基于MODBUS和EGD的双闭环增压控制系统设计

Design of the Double-loop Pressurization Control System Based on MODBUS and EGD

摘要:

为适应当前增压过程控制系统,特别是低温增压过程控制系统,对自主性、快速性、可靠性以及安全性等方面日益提高的需求,利用目前工业控制领域中应用最为普遍的PLC控制技术,并结合MODBUS在TCP/IP和串行链路上的两种通讯协议以及具有高速、高效传输性能的EGD映射技术,设计了一种具有“双闭环”架构的增压控制系统;经验证,该系统不仅可以有效规避网络故障对增压过程的影响,提升系统的自动控制能力,同时通过一系列软、硬件方面的可靠性设计,提升了增压过程的安全性。

Abstract:

For adapting to the increasing demand on the autonomy,rapidity,reliability and safety of the pressurization control systems,especially for the cryogenic ones,design a double-loop pressurization system based on MODBUS and EGD,by using of the most popular technology in current industrial control field – PLC. MODUS has two protocols about TCP/IP and serial communication link,while EGD has the advantages of high speed and efficiency. It is proven that the system can not only effectively avoid network fault on the boosting process effect to increase the automatic control ability,but also enhance the safety of the pressurization process by using a series of reliability designs on software and hardware.