基于OPC的数控加工单元数据采集技术研究

发布时间：2018-06-01 17:35

  本文选题：840D数控系统 + 数据采集　； 参考：《电子科技大学》2015年硕士论文

【摘要】：数控机床是精密的机电一体化控制设备,具有加工效率高以及智能化程度高的特点。由于其自身系统的复杂性,事后的故障维修大多耗时耗力,严重耽误生产计划,数控机床的远程监控与故障诊断旨在对加工过程中的机床进行状态监控与故障诊断,及时发现机床异常及故障,避免造成更大的损失。数控机床的数据采集是监控与诊断的数据基础,准确、有效和及时的机床数据是进行数控机床状态监控及故障诊断的有效保障。本课题以搭建数控机床的远程监控和故障诊断系统为总体目标,分数控机床的数据采集、网络平台搭建及故障诊断算法研究三个阶段加以实施。本文就数控机床数据采集及相关软件开发方面做了如下的相关工作:1、数控系统数据采集方法研究:研究了数控系统的硬件结构与软件系统,针对课题应用对象——西门子开放式的840D数控系统,采用基于OPC规范的数据采集方法进行数控系统内部数据的采集。2、海量过程数据处理方法研究:针对车间加工现场海量的机床过程数据,在研究了海量过程数据处理相关方法的基础上,提出了一种基于旋转门算法的数据压缩处理算法,完成了算法实现并测试验证了算法的优越性。3、数控机床数据采集软件的实现:根据OPC规范并结合西门子840D中的实际情况,利用C#语言进行了数据采集客户端软件的编码实现,包括基本的数据采集功能、数据压缩处理(结合与Matlab的混合编程)以及与数据库的通信等。并利用西门子支持的HMI二次开发将客户端软件嵌入到HMI中。4、数控机床数据采集软件的测试:围绕数据采集软件在MMC中的部署能否完成采集工作以及是否会影响数控系统正常运行的问题,本文进行了采集软件功能和性能两个方面的测试工作,测试结果表明客户端软件在MMC中的嵌入能完成预期工作并且对数控系统的影响甚微。
[Abstract]:CNC machine tool is a precise electromechanical control equipment with high machining efficiency and high intelligence. Because of the complexity of its own system, the maintenance after the failure is mostly time-consuming and labor-consuming, which seriously delays the production plan. The purpose of the remote monitoring and fault diagnosis of NC machine tool is to monitor and diagnose the condition of the machine tool in the process of machining. Timely detection of machine tool anomalies and failures, to avoid causing greater losses. The data acquisition of NC machine tools is the basis of monitoring and diagnosis. Accurate, effective and timely data is an effective guarantee for monitoring and fault diagnosis of NC machine tools. This subject takes the remote monitoring and fault diagnosis system of NC machine tool as the overall goal. It is implemented in three stages: data acquisition of NC machine tool, network platform construction and fault diagnosis algorithm research. In this paper, the data acquisition of CNC machine tools and the development of related software have done the following work: 1. The research of data acquisition methods of CNC system: the hardware structure and software system of CNC system are studied. In view of the subject application object, Siemens open 840D numerical control system, The data acquisition method based on OPC specification is used to collect the internal data of numerical control system. The data processing method of mass process data is studied. On the basis of studying the related methods of mass process data processing, a data compression processing algorithm based on rotary gate algorithm is proposed. The algorithm is implemented and tested to verify the superiority of the algorithm. The realization of data acquisition software for NC machine tools is realized. According to the OPC specification and the actual situation of Siemens 840D, the coding of data acquisition client software is implemented by using C # language. Including the basic data acquisition function, data compression processing (combined with Matlab mixed programming) and communication with the database. The client software is embedded in HMI by HMI secondary development supported by Siemens. The test of data acquisition software for NC machine tools: whether the data acquisition software can be deployed in MMC and whether it will affect the number of data acquisition software? The problem of the normal operation of the control system, In this paper, the function and performance of the acquisition software are tested. The test results show that the client software embedded in MMC can accomplish the expected work and has little effect on the NC system.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG659
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本文编号：1965062