欢迎访问《兵工学报》官方网站,今天是

兵工学报 ›› 2010, Vol. 31 ›› Issue (8): 1102-1105.

• 研究简报 • 上一篇    下一篇

两栖装甲车辆兴波阻力的计算及流场分析

邢志娜, 王菊香, 申刚, 叶勇, 刘洁   

  1. (海军航空工程学院 飞行器工程系, 山东 烟台 264001)
  • 收稿日期:2009-04-30 修回日期:2009-04-30 上线日期:2014-05-04
  • 通讯作者: 邢志娜 E-mail:xingna112@sina.com
  • 作者简介:邢志娜(1974—), 女, 副教授

Calculation of Wave-making Resistance and Analysis of Flow Field for Amphibious Armored Vehicles

XING Zhi-na, WANG Ju-xiang, SHEN Gang, YE Yong, LIU Jie   

  1. (Department of Airborne Vehicle Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, Shandong, China)
  • Received:2009-04-30 Revised:2009-04-30 Online:2014-05-04
  • Contact: XING Zhi-na E-mail:xingna112@sina.com

摘要: 针对建立近红外光谱定量分析的偏最小二乘校正模型时,存在变量多以及光谱复共线性多样化等问题,采用一种间隔组合偏最小二乘法(icPLS)的近红外光谱谱区选择方法用于建立航空煤油闭口闪点近红外光谱模型。通过与整个光谱参与建立的近红外光谱模型的分析比较,icPLS模型的预测均方根误差(RMSEP)和相关系数R2分别为1.08和0.808 8,而全谱偏最小二乘法(PLS)模型的RMSEP和R2分别为1.6和0.738 1. 实验结果表明,采用改进偏最小二乘法所建模型更稳定可靠, 预测结果也得到明显改善。

关键词: 分析化学, 近红外光谱分析技术, 间隔组合偏最小二乘法, 航空煤油

Abstract: In the near-infrared spectrum (NIR) quantitative analysis for propellant, the method of partial least squares is a good tool to establish the calibration model, but there are some problems, such as too much variables and variegated collinear of spectrum. A multivariate calibration modeling procedure called as interval and combination partial least square (icPLS) was applied to select the efficient spectral regions for building the flash point NIR model of aviation kerosene. The root mean square errors of prediction (RMSEP) and correlation coefficients (R2) of icPLS and whole spectral partial least squares (PLS) were 1.08, 0.808 8 and 1.6, 0.738 1, respectively. The comparison of two methods indicates that the icPLS is more robust and credible than PLS. Furthermore, icPLS model can give more stable and accurate prediction results.

Key words: analytical chemistry, near-infrared spectrum analysis, partial least squares, aviation kerosene

中图分类号: