摘要
为了满足300 MN模锻水压机等温模锻改造,在对其原控制系统缺陷及控制系统特点进行详细分析后,明确了控制系统优化要求,从控制系统总体结构和硬件配置两方面进行优化。提出了两级控制网络总体结构方案,通过对主流工业通讯网络特点分析,上层监控网络采用工业以太网,下层控制网络采用PROFIBUS-DP现场总线。提出了主站+智能从站方式和主从分布式I/O方式两种硬件配置方案,综合分析两者优劣,结合现场实际需求,选择了主从分布式I/O方式。通过下位机程序编程和上位机组态,实现了控制网络的实时状态监测。根据现场实际应用情况,优化后的控制系统精度高、实时性好、可靠性高、易于维护,能够满足要求,在电气控制方面为等温模锻改造提供了硬件保障。
In order to meet the requirements in isothermal forging modification,the optimization request of control system was determined,and the overall structure and hardware configuration of control system were optimized by analyzing defects and characteristics of the control system in detail. Then,the network structure with two-level control was put forward. Through analyzing the characteristics of mainstream industrial communication networks,the industrial Ethernet was applied in the upper monitor network,and the PROFIBUS-DP field bus was used in the lower control network. Two hardware configuration schemes of master station ＋ intelligent slave stations and master-slave distributed I / O were proposed. After analyzing both advantages and disadvantages comprehensively and combining with the actual needs,the master-slave distributed I / O mode was selected. Through programming and configuration,the real-time condition monitoring of the control network was achieved. According to the actual application,the optimized control system has high precision and reliability,good real-time performance and easy maintaining,and can meet the requirement. Finally,a hardware support is provided for isothermal forging modification according to electrical control requirements.
出处
《锻压技术》
CAS
CSCD
北大核心
2016年第10期103-107,共5页
Forging & Stamping Technology
基金
国家重点基础研究发展计划("973"计划)(2014CB049405)
高性能复杂制造国家实验室自主探索基金资助项目(zzyjkt2013)
关键词
水压机
等温模锻
控制系统
工业通讯网络
通信诊断
hydraulic press
isothermal die forging
control system
industrial communication network
communication diagnostic
