Study On An Open Architeucture Numerical Control System Based On The Platform Of Windows

The production and development of numerical control system closely contact with computer technology, now, the open CNC system based on windows has been a major development direction.Today WINDOWS has been the major OS, it possesses some characteristics of open architecture, easy operating and integrated exploiting environment, so it is essential to exploit the CNC system on basis of WINDOWS. This thesis researches the PC-based open CNC system under WINDOWS OS. It aims on researching open characteristics of a CNC system. Based on general hardware and software, generate a general system to control the general machine tools, specialized machine tools and the other machines. The following have been done in this thesis:1. Discuss the development history, current conditions and the trend of CNC technology.2. Research the real-time character of WINDOWS, discuss and compare the real-time control technology under WINDOWS using DLL and VxD. Besides, discuss the VxD technology deeply.3. Study on the multitask character of CNC under WINDOWS OS, bring forward the way resolving the multitask management of CNC using multi-thread technology.4. Discuss the method using object-oriented technology to realize the open reusable character of CNC system software.5. Perform an basic CNC system using pcl-832 under Windows98 OS.