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文章编号: 16726987(2019)04000124; DOI: 10.16351/j.16726987.2019.04.001
丁锋1,2, 徐玲1, 刘喜梅2(1.江南大学 物联网工程学院,江苏 无锡 214122;2.青岛科技大学 自动化与电子工程学院,山东 青岛 266061)
摘要: 利用系统的频率特性观测数据,研究和提出一般传递函数参数的递推辨识方法,包括投影辨识方法、随机梯度辨识方法、多新息随机梯度辨识方法、递推梯度辨识方法、多新息递推梯度辨识方法、递推最小二乘辨识方法、多新息最小二乘辨识方法,以及联合递推辨识方法和耦合递推辨识方法。文中的方法是针对一般传递函数提出的,因此也适合有共轭极点、重极点线性时不变系统的参数辨识。
关键词: 传递函数; 参数估计; 递推辨识; 频率特性; 梯度搜索; 多新息辨识; 耦合辨识
中图分类号: TP 273文献标志码: A
引用格式: 丁锋, 徐玲, 刘喜梅. 传递函数辨识(9):基于频率响应的递推参数估计方法\[J\]. 青岛科技大学学报(自然科学版), 2019, 40(4): 124.
DING Feng, XU Ling, LIU Ximei. Transfer function identification. Part I: Recursive parameter estimation methods based on the frequency characteristics\[J\]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2019, 40(4):124.
Transfer Function Identification. Part I:
Recursive Parameter Estimation Methods Based on the Frequency Characteristics
DING Feng1,2, XU Ling1, LIU Ximei2
(1.School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China;
2.College of Automation and Electronic Engineering,Qingdao University of Science and Technology,Qingdao 266061,China)
Abstract: Based on the observation data of frequency characteristics of the systems,this paper studies and puts forward the recursive parameter identification methods for general transfer functions,including the projection identification algorithms,the stochastic gradient identification methods,the multiinnovation stochastic gradient identification methoda,the recursive gradient identification methods,the multiinnovation recursive gradient identification methods,the recursive least squares identification methods,the multiinnovation least squares identification methods,as well as the joint recursive identification methods and the coupled recursive identification methods. The methods in this paper are proposed for general transfer functions,so it is suitable for the parameter identification of linear timeinvariant systems with conjugate poles and same poles.
Key words: transfer function; parameter estimation; recursive identification; frequency response; gradient search; multiinnovation identification; coupled identification
收稿日期: 20190611
基金项目: 国家自然科学基金项目(61873111).
作者简介: 丁锋(1963—),男,博士,“泰山学者”特聘教授,博士生导师.