Journal of Pure and Applied Mathematics: Advances and ApplicationsAuthor's: DIMUTHU DHARSHANA ARACHCHIGE, SUBODHA THARANGI IRESHIKA, ORESTE NYNIYONSABA and HAMID REZA KARIMI
Pages: [191] - [226]
Received Date: August 9, 2013
Submitted by:
Magneto-rheological (MR) dampers are being developed for a wide
variety of applications where controllable damping is desired. These
applications include dampers for construction industry, automobiles,
heavy trucks, bicycles, prosthetic limbs, gun recoil systems, and
possibly others. Semi active suspension (SAS) with MR dampers are used
to isolate the system from the undesirable vibration sources. The MR
dampers provide a controlled torque through control of an applied
magnetic field. The magnetic field is controlled by an input current
and it has been found that the torque current behaviour of the MR
damper is highly nonlinear.
The research aims to analyze the nonlinear behaviour of an MR damper
occupied in the SAS laboratory platform. Firstly, the SAS system is
mathematically modelled to obtain governing equations of the damping
torque and subsequently, stability of the system is investigated. One
of the premier model proposed to analyze the MR damper; Bouc-Wen
model, is discussed by analyzing the effect of parameters on the
hysteresis behaviour. Thereafter, Bouc-Wen model is integrated to the
SAS platform and the effect of the parameters to the vibration
response is analyzed. Subsequently, experimental results are compared
with the results of the proposed theoretical model. Consequently, it
is concluded that MR rotary damper effectively enables to eliminate or
reduce the undesirable vibrations by controlling the SAS damping
torque in a continuous way.
vibration, magneto-rheological (MR), Bouc-Wen, hysteresis.
