Evaluation of different tangential methods on the performance of PID controller’s tuning (TEMPERATURE) / Farhana Aqilah Raslan

Process control aims to control a process by measuring one variable and adjusting another variable. The objective of this study is to evaluate the effect of different tangential methods on the performance of PID controllers for temperature process control. The experiment's main goal is to run an open-loop to verify which method will produce the better result using tuning rules by Ziegler- Nichols. Besides, the disturbance will be decisive to determine which method has the most stable and fastest process. Furthermore, the SV change was stimulated to determine the best method between Tangent method, Reformulated method and Two- Point method. After getting the value from the tuning rule, the value of PB, I and D can be known. As the proportional band (PB) value increases, the process response (PV) will be slow and the process response curve shifts to the right. An increase in integral (I) would cause the PV being slower and the process response curve will be shifted to the right. Without the oscillations, the appropriate amount of derivative (D) action can quickly stabilise the process variable (PV) at the setpoint. As a result, when compared to the tangent method and the reformulated method, the two-point method yields the most accurate data corresponding to the tuning rules. In conclusion, it can conclude that the Two-Point method outperforms the Tangent and Reformulated methods in terms of performance and efficiency.