未知结构的MIMO时滞系统的时间迟延估计

doi:10.16182/j.issn1004731x.joss.20-0034

系统仿真学报 ›› 2021, Vol. 33 ›› Issue (5): 1122-1132.doi: 10.16182/j.issn1004731x.joss.20-0034

未知结构的MIMO时滞系统的时间迟延估计

王旭光, 冯梦洁, 苏杰, 权家乐

华北电力大学自动化系,河北保定 071003

收稿日期:2020-01-10 修回日期:2020-04-20 出版日期:2021-05-18 发布日期:2021-06-09
作者简介:王旭光(1980-),男,博士,副教授,研究方向为系统参数辨识,图像内容理解。E-mail：wang_xuguang@163.com
基金资助:
国家自然科学基金(61472419,61472037); 中央高校基本科研业务费专项基金(2017MS128); 国家重点实验室开放课题(BUAA-VR-17KF-01)

Time-delay Estimation for MIMO Delay Systems with Unknown Structures

Wang Xuguang, Feng Mengjie, Su Jie, Quan Jiale

North China Electric Power University, Department of Automation, Baoding 071003, China

Received:2020-01-10 Revised:2020-04-20 Online:2021-05-18 Published:2021-06-09

摘要/Abstract

摘要： 在未知结构的动态时滞系统的建模任务中,由于时间迟延的污染,系统数据在时间轴上发生随机性的误匹配,导致系统建模精度低。提出一种适用于未知结构的MIMO (Multiple-Input Multiple-Output)时滞系统的时间迟延估计方法。从代数角度给出动态时滞系统的一般数学描述;定义了迟延相关函数,建立动态系统输入、输出信号与时间迟延的数量关系约束;基于迟延相关函数与时间迟延的数量关系提出了时间迟延的贪婪搜索算法。模拟实验和真实数据实验验证了所提方法的有效性。

关键词: 时间迟延, 迟延矩阵, 时滞系统, 迟延相关函数, 贪婪搜索算法

Abstract: In the unknown-structure delay system modeling, time-delays lead to a mismatch between the system inputs and outputs on the timeline and cause low system modeling accuracy. A time-delay estimation method is proposed for the unknown-structure MIMO (Multiple-Input Multiple-Output) delay systems. A general mathematical description is given from the algebraic point of view, the delay correlation function is defined, and a quantitative constraint between system input-output and time-delay is constructed. A greedy time-delay search algorithm is introduced based on the delay correlation function. Simulation experiments and real data experiments show the availability of the proposed method.

Key words: time-delay, delay matrix, delay system, delay correlation function, greedy search algorithm

中图分类号:

王旭光, 冯梦洁, 苏杰, 权家乐. 未知结构的MIMO时滞系统的时间迟延估计[J]. 系统仿真学报, 2021, 33(5): 1122-1132.

Wang Xuguang, Feng Mengjie, Su Jie, Quan Jiale. Time-delay Estimation for MIMO Delay Systems with Unknown Structures[J]. Journal of System Simulation, 2021, 33(5): 1122-1132.

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未知结构的MIMO时滞系统的时间迟延估计

Time-delay Estimation for MIMO Delay Systems with Unknown Structures

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