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Experimental sensitivity analysis for robustness studies of a controlled system

: Li, Ying; Pfeiffer, Thomas; Nuffer, Jürgen; Bös, Joachim; Hanselka, Holger


Smart materials and structures : SMS 21 (2012), No.6, Art. 064002, 5 pp.
ISSN: 0964-1726
ISSN: 1361-665X
Journal Article
Fraunhofer LBF ()
experimental sensitivity analysis; controlled system

Active and adaptive systems consist of various components with different functionalities. As the complexity of the systems increases, reliability and robustness studies become a more complicated task. Sensitivity analysis helps system designers to understand interactions between the system components and to identify the important parameters with significant overall influences on the system performance. To analyze the complex interactions of the components and parameters of an active system with respect to system performance, a framework structure with active vibration damping in a lab scale test rig was set up. With this test rig an experimental sensitivity analysis was performed to investigate the influences of the system components and parameters on the vibration reduction. A higher robustness of the active system was achieved by using adaptive control.