Abstract

BEDOYA-ZAMBRANO, David Marcelo; LARA-VALENCIA, Luis Augusto  and  BLANDON-VALENCIA, John Jairo. Development of a hybrid control algorithm for magnetorheogical dampers to optimize the dynamic response in frames. Entramado [online]. 2024, vol.20, n.1, pp.1-.  Epub May 07, 2024. ISSN 1900-3803.  https://doi.org/10.18041/1900-3803/entramado.1.10270.

This research presents a methodology to optimize control forces in buildings, which are subjected to seismic loads. A control system called CLF-MR_1 was developed, which combines a genetic algorithm of non-dominated classification NSGA-II and a control system based on fuzzy logic. The controller was numerically evaluated in a real 96 m high building, in which 6 MR magnetorheological dampers were installed. The structure was subjected to 8 earthquake accelerations with different frequency ranges. The input parameters for the proposed control system were the displacements and velocities of the first floor of the building and the only output parameter was the voltage of the MR devices. The efficiency of CLF-MR_1 was compared with a second controller called CLF-MR_2, which operates using an inference system based on linguistic parameters. Results obtained show that CLF-MR_1 significantly improves the dynamic response of the building, compared to the results obtained with CLF-MR_2 and the uncontrolled condition of the building.

Keywords : Genetic algorithms; fuzzy logic; magnetorheological dampers; structural control.

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