Affiliations: Dynamic and Smart Systems Laboratory, The University
of Toledo, Toledo, OH, USA | MIE Department, University of Minnesota Duluth,
Duluth, MN, USA
Note: [] Corresponding author: Shuo Wang, Dynamic and Smart Systems
Laboratory, The University of Toledo, Toledo, OH, USA. E-mail:
[email protected]
Abstract: In hydraulic hybrid vehicles (HHV), vibration in dual-mode
pump/motor units should be isolated from the chassis. A mixed mode
magnetorheological (MR) fluid mount was adopted to isolate this vibration and
was evaluated in a quarter car model. The MR fluid mount was designed to be
able to operate in flow mode and squeeze mode independently and simultaneously.
For HHVs, it is desirable to control force and displacement transmissibility.
These simulation results presented a basis for designing an effective algorithm
to control both the displacement transmissibility and force transmissibility.
Moreover, a hierarchical controller for minimizing the two requirements for
transmissibility was also constructed. At last, a fuzzy logic controller was
devised to closely reproduce the effect of the hierarchical controller. The
experiments were set up to facilitate the hardware-in-the-loop evaluation of
the mount. Results from the experiments showed that the mixed mode MR fluid
mount was able to achieve desired dynamic stiffness profile to minimize the
dual-transmissibility criterion.
