Print Email Facebook Twitter Periodic event-triggered control for congested networked control systems Title Periodic event-triggered control for congested networked control systems Author Szymanek, Aleksandra (TU Delft Mechanical, Maritime and Materials Engineering; TU Delft Delft Center for Systems and Control) Contributor Mazo Espinosa, Manuel (mentor) de Albuquerque Gleizer, Gabriel (mentor) Degree granting institution Delft University of Technology Programme Mechanical Engineering | Systems and Control Date 2019-08-27 Abstract With the recent development of control systems, event-triggered control (ETC) has been introduced to prevent unnecessary usage of resources, which often happens under time-based control implementations. This thesis presents a novel approach to periodic event-triggered control (PETC) that aims at reducing the number of transmissions between the controller and the sensors even further. This goal is particularly important in networked control systems (NCSs), where communication and computation resources are scarce. In this report, a relaxed triggering condition is introduced that relies on bounding the Lyapunov function of the continuous-time closed-loop system with an exponentially decaying function, rather than requiring its monotone decrease. The relaxed PETC achieves significantly less transmissions compared to existing PETC implementations. The thesis pushes the limit of event-triggeredcontrol even further, by introducing an algorithm for a scheduler of NCS that allows to skip some of the events. This can be seen as a ‘last resort’ approach, that postpones the transmission as much as possible. It is inspired by methods used in self-triggered control (STC) and scheduling event-based NCS. Reducing the communication between the plant and the controller introduces some trade-offs that are also discussed in this report. Finally, several modifications of presented ideas are given that can be applied depending on the main objectiveson the performance of the control loop. Subject periodic event-triggered controlnetworked control systemstriggering mechanism To reference this document use: http://resolver.tudelft.nl/uuid:7e7b0712-9bed-4438-a37d-2b5b2ed24211 Part of collection Student theses Document type master thesis Rights © 2019 Aleksandra Szymanek Files PDF ASzymanek_mscThesis.pdf 1.52 MB Close viewer /islandora/object/uuid:7e7b0712-9bed-4438-a37d-2b5b2ed24211/datastream/OBJ/view