摘要
为减轻弓网电弧的危害,研究了滑动速度、滑板往复速度对弓网电弧的运行形态的影响.利用弓网电弧实验系统,拍摄了不同速度条件下的弓网电弧图像.利用电弧面积和电弧周长表征电弧的形态特征.利用二维小波变换和sobel梯度算子进行图像去噪和边缘提取,进而计算电弧面积和周长.弓网电弧呈椭圆形,滑板与接触网导线的高速相对运动会对电弧产生拉伸作用;滑动速度和滑板往复速度对电弧形态的影响较大,滑动速度较低时,电弧面积和周长具有相同的变化趋势.随着滑动速度或滑板往复速度的增加,间隙开距变小,导致电弧面积减小,电弧形态变化较慢.
To reduce the harm of pantograph arc,the effect of both sliding speed and reciprocating speed of slide on arc morphology was studied.The pantograph arc images under different speed conditions were obtained with pantograph-arc experimental system.Both arc area and arc perimeter were used to represent the morphological characteristics of pantograph arc.The arc image was de-noised with two dimension wavelet transform and its edge was extracted with sobel gradient operator.Pantograph arc is ellipse and will be stretched due to the high-speed relative motion of electrode.Sliding speed and reciprocating speed have great effect on arc morphology.Both arc area and arc perimeter have the same variation trend at lower sliding speed.With the increase of sliding speed or reciprocating speed,arc area becomes smaller and the change of arc morphology is slower because of smaller and smaller electrode separation.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2018年第3期621-626,共6页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金(51277090)
辽宁省教育厅基金(LJYL015)
关键词
弓网电弧
电弧图像
运动特性
滑动电接触
边缘提取
pantograph arc
arc image
motion characteristics
sliding electrical contact
edge extraction
