- Title
- Packetized predictive control for rate-limited networks via sparse representation
- Creator
- Nagahara, Masaaki; Quevedo, Daniel E.; Østergaard, Jan
- Relation
- IEEE 51st Annual Conference on Decision and Control (CDC 2012). Proceedings of the 51st IEEE Conference on Decision and Control (Maui, HI 10-13 December, 2012) p. 1362-1367
- Relation
- ARC.DP0988601
- Publisher Link
- http://dx.doi.org/10.1109/CDC.2012.6426647
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2012
- Description
- We study a networked control architecture for linear time-invariant plants in which an unreliable data-rate limited network is placed between the controller and the plant input. The distinguishing aspect of the situation at hand is that an unreliable data-rate limited network is placed between controller and the plant input. To achieve robustness with respect to dropouts, the controller transmits data packets containing plant input predictions, which minimize a finite horizon cost function. In our formulation, we design sparse packets for rate-limited networks, by adopting an an ℓ0 optimization, which can be effectively solved by an orthogonal matching pursuit method. Our formulation ensures asymptotic stability of the control loop in the presence of bounded packet dropouts. Simulation results indicate that the proposed controller provides sparse control packets, thereby giving bit-rate reductions for the case of memoryless scalar coding schemes when compared to the use of, more common, quadratic cost functions, as in linear quadratic (LQ) control.
- Subject
- asymptotic stability; compressed sensing; matching pursuit algorithms; networked control systems
- Identifier
- http://hdl.handle.net/1959.13/1303922
- Identifier
- uon:20761
- Identifier
- ISBN:9781467320658
- Identifier
- ISSN:0743-1546
- Language
- eng
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