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RTLinux - based CNC system software development

Author: ChenJianChun
Tutor: LiuXiongWei
School: Huaqiao University
Course: Mechanical Manufacturing and Automation
Keywords: RTLinux System compensation Acceleration and deceleration control Soft PLC Network Measuring
CLC: TG659
Type: Master's thesis
Year: 2003
Downloads: 255
Quote: 3
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Abstract


This topic is based on the basic framework of the implementation of numerical control system based on RTLinux. Therefore, the author's main job is to: Review of the development trend of the numerical control technology at home and abroad, and improve the basic framework of the numerical control system and other functional modules based on the development of numerical control system. This article focuses on depth study and explore the contents of the following aspects: (1) improve the basic framework of the NC system. Open CNC system hardware platform is a PC software platform is generally DOS and Windows. In this paper, the analysis pointed out that DOS and Windows there are inadequacies, RTLinux is a free operating system for real-time high, is the development of numerical control system ideal software platform. Improve the numerical control system of interpolation, position control modules, concise introduction to the CNC system software framework. (2) the theoretical study of the the CNC system error compensation. This article discusses traditional tool length compensation algorithm based on the software tool length compensation. According to the traditional tool radius compensation algorithm, summed up a set formula suitable for software programming directly, and successfully applied to the numerical control system. The combination of traditional and other pitch error compensation and machine usage proposed software methods to achieve flexibility pitch error compensation. At the same time, elaborated Backlash error compensation software, and software methods to be implemented. (3) CNC system acceleration and deceleration control theory study and realization. This innovation to a new deceleration control algorithm, the basic principle of the algorithm and implementation process. (4) the software PLC system development. In general, the numerical control system of hard PLC switch control of machine tools, but the versatility of hard PLC, and the price is more expensive. The resources provided by this article take full advantage of the hardware and software of the CNC system platform, the use of these resources to develop soft PLC system technology on the development of soft PLC system and successfully developed a soft PLC system. (5) development of network functions. The CNC system generally does not have the network functions or only a very limited network functionality, such as the transmission NC program. In this paper, network programming ideas CNC system network using PC software resources, the CNC system network, and has successfully developed a numerical control system of remote control functions and file transfer capabilities. (6) data exchange and development. This article put forward innovative CNC machine tools set of measurements and processing functions in one's thinking and data exchange function of the numerical control system for data exchange between CAD / CAM systems.

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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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