Title :
Research on a Real-time Interpolator DSPs Based for NURBS
Author :
Liu, Ning ; Wang, Gao ; Zou, Yanbiao ; Xie, Cunxi ; Zhang, Tie
Author_Institution :
Coll. of Mech. Eng., South China Univ. of Technol., Guangzhou
Abstract :
Non-uniform rational B-spline (NURBS) curves are fit for representation of motion trajectory. It is popular that digital signal processor (DSP) is used as computerized numerical control (CNC) and motion controller. But existing NURBS algorithms is not configured to meet different speed and precision requirements in different applications, and computation burden of the interpolation is too much for single DSP motion control system. A configurable NURBS interpolation flow and parallel motion control system are presented in this paper. And a two-phase pipeline mode NURBS interpolator with double TMS320F2812 CPUs was built. Configurable NURBS interpolation flows and interpolation tasks scheme strategy for the CPUs were tested in the system. Experimental results showed that configurable NURBS interpolation flows are feasible and the two-phase pipeline mode NURBS interpolator is successful
Keywords :
computerised numerical control; digital signal processing chips; motion control; parallel processing; splines (mathematics); DSP motion control system; NURBS algorithms; NURBS interpolation flow; computerized numerical control; configurable NURBS interpolation flows; digital signal processor; double TMS320F2812 CPUs; motion controller; motion trajectory representation; nonuniform rational B-spline curves; parallel motion control system; parallel processing; real-time interpolator; two-phase pipeline mode NURBS interpolator; Computer numerical control; Digital signal processing; Digital signal processors; Interpolation; Motion control; Pipelines; Signal processing algorithms; Spline; Surface reconstruction; Surface topography; DSPs; Interpolation; NURBS; Parallel processing;
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1713574
