CAJ | 학술논문

通过分析飞行记录参数奇异点的特点及产生原因,建立了奇异点在某一时间区域内连续信号的数学描述.在软件设计中应用奈奎斯特定律确定数据段窗口的大小、Matlab仿真技术、多项式和最小二乘法,检测偏移量是否超出规定阂值,提出了飞参系统记录数据的奇异值预处理的方法及软件设计思想;通过多机种多架次的大量飞行记录数据的实验,验证了采用多项式和最小二乘法是对飞参系统记录数据奇异值进行预处理的一种有效方法,对其他领域信号处理具有普遍适用性.
통과분석비행기록삼수기이점적특점급산생원인,건립료기이점재모일시간구역내련속신호적수학묘술.재연건설계중응용내규사특정률학정수거단창구적대소、Matlab방진기술、다항식화최소이승법,검측편이량시부초출규정애치,제출료비삼계통기록수거적기이치예처리적방법급연건설계사상;통과다궤충다가차적대량비행기록수거적실험,험증료채용다항식화최소이승법시대비삼계통기록수거기이치진행예처리적일충유효방법,대기타영역신호처리구유보편괄용성.
The paper establishes the continuous signal mathematical description of flight data strange points in one time domain by analyzing its features and causes. We Offset detection threshold exceeding the prescribed limit and put forward the method and software design process by polynomial fitting and the application of Nyquist's law to determine the size of the data segment window,Least-squares method and MATLAB simulation technique. Through large amounts of aeroengine recorded flight data experiment,is shows the polynomial fitting and least-squares method is effective for the pretreatment of strange points. Also it acquires a very good result and has widespread adaptability to other parameters dealing.