International Journal of Engineering and Innovative Technology (IJEIT)
Adjustable closed loop speed control of DC motor has many applications-in drive configurations. The main advantage of closed loop DC motor is that it is simple to control, high reliability, low cost and fast responded motors still find a wide range of use in various field where controlling of speed is the foremost requirement. Their field of application is as follows: for driving constant speed line, for traction work, for intermittent high torque loads. In earlier times mainly rheostatic control was in practice for controlling the speed of DC motor.