- Title
- On networked control architectures for MIMO plants
- Creator
- Silva, Eduardo I.; Goodwin, Graham C.; Quevedo, Daniel E.
- Relation
- 17th World Congress of the International Federation of Automatic Control (IFAC 2008). Proceedings of the 17th World Congress of the International Federation of Automatic Control (Seoul, Korea 6-11 July, 2008) p. 8044-8049
- Relation
- http://www.ifac-papersonline.net/Detailed/37059.html
- Publisher
- IFAC
- Resource Type
- conference paper
- Date
- 2008
- Description
- In this work we focus on control of MIMO LTI plants and explore the potential benefits of replacing a traditional diagonal non-networked control architecture with a networked full MIMO one. Diagonal terms of the networked MIMO architecture employ transparent links, whereas the off-diagonal terms use communication channels which are subject to signal-to-noise ratio constraints. Within this setup, we show how to design LTI coding systems which optimize overall performance. Unsurprisingly, for high-quality channels the full MIMO architecture is preferable to decentralized architectures. However, our analysis reveals that the achievable performance in the networked situation may become arbitrarily poor, if the signal-to-noise ratio constraints in the communication links are sufficiently severe. In these cases, traditional decentralized controller structures are preferable. In the present work, we limit our analysis to the two-input two-output case and illustrate our results for networked control systems with bit-rate limited communication channels.
- Subject
- control over networks; control under communication constraints; decentralization
- Identifier
- uon:6110
- Identifier
- http://hdl.handle.net/1959.13/802509
- Identifier
- ISBN:9781123478902
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