Pl-servo with state-D feedback and observer for magnetic stirrer machine

This paper presents PI-servo with a state-D feedback and observer designed for magnetic stirrer machine. Actually, the state variables cannot be directly measured that we need to feedback all state variables. Therefore, it is necessary to use an observer for the estimation of those state variables. The speed control DC motor for magnetic stirrer machine is compared between the Ogata's Method and PI-servo with State-D feedback and observer. The dynamic responses of a control system demonstrates effective the robustness and stability of a disturbance.