000013125 001__ 13125
000013125 005__ 20161114160328.0
000013125 04107 $$aeng
000013125 046__ $$k2009-06-22
000013125 100__ $$aMoutsopoulou A., J.
000013125 24500 $$aHoo control for active vibration suppression in smart structures using nonsmooth and nonconvex optimization

000013125 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013125 260__ $$bNational Technical University of Athens, 2009
000013125 506__ $$arestricted
000013125 520__ $$2eng$$aIn this paper, a robust control system is developed for a flexible beam with piezoelectric components. A finite element formulation for modeling the dynamics of the laminated smart beam with bonded piezoelectric sensors/actuators is used. Cubic and quadratic Hermitian polynomials are employed for the transverse and rotational displacement respectively. The polynomials are used as basis functions for the construction of the finite element model, which is based on Timoshenko beam theory. The control problem is to keep the beam in equilibrium in the event of external wind disturbances and in the presence of model inaccuracies, using the available measurements and control limits. Also of interest is the maximum disturbance the system can handle, given its piezoelectric voltage limits. In order to take explicitly into account the uncertainty in the system, the theory of robust H∞ feedback control is used. Solutions to robust stability and robust performance are shown to be very satisfactory through extensive simulations.

000013125 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013125 653__ $$aSmart Beams, Uncertainty, Wind load, Nonsmooth Optimization, Reduced Order Control, Robust Performance. Abstract. In this paper, a robust control system is developed for a flexible beam with piezoelectric components. A finite element formulation for modeling the dynamics of the laminated smart beam with bonded piezoelectric sensors/actuators is used. Cubic and quadratic Hermitian polynomials are employed for the transverse and rotational displacement respectively. The polynomials are used as basis functions for the construction of the finite element model, which is based on Timoshenko beam theory. The control problem is to keep the beam in equilibrium in the event of external wind disturbances and in the presence of model inaccuracies, using the available measurements and control limits. Also of interest is the maximum disturbance the system can handle, given its piezoelectric voltage limits. In order to take explicitly into account the uncertainty in the system, the theory of robust H∞ feedback control is used. Solutions to robust stability and robust performance are shown to be very satisfactory through extensive simulations.

000013125 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013125 720__ $$aMoutsopoulou A., J.$$iStavroulakis G., E.$$iPouliezos A., D.
000013125 8560_ $$ffischerc@itam.cas.cz
000013125 8564_ $$s243873$$uhttps://invenio.itam.cas.cz/record/13125/files/CD170.pdf$$yOriginal version of the author's contribution as presented on CD, section: Advances in structural vibrations - ii (MS).
000013125 962__ $$r13074
000013125 980__ $$aPAPER