基于模糊PID算法的无线分布式温度控制系统

Wireless Distributed Temperature Control System Based on Fuzzy-PID Algorithm

针对工业现场电阻炉温度控制对象分布式、多样性、复杂性和异构性的特点,提出并开发了一种基于模糊PID算法的无线分布式温度控制系统。运用自顶向下的设计方法,建立了分布式、多层次的无线网络拓扑结构,便于对系统中控制软件的规范设计与管理;将模糊PID控制算法与数字滤波算法相结合,实现了对分布式、多台、复杂电阻炉温度的集中管理与分散控制。该系统可靠性、控制精度及响应速度均可满足行业要求,有效地解决了有线分布式控制系统布线复杂、施工困难等问题,而且便于系统二次拓展。

In view of the characteristics of distributivity, diversity, complexity and heterogeneity in the temperature control object of industrial resistance furnaces, a method based on the Fuzzy-PID algorithm for wireless distributed temperature control system is proposed and developed. Using top-down design methodology, a distributed and hierarchical wireless network topology architecture is constructed in order to normatively design and manage the system control software. A kind of Fuzzy-PID control algorithm, combined with digital fil- ter algorithm, achieves centralized management and decentralized control to the temperature of distributed, multiple and complex resist- ance furnaces. Its reliability, control precision and response speed can meet the requirements of industry. Problems of wiring complex, construction difficulty, maintenance inconvenience and high cost encountered in the cable distributed control system （DCS） are effectively solved, and it facilitates system for secondary extensions.