Improvement of Ride Comfort in a Passenger Car Using Magneto Rheological (MR) Damper.

Autor: Narwade, Prashant, Deshmukh, Ravindra, Nagarkar, Mahesh, Sukhwani, Vijaykumar
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Zdroj: Journal of Vibration Engineering & Technologies; Oct2022, Vol. 10 Issue 7, p2669-2676, 8p
Abstrakt: Background: The present study insights the development of magneto rheological (MR) damper and its comparison with existing viscous damper. The advantage of a magneto rheological damper over an existing viscous damper or passive damper is that they offer semi-active control of the system. The magneto rheological damper with a little power produces a very quick response to the applied current in Ampere. Purpose: As the existing viscous damper produces damping force proportional to the velocity of vibration, damping force is less at the low velocity of vibration. Semi-active suspensions provide the advantage of generating the required damping force at low velocities. To apply the theory of semi-active suspension, an MR damper was selected to generate the required damping force. Methods: Both dampers are tested on a quarter car test rig and vibration amplitudes are obtained at different frequencies. A magneto rheological damper performance is compared with the existing conventional viscous damper by obtaining acceleration and displacement plots. Results: It is observed that the passive damper generates a high acceleration of 5.492 m/s2 at 20 kg load and 1.33 Hz frequency. Whereas, with the help of MR damper, output acceleration of a passenger car can be reduced from 2.981 to 2.051 m/s2 at the same frequency. The output acceleration for a passenger car with MR damper is reduced by 46% as compared to a passive damper, thus resulting in better ride comfort. Conclusion: From the experimental data, it is observed that the damping force of MR damper increases with the increase in the current and magnetic field. By changing the magnetic field, acceleration is significantly reduced at any applied excitation frequency of the system. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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