Performance analysis of multirate systems:A direct frequency-domain identification approach
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| Title: | Performance analysis of multirate systems:A direct frequency-domain identification approach |
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| Authors: | van Haren, Max, Blanken, Lennart L.G., Oomen, Tom A.E. |
| Source: | van Haren, M, Blanken, L L G & Oomen, T A E 2025, 'Performance analysis of multirate systems : A direct frequency-domain identification approach', Mechanical Systems and Signal Processing, vol. 235, 112843. https://doi.org/10.1016/j.ymssp.2025.112843 |
| Publication Year: | 2025 |
| Subject Terms: | Frequency-domain models, Local modeling, Multirate systems, Sampled-data systems, System identification, Time-invariant representations |
| Description: | Frequency-domain performance analysis of intersample behavior in sampled-data and multirate systems is challenging due to the lack of a frequency-separation principle, and systematic identification techniques are lacking. The aim of this paper is to develop an efficient technique for identifying the full intersample performance in the frequency-domain for closed-loop multirate systems, in particular the Performance Frequency Gain (PFG). Through local modeling techniques, aliased frequency components are effectively disentangled when identifying the PFG, which is directly facilitated by frequency-lifting the multirate system to a multivariable time-invariant representation. The developed method accurately and directly identifies the PFG in a single identification experiment. Finally, the developed method is experimentally validated on a prototype motion system, showing accurate identification of frequency-domain representations for the multirate system, including the PFG. |
| Document Type: | article in journal/newspaper |
| File Description: | application/pdf |
| Language: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pissn/0888-3270 |
| DOI: | 10.1016/j.ymssp.2025.112843 |
| Availability: | https://research.tue.nl/en/publications/5d452d77-fa85-4aeb-b8d2-cd59016fd1b2 https://doi.org/10.1016/j.ymssp.2025.112843 https://pure.tue.nl/ws/files/359391637/DirectPFGID.pdf https://pure.tue.nl/ws/files/359398832/1-s2.0-S0888327025005448-main.pdf https://www.scopus.com/pages/publications/105006699286 |
| Rights: | info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by-nc-nd/4.0/ ; http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: | edsbas.FB1684EE |
| Database: | BASE |
Nájsť tento článok vo Web of Science | Abstract: | Frequency-domain performance analysis of intersample behavior in sampled-data and multirate systems is challenging due to the lack of a frequency-separation principle, and systematic identification techniques are lacking. The aim of this paper is to develop an efficient technique for identifying the full intersample performance in the frequency-domain for closed-loop multirate systems, in particular the Performance Frequency Gain (PFG). Through local modeling techniques, aliased frequency components are effectively disentangled when identifying the PFG, which is directly facilitated by frequency-lifting the multirate system to a multivariable time-invariant representation. The developed method accurately and directly identifies the PFG in a single identification experiment. Finally, the developed method is experimentally validated on a prototype motion system, showing accurate identification of frequency-domain representations for the multirate system, including the PFG. |
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| DOI: | 10.1016/j.ymssp.2025.112843 |