synchronous motor and stepper motor

The advantage of a stepper motor is that it can be precisely positioned to turn "one step" at a time, either forward or reverse, and can also be rotated continuously.#!/usr/bin/env python######################################################### #File name:stepmotor.py# Author: Jason dai# date:2015/01/26######################################################## #import RPi.GPIO as GPIOimport Tim eIN1 = one # p

Principle of stepper motor According to common sense, the wiring of stepper motor depends on the color of the wire. However, the color of the stepping motor produced by different companies is different. Especially foreign stepper

= 5;Break;Case 1:Show_num = 4;Maichong = 4;Break;Case 2:Show_num = 6;Maichong = 6;Break;Case 3:Show_num = 8;Maichong = 2;Break;}If (flag = 0){Table_begin = 0;}ElseTable_begin = 4;}Void qudong (){Uchar I, j;For (j = 0 + table_begin; j {P1 = table1 [j];For (I = 0; I {Display ();}}}Void main (){While (1){Key ();Dispose ();Qudong ();}} How can I control the speed of a motor with one key? Example of stepper

figure 1 look. The other graphs are the same. single-pole and bipolar modulation If you want to have a brake function, ___A PWM signal that is complementary to the PWM signal must be used.This signal provides a continuous flow path for the motor during the PWM shutdown,Equivalent to the synchronous continuation of switching power supply, also known as synchr