Microstepping stepper motor has tighter position control accuracy and better performance. The speed of stepper motor driven by micrstepping is less than one step per movement. The stepper motor works by turning each current pulse into a complete step under normal working conditions. Microstepping allows the stepper motor to make finer steps. This is accomplished by having the controller and driver send appropriate types of current pulses to the stepping motor.
Microsteppeing stepper motor use pulse width modulation (PWM) voltage to control the current of the stepper motor winding, therefore, it can have a plurality of stable intermediate states between zero current and maximum current, and the generated synthetic magnetic field vector realizes subdivision of the magnetic field, thereby realizing subdivision of the step angle. The most obvious advantage is reducing the stepper motor step angle and enhancing the positioning resolution. Another important benefit is improving smoothness of motor motion. Since stepper motor is an incremental motion device that resonates when the step frequency approaches the natural frequency of the motor. Therefore, it will limit the application of stepper motors at low speeds. With microstepping, there will be no overshoot, damped oscillations and resonance.