TY - GEN
T1 - Active vibration damping of solar arrays
AU - Reinicke, Gunar
AU - Baier, Horst
AU - Grillenbeck, Anton
AU - Scharfeld, Frank
AU - Hunger, Joseph
AU - Abou-El-Ela, A.
AU - Löhberg, Andreas
PY - 2012
Y1 - 2012
N2 - Current generations of large solar array panels are lightweight and flexible constructions to reduce net masses. They undergo strong vibrations during launch. The active vibration damping is one convenient option to reduce vibration responses and limit stresses in facesheets. In this study, two actuator concepts are used for vibration damping. A stack interface actuator replaces a panel hold down and is decoupled from bending moments and shear forces. Piezoelectric patch actuators are used as an alternative, where the number, position and size of actuators are mainly driven by controllability analyses. Linear Quadratic Gaussian control is used to attenuate vibrations of selected mode shapes with both actuators. Simulations as well as modal and acoustic tests show the feasibility of selected actuator concepts.
AB - Current generations of large solar array panels are lightweight and flexible constructions to reduce net masses. They undergo strong vibrations during launch. The active vibration damping is one convenient option to reduce vibration responses and limit stresses in facesheets. In this study, two actuator concepts are used for vibration damping. A stack interface actuator replaces a panel hold down and is decoupled from bending moments and shear forces. Piezoelectric patch actuators are used as an alternative, where the number, position and size of actuators are mainly driven by controllability analyses. Linear Quadratic Gaussian control is used to attenuate vibrations of selected mode shapes with both actuators. Simulations as well as modal and acoustic tests show the feasibility of selected actuator concepts.
UR - http://www.scopus.com/inward/record.url?scp=84871100069&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84871100069
SN - 9789290922551
T3 - European Space Agency, (Special Publication) ESA SP
BT - Proceedings of 12th European Conference on Spacecraft Structures, Materials and Environmental Testing
T2 - 12th European Conference on Spacecraft Structures, Materials and Environmental Testing
Y2 - 20 March 2012 through 23 March 2012
ER -