05/04/2018 Seminar of Romain Postoyan

Date de publication : Mar 27, 2018 9:42:43 AM

Date: 05/04/2018, 14h00

Location: LAGEP, Bordet

Speaker: Sylvain Bertrand, Research engineer ONERA

Title: Periodic event-triggered control of nonlinear systems

Abstract: I will first introduce and motivate the concept of periodic event-triggered control as a relevant sampling paradigm for systems subject to communication or computation constraints. I will then present our recent work with Wei Wang and Dragan Nesic (Univ. of Melbourne, Australia) as well as Maurice Heemels (TU Eindhoven, Netherlands) on the periodic event-triggered control of nonlinear systems. The approach we propose relies on emulation, in the sense that the controller is first designed to stabilize the plant in the absence of sampling constraints. Afterwards, the latter are taken into account and we design the triggering rule and its sampling period to preserve stability. I will explain the main idea of our approach for the case where a single communication channel is used to connect the plant and a state-feedback controller. These results are developed within the hybrid formalism of R. Goebel, R. Sanfelice and A. Teel and the proofs are Lyapunov-based. A strength of the approach is its flexibility. Indeed, the results can be extended with the same rationale but at the price of more technicalities to the scenario where multiple networks, with their own triggering rules, are used to connect a disturbed plant with an output-feedback controller .