The Research & Development Of CNC System Based On Real Time Linux

CNC Systems are the most important parts of CNC products. The realtime and stability of CNC systems are the most important performance. Currently, Most CNC systems in the market are based on DOS or Windows/NT. Unfortunately, neither of them is suitable for industrial control. Linux has many advantages, such as true multi-masks, open source codes, good stability, excellent ram management and strong network function, which make it a good choice for CNC systems, hi this paper, a CNC system is researched and developed based on real time Linux and industrial personal computer with C language, Gnome/Gtk+ lib and Gcc compiler. The main contents of the paper include:1. Disadvantages of current platforms for CNC systems based on PC are analyzed and advantages of CNC systems based on realtime Linux are discussed from such sides as real time, stability and open performance.2. Several approaches to realize real-time control based on Linux are investigated and RTLinux is used to get a real time Linux kernel.3. An open Architecture of LINUXCNC is implemented, the advantages and open characteristics of the system are analyzed, also, the development of the system on real time Linux is introduced.