Abstract

Dissolve oxygen of fermentation tank system is nonlinear, time varying system. The conventional PID controllers not usually applicable to the type of systems. So a new fuzzy adaptive PID controller is presented constructing the PID control system in Simulink environment, and using a fuzzy logic control toolbox in Matlab to design the fuzzy controller, the computer simulation of this adaptive fuzzy PID controller is realized. Using the Matlab fuzzy logic toolbox to design the fuzzy controller control, And in Simulink conventional PID controller and the adaptive fuzzy PID controller emulation, The simulation result, the adaptive fuzzy PID controller has fast response speed, control sensitivity and adapt to the advantages of strong performance.

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