MR-brakes are electronically controllable brakes. They can apply variable resistance forces. MR-brakes use magnetorheological (MR) fluid, which changes its viscosity with magnetic flux. In its natural state, MR-fluid resembles motor oil and is slippery. When the fluid is exposed to magnetic field, its viscosity changes resulting in a sticky peanut butter consistency. When the magnetic field is remove, the fluid goes back to its natural slippery state.
We developed various MR-brakes with high force/torque output. Our research work led to two U.S. Patents. Please click the links on the left to explore some of our research.