How Servo Motors Work

Servo motors are usually smaller because they are used in robotics. Because the circuitry is built in, a servo has the benefit of a large power output in proportion to its small size. A smaller engine will usually have a smaller motor. The level of torque remains consistent with the motor size.

Servo motors have an output shaft. A coded signal can be sent from the output shaft to assure proper positioning. When the same signal is sent, the servo position remains unchanged. The angle of the servo motor changes as the signal changes.

Servos are used in many fields besides robotics. They are frequently used in radio controlled aircraft. A servo motor can go between 0 and 180 degrees because of its wide radius. The motor is sufficiently sophisticated to understand the amount of power that is needed. If it needs to go further away, then it will use a greater amount of engine power.

The angle at which the servo motor turns is determined by the control wire. A pulse, whose length determines the angle at which the motor changes, is sent through the control wire. A pulse normally occurs every twenty milliseconds. Longer pulses result in a directional change of more than ninety degrees, while a shorter pulse causes a change in direction of less than ninety degrees.

Hopefully this article provided you with enough basic information on servo motors to help you if you decide to purchase one.

About The Author Samuel Circton is a manufacturer with a great appreciation for motors. This appreciation began when he visited Pacific Technical Products, a company of California advanced motion control systems experts, and saw the incredible work they did with California motion control systems. Using Los Angeles servo motors, they provided Samuel with factory automation assistance and integration services. For more visit http://www.ptpcorp.com/