Performance analysis model for real-time Ethernet-based computer numerical control system  

作　　者：万加富 李迪 涂钰青 张春华 

机构地区：[1]College of Automation Science and Engineering,South China University of Technology [2]College of Information and Engineering,Guangdong Jidian Polytechnic University [3]School of Mechanical and Automotive Engineering,South China University of Technology

出　　处：《Journal of Central South University》2011年第5期1545-1553,共9页中南大学学报（英文版）

基　　金：Projects(50875090,50905063) supported by the National Natural Science Foundation of China;Project(2009AA04Z111) supported by the National High Technology Research and Development Program of China;Project(20090460769) supported by China Postdoctoral Science Foundation;Project(2011ZM0070) supported by the Fundamental Research Funds for the Central Universities in China;Project(S2011010001155) supported by the Natural Science Foundation of Guangdong Province,China

摘　　要：In order to optimize the embedded system implementation for Ethernet-based computer numerical control （CNC） system, it is very necessary to establish the performance analysis model and further adopt the codesign method from the control, communication and computing perspectives. On the basis of analyzing real-time Ethemet, system architecture, time characteristic parameters of control-loop ere, a performance analysis model for real-time Ethemet-based CNC system was proposed, which is able to include the timing effects caused by the implementation platform in the simulation. The key for establishing the model is accomplished by designing the error analysis module and the controller nodes. Under the restraint of CPU resource and communication bandwidth, the experiment with a case study was conducted, and the results show that if the deadline miss ratio of data packets is 0.2%, then the percentage error is 1.105%. The proposed model can be used at several stages of CNC system development.In order to optimize the embedded system implementation for Ethernet-based computer numerical control (CNC) system,it is very necessary to establish the performance analysis model and further adopt the codesign method from the control,communication and computing perspectives.On the basis of analyzing real-time Ethernet,system architecture,time characteristic parameters of control-loop etc,a performance analysis model for real-time Ethernet-based CNC system was proposed,which is able to include the timing effects caused by the implementation platform in the simulation.The key for establishing the model is accomplished by designing the error analysis module and the controller nodes.Under the restraint of CPU resource and communication bandwidth,the experiment with a case study was conducted,and the results show that if the deadline miss ratio of data packets is 0.2%,then the percentage error is 1.105%.The proposed model can be used at several stages of CNC system development.

关 键 词：computer numerical control （CNC） system real-time Ethemet time characteristic parameters performance analysis model manufacturing accuracy 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]