PWM system suitable for stepping motor motion management

Abstract

The invention discloses a PWM system suitable for motion management of a stepping motor. Movement control of the stepping motor is divided into the following four modes: a mode A: an open-loop PWM relative position movement mode; a mode B: an open-loop PWM absolute position movement mode; a mode C: a closed-loop coding disc relative position movement mode; and a mode D: a closed-loop coding disc absolute position movement mode. According to the invention, token buffer is established in the FPGA, four control modes of the stepping motor are realized, the multi-interrupt PWM management problem is realized in the FPGA, the FPGA reduces the real-time control intensity of the processor by using four mobile modes, and the motion management of the stepping motor is effectively realized.

Description

Technical field[0001]The present invention relates to the field of motor movement, and more particularly to a PWM system suitable for use in stepper motor motion management.Background technique[0002]In motor motion management, the motor is driven by the motor, the processor control motor drive is a common management plan in the market; the processor is used to implement the PWM pulse command to move, and the processor needs to be in the timer structure in order to implement the information output of the PWM. Manage the high level time of the PWM and the low level time of the PWM. When this timing event is completed, the timing interrupt needs to be generated, and the processor thus acquires information completed by the previous PWM waveform output, and then sends the next PWM waveform signal. The management method is the same as above.[0003]In the prior art, the stepping motor is to change the electrical pulse signal to the motor angular displacement or the electromechanical executi...

AI Technical Summary

Problems solved by technology

[0004] However, the processor's management of PWM pulses will increase the processor's many interrupts, which will impose a certain burden on the processor.

In the management of PWM pulse command delivery, the processor not only needs to calculate the specific moving path and motion mode of the motor movement, but also needs to meet the generation of interrupts in the management, and in the specific motion process, the number of interrupts generated is huge Yes, this huge interrupt generation command will occupy most of the resources of the processor, so that the processor's ability to process other programs and commands will be reduced, thereby reducing the efficiency of the entire solution

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