【摘要】 氮气加热器用于石化工业丙烯精制工程,给再生氮气加热.针对新疆独山子石化厂氮气加热器,利用LonWorks现场总线控制技术构成网络,采用前馈控制PID算法,通过周波调整法对电加热管的加热功率进行控制,在保证的规定时间内连续输出合乎温度要求的高温氮气.本控制网络的核心技术是神经元芯片(NeuronChips)、智能网络节点和LonTalk通信协议.本文介绍了LonWorks技术以及氮气加热控制系统总体方案与网络结构设计,节点模块设计与配置,控制电路设计,控制算法设计与软件编程.更多还原

【Abstract】 Nitrogen gas heater has been used in propylene refine to heat the regeneration nitrogen gas,aimed with network of LonWorks FCS technique,adopting PID algorithm of feedfront control and by cycle adjust to control heat power of electricity heat tube to ensure that continuous output high temperature nitrogen of constant temperature in set time. The kernel technigue of control network is neuron chip,intelligent net node and LonTalk communication protocol. In this paper we introduce LonWorks technigue , total project of control system of nitrogen gas heater ,design of network structure design and configure of node model,design of control circuit and control algorithm and software programme.更多还原