计算机工程与应用 ›› 2012, Vol. 48 ›› Issue (17): 76-79.

• 研发、设计、测试 • 上一篇    下一篇

基于B样条动态拟合的PCB高速信号线轨迹控制

刘  涛   

  1. 高效能服务器和存储技术国家重点实验室,济南 250101
  • 出版日期:2012-06-11 发布日期:2012-06-20

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

LIU Tao   

  1. State Key Laboratory of High-end Server & Storage Technology, Jinan 250101, China
  • Online:2012-06-11 Published:2012-06-20

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

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