Structural health monitoring of single degree of freedom flexible structure having active mass damper under seismic load

摘要

In this research, the application of active mass damper (AMD) has been experimentally tested using electromagnetic uniaxialrnshake table. The characteristic of an active damper has been presented. A state-feedback controller has been introduced forrnsingle flood active mass damper (AMD) using numerical modeling. The model was built and experiment was performed inrnlaboratory having AMD to discuss the effect of model parameters and the development of parameters by inputting the datarnobtained from most severe earthquake on Oct 8 2005 in Pakistan. The system model, control design and observer were testedrnon shake table having 46 cm × 46 cm dimensions in real time vibrations. The shake table used has capability of running withrnpowerful actuator having scaled accelerograms of real time earthquakes. The setup to operate the controller on real experimentalrnwork was discussed. It was observed that about 40% reduction in vibration can be achieved using active mass damper.