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On the Stability of Decentralized AVC/ASAC for Large-Scale Structures

Algermissen, Stephan and Monner, Hans Peter (2015) On the Stability of Decentralized AVC/ASAC for Large-Scale Structures. ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems - SMASIS, 21.-23. Sept. 2015, Colorado Springs, CO, USA.

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Active Vibration Control (AVC) and Active Structural Acoustic Control (ASAC) gained much attention in all kind of industries in the past. Promising results have been achieved in controlling the vibration and the noise emission/transmission of single panel structures. Especially for aircraft applications, concepts for the reduction of the turbulent boundary layer, rotor or jet noise are presented in the literature. In most cases the contributed work is focused on a single panel or a section of the fuselage/lining. However, an AVC/ASAC system can only be effective for the passengers when it is expanded to the entire fuselage structure. This expansion inevitably leads to a large number of sensors and actuators and thus to a controlled plant of high dimensions. For model-based control approaches especially, the system identification and the proof of stability would be challenging and probably not realizable. In this paper a strategy for such large-scale problems is investigated. A decentralized control approach with collocated actuator-sensor pairs is proposed. Since adjacent control loops are highly coupled by the underlying structure, special attention has to be given to the global stability of the entire control system. Instead of proving local stability and setting a global master gain, a method for the tuning of the single collocated control loops is developed that takes the cross-couplings into account. Based on data of DLR's experimental aircraft Dornier 728, it can be shown that the new method increases the performance of the control system compared to the master-gain method.

Item URL in elib:https://elib.dlr.de/98473/
Document Type:Conference or Workshop Item (Speech)
Title:On the Stability of Decentralized AVC/ASAC for Large-Scale Structures
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:September 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:active vibration control, active structural acoustic control, stability, large-scale systems
Event Title:ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems - SMASIS
Event Location:Colorado Springs, CO, USA
Event Type:international Conference
Event Dates:21.-23. Sept. 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Algermissen, Dr.-Ing. Stephan
Deposited On:17 Nov 2015 12:29
Last Modified:10 May 2016 23:32

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