Frequency analysis of a semi-active suspension with magneto-rheological dampers

Florin Andronic; Ioan Mihai; Cornel Suciu; Marius Beniuga

doi:10.1117/12.2070339

20 February 2015 Frequency analysis of a semi-active suspension with magneto-rheological dampers

Florin Andronic, Ioan Mihai, Cornel Suciu, Marius Beniuga

Proceedings Volume 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII; 925822 (2015) https://doi.org/10.1117/12.2070339
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies 2014, 2014, Constanta, Romania

Abstract

Suspension systems for motor vehicles are constantly evolving in order to ensure vehicle stability and traffic safety under all driving conditions. The present work aims to highlight the influence factors in the case of a quarter car model for semi-active suspensions. The functions that must be met by such suspension systems are first presented. Mathematical models for passive systems are first illustrated and then customized for the semi-active case. A simulation diagram was conceived for Matlab Simulink. The obtained simulation results allow conducting a frequency analysis of the passive and semi-active cases of the quarter car model. Various charts for Passive Suspension Transmissibility and for the Effect of Damping on Vertical Acceleration Response were obtained for both passive and semi-active situations. Analysis of obtained results allowed evaluating of the suspension systems behavior and their frequency dependence. Significant differences were found between the behaviors of passive and semi-active suspensions. It was found that semi-active suspensions ensure damping in accordance to the chosen control method, and are much more efficient than passive ones.

Citation Download Citation

Florin Andronic, Ioan Mihai, Cornel Suciu, and Marius Beniuga "Frequency analysis of a semi-active suspension with magneto-rheological dampers", Proc. SPIE 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII, 925822 (20 February 2015); https://doi.org/10.1117/12.2070339

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