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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Professor at the Institute of Advanced Measurement & Control Technology
其他任职：先进检测与控制技术研究所所长
性别：男
毕业院校：上海交通大学
学位：博士
所在单位：控制科学与工程学院
学科：控制理论与控制工程. 化学工程
办公地点：大连理工大学控制科学与工程学院先进检测与控制技术研究所
大连市凌工路2号大连理工大学海山楼A座724室
联系方式：Tel:(0411)84706465 实验室网站：http://act.dlut.edu.cn/
电子邮箱：tliu@dlut.edu.cn
基于新息估计和正交投影的闭环子空间模型辨识
点击次数：
发表时间：2016-01-01
发表刊物：自动化学报
期号：11
页面范围：1657-1663
ISSN号：0254-4156
摘要：In this paper, a closed-loop subspace model identification method using innovation estimation and orthogonal projection is proposed for closed-loop control systems. Firstly, a least-squares algorithm is adopted to estimate the innovation matrix via the vector autoregressive with exogenous inputs (VARX) model. Then, by performing an orthogonal pro jection of the observed input-output Hankel matrix onto the orthogonal complement space of innovation Hankel matrix to eliminate the influence from noise, the extended observability matrix and lower triangular block Toeplitz matrix are derived from the parity space of noise-free input-output data. Finally, the system matrices are retrieved by using a shift-invariant approach. The consistent estimation conditions are analyzed with a strict proof. A simulation example is shown to demonstrate the effectiveness and merit of the proposed method.
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