Modeling and testing for electromagnetic mass damper and structure coupled system

To investigate the effect of control-structure-interaction (CSI) between the innovative electromagnetic mass damper (subsequently called the EMD) and the structure, three computation models were developed and experimentally validated in this paper, which correspond to considering different levels of precisions for the whole system. First, the on-line test results under sine sweep control voltages input were compared with predictions based on those theoretical models. Then, shaking table tests of these models under three control algorithms were conducted to study the impact of modeling considerations on control performance. At last, all the test results show that only if the CSI effect, especially the higher-order CSI effect, is fully considered, the working characteristics of the EMD system can be accurately described, and its performance for reducing structural vibrations can be mostly exerted, which is necessary for the EMD system to realize higher performance both in experiments and practices.