Medium Density Fiberboard Drying System And PLC Control System Design

Air drying is a kind of technology which commonly used in chemical industry. It is widely used in material of dry, such as drug, artificial fibre and industrial raw material, etc. Especially with the current domestic outfit the development of the market, demand for medium density board to increase greatly. Drying system for medium density fiberboard quality of production has a very important significance. So for drying technology research is necessary.This issue to annual capacity of thirty thousand cubic meters of dry density fiberboard production line system for example. According to the work principle of air drying system finished drying system of each equipment selection and design essentials. This issue combined with fiber dry process requirement, calculation of the main parameters of drying system. According to the specific parameters finished drying system of main equipment of structure design.According to the system's control requirements, this issue designed PLC control system which based on fuzzy PID algorithm. Main completion of the centrifugal fan of rev, stop and over current protection control, to solve centrifugal fan on start-up easily overload problems. The design realized the control of the temperature through adopting fuzzy control PID algorithm. SIMULINK simulation results of the analysis showed that the algorithm had faster response speed and better stability compared with the conventional PID control, so as to enhance the quality of the fiber dry.