Počet záznamů: 1
On the distinguishability and observer design for single-input single-output continuous-time switched affine systems under bounded disturbances with application to chaos-based modulation
- 1.
SYSNO ASEP 0471410 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název On the distinguishability and observer design for single-input single-output continuous-time switched affine systems under bounded disturbances with application to chaos-based modulation Tvůrce(i) Gómez-Gutiérrez, D. (MX)
Renato Vázquez, C. (MX)
Čelikovský, Sergej (UTIA-B) RID, ORCID
Ramírez-Trevino, A. (MX)
Castillo-Toledo, B. (MX)Celkový počet autorů 5 Zdroj.dok. European Journal of Control - ISSN 0947-3580
Roč. 34, č. 1 (2017), s. 49-58Poč.str. 10 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Unknown input observers ; Chaos-based modulation ; Chaotic synchronization ; Message-embedding Vědní obor RIV BC - Teorie a systémy řízení Obor OECD Automation and control systems CEP GA13-20433S GA ČR - Grantová agentura ČR Institucionální podpora UTIA-B - RVO:67985556 UT WOS 000397836300006 EID SCOPUS 85008498736 DOI 10.1016/j.ejcon.2016.12.005 Anotace Switched Affine Systems (SAS's) is a class of Hybrid Systems composed of a collection of Affine Systems (AS's) and a switching signal that determines, at each time instant, the evolving affine subsystem. This paper is concerned with the observability and observer design for single-input single-output (SISO) SAS's under unknown perturbation, for the case that no information about the switching signal is available. It is firstly demonstrated that in the presence of disturbances every pair of AS's is always indistinguishable from the continuous output, meaning that it is not possible to infer the evolving AS by using only the information provided by the output of the SAS. Nevertheless, by taking advantage of the knowledge on the disturbance bound, new distinguishability conditions are derived, making possible to distinguish the evolving AS. By using these new distinguishability conditions, an observer scheme for SISO SAS's, subject to unknown switching signal and unknown perturbations, is presented. Such an observer scheme determines in finite-time the evolving AS. Furthermore, it estimates both the state of the system and the disturbance. Finally, the proposed observer scheme is effectively applied for a non-autonomous chaotic modulation application, which is an attractive method for spread-spectrum secure communication in which the message is fed as a disturbance to a chaotic SAS and the output is then transmitted through an open channel to a receiver, which is an observer algorithm that recovers the message (the disturbance) from the output signal. Pracoviště Ústav teorie informace a automatizace Kontakt Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Rok sběru 2018
Počet záznamů: 1