摘要
在基于加速度计阵列的舰船波浪运动检测方法中,为了解决将加速度积分成速度与位移这一工程难题,构建了加速度数据检测船舶波浪运动模拟试验系统,通过对加速度计零漂动态过程特性和统计规律的分析,选择了合适的加速度计。通过对检测的加速度数据进行傅立叶变换和频谱分析建立了仿真加速度函数,分析了检测的加速度数据简单时域积分中的直流分量、积分常数项、低频分量和高频分量的影响及消除措施。提出了频域滤波后时域积分处理方法和频域通带滤波的积分处理方法。结果表明:频域通带滤波的积分处理方法可对舰船波浪运动检测的加速度有效地积分成速度和位移。
In order to solve the key technical problems, that is, the integration of the acquiring acceleration data in the measuring system of ships wave movement based on accelerometer array, the experimental platform for measuring and processing the acceleration of the ship wave movement is set up. By analyzing the dynamic processes and statistic properties of the accelerometers zero drift, suitable accelerometers is selected. By Fourier transform and spectral analysis, simulative function of the measured acceleration is built up. The influence and the elimination measures of direct-current component, integral constant item, low-frequency component and high-frequency component in simple time-domain integral are analyzed. The integral methods of acceleration data in time domain and in frequency domain are put forth. The experiments show that the methods are very successful.
出处
《中国造船》
EI
CSCD
北大核心
2011年第3期83-90,共8页
Shipbuilding of China
关键词
船舶
舰船工程
波浪运动
加速度
傅立叶变换
时域积分
频域积分
ship engineering
wave movement
acceleration
integral
Fourier transform
sensor
time-domain integral
frequency-domain integral
.
