智能混合型控制器在温度控制的研究与应用

Research and application of intelligent hybrid controller in temperature control

炉温控制系统具有温度时滞、非线性等特点,结合传统PID控制和模糊控制的优缺点,设计出一种混合控制器,解决炉温控制温度稳定性问题。当温度偏差值大于切换值时,模糊控制器做主控制器,以加快系统的温度响应特性。当温度偏差值小于切换值时,PID控制器做主控制器,以提高温度的控制精度。该控制器应用在焦炭反应性强度测定装置中,提高了控制温度的响应特性和精度,具有较强的鲁棒性,控制效果较好。

The furnace temperature control system has the characteristics of temperature delay and nonlinearity.The paper combines the advantages and disadvantages of traditional PID control and fuzzy control to design a hybrid controller to solve the temperature stability problem of furnace temperature control.When the temperature deviation value is greater than the switching value,the fuzzy controller is the main controller to speed up the temperature response characteristics of the system.When the temperature deviation value is less than the switching value,the PID controller is the main controller to improve the temperature control accuracy.The controller is applied in the coke reactivity strength measuring device,which improves the response characteristics and accuracy of the control temperature,has strong robustness,and has good control effect.