Data-Driven Control of Linear Systems via Quantized Feedback

LI Xingchen, ZHAO Feiran, YOU Keyou

Journal of Systems Science & Complexity ›› 2024, Vol. 37 ›› Issue (1) : 152-168.

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Journal of Systems Science & Complexity ›› 2024, Vol. 37 ›› Issue (1) : 152-168. DOI: 10.1007/s11424-024-3452-1

Data-Driven Control of Linear Systems via Quantized Feedback

  • LI Xingchen, ZHAO Feiran, YOU Keyou
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Abstract

Quantized feedback control is fundamental to system synthesis with limited communication capacity. In sharp contrast to the existing literature on quantized control which requires an explicit dynamical model, the authors study the quadratic stabilization and performance control problems with logarithmically quantized feedback in a direct data-driven framework, where the system state matrix is not exactly known and instead, belongs to an ambiguity set that is directly constructed from a finite number of noisy system data. To this end, the authors firstly establish sufficient and necessary conditions via linear matrix inequalities for the existence of a common quantized controller that achieves our control objectives over the ambiguity set. Then, the authors provide necessary conditions on the data for the solvability of the LMIs, and determine the coarsest quantization density via semi-definite programming. The theoretical results are validated through numerical examples.

Key words

Data-driven control / linear matrix inequalities / linear systems / quantized control

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LI Xingchen , ZHAO Feiran , YOU Keyou. Data-Driven Control of Linear Systems via Quantized Feedback. Journal of Systems Science & Complexity, 2024, 37(1): 152-168 https://doi.org/10.1007/s11424-024-3452-1

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Funding

This research was supported by The research was supported by National Key R&D Program of China under Grant No. 2022ZD0116700, National Natural Science Foundation of China under Grant Nos. 62033006 and 62325305.
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