Real-time variable feedrate parametric interpolator for CNC machining

Chung Wei Cheng, Mi-Ching Tsai, Ming-Yang Cheng

研究成果: Conference article

4 引文 斯高帕斯(Scopus)


This study explores the feasibility of variable feedrate parametric interpolators for real-time motion command generation using a digital signal processor (DSP). Most of the existing parametric interpolators are developed for a constant federate due to the computational complexity. However in certain applications, in order reduce the deterioration in accuracy of machining, feedrate commands should be performed in advance to overcome excessive acceleration/deceleration of CNC machines. The aim of this study is to develop a real-time parametric interpolator with variable federate where acceleration/deceleration planning on the feedrate command is performed before the interpolation takes place. This approach that would provide new capabilities for advanced CAD/CAM systems, can compensate for the path command error caused by the acceleration/deceleration after interpolation. To justify the performance of the real-time control interpolator, an X-Y table driven by two servomotors is controlled to track a parametric curve represented in non-uniform rational B-Spline (NURBS) form.

頁(從 - 到)109-114
期刊IFAC Proceedings Volumes (IFAC-PapersOnline)
出版狀態Published - 2002 一月 1
事件15th World Congress of the International Federation of Automatic Control, 2002 - Barcelona, Spain
持續時間: 2002 七月 212002 七月 26


All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering