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	High-speed real-time interpolation of cubic uniform B-spline curve
	Zhao Tong ; Lv Qiang ; Zhang Hui ; Yang Kai-ming
	2010-10-12 ; 2010-10-12
关键词	Practical Theoretical or Mathematical/ computerised numerical control curve fitting interpolation machining parallel processing precision engineering splines (mathematics)/ real-time interpolation cubic uniform b-spline curve high-precision machining complicated curves feedrate planning interpolation algorithm look-ahead function overlapping combination method maximum machining velocity machining precision parallel threads b-spline interpolation planning unit interpolation GT100 computer numerical control system/ C7480 Production engineering computing C7420 Control engineering computing C4130 Interpolation and function approximation (numerical analysis) C6150N Distributed systems software E1520A Machining E0210L Numerical analysis E0410D Industrial applications of IT E1550 Control technology and theory
中文摘要	To meet the requirements of the high-speed and high-precision machining of complicated curves, a feedrate planning and interpolation algorithm for the cubic uniform b-spline curve based on the look-ahead function was studied. In this algorithm, an overlapping combination method was proposed to realize the smooth connection between adjacent B-spline segments. The formula for calculating the maximum machining velocity was also presented to guarantee the machining precision and to dynamically respond to the system. The idea of planning unit was introduced, based on which the feedrate planning and interpolation process was divided into four parallel threads: the B-spline interpolation, the partition of planning units, the feedrate planning, and the planning unit interpolation. By running these parallel threads, the high-speed real-time demand in the cubic uniform B-spline curve interpolation was satisfied. Finally, the validity of the algorithm was proved in the GT100 Computer Numerical Control (CNC) system.
语种	中文
出版者	Editorial Department of CIMS ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80270]
专题	清华大学
推荐引用方式 GB/T 7714	Zhao Tong,Lv Qiang,Zhang Hui,et al. High-speed real-time interpolation of cubic uniform B-spline curve[J],2010, 2010.
APA	Zhao Tong,Lv Qiang,Zhang Hui,&Yang Kai-ming.(2010).High-speed real-time interpolation of cubic uniform B-spline curve..
MLA	Zhao Tong,et al."High-speed real-time interpolation of cubic uniform B-spline curve".(2010).

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