【摘要】 本文将参数估计中的Cramer—Rao 限出了利用自由响应识别振动系统模态参数的下,模态参数对CR 限的影响。(以下简称CR 限)引入到振动系统参数识别中,得CR 限,并讨论了在获得一致无偏参数估计的情况更多还原

【Abstract】 In this peaper the Cramer-Rao limit is introduced into the parameter identif-ication of vibrating system.The Cramer-Rao limit of estimation of modal param-eters identified by free response of a vibrating system is obtained.In the caseof consisted unbiased the effects of modal parameter on Cramer-Rao limit isdiscussed in some detail.更多还原