Implementation of Modal Control for Series Isolated Structure Using Magneto-rheological Dampers


Du Yongfeng*, Zhang Shangrong, Guoping Jiang

Institute of Earthquake Protection and Disaster Mitigation,
Lanzhou University of Technology, Lanzhou, China



using magneto rheological dampers (MRD). With the problem formulated in a state-space form and decoupled vibration mode through complex modal decomposition method, then controlled first two modal of structure by LQR algorithm. Numerical example shows this method is simple, and effectively reduces the structure response under the earthquake.

Keywords: series isolation system; soil and rock; modal control; MRD

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