板件拼装焊接线控制系统快速再设计关键技术研究

发布时间：2017-12-31 10:31

本文关键词：板件拼装焊接线控制系统快速再设计关键技术研究　出处：《江苏科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：板件拼装焊接线需要根据不同板件拼装焊接对象的工艺要求实现快速响应,从而快速重构成适合于新的加工对象的焊接线。控制系统作为板件拼装焊接线的重要组成部分,其能否实现快速重构将直接影响到整个焊接线系统重构的效率。但由于板件拼装焊接线机械系统的高度可重构的特点,既需要从系统级角度对焊接线进行重构,也需要从工作站级的角度对单元模块进行重构。所以一开始就直接研究控制系统的快速重构比较困难,可以通过研究其控制系统的快速再设计,即针对机械系统的快速重构而使控制系统快速重新设计以适应新的加工系统,从而不仅可以快速实现对新的焊接线系统进行监控,而且也为控制系统进一步实现快速重构奠定了基础。本论文结合板件拼装焊接线的可重构特点与控制系统的控制要求,分别从底层控制系统、监控软件以及网络通信实时性等关键技术对焊接线控制系统如何实现快速再设计进行了研究。首先,对控制系统实现快速再设计的总体方案进行设计。通过对焊接线可重构要求与控制工艺的分析,并结合控制系统总体架构,提出分别从再设计过程的速度与再设计后的运行稳定性两方面来设计的快速再设计总体方案。其次,以快速再设计过程的速度为出发点,对底层控制系统与监控软件如何实现快速再设计进行研究。首先通过研究模块化设计思想与可重构系统理论从而提出了基于模块化选择与裁剪策略的快速再设计方法,并实现了对底层控制系统的快速再设计。之后通过研究OPC通信技术,并在分析焊接线底层数据可配置性的基础上,提出了“组冗余与项选择”数据配置策略,从而实现监控软件的动态再设计。最后,以快速再设计后系统运行稳定性为出发点,对焊接线控制网络再设计后的通信实时性进行研究。在分析PROFIBUS-DP多主站通信协议的基础上,通过研究多主站数据通信实时性策略,对焊接线多主站网络在再设计后的总线目标循环时间进行预估,确保了焊接线网络在任何再设计组合下的通信实时性。
[Abstract]:Plate assembly welding line needs to achieve rapid response according to the process requirements of different plate assembly welding objects. The control system is an important part of the plate assembly welding line. Rapid reconfiguration will directly affect the efficiency of the reconfiguration of the whole welding line system, but because of the highly reconfigurable characteristics of the mechanical system of the plate assembly welding line, it is necessary to reconstruct the welding line from the point of view of the system level. It is also necessary to reconstruct the unit module from the workstation level, so it is difficult to study the rapid reconfiguration of the control system directly from the beginning, so we can study the rapid redesign of the control system. That is to make the control system quickly redesigned to adapt to the new machining system for the rapid reconfiguration of the mechanical system, so that not only can the rapid implementation of the new welding line system monitoring. This paper combines the reconfigurable characteristics of the plate assembly welding line and the control requirements of the control system, respectively from the bottom control system. Monitoring software and real-time network communication and other key technologies on the welding line control system how to achieve rapid redesign. First of all. Through the analysis of the reconfigurable requirements of the welding line and the control process, and combined with the overall structure of the control system. Put forward the overall scheme of rapid redesign from the two aspects of the speed of the redesign process and the operational stability after the redesign. Secondly, take the speed of the rapid re-design process as the starting point. This paper studies how to realize the rapid redesign of the underlying control system and monitoring software. Firstly, by studying the modular design idea and the theory of reconfigurable system, the rapid redesign based on modularization selection and clipping strategy is proposed. Method. After the research of OPC communication technology, and on the basis of analyzing the configuration of bottom layer data of welding line, the paper realizes the rapid redesign of the bottom control system. The data configuration strategy of "group redundancy and item selection" is put forward to realize the dynamic redesign of monitoring software. Finally, the system running stability after rapid redesign is taken as the starting point. Based on the analysis of PROFIBUS-DP multi-master station communication protocol, the real-time strategy of multi-master station data communication is studied. In order to ensure the real-time communication of welding wire network under any redesigned combination, the target cycle time of the bus is estimated after the redesigned multi-master station network.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG43

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