The step motor dc motor comparison and its advantages and disadvantages
The main difference between stepping motor, dc motor and brushless dc motor is their drive. The step motor is moved in a step-by-step manner, and the dc motor and the brushless dc motor are usually controlled by continuous movement. The step motor USES direct control, its main command and control variables are step positions.
The dc motor is controlled by the voltage of the motor, which is the command variable in position or velocity. The dc motor needs feedback control system and he controls the position of the motor in an indirect manner. The stepping motor system is operated in "open loop mode".
The step motor can achieve precise positioning control, and it is widely used in the precision positioning system of displacement. But the control of the relative dc motor is complex; Dc motor control is relatively simple, but the positioning precision is not high, but it can be used for the system that is high in speed and low displacement.
