What are the 3 types of servo motors?
The three types include positional rotation, continuous rotation, and linear. Positional Rotation servos rotate 180 degrees. They also have stops in the gear mechanism to protect the output shaft from over-rotating. A Continuous Rotation servo motor is a servo that does not have a limit on its range of motion.
In this blog post, we will explore the basics of servo motor technology and the different types of servo motors available. Servo motors are electric motors that can be controlled precisely by varying the voltage, frequency, or pulse width of the input signal. They are widely used in robotics, automation, and other applications that require accurate positioning and speed control.
There are three main types of servo motors: positional rotation, continuous rotation, and linear. Let's look at each one in more detail.
Positional Rotation Servo Motor: This type of servo motor can rotate up to 180 degrees in either direction, depending on the input signal. It has a feedback potentiometer that measures the angle of the output shaft and sends it back to the controller. The controller then adjusts the voltage or pulse width to match the desired position. Positional rotation servos have mechanical stops that prevent them from over-rotating and damaging the gears or the motor.
Continuous Rotation Servo Motor: This type of servo motor can rotate indefinitely in either direction, like a regular DC motor. However, unlike a DC motor, it can be controlled by varying the pulse width of the input signal. The pulse width determines the speed and direction of rotation, not the position. Continuous rotation servos do not have feedback potentiometers or mechanical stops, so they can spin freely at any speed.
Linear Servo Motor: This type of servo motor can move in a straight line, instead of rotating. It has a rod that extends and retracts according to the input signal. The rod is attached to a rack and pinion mechanism that converts the rotary motion of the motor into linear motion. Linear servos have feedback sensors that measure the distance traveled by the rod and send it back to the controller. The controller then adjusts the voltage or pulse width to match the desired distance.
