摘要
接触网的平顺性直接影响弓网的受流性能,一般根据受电弓弓头垂直冲击加速度的最大值是否大于预先给定的门槛值判定接触网是否有大的不平顺,即硬点。提出利用模糊聚类方法(FCM)计算判定硬点的门槛值。为了消除速度对弓头垂直冲击加速度的最大值的影响,利用线性回归方法对以跨为单位得到的弓头垂直冲击加速度的最大值样本进行速度等效化。分析结果表明,利用模糊聚类方法得到的评判硬点的门槛值是合理的。
The suitability of catenary directly affects the performance of current collecting between the pantogragh and catenary, in a general way whether the catenary has large unsuitability, namely hard spot,is depended on which if the maximum associated with the vertical impact acceleration of pan- head within each segment is larger than a given threshold,it is calculated by fuzzy c- mean algorithm. Linear regression is used to equal the speed, which eliminates the influence of speed on the maximum associated with the vertical impact acceleration of pan - head. The result shows that threshold of the hard spot calculated by FCM algorithm is reasonable.
出处
《现代电子技术》
2009年第5期146-148,共3页
Modern Electronics Technique
基金
铁道部科技司基金资助项目(2007YF06)
关键词
接触网
硬点
模糊聚类方法
线性回归
门槛值
catenary
hard spot
fuzzy c - mean algorithm
linear regression
threshold
