时频分析在船载天线和船舶动力系统故障诊断中的应用  

Application of Time Frequency Technology in Failure Diagnostication of Shipborne Antennas and Drive System

作　　者：李康[1] 陈雪军[1] 石湘[1] 陈海小[1] 胡湘江[1] 陈略[2] 

机构地区：[1]中国卫星海上测控部,江阴214431 [2]北京航天飞行控制中心,北京100094

出　　处：《遥测遥控》2011年第4期33-40,共8页Journal of Telemetry,Tracking and Command

基　　金：载人航天领域预先研究项目资助

摘　　要：针对船载天线传动链和船舶动力系统故障几率高这一问题,构想和简要设计基于IP网和卫星通信技术的远程故障监测诊断系统,分析时域统计量分析、Hilbert包络谱、Hilbert-Huang变换、平移不变多小波相邻系数降噪等振动信号时域和时频域分析工具的基本原理,并将其应用到船载卫通天线传动机构的故障定位诊断中,成功诊断出船载卫通天线传动链振动异常的原因,为船载天线传动链和船舶动力系统的故障监测和定位提供有效的分析方法,为船载装备故障预知维修打下基础。Aiming at the problem that the shipborne antennas and drive system easily occur failure,failure monitor and diagnosis system based on IP network and satellite communication technology is conceived and briefly designed.Principles of time-domain analytical method,demodulation with Hilbert transform and Hilbert-Huang transform,and denoising method using shrinkage of shift-invariability multi-wavelet's neighborhood coefficients,are analyzed.These time-domain and time-frequency domain libration signal processing methods are successfully used to point out the failure location of drive system for satellite-communication antenna on vessel.The analysis method and failure criterion of failure location for drive system of satellite-communication antenna are supplied for the future.

关 键 词：船载卫通天线 IP网 卫星通信 时频分析 行星减速器 

分 类 号：U672[交通运输工程—船舶及航道工程]