Adaptive Damping

Adaptive MRF Damper.
© Fraunhofer ISC
Adaptive MRF Damper.

Adaptive Dampers have the task of adjusting a damping force to the respective situation as required. With an automotive shock absorber, it can be useful to keep the damping relatively soft to increase ride comfort, or to adjust the damping hard to improve cornering performance.

In dampers with Magnetorheological Fluids, the damping force can be controlled over a wide range by the magnetic field strength, since the MRF stiffens in the magnetic field. MRF technology permits different designs of dampers, which can also differ from the well-known elongated dampers. Adaptive dampers with rotary motion can also be implemented in this way. Even devices with a damping in several dimensions are possible with MRF. Usually, the magnetic field is generated by an electromagnet whose coil is integrated in the damper piston with an annular gap through which the MRF is pushed during the piston movement. The magnetic field significantly increases the flow resistance and thus the damping force.


  • Composition-property correlations of MRF
  • Conception and design of MRF dampers
  • Simulation of magnetic circuits, also with permanent magnets
  • Characterization of MRF dampers


  • Development of customized MRF dampers
  • Development of special MRF for Adaptive Dampers
  • Construction of demonstrators for MRF dampers
  • Magnetic circuit design for MRF dampers, also with permanent magnets
  • Construction of MRF dampers
  • Development of application-oriented testing technology for MRF dampers