Detectability conditions for output-only subspace identification

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-01-02 DOI:10.1080/13873954.2019.1701038

Amirali Sadeqi, S. Moradi, Kourosh Heidari Shirazi

引用次数: 7

Abstract

ABSTRACT The scope of output-only/blind identification is restricted to stochastic/statistical processes, but for the first time in this study, the detectability conditions for general output-only subspace identification are investigated. This aids the range of input sources to be extended in a much realistic manner, beyond the only stochastic inputs. For this purpose, the subspace framework is assigned to make a connection between the output signal contents and the LTI system order. A few substantial hypotheses and algebraic statements are propounded affirming the sufficiency of the genuine output sequences for the identification purpose. This can be perceived as the cornerstone of state-space model reconstruction. In order to consolidate the notions according to reality, several examples are studied and examined for different input classes with stochastic disturbance.

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纯输出子空间识别的可检测性条件

摘要纯输出/盲识别的范围仅限于随机/统计过程，但在本研究中，首次研究了一般纯输出子空间识别的可检测性条件。这有助于以非常现实的方式扩展输入源的范围，而不仅仅是随机输入。为此，子空间框架被分配来在输出信号内容和LTI系统顺序之间建立连接。提出了一些实质性的假设和代数陈述，肯定了真实输出序列对于识别目的的充分性。这可以被视为状态空间模型重建的基石。为了根据实际情况巩固这些概念，对具有随机扰动的不同输入类的几个例子进行了研究和检验。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.