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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/28639
- Best achievable tracking performance in sampled-data control systems
- In this paper we study the problem of tracking a step reference signal using sampled-data control systems. We investigate the best achievable tracking performance, where the performance is deemed best for it is the minimal attainable by all possible sampled-data stabilizing controllers. Our primary objective is to investigate the fundamental tracking performance limit in sampled-data systems, and to understand whether and how sampling and hold in a sampled-data system may impose intrinsic barriers to performance. For this purpose we derive an analytical expression for the optimal tracking performance. The result shows that a performance loss is generally incurred in a sampled-data system, in comparison to the tracking performance achievable by continuous-time controllers. This loss of performance, as so demonstrated by the expression, can be attributed to the non-minimum behaviors and the aliasing effects generated by samplers and hold devices.
- 41st IEEE Conference on Decision and Control. Proceedings of the 41st IEEE Conference on Decision and Control (Las Vegas, Nevada 10-13 Dec, 2002) p. 3889-3894
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- Institute of Electrical and Electronics Engineers (IEEE)
control system analysis;
sampled data systems;
- Resource Type
- conference paper
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