Experimental Validation of Direct Synthesis-Based PI/PID Controller Applied to First and Second Order Variable Area Tank Process

This paper's primary goal is to design and experimentally test a PI/PID controller based on Direct Synthesis (DS) method for first and second order variable area tank processes. A desired closed loop transfer function and a process model are used to develop the controller in the DS technique. The physical system's transfer functions are calculated using empirical approach. The parameters for controller tuning are found using the model that was thus created using time response data. The success of this control strategy is experimentally demonstrated on a bench mark single and two conical tank systems. To evaluate the performance of the controller, servo and regulatory response studies are performed. The presentation in terms of time response specifications, the suggested technique is compared to the Zeigler Nichols (ZN) method.