随机数据积分的误差分析及改进方法  

Error Analysis and Improvement Method of Random Data Integration

作　　者：邹学利[1] 翟疆 张生鹏[1] ZOU Xue-li;ZHAI Jiang;ZHANG Sheng-peng(Aerospace Science & Industry Corp Defense Technology R&T Center,Beijing 100854)

机构地区：[1]航天科工防御技术研究试验中心,北京100854

出　　处：《环境技术》2018年第6期87-93,共7页Environmental Technology

摘　　要：本文提出了一种验证随机振动信号时域积分精度的方法,利用该方法证实了时域积分误差的存在,并对降低积分误差的方法进行了研究。给出了两种提高积分精度的方法,即时域插值积分法和频域积分法,简述了两种方法的基本原理、在提高积分精度上的作用以及适用的范围,并通过实例进行了验证。A method for verifying time-domain integration accuracy of random vibration signals was proposed and the existence of time-domain integration error was verified by this method.The solutions of reducing integral error was studied,and two methods to improve the integration accuracy were given,which were time domain interpolation integration method and frequency domain integration method.This paper simply described the basic principles of these two methods,the role of them in improving the integration accuracy and the scope of application.Finally,they were proved to be correct by an example.

关 键 词：随机数据 时域积分 频域积分 时域插值 

分 类 号：V217[航空宇航科学与技术—航空宇航推进理论与工程]