Self-powered / self-sensing magnetic fluid damper

摘要

Disclosed is a self-powered and self-sensing MR damping device, comprising: an MR damper part having a damper piston assembly and a damper cylinder, the damper piston assembly being movable relative to the damper cylinder under an external excitation; a power generator configured to generate electrical power according to the relative movement between the damper piston and the cylinder assembly; and an electrical circuit configured to estimate said relative movement to output a damper driving current based on the estimated velocity, wherein the MR damper part is further configured to generate a damper force according to the damper driving current. An electrical circuit for the device is also provided.