The Application of Hilbert-Huang Transform in the Analysis of Flight Safety

• Main Authors: Neng-FaLin, 林能發
• Other Authors: Hung-Sying Jing
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/37001743377532699755

碩士 === 國立成功大學 === 民航研究所 === 101 === In this study, quantitative analysis of the flight from the point of view, by using “Hilbert-Huang Transform”, we translate the flight data into some Intrinsic Mode Function. These “Intrinsic Mode Function” represent different signal components. In this study we analysis of the four main parameters: height, speed, sedimentation rate, and N1. By comparing normal and accident flight, respectively, from the trend and beating degree of factor analysis of accident, further quantitative indicators as border incidents. Through the method of Hilbert-Huang Transform, we found that in Nagoya accident and Dayuan accident has different factors affecting crash. For Dayuan accident the cause of the crash aircraft mainly from the trend, this is the residual function. In Nagoya accident, the main signal from an accident suffered in the beating of the moment, which is Intrinsic Mode Function’s beating degree. In this study, through the overall concept, by finding out the geometric center and trend Analysis, we understand the different between the normal and accident flight. This study further to define the boundaries of an accident, as well as flight quantifiable indicators.