【摘要】 提出利用相邻波峰和波谷之间距离估计阻尼比的割线方法。研究表明,与传统的对数衰减法相比,新方法无须确定基线,估计结果对基线漂移和低频干扰不敏感。更多还原

【Abstract】 A new damping estimation method,the secant line method,was presented,that is based on the distance of neighbor peaks and valley of oscillation.The studies show that compared with the conventional logarithmic decrement method,this method need not to determine the baseline,and is insensitive to baseline drift and low frequency interference.更多还原