基于子空间的多率控制系统闭环辨识

王佳; 王宏伟; 夏浩; 顾宏

doi:10.13976/j.cnki.xk.2014.0583

基于子空间的多率控制系统闭环辨识

王佳^1,2, ,,
王宏伟¹,
夏浩¹,
顾宏¹

1.
大连理工大学控制科学与工程学院, 辽宁大连 116023
2.
大连医科大学生物技术系, 辽宁大连 116044

详细信息

作者简介:
王佳（1984-），女，博士，讲师．研究领域为系统辨识，故障检测．
王宏伟（1969-），男，博士，副教授．研究领域为模式识别，鲁棒控制．
夏浩（1969-），男，博士，教授．研究领域为复杂系统的控制与检测等．

通讯作者:
王佳，jiawang@mail.dlut.edu.cn

中图分类号: TP182
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出版历程
- 收稿日期: 2013-07-07
- 修回日期: 2014-03-24
- 发布日期: 2014-10-19

Subspace-based Closed-loop Identification of Multirate Control System

1.
School of Control Science and Engineering, Dalian University of Technology, Dalian 116023, China
2.
Biotechnology Department, Dalian Medical University, Dalian 116044, China

摘要

摘要: 针对一类多率控制系统，在控制器信息未知且反馈存在的情形下，采用子空间辨识方法建立闭环系统中被控对象的离散状态空间模型．在模型参数化的过程中，为了避免由于提升技术导致的非因果项列入辨识模型中，通过因果约束分析得到广义因果模型．基于状态辅助变量关系，构造最小二乘问题并利用奇异值分解求解状态序列估计，同时给出了系统矩阵的计算方法．最后，通过数值仿真实验验证了提出方法的有效性．
- 子空间辨识 /
- 多率控制系统 /
- 因果约束 /
- 提升技术
Abstract: In accordance with a class of multi-rate control systems, a subspace identification method is used to identify the discrete state-space model of the controlled object in closed-loop systems under feedback while there is no information about the controller. In order to avoid the inclusion of non-causal terms in the identified model, the generalized causal model is obtained through the analysis of causality constraints during the process of model parameterization. Then, based on the relationship of the instrumental variable, the least squares problem is developed and the state sequence estimation is solved by singular values decomposition. Meanwhile, the computation of the system matrices is given. Finally, the numerical simulation illustrates the effectiveness of the proposed method.
- subspace identification /
- multirate control system /
- casuality constraint /
- lifting technique

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参考文献(20)

[1]	肖建. 多采样率数字控制系统[M]. 北京: 科学出版社, 2003. Xiao J. Multirate digital control system[M]. Beijing: Science Press, 2003.
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文章访问数: 1322
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基于子空间的多率控制系统闭环辨识

作者简介: 王佳（1984-），女，博士，讲师．研究领域为系统辨识，故障检测．王宏伟（1969-），男，博士，副教授．研究领域为模式识别，鲁棒控制．夏浩（1969-），男，博士，教授．研究领域为复杂系统的控制与检测等．

通讯作者: 王佳，jiawang@mail.dlut.edu.cn

计量

出版历程

Subspace-based Closed-loop Identification of Multirate Control System

计量

出版历程

目录

作者简介:
王佳（1984-），女，博士，讲师．研究领域为系统辨识，故障检测．
王宏伟（1969-），男，博士，副教授．研究领域为模式识别，鲁棒控制．
夏浩（1969-），男，博士，教授．研究领域为复杂系统的控制与检测等．

通讯作者:
王佳，jiawang@mail.dlut.edu.cn