Methods to Set Threshold Based on MATLAB

摘要：

　　In setting threshold to determine the arrival time in mechanical vibration signals which are collected by sensors and contain noise,five methods based on MATLAB have been proposed.Direct observation of the figure,powering operation to data,variance theory,reverse search and MATLAB programming has been used.Each methods merits and demerits will be discussed so that it can be varied according to different situations.Consistent results have been achieved by those methods.MATLAB code has also been presented for better understanding of the algorithm and reproduction.After this analysis,a systematic way of setting threshold (determining the arrival time) has been formed and these methods could actually be used in all similar data separation.

关键词： Threshold Arrival time Mechanical vibration signal MATLAB

作者: Xu Wang

作者单位: Flight Vehicle Design and Engineering, 2008, Honors School, Harbin Institute of Technology,China

会议类型: 国际会议

会议名称: the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

会议地点: 台湾

会议语种:英文

页码: 954-959

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）