Abstract
Maghetorheological fluid (MR fluid) is known as one of highly functional materials, and apparent viscosity of MR fluid can be varied in accordance with the applied magnetic field strength. Adapted for a damper, a variable mechanism can be given to the damper. In this paper, MR damper was constructed and its characteristics were examined. Furthermore, a neural network was applied to vibration control system of model structure with MR damper and vibration control experiment was conducted.