基于PIC单片机的渗碳炉模糊PID温度控制系统  

Fuzzy PID Temperature System Control of Carburization Furnace Based on PIC Single Chip

作　　者：刘景艳[1] 张素妍[1] 郭顺京[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《郑州大学学报（工学版）》2010年第6期108-111,115,共5页Journal of Zhengzhou University（Engineering Science）

摘　　要：由于渗碳炉温度控制系统具有大惯性、纯滞后和时变性大等特点,采用常规的PID控制器存在着控制精度低,超调量大等缺点.设计了一种基于PIC单片机的模糊PID控制器,应用于渗碳炉温度控制系统中.通过模糊推理求解PID参数的变化量,对PID参数进行自动整定,从而使控制器具备更强的自适应能力,最后采用M atlab软件进行了仿真.仿真结果表明,该系统既可保持PID控制器良好的稳态响应特性,又具有模糊控制灵活和响应快的优点,使系统能有效抑止纯滞后的影响,并具有较高的控制精度和较好的鲁棒性.Carburization furnace temperature control system is a nonlinear one,which has characteristics of big inertia and great delay.It has low control accuracy and high overshoot with the conventional PID control.The fuzzy PID controller based on PIC single chip is presented,which is used in the carburization furnace temperature control system.The variations of PID parameters are solved by fuzzy inference and the parameters can be self-tuned.So the controller has stronger self-adaptive ability.And the system is simulated with Matlab software.The simulation results show that the system can maintain a good steady-state response characteristics of PID controller,but also has the flexibility and fast response characteristics of fuzzy controller,which can effectively restrain the impact of great delay.And this system is more dynamic and highly precise.

关 键 词：PIC单片机 渗碳炉 模糊PID控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]