基于数据逆向分析的总线式数控系统轨迹控制精度测试方法

发布时间：2018-06-28 23:59

本文选题：数控系统 + 实时以太网　；参考：《计算机集成制造系统》2015年07期

【摘要】：为了真实反映数控系统控制器的加工精度,通过分析基于工业以太网的数控系统结构,提出一种基于总线数据逆向分析的数控加工功能测试方法。用该方法设计的测试系统由基于FPGA开发的数据侦听器和监听计算机组成。数据侦听器捕捉总线中的数据帧并增加时间戳后发送到监听计算机,通过设计的数据侦听机制避免了对总线正常传输的延时影响。监听计算机上的数控加工功能分析软件对接收的以太网数据帧进行应用层解析,提取出运动控制数据,然后在线逆向建模分析以测试数控系统的加工功能。以圆弧插补精度的测试为例,论述了数据分析的方法,并利用KRTS实时扩展为数据接收和分析过程提供实时运行环境。通过对一款基于EtherCAT的数控系统插补精度测试表明,该方法可以简洁高效地测试数控系统的加工功能。
[Abstract]:In order to truly reflect the machining accuracy of NC system controller, a NC machining function test method based on bus data reverse analysis is proposed by analyzing the structure of NC system based on industrial Ethernet. The test system designed by this method is composed of a data listener based on FPGA and a monitor computer. The data listener captures the data frame in the bus and sends it to the monitor computer after increasing the timestamp. The delay effect on the normal transmission of the bus is avoided by the designed data listening mechanism. The NC machining function analysis software on the monitor computer analyzes the received ethernet data frame in the application layer, then extracts the motion control data, and then the on-line reverse modeling analysis is used to test the machining function of the NC system. Taking the measurement of arc interpolation accuracy as an example, this paper discusses the method of data analysis, and provides a real-time running environment for data receiving and analyzing process by using KRTS real-time extension. The interpolation accuracy test of a CNC system based on Ethercat shows that this method can test the machining function of NC system succinctly and efficiently.
【作者单位】：山东大学机械工程学院;山东大学高效与洁净机械制造教育部重点实验室;
【基金】：国家科技重大专项资助项目(2012ZX04010-021-002-005)~~
【分类号】：TG659

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