Trajectory control of PCB high-speed signal lines based on B-spline dynamical fitting method

Abstract

Abstract: Through the study of the high-speed signal PCB（Printed Circuit Board） layout in the structure of the signal trace, for needs of smooth and controllable in PCB layout of high-speed digital server motherboard system, this paper proposes a three degree quasi-uniform B-spline dynamical fitting method. By reading overlap shape points in batches, property of high-speed signal traces with whole three degree quasi-uniform B-spline is realized. Through circuit debugging simulation, this dynamic fitting algorithm reduces high-speed signal attenuation effectively.

Key words: dynamical B-spline, curve fitting, high-speed signal, trajectory control

摘要： 通过对实际高速信号PCB（Printed Circuit Board）布线中走线结构的研究，针对高速数字化服务器主板系统设计中PCB布线路径平滑可控的需要，提出一种基于B样条曲线的动态拟合算法，该算法采用型值点分批重叠求交算法原理，实现高速信号走线的动态拟合，实现PCB布线轨迹的整体准均匀B样条的性质。通过电路调试仿真，该动态拟合算法有效降低了高速信号衰减。

关键词: 动态B样条, 曲线拟合, 高速信号, 轨迹控制

LIU Tao. Trajectory control of PCB high-speed signal lines based on B-spline dynamical fitting method[J]. Computer Engineering and Applications, 2012, 48(17): 76-79.

刘涛. 基于B样条动态拟合的PCB高速信号线轨迹控制[J]. 计算机工程与应用, 2012, 48(17): 76-79.

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Trajectory control of PCB high-speed signal lines based on B-spline dynamical fitting method

基于B样条动态拟合的PCB高速信号线轨迹控制

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