Two Region Fuzzy Logic Controller For A Two Capacity Interacting Non Linear Level Process

Although a fuzzy logic controller is generally nonlinear, a PI- type single region fuzzy controller that uses only control error and change in control error is not able to detect the process nonlinearity and make a control move accordingly. In this work, a two region fuzzy logic controller is developed for a nonlinear second order process. The simulation study is carried out on a two capacity interacting process and the results are compared with those obtained using a conventional PI controller based on the transfer function model and single region fuzzy logic controller about the operating point of 50%.