Fuzzy-proportional-integral-derivative hybrid controller design for ultra-high temperature milk processing

In the ultra-high temperature (UHT) process, fluid is raised above 135 °C for a short period of time (typically 4 seconds) and then quickly cooled ensuring no microbes remain in final product. To have better quality processed milk, stringent control system necessary. solve this problem detailed control-oriented mathematical model heating UHT application developed block diagram established by identifying various systems signals. draw merits feedforward controller (transfer function or fuzzy logic based) proportional-integral-derivative (PID) feedback compensator, PID hybrid designed simulated MATLAB environment. Findings simulation results indicate that fuzzy-PID compensator concatenates benefits both controllers. processes error signal tracks setpoint whereas fuzzy) effectively rejects disturbance signal’s effect on controlled variable. The performs than individual controller.