Implementation of an Electronic Circuit for SSSA Control Approach of a Plate Type Element and Experimental Match with a Feed-Forward Approach

Successfulimplementationofanactivevibrationcontrolsystemisstrictlycorrelatedtotheexactknowledgeofthedynamicbehaviorofthesystem,oftheexcitation levelandspectraandofthesensorandactuator’sspecification.Onlythecorrectmanagementoftheseaspectsmayguaranteethecorrectchoiceofthecontrolstrategyand therelativeperformance. Withinthispaper,some preliminaryactivitiesaimedat the creation of a structurally simple, cheap and easily replaceable active control systems formetalpanelsarediscussed.Thefinalfutureaimistocontrolandtoreducenoise, produced by vibrations of metal panels of the body of a car. The paper is focused on two points. The first one is the realization of an electronic circuit for Synchronized ShuntedSwitchArchitecture(SSSA)withtherightdimensioningofthecomponents to control the proposed test article, represented by a rectangular aluminum plate. The second one is a preliminary experimental study on the test article, in controlled laboratory conditions, to compare performances of two possible control approach: SSSAandafeed-forwardcontrolapproach.Thiscomparisonwouldcontributetothe future choice of the most suitable control architecture for the specific attenuation of structure-bornnoiserelatedtoanautomotivefloorstructureunderdeterministic(engineandroad-tyreinteraction)andstochastic(road-tyreinteractionandaerodynamic) forcingactions.