A Decoupling Control Method of Ceramic Roller Kiln Temperature Based on Thermal Balance

According to the characteristics of ceramic roller kiln temperature process and the implementation scheme of temperature control, we proposed a new control method of the ceramic roller kiln temperature based on thermal balance. We set the difference between the real temperature and the set-point temperature of the ceramic roller kiln as a feedback signal for each control loop. First the decoupling model was established, then we calculated the coupling coefficients of temperature between the adjacent burners with thermal balance principle, finally the temperature coupling coefficients were employed to decoupling compensate for the outputs of the corresponding PID controllers of each burner respectively. Experimental results show that the temperature coupling coefficients can eliminate the temperature coupling between the adjacent burners, and the method can achieve a satisfactory control of the internal kiln temperature process.