The basic principle of stepper motor
As a special motor for control, the stepper motor cannot be directly connected to the DC or AC power supply, and a dedicated drive power stepper motor driver must be used. Before the development of microelectronics technology and special computer technology, the controller pulse signal generator was completely realized by hardware. The control system used separate components or integrated circuits to form a control loop. Not only the debugging and installation were complicated, but also consumed a large number of components, and once the type was set, To change the control scheme, you must redesign the circuit. This makes it necessary to develop different drivers for different motors, which has high development difficulty and development cost, and is difficult to control, which limits the promotion of stepping motors.
Since the stepping motor is a device that converts electric pulses into discrete mechanical motions and has good data control characteristics, the computer becomes an ideal driving source for stepper motors. With the development of microelectronics and computer technology, hardware and software The combined control method has become the mainstream, that is, the control pulse is generated by the program to drive the hardware circuit. The single-chip microcomputer controls the stepping motor through software to better dig out the potential of the motor. Therefore, the use of single-chip microcomputer to control stepper motor has become an inevitable trend, and also in line with the digital age.
