Study Of Flexible Acceleration/Deceleration Control Method And Software Development For CNC System

Numerical control (NC) is the core of modern manufacturing, and the key technology of manufacturing automation ,and one of the most important aspects of industrial automation .Having great influence to machining quality, Acceleration/deceleration control is one of the key technologies in NC. With the background of "High-speed Micro-fragment NC machining system ", this thesis studied Acceleration/deceleration control method systematically and deeply.This paper is composed of six chapters. Chapter one introduced the development trend of NC technologies, and then illustrated the significance and classification of acceleration/deceleration control, the purpose of flexible acceleration/deceleration control was introduced. In Chapter two . normal acceleration/deceleration control methods was illustrated and analysis was also given, then specified the five phased S-curve flexible acceleration/deceleration control, the basic principal and math model was showed in detail ,and the control method was given. Chapter three introduced the control method for high-speed machining in the five phased S-curve flexible acceleration/deceleration control. The control method was extended to adapt high-speed machining. Chapter four is about the software development and implementation of CNC system. The structure and real-time mission design was built. And then the data process of the software system was explained. Chapter five is about the integration of the software system. Then proved the five phased S-curve flexible acceleration/deceleration control method could increase the flexibility of the system, and impact could be reduced with simulation results. At last, the said control method was compared with liner acceleration/deceleration and Curve acceleration/deceleration control method in comprehensive experiment, which showed that the five phased S-curve flexible acceleration/deceleration control method has a good combination property in speed control. Chapter six, also the last chapter, summarizes the study progress in whole paper and expecting the development of NC system later.