore, in the general industrial sewing machine control system, the single-chip microcomputer plus the drive element is adopted. In order to improve the operation accuracy of the industrial sewing machine, the stepper motor needs to be subdivided, so the control of the stepper motor requires strict...

AI Technical Summary

Problems solved by technology

However, the industrial sewing machine control system itself is a high-speed and complex system that needs to handle a large number of other tasks. Therefore, if the stepper motor control is integrated into the single-chip microcomputer for processing, it not only increases the computing burden of the single-chip microcomputer, takes up a lot of single-chip microcomputer resources, and often Cause the stepper motor to run out of control

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