热处理电阻炉炉温的自适应模糊PID控制

Adaptive Fuzzy PID Temperature Control of the Heat Treatment Resistance Furnace

热处理电阻炉温度控制具有大的滞后性、非线性、难以获得准确数学模型的特点。目前热处理炉温度控制系统中常采用的PID控制器难以进一步提高温度控制系统的控制精度,无法与PC机进行通信,难以实现对热处理数据的管理。基于模糊控制无需精确数学模型和PID控制的良好稳态控制特性,本文选用单片机结合模糊PID控制策略对热处理加热炉进行了控制,减小了系统的调节时间,提高了温度控制精度。

The characteristic of delay, nonlinearity and difficulty to acquire the precise mathematical model existing in the temperature control of the heat treatment resistance furnace system was studied. The general PID controller adopted usually in the heat treatment furnace temperature control system is hard to improve temperature control performance, unable to communicate with PC and hard to manage the data of heat treatment. Based on the advantages of fuzzy controller that does not depend on the precise mathematical model and the stabilization of PID controller, single chip computer integrated fuzzy PID control algorithm is adopted, and the temperature system is designed. It is proved that the fuzzy PID control system makes the adjustment time of temperature decreased and the precision of temperature control improved.