Abstract
Vibrations existed at the vehicles due to railway irregularities can cause various unfavourable cases. In this study, the suppression of the vertical vibrations at the high-speed railway vehicles was aimed by the semi-active controller design with the help of magnetorheological dampers where are placed parallel with the second suspension system. The reason for the adaptive controller design selection is it has the ability to guarantee the stability of the model consist of the magnetorheological dampers and the train’s parametric uncertainties. With the working magnetorheological dampers parallel with the second suspension system, increment of the passenger comfort and less energy consumption are obtained at the same time. The proposed controller effectiveness was shown in the comparisons between active and passive ones in the time and frequency domain.