Data-based system representations from irregularly measured data
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866913419880300544 |
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| author | Alsalti, Mohammad Markovsky, Ivan Lopez, Victor G. Müller, Matthias A. |
| author_facet | Alsalti, Mohammad Markovsky, Ivan Lopez, Victor G. Müller, Matthias A. |
| contents | Non-parametric representations of dynamical systems based on the image of a Hankel matrix of data are extensively used for data-driven control. However, if samples of data are missing, obtaining such representations becomes a difficult task. By exploiting the kernel structure of Hankel matrices of irregularly measured data generated by a linear time-invariant system, we provide computational methods for which any complete finite-length behavior of the system can be obtained. For the special case of periodically missing outputs, we provide conditions on the input such that the former result is guaranteed. In the presence of noise in the data, our method returns an approximate finite-length behavior of the system. We illustrate our result with several examples, including its use for approximate data completion in real-world applications and compare it to alternative methods. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_11589 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Data-based system representations from irregularly measured data Alsalti, Mohammad Markovsky, Ivan Lopez, Victor G. Müller, Matthias A. Systems and Control Optimization and Control Non-parametric representations of dynamical systems based on the image of a Hankel matrix of data are extensively used for data-driven control. However, if samples of data are missing, obtaining such representations becomes a difficult task. By exploiting the kernel structure of Hankel matrices of irregularly measured data generated by a linear time-invariant system, we provide computational methods for which any complete finite-length behavior of the system can be obtained. For the special case of periodically missing outputs, we provide conditions on the input such that the former result is guaranteed. In the presence of noise in the data, our method returns an approximate finite-length behavior of the system. We illustrate our result with several examples, including its use for approximate data completion in real-world applications and compare it to alternative methods. |
| title | Data-based system representations from irregularly measured data |
| topic | Systems and Control Optimization and Control |
| url | https://arxiv.org/abs/2307.11589 |