PLC系统集成应用探究
2021-01-12谢小四刘军
谢小四 刘军


[摘 要]随着技术的进步,目前功能已经十分强大,除了能完成传统的逻辑控制外,还能实现数据处理、运动控制、过程控制、闭环控制,PID控制、插补功能和通信网络控制等。PLC已发展成为现代控制系统组建中不可缺少的部件,以PLC为核心集成人机界面(HMI)、分布式I/O、视觉分析筛选、变频驱动、伺服驱动、步进驱动、继电接触控制等部件。以PLC为核心,集成上述多个控制部件,组建控制系统,方法多种多样,方式也是灵活多变,应根据设备的实际需求来组建控制系统。
[关键词]控制系统;PLC;HMI;系统集成;信号传输;伺服;步进;变频
[中图分类号]TP393.09 [文献标志码]A [文章编号]2095–6487(2021)11–00–02
Application of PLC System Integration
Xie Xiao-si, Liu Jun
[Abstract]With the progress of technology, the function has been very powerful at present. In addition to completing the traditional logic control, it can also realize data processing, motion control, process control, closed-loop control, PID control, plug-in function and communication network control.PLC has developed into an indispensable component in the establishment of a modern control system, with PLC as the core of integrated human-computer interface (HMI), distributed I/O, visual analysis and screening, frequency conversion drive, servo drive, step drive, relay contact control and other components.With PLC as the core, the above multiple control components are integrated and the control system is established. Various methods are also flexible. The control system should be established according to the actual needs of the equipment.
[Keywords]control system; PLC;HMI; system integration; signal transmission; servo; step forward; frequency conversion
随着社会的发展和技术的进步和国家工业2025战略规划的实施,很多行業都面临着产业升级与改造,把重复繁重的工作用机器来代替,以便高效、不间断、更好地完成工作任务,提升企业竞争力,提高产品质量。而这些都依赖先进精密的机器设备,先进精密的机器设备又离不开先进的控制系统,而先进的控制系统都与可编程控制器相关,下面就以目前主流的以PLC为核心的系统集成应用展开探究。
1 PLC集成与应用发展情况
可编程序控制器(programmable logic controllers,PLC),主要用来替代传统的继电器实现逻辑控制,由于它接线方便、编程容易掌握、体积小、重量轻、能耗低、方便查找故障等,现在已得到广泛的推广及应用。随着技术的进步,目前功能已经十分强大,除了能完成传统的逻辑控制外,还能实现数据处理、运动控制、过程控制、闭环控制,PID控制、插补功能和通信网络控制等。……
