郑州大学学报（工学版）2011，Vol.32Issue(6)：92-95,100,5.
泵车疲劳损伤计算中的奇异值剔除方法
A Method of Removing Singular Values in Calculation of Fatigue Damage for Truck Mounted Concrete Pump
摘要
Abstract
Singular values in strain data have a significant iMPact on the result when calculating fatigue damage for truck mounted concrete pump. However, the determining value of traditional 3er-rule is a constant coefficient, which is not suitable for the variation of truck mounted concrete pump strain signal. Therefore, combined with the characteristics of truck mounted concrete pump strain signal, a new method of removing singular value based on the variation rate is proposed. Singular values are determined by whether variation rate of strain signal is out of removing range decided by variation of strain signal. Singular values are revised according to the extent that singular values deviate from the normal range. The variation rate method is presented in detail. The simulation result using Matlab shows that the variation rate method is more effective than 3tr-rule in removing isolated singular values of strain signal. What is more, the method also works well in the case that there are not too many consecutive singular values in the strain data.关键词
混凝土泵车/剔除奇异值/3σ准则/变化率法/疲劳损伤Key words
truck mounted concrete pump/ singular value removal/ 3er-rule/ method of variation rate/ fatigue damage分类
建筑与水利引用本文复制引用
吴运新,胡凡,滑广军..泵车疲劳损伤计算中的奇异值剔除方法[J].郑州大学学报（工学版）,2011,32(6):92-95,100,5.基金项目
国家高技术研究发展计划(863计划)项目(2008 AA042801,2008AA042802) （863计划）
