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Design of Task Controller in Rtlinux-based Cnc System

Author: AnYongKang
Tutor: LiTieCai
School: Harbin Institute of Technology
Course: Electrical Engineering
Keywords: CNC system RTLinux RCS Task controller Code interpreter
CLC: TG659
Type: Master's thesis
Year: 2010
Downloads: 83
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Abstract


CNC technology is an important part of modern processing technology , as an important indicator of a country's manufacturing industry , more and more people's attention . With the rapid development of computer technology and manufacturing techniques , advances in CNC technology provides a powerful support . In the future, modular, open , networked , and composite will be an important direction of development of numerical control system , and thus how to continue to improve in the art based on the numerical control system to meet the new demand has important significance . In this thesis, aspheric optical parts , CNC lathe processing engineering background , to conduct a study on the numerical control system based on RTLinux tasks controller . In reference to the existing CNC system design based on the CNC machine tool system software designed for the project . The paper first analyzes the embedded NC system running platform , introduced CNC system hardware platform based on the PC104 industrial control board . RTLinux as the final choice in the analysis of the advantages and disadvantages of the three different numerical control system software platform , and a detailed analysis of a the RTLinux real time operating system . CNC system platform for real-time , four important real-time performance testing to verify whether they meet the numerical control system for real - time performance requirements of the platform . CNC system software in general and the task controller module after the RCS Library and NML communication mechanism design . The overall design of the CNC system is achieved in accordance with the RCS library design ideas . The task of the controller is the hub of the NC system software , the main function is the coordination of the various parts of the CNC system , in accordance with the the parts processing instructions to complete the processing parts . In the task controller design implementation , discusses the mutual conversion between its status and mode , as well as the different states and different modes , communication interface with other modules , the implementation of the main flow . Finally, the research and important task controller code interpreter code interpreter library , so that it can independently run CNC system . CNC system task controller code interpreter performance testing and independent code interpreter were tested , the test results show that they are the basic realization of the function of each part , and has better performance .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Program control machine tools, CNC machine tools and machining
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