动态载荷盲源识别系统设计及其LabVIEW实现  

Design of dynamic load blind identification system with LabVIEW realization

作　　者：马赛[1] 李舜酩[1] 郭海东[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《电子测量技术》2012年第7期51-54,共4页Electronic Measurement Technology

摘　　要：盲源分离可以从混叠的系统响应中识别出激励源信号的特征。针对结构参数未知的系统,结合盲源分离算法和模态分析法,提出一种基于模态参数盲辨识的载荷识别方法,并对简支梁系统进行实验验证。首先采集简支梁系统的冲击响应信号,利用盲辨识算法得到其有效模态参数,构建系统的模态模型;然后利用模态分析法识别其动态载荷。实验结果说明了该方法的实用性和正确性。Blind signal separation （BSS） can identify characteristics of incentive signal from aliasing responses. For systems with unknown structure parameters,combining blind signal separation algorithm and modal analysis method, a new method of load identification based on parameter blind recognition is proposed,and this method is used to identify dynamic load of simply supported beam system for experimental verification. First,collect the impulse response signal, acquire effective modal parameters with blind identification algorithm, establish modal model of the system; Then identify dynamic load with modal analysis method. Experimental results illustrate effectiveness and practicality of the method proposed.

关 键 词：盲源分离 载荷识别 LABVIEW 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]