Design and Realization of Fuzzy Self-Tuning PID Controller Based on TMS320LF2407A DSPs for Microwave-Vacuum Wood Drying

Aiming at the microwave-vacuum wood drying controlled object with the characteristics of strong coupling, large delay, large inertia, nonlinear and time-variant, a control system based on fuzzy self-tuning PID control and conventional digital PID is proposed. The system combines the cascade control with the fuzzy self-tuning PID control, taking fully advantage of the cascade control, fuzzy control, self-tuning control and PID control, which makes the system possess not only better track ability but also stronger robust and anti-disturbance The design, analysis, and implementation stages are carried out entirely in a TMS320LF2407A digital signal processor-based real-time data acquisition control system and MATLAB/Simulink environment. The simulation result indicates that this system may enhance the entire microwave-vacuum wood drying system control precision and working efficiency, and it´s an effective method to realize automatic control in the wood drying process. What´s more, the control algorithm is simple and practical.