Analysis of Low Power DC-Motor Drive Control Using Fractional Order PI Controller

Precision motor position control is an important requirement for conveyer belt operation with distinct objects. PID controller is basically used to control the position of servomotor in real time application. However, the integral controller present in the PID loop makes the system unstable in real time application. Again PID controller consist of 3 controlling point to control the motor against vibration, position and stability point of view. In contradiction, the fractional order controller will provide additional 3 controlling point so that the robustness in the transfer function of PID controller can achieve the zero tolerance limit. The robustness of the PID controller can be determined by using either Time domain analysis or Frequency domain analysis. In this research article, an investigation has been carried out to design fractional order PI controller in the state space domain using MATLAB Simulink model. The validation of the transfer function in order to achieve precision motor control has been tested with three benchmarking model.