【摘要】 对加速度信号时域积分误差和频域积分误差进行了理论分析,对比了时域积分和频域积分的积分位移,结果表明频域积分相比时域积分更加稳定,误差更小。基于低频截止的频域积分法,提出了能量补偿频域积分法,应用实例计算结果说明该方法能够在保持积分位移信号稳定的前提下较好地补偿频域积分位移的响应幅值,能够满足工程分析及应用的需要。更多还原

【Abstract】 Theory analysis on time-domain integral error and frequency-domain integral error of acceleration is proceeded. It indicates that frequency-domain integral is more robust and has less integral error than time-domain integral through the comparison of displacement with the two integral methods. Based on the low-frequency-pass integral method in frequency-domain,the energy retrieved frequency-domain integral method which retrieves the integral displacement amplitude by an energy transfer coefficient is presented. This method can get good and robust integral displacement with actual measured acceleration signal which satisfies the requrement of engineering analysis and application.更多还原