Considering the characteristics of combustion process in the tunnel kiln such as big inertia,large time delay,nonlinearity,time-varying and strongly coupling,the membership functions of input variables and output variable of the fuzzy controller were determined with the method of constructing a fuzzy set by using clear sets.A new fuzzy control strategy was presented for the temperature in the tunnel kiln based on adaptive particle swarm optimization algorithms.The results of simulation and real time control...