A fuzzy control system design of constant temperature based on semiconductor refrigeration

The system accuracy of the constant temperature control has high request,and temperature control system constituted of semi-conductor refrigeration has nonlinear,big delay and difficult establishment characteristic of mathematics model,etc. Normal PID controller cannot satisfy system require perfectly,so a new self-adaptive fuzzy PID controller is introduced in this paper. This method can exert fuzzy control characteristics such as high robustness,good dynamic response,short rising time,small surplus,it possesses the dynamic track quality and steady precision of PID controller and good real-time processing. This controller is taken into implication in practice and gets preferable control effect.