Study of Software-only CNC System Based on Windows

Real-time performance of Windows is analyzed in this paper,and time methods usually used under Windows are evaluated by means of experiments.The results show real-time performance of interrupt timer in kernel mode is high and it is feasible to develop real-time position control module with driver development tool under Windows.A software-only open CNC system solutions based on Windows,software-only CNC system's software and hardware structure are proposed.The Windows-based software-only CNC system test platform has been developed.Using the platform circular motion experiment on high precision X-Y feed servo table has been completed.The results show that the platform can realize motion control system functions of the basic tasks with contour error within ± 5μm that reaches level of middle precision CNC system,and the contour accuracy can be further improved by using proper control strategy and adding the error compensation unit.