Research On Arm-Based Numerical Control System Of Wire Cut Electrical Discharge Machining

With the development of embedded technology, embedded systems are widely used in industrial production. In recent years, embedded systems are emerging in Numerical Control (NC) machine tools as major force of industrial production. In this paper, by analyzing on ARM-based Wire cut Electrical Discharge Machining (WEDM)system control requirements of NC, overall hardware and software of system framework is constructed , and each of the specific modules of system control software design and implementation is analyzed and explained.In this paper, Windows CE.net operating system and ARM9 hardware platform is selected as WEDM system according to functional requirements. The job of configuration and tailoring for this platform, and the work methods of the operating system customization and migration are all determined. To various components of the hardware platform, structural is analyzed and function is described.To research and discuss NC interpolation algorithm trajectory control and feed the realization of motion control for WEDM system is analyzed. Using an improved by-point comparison of the interpolation method trajectory control of linear motion and circular motion for WEDN is achieved. And with stepper motor torque-frequency characteristic curve acceleration and deceleration control method is adopted for automatic lifting speed control.To design WEDM pulse power, the pulsed power supply design requirements and ideas is analyzed, scheduling and management of procedures use the structure named before after type, and pulse wave form generator constituted by a programmable logic device is used to achieve a design of power supply with variable-frequency pulse and variable duty cycle, the implementation method of other functional modules is analyzed.In process of the system software's implementation, the overall system software architecture is analyzed, embedded graphical user interface design is completed, keyboard module design task is finished and the goal of compiling processing is achieved.Finally, the job for finishing the topic is summarized, Issues to be resolved and significant improvements is exposed in the process of researching WEDM system.