On the stability of decentralized AVC/ASAC for large-scale structures

Abstract

Promising results have been achieved in controlling vibration and noise emission/transmission of single panel structures using active vibration control (AVC) and active structural acoustic control (ASAC). In most cases the contributed work has focused on a single panel or a section of the fuselage/lining. However, an AVC/ASAC system can only be effective when it is expanded to the entire fuselage structure. This expansion inevitably leads to a large number of sensors and actuators. For model-based control approaches especially, the system identification and the proof-of-stability would be challenging and probably not realizable. In this article 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.

Keywords

Control large-scale structures smart structures stability

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References

Algermissen

Rose

Keimer

et al . (2007) Automated synthesis of robust controllers for smart-structure applications in parallel robots. In: Proceedings of the AIAA/ASME/AHS adaptive structures conference, Honolulu, HI, 23–26 April, pp. 1–11. Reston: American Institute of Aeronautics and Astronautics.

Algermissen

Unruh

Haase

et al . (2014) Reduction of rotor noise transmission at the Dornier 728 experimental aircraft. In: Proceedings of the 21st international congress on sound and vibration (ICSV), Beijing, China, 13–17 July, pp. 1–8. Auburn: The International Institute of Acoustics and Vibration (IIAV).

Boulandet

Michau

Micheau

et al . (2014) Active reduction of sound transmission in aircraft cabins: A smarter use of vibration exciters. In: Proceedings of the INTER-NOISE and NOISE-CON congress and conference, volume 249, 16–19 November, pp. 3751–3759. Melbourne, Australia: Institute of Noise Control Engineering.

Elliott

Serrand

Gardonio

(2000) Feedback stability limits for active isolation systems with reactive and inertial actuators. Journal of Vibration and Acoustics 123(2): 250–261.

Gardonio

Miani

Blanchini

et al . (2012) Plate with decentralised velocity feedback loops: Power absorption and kinetic energy considerations. Journal of Sound and Vibration 331(8): 1722–1741.

Haase

Algermissen

Unruh

et al . (2014) Experiments on active control of counter rotating open rotor interior noise. Acta Acustica united with Acustica 100(3): 448–457.

Limebeer

(1982) The application of generalized diagonal dominance to linear system stability theory. International Journal of Control 36(2): 185–212.

Lunze

(2005) Regelungstechnik 2 : Mehrgrößensysteme, Digitale Regelung. 3rd ed. Berlin: Springer.

Michau

Micheau

Boulandet

et al . (2014) Decentralized complex envelope controller for ASAC by virtual mechanical impedances. In: Proceedings of the 2014 IEEE/ASME international conference on advanced intelligent mechatronics (AIM), 8–11 July, pp. 162–167. Besancon, France: IEEE.

10.

Rohlfing

Elliott

Gardonio

(2012) Feedback compensator for control units with proof-mass electrodynamic actuators. Journal of Sound and Vibration 331(15): 3437–3450.

11.

Zilletti

Elliott

Gardonio

et al . (2012) Experimental implementation of a self-tuning control system for decentralised velocity feedback. Journal of Sound and Vibration 331(1): 1–14.