Abstract
In event-triggered control systems, events are typically generated when a static function of the output (or state) of the system exceeds a given threshold. Recently, event-generators have been proposed that generate events based on an additional dynamic variable, with dynamics that depend on the output of the system. It is shown that these dynamic eventgenerators are able to guarantee the same performance as their static counterparts, while typically generating significantly fewer events. However, all dynamic event-generators available in literature require continuous measuring of the output of the plant, which is difficult to realize on digital platforms. In this paper, we propose new dynamic eventgenerators for linear systems, which require only periodic sampling of the output, and are therefore easy to implement on digital platforms. Based on hybrid modelling techniques combined with constructive designs of Lyapunov/storage functions for the resulting hybrid models, it is shown that these (dynamic periodic) event-generators lead to closed-loop systems which are globally exponentially stable (GES) with a guaranteed decay rate and L2-stable with a guaranteed L2-gain. The benefits of these new event-generators are also demonstrated via a numerical example.
Original language | English |
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Title of host publication | HSCC 2017 - Proceedings of the 20th International Conference on Hybrid Systems, 18-20 April 2017, Pittsburgh, Pennsylvania |
Subtitle of host publication | Computation and Control (part of CPS Week) |
Place of Publication | New York |
Publisher | Association for Computing Machinery, Inc |
Pages | 179-186 |
Number of pages | 8 |
ISBN (Print) | 978-1-4503-4590-3 |
DOIs | |
Publication status | Published - 13 Apr 2017 |
Event | 20th ACM International Conference on Hybrid Systems: Computation and Control (HSCC 2017) - Pittsburgh, United States Duration: 18 Apr 2017 → 20 Apr 2017 Conference number: 20 http://hscc2017.ece.illinois.edu/ |
Conference
Conference | 20th ACM International Conference on Hybrid Systems: Computation and Control (HSCC 2017) |
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Abbreviated title | HSCC 2017 |
Country/Territory | United States |
City | Pittsburgh |
Period | 18/04/17 → 20/04/17 |
Internet address |
Keywords
- Event-triggered control
- Global exponential stability
- Hybrid systems
- Impulsive systems
- L stability
- Riccati differential equations