In this paper, we proposed and investigated a self-powered, self-sensing magnetorheological (MR) damper, which
integrates energy harvesting, sensing and MR damping capabilities into one device. This multifunctional integration
would bring great benefits such as energy saving, high reliability, size and weight reduction, lower cost, and less
maintenance for the use of MR damper systems. A prototype of the self-powered, self-sensing MR damper was designed,
fabricated and tested. The power generator hardware could serve as the power generation and velocity sensing
simultaneously. Analyses on the generated electrical voltages and power were performed and validated experimentally.
A combined magnetic-field isolation method was developed and analyzed. A novel velocity-sensing method was
proposed and experimentally validated to extract the velocity information from the signals of the power generator. This
method requires real-time signal processing while extra mechanical mechanism is not needed. The damping force
characteristic of the separate MR damper was also investigated.