基于改进的Prony方法的包装系统参数识别  

Parameter Identification of Packaging System with Modified Prony Method

作　　者：朱大鹏[1,2] 周世生[1] 张志昆[2] 

机构地区：[1]西安理工大学,西安710048 [2]兰州交通大学,兰州730070

出　　处：《包装工程》2009年第10期84-86,共3页Packaging Engineering

基　　金：甘肃省自然科学基金B类项目(2008GS02622);甘肃省科技厅科技支撑计划项目(0804GKCA037)

摘　　要：考虑到包装系统的复杂性,将包装系统的自由响应看作是多个模态的自由响应之和。采用基于奇异值分解的方法求出系统的阶数,消除自由响应中噪声的影响。采用高阶Prony方法可实现系统零点的聚集,同时采用前向预测和后向预测的方法,可把系统零点的聚集和噪声引起的零点的聚集区分开来。该方法可用于识别包装系统自由响应的各模态参数,为全面了解包装系统打下基础。The free response of packaging system was modeled as the sum of free response of multi-- modal system taking the complexity of packaging system into account. The number of the orders was determined using the method based on singular value decomposition; the effect of the noise in the signal on parameters identification was eliminated. The signal zeros were clustered using Prony method with higher order; the signal zeros caused by noise and zeros caused by system medal can be separated using both for ward and backward prediction. The method can he used to identify the modal parameters of packaging system, and provides detailed information of the packaging system.

关 键 词：改进的Prony方法 奇异值分解 参数识别 

分 类 号：TB485.3[一般工业技术—包装工程] TB487