Seismic responses of civil structures under magnetorheological-device direct control
- Publication Type:
- Conference Proceeding
- ISARC 2008 - Proceedings from the 25th International Symposium on Automation and Robotics in Construction, 2008, pp. 106 - 112
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This paper presents an efficient control strategy for magnetorheological (MR) dampers embedded in building structures to mitigate quake-induced vibrations. In this work, MR dampers are used as semi-active devices, taking the advantages of the fail-safe operation and low power requirement. By using a static hysteresis model for the MR damper, a suitable controller is proposed here for direct control of the supply currents of the MR dampers using feedback linearization. The dampers are configured in a differential mode to counteract the force-offset problem from the use of a single damper. The effectiveness of the proposed technique is verified in simulation by using a ten-storey building model subject to quake-like excitations.
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