CAJ | 학술논문

针对船舶耐波性试验采集数据量大，实时处理难的问题，基于Matlab平台，以低通滤波及empiri-cal mode decomposition （ EMD）为程序内核，以FFT-FS频谱细化技术为辅助分析工具，开发船舶性能试验数据处理系统，该系统能有效消除测量数据中的噪声，自动识别趋势项，高精度提取频域细化谱，并可执行海量数据的统计分析，以全面获取实测信号的时域及频域特征。
침대선박내파성시험채집수거량대，실시처리난적문제，기우Matlab평태，이저통려파급empiri-cal mode decomposition （ EMD）위정서내핵，이FFT-FS빈보세화기술위보조분석공구，개발선박성능시험수거처리계통，해계통능유효소제측량수거중적조성，자동식별추세항，고정도제취빈역세화보，병가집행해량수거적통계분석，이전면획취실측신호적시역급빈역특정。
Aiming at the problems of that the signals measured in the sea-keeping test are usually massive , making it diffi-cult to analysis in real time , a signal deposing system for the sea-keeping test was developed based on the Matlab .The low-pass signal filtering method , the empirical mode decomposition method and the FFT-FS method were applied to depose the signals . This system can remove noises and low-frequency trends in the signals automatically , obtain high accuracy frequency-amplitude information of the signals , and depose massive signals effectively .