Development of PID Controller Tuned by using Ziegler Nichols Method for Controlling the Fluid Level in Coupled Tank System.

Abstract

– Coupled Tank system is largely used nowadays in chemical process industries. Tanks are used to transfer the fluids from one tank to the other. In this process, flow of fluids between tanks should be monitored because of the perfect mixing of chemicals in the tanks and to reach the optimal mixing of fluids. In this research paper, PID controller is used to control the fluid level between two tanks. Tuning constants of PID is tunned by using Ziegler Nichols method. All the work is done in Matlab environment. After applying the strategy, performance characteristics i.e., Settling Time (Ts), Rise Time (Tr), Overshoot (O.S) and Steady State Error (S.S.E) was checked and hence concludes that results of CTS system with ZN-PID controller was good and can be used in chemical Process industry.