Interpretation of simultaneously optimized fuzzy controller and active tuned mass damper parameters under Pulse-type ground motions

• Published in: Engineering structures 2022-06, Vol.261, p.114286, Article 114286
• Main Authors: Hosseini Lavassani, Seyed Hossein, Ebadijalal, Mehrdad, Shahrouzi, Mohsen, Gharehbaghi, Vahidreza, Noroozinejad Farsangi, Ehsan, Yang, T.Y.
• Format: Article
• Language: English
• Subjects: Active damping; Active Tuned Mass Damper; Algorithms; Center of Mass Optimization; Controllers; Earthquake dampers; Earthquakes; Finite element method; Fuzzy control; Fuzzy logic; Fuzzy Logic Controller; Ground motion; Mathematical models; Optimization; Parameters; Pulse-type Earthquake Records; Seismic activity; Soil characteristics; Soil-Structure Interaction; Three dimensional models; Vibration isolators
• ISSN: 0141-0296; 1873-7323
• DOI: 10.1016/j.engstruct.2022.114286

•Optimization and Interpretation of Fuzzy Controller Parameters.•The controller is installed on the roof of a 15-story building, and its characteristics are determined by a 3-dimensional (3d) finite element model of a real structure.•Investigating the performance of the suggested method by the aim of energy consumption.•FLC parameters, including fuzzy rules, shape of membership functions (MFs) and MF limitations, as well as ATMD parameters such as mass, damping, stiffness and maximum control force, were optimized subjected to both peak displacement of the last story and highest inter-story drift objective functions (OFs).•A general-purpose center of mass optimization (CMO) algorithm is established to tackle the optimization problem. All fuzzy logic controller specifications and active tuned mass damper (ATMD) parameters are simultaneously optimized under seven pulse-type near-fault earthquake records. The last story's peak displacement and the maximum inter-story drift are separate objective functions. The controller is installed on the roof of a 15-story building, and its characteristics are determined by a 3-dimensional finite element model of a real structure. Adopting a simple model, soil-structure interaction effects are investigated. Geotechnical tests of the site soil are used to determine soil characteristics. A general-purpose center of mass optimization algorithm is established to tackle the optimization problem. The algorithm results are compared with those of two popular optimization algorithms. An ensemble of twenty-four pulse-type ground motions is utilized to evaluate and validate the proposed controller. Optimal results are compared and discussed for the two objective functions, where interpreting numerical results may contain practical information about excitations and the structure.