A Control Algorithm for Speed Adjustment of Stepping Motor Based on Photoelectric Encoder
A photoelectric encoder and photoelectric coding technology, applied in the direction of motor generator control, control system, electrical components, etc., can solve the problem of uneven speed output result span, and achieve the effect of wide speed regulation range
Active Publication Date: 2022-05-13
大唐半导体科技有限公司
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[0005] In view of this, the present invention provides a stepper motor speed adjustment control algorithm based on a photoelectric encoder, which solves the problem of uneven span of speed output results achieved by the speed adjustment level of the current control algorithm
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] The embodiment of the invention discloses a stepping motor speed adjustment control algorithm based on a photoelectric encoder, such as image 3 shown, including:
[0021] Step 1: Select the photoelectric encoder, and know the number of photoelectric encoder disk holes M, M=400, 600, or 800;
[0022] Step 2: Set the number of speed levels S, where, Set the currently selected speed V from the speed grade, and establish the relationship b...
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The invention discloses a stepping motor speed adjustment control algorithm based on a photoelectric encoder, which includes selecting a photoelectric encoder, and knowing that the number of holes of the photoelectric encoder disk is M; setting the number of speed levels S, and selecting the number of holes that need to be adjusted The current speed V, establishes the relationship between the current speed V and the number of holes M of the photoelectric encoder disk: if the number of holes divided by the current speed can be divisible, then the photoelectric code disk will send a pulse to drive the motor every time A holes pass; it cannot be divisible, and there is a remainder B , then the number of times the photoelectric encoder disk sends pulses to drive the motor every time it passes through A holes is V-B times, and the number of times the photoelectric encoder disk sends pulses to drive the motor every time it passes A+1 holes is B times, and it passes through A holes and A The pulse frequency of +1 hole photoelectric encoder disk is evenly and alternately executed. The invention realizes that the output speed of the stepping motor is equally spaced from the highest to the lowest, and the speed regulation range is wider and more flexible.
Description
technical field [0001] The invention relates to the technical field of industrial control, and more specifically relates to a stepping motor speed adjustment control algorithm based on a photoelectric encoder. Background technique [0002] In many industrial control and smart home fields, the application of stepping motors to drive external execution devices is becoming more and more widespread. And many scenarios use external sensors to adjust the running speed of the motor in a closed loop. The photoelectric encoder sensor is the most widely used closed-loop speed sensor in the industry. Its cost is low, the control method is simple, and only one MCU is needed to control the motor drive equipment. The basic principle is as follows: figure 1 As shown, the opening on the photoelectric code disc is used to generate a rising edge or falling edge pulse through the optocoupler, and this pulse is input as a signal to the MCU for subsequent execution judgment. [0003] The exis...
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IPC IPC(8): H02P8/14
CPCH02P8/14
Inventor 顾晗
Owner 大唐半导体科技有限公司