An adaptive fuzzy-logic -controller (FLC) is proposed to actuate MR damper smartly. Minimizing the excessive responses of building should be considered as a multi-objective optimization problem. The new generation structural systems should be designed based on seismic performance level. Designing based on performance requires dynamic, heavy and repetitive time history analyses. The endurance time analysis method (ETA) is a modern dynamic method based on the performance of the structure, which leads to the reduction of time and number of structural analyses. To investigate the efficiency of Dolphin Echolocation-Fuzzy Logic Controller (DE-FLC) and ETA, several ET simulations were performed. The seismic responses of 11th-story benchmark building equipped with MR dampers were investigated in two cases of seven time-history analysis and six generation of ET functions. By using Dolphin echolocation, the optimal arrangement and the number of sensors and dampers is determined. The proposed DE-FLC controller demonstrates its efficiency by reducing the excessive displacement under seismic excitations in comparison with uncontrolled case and classical FLC. Furthermore, the results demonstrate that sixth generation of ETA can simulate responses of several time-history analyzes well with proper accuracy, without necessitating any several computational burden.