Frequency-domain representations of multirate systems are essential for controller design and performance evaluation of multirate systems and sampled-data control. The aim of this paper is to develop a time-efficient closed-loop identification approach for multirate systems in the frequency-domain. The developed method utilizes local polynomial modeling for lifted representations of LPTV systems, which enables direct identification of closed-loop multirate systems in a single identification experiment. Unlike LTI identification techniques, the developed method does not suffer from bias due to ignored LPTV dynamics. The developed approach is demonstrated on a multirate example, resulting in accurate and fast identification in the frequency domain.
|Title of host publication||Proceedings of the IEEE 61st Conference on Decision and Control (CDC 2022)|
|Publication status||Published - 2022|
|Event||IEEE 61st Conference on Decision and Control (CDC 2022) - Cancún, Mexico|
Duration: 6 Dec 2022 → 9 Dec 2022
|Conference||IEEE 61st Conference on Decision and Control (CDC 2022)|
|Period||6/12/22 → 9/12/22|
Bibliographical noteGreen Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
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- Performance evaluation
- Linear systems
- Time-frequency analysis
- Transfer functions
- Benchmark testing
- Control systems