# Sampled data system

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In [systems science](/source/Systems_science), a **sampled-data system** is a [control system](/source/Control_system) in which a continuous-time [plant](/source/Plant_(control_theory)) is controlled with a digital device. Under periodic [sampling](/source/Sampling_(signal_processing)), the sampled-data system is time-varying but also periodic; thus, it may be modeled by a simplified discrete-time system obtained by discretizing the plant. However, this discrete model does not capture the inter-sample behavior of the real system, which may be critical in a number of applications.

The analysis of sampled-data systems incorporating full-time information leads to challenging control problems with a rich mathematical structure. Many of these problems have only been solved recently.

## References

- Chen, Tongwen; Bruce Francis (1995). *Optimal sampled -data control systems*. London: Springer-Verlag. [ISBN](/source/ISBN_(identifier)) [3-540-19949-7](https://en.wikipedia.org/wiki/Special:BookSources/3-540-19949-7).

- Zhang, Xiaotian; Spencer, J. W. (2011). "Linear Voltage Control Scheme with Duty-Ratio Feedforward for Digitally Controlled Parallel Inverters". *IEEE Transactions on Power Electronics*. **26** (12): 3642. [Bibcode](/source/Bibcode_(identifier)):[2011ITPE...26.3642Z](https://ui.adsabs.harvard.edu/abs/2011ITPE...26.3642Z). [doi](/source/Doi_(identifier)):[10.1109/TPEL.2011.2157834](https://doi.org/10.1109%2FTPEL.2011.2157834). [ISSN](/source/ISSN_(identifier)) [0885-8993](https://search.worldcat.org/issn/0885-8993). [S2CID](/source/S2CID_(identifier)) [25685784](https://api.semanticscholar.org/CorpusID:25685784).

## External links

- [Digital control](/source/Digital_control)

- [Sampling (signal processing)](/source/Sampling_(signal_processing))

- [Discretization](/source/Discretization)

Wikibooks has a book on the topic of: ***[Control Systems/Sampled_Data_Systems](https://en.wikibooks.org/wiki/Control_Systems/Sampled_Data_Systems)***

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