Fuzzy control of structural vibration based on rough set theory

Fuzzy theory is highly promising for active structural control. But the control rules are generally experimental in fuzzy control of structural vibration. Recently developed rough set theory has a powerful capability for analyzing data and finding potential knowledge. This paper combines those advantages of the two theories, using rough set theory to extract a set of rules for a fuzzy controller. A simulation and shaking table tests are conducted on a five-storey model using an active mass damper, and the results show that the proposed approach is effective in suppressing the building response to earthquakes. The results of the experiments also confirm the potential of using the fuzzy controller for the practical implementation because of its intrinsic robustness and fewer number of measured structural responses.