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基于EMD的加速度信号积分变换 被引量:4

Acceleration integration transformation based on EMD
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摘要 针对所测得的加速度信号通过直接积分变换为速度信号或位移信号时精度不够的缺点,本文提出了基于FFT时频转换和EMD自适应滤波的积分变换新方法。通过对海浪模拟信号的仿真,实验结果表明,该方法可以有效实现测量信号的高精度积分变换,为实际信号的测量提供了新的有效方法。 Aiming at the shortcoming of less precision in transforming measured acceleration signal to velocity or to elevation signal,this paper presents a new method of integration transformation based on FFT time-domain transformation and EMD self-adaptive filter.Simulation result of wave signal demonstrates the high precision of this method in acceleration integration transformation and indicates this method is effective for practical measurement.
作者 蔡烽 王大元
出处 《仪器仪表学报》 EI CAS CSCD 北大核心 2006年第z1期12-13,共2页 Chinese Journal of Scientific Instrument
基金 国家自然科学基金(60572160) 海军大连舰艇学院科研发展基金
关键词 Empirical MODE DECOMPOSITION FFT 加速度 积分变换 empirical mode decomposition FFT acceleration integration transformation
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