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Experiments on fault-tolerant active vibration control / Tao Tao in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 130 n°6 (Novembre 2008) 

Public ISBD [article]  in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 130 n°6 (Novembre 2008) . - 8 p. Titre : Experiments on fault-tolerant active vibration control Type de document : texte imprimé Auteurs : Tao Tao, Auteur ; Kenneth D. Frampton, Auteur ; Chakradhar Byreddy, Auteur Année de publication : 2009 Article en page(s) : 8 p. Note générale : dynamic systems Langues : Anglais (eng) Mots-clés : fault-tolerant  active  vibration  control  system;  piezoceramic  sensors;  Beard–Jones  filter Résumé : The purpose of this work is to experimentally demonstrate a fault-tolerant active vibration control system. Active vibration control is achieved using piezoceramic sensors and actuators (transducers) that are attached to a simply supported beam. These transducers are used by a set of optimal H2 feedback compensators to minimize the lateral vibration of a beam. Actuator faults are detected and isolated with a Beard–Jones fault detection filter. This filter is a special case of Luenberger observer, which produces a residual output with specific directional properties in response to a system fault. In this current research work, a new Beard–Jones filter design methodology is introduced that permits its use on high-order systems and also on systems with feed-through dynamics. The output of this detection filter is monitored by a hybrid automaton that determines when faults occur. This hybrid automaton then directs the selection of a feedback compensator specifically designed for the detected system fault state. The result is a vibration control system that is capable of maintaining optimal performance in the presence of system faults. En ligne : http://dynamicsystems.asmedigitalcollection.asme.org/issue.aspx?journalid=117&is [...] [article] Experiments on fault-tolerant active vibration control [texte imprimé] / Tao Tao, Auteur ; Kenneth D. Frampton, Auteur ; Chakradhar Byreddy, Auteur . - 2009 . - 8 p. dynamic systems Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 130 n°6 (Novembre 2008) . - 8 p. Mots-clés : fault-tolerant  active  vibration  control  system;  piezoceramic  sensors;  Beard–Jones  filter Résumé : The purpose of this work is to experimentally demonstrate a fault-tolerant active vibration control system. Active vibration control is achieved using piezoceramic sensors and actuators (transducers) that are attached to a simply supported beam. These transducers are used by a set of optimal H2 feedback compensators to minimize the lateral vibration of a beam. Actuator faults are detected and isolated with a Beard–Jones fault detection filter. This filter is a special case of Luenberger observer, which produces a residual output with specific directional properties in response to a system fault. In this current research work, a new Beard–Jones filter design methodology is introduced that permits its use on high-order systems and also on systems with feed-through dynamics. The output of this detection filter is monitored by a hybrid automaton that determines when faults occur. This hybrid automaton then directs the selection of a feedback compensator specifically designed for the detected system fault state. The result is a vibration control system that is capable of maintaining optimal performance in the presence of system faults. En ligne : http://dynamicsystems.asmedigitalcollection.asme.org/issue.aspx?journalid=117&is [...]