The difference between stepper motor and servo and servo motor
First, the difference between stepper motor and servo and servo motor
Stepper motor: It is an open-loop control element stepping motor that converts an electrical pulse signal into an angular displacement or a linear displacement. Simply put, the electric pulse signal is used to control the angle and the number of revolutions. Therefore, he only relies on the pulse signal to determine how much to turn. Since there is no sensor, the stop angle will be deviated. However, accurate pulse signals minimize the deviation.
Servo motor: The servo control circuit is used to control the rotation speed of the motor, and the sensor is used to control the rotation position. So the position control is very precise. The speed is also variable.
Steering gear (electronic steering gear): The main component of the steering gear is the servo motor. It includes servo motor control circuit + reduction gear set. Oh, yes, the servo motor does not have a reduction gear set. The steering gear has a reduction gear set.
If it is a limit servo, the potentiometer under the output shaft is used to determine the steering angle of the rudder arm. Steering signal control is a pulse width modulation (PWM) signal that can be easily generated by a microcontroller.
