To effectively suppress the horizontal vibration of a high-speed elevator car caused by uncertainties such as irregularity guide rails and piston wind in hoistway, this paper proposes new variable universe fuzzy control method for semi-active shoes with magnetorheological (MR) dampers based on firefly algorithm backpropagation (FA-BP) neural network (FNN). First, dynamic model system is constru...

A method for parameter identification of the magnetorheological damper (MRD) model with an improved firefly algorithm (IFA) is proposed, and a semi-active seat control system three-degree-of-freedom (3-DOF) established by combining quarter car to investigate ride comfort. The dynamic characteristics MRD were analyzed experimental method. Combined IFA, parameters phenomenon identified, forward M...

Investigations on the design of controllable magnetorheological (MR) fluid devices have focused heavily on low velocity and frequency applications. The extensive work in this area has led to a good understanding of MR fluid properties at low velocities and frequencies. However, the issues concerning MR fluid behavior in impact and shock applications are relatively unknown. To investigate MR flu...

To analyze the multidimensional elastic–plastic response of frame structure with magnetorheological (MR) dampers under strong seismic excitations, test MRD was performed, location matrix in derived, and calculation models without an were established based on three-segment variable stiffness beam. Taking a five-story reinforced concrete (RC) as example, developed by MATLAB software dynamic time ...