Sampled data system

In systems science, a sampled-data system is a control system in which a continuous-time plant is controlled with a digital device. Under periodic sampling, 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 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. doi:10.1109/TPEL.2011.2157834. ISSN 0885-8993. Bibcode: 2011ITPE...26.3642Z. 

External links

• Digital control
• Sampling (signal processing)
• Discretization