The difference between Servo motor and DC motor are explained here considering factors like number of wires used either two wire or three wire system. The assembly system used, rotation of the motor whether it is continuous or not. The examples of both the motor.
Difference Between Servo Motor and DC Motor in the tabulated form is given below.
|BASIC||SERVO MOTOR||DC MOTOR|
|Wire system||The Servo motor is three wire system known as power, ground and control.||DC motor is two wire system known as power and ground|
|Assembly||It has an assembly of four things DC motor, gearing set, control circuit and a position sensor.||DC motor is an individual machine with no assembly.|
|Rotation||Servo motor does not rotate freely and continuously like DC motor. Its rotation is limited to 180⁰||Movement of DC motor is continuous|
|Examples||They are used in robotic arms, legs or rudder control.||DC motor is used in car wheels, fans etc.
The Servo Motor is basically a DC motor which does not run continuously for a longer period of time. It has a unique arrangement which allows the motor to rotate at a specific angle with greater accuracy and precision. This machine is controlled by a feedback system.
Direct Current (DC motor) as already discussed in the article DC machine, is a device which converts electrical energy into mechanical. It is based on the principle of Fleming’s left-hand rule that when a conductor is placed in a magnetic field which carries current in it, torque is generated which moves the motor.
According to Fleming’s left-hand rule index finger, middle finger and thumb when stretched perpendicular it represented the direction of the magnetic field, the direction of the current and the direction of the force respectively.
Difference Between Servo Motor and DC Motor
- The Servo motor comprises of three wire system known as Power, Ground and Control whereas DC motor is two wire system known as Power and Ground.
- Servo motor has an assembly of four things DC motor, gearing set, control circuit and a position sensor. DC Motor does not comprise of any assembly.
- Servo motor does not rotate freely and continuously like DC motor. Its rotation is limited to 180⁰ whereas DC motor rotates continuously.
- Servo motors are used in robotic arms, legs or rudder control system and toy cars. DC motors are used in fans, car wheels, etc.
Hence, a servo motor is different from DC motor.