A Theoretical Model for Calculating Vibration Characteristics of A Kind of Driver Seat with Air Spring and MR Damper

Abstract:

In order to further reduce the vibration transmitted from vehicle to driver, a new model of driver scissors linkage seat suspension was put forward, in which an air spring with auxiliary chamber and a MR damper are between the face and floor of the seat. The motion differential equation of this seat suspension system was established and the theoretical computing formulation of it’s equivalent vertical stiffness, equivalent damping coefficient, natural frequency and damping rate were deduced. Besides, taking HY-Z04 scissors linkage seat, SK37-6 air spring of ContiTech and RD-1005-3 MR damper of LORD as an example, the equivalent stiffness and damping coefficient in different conditions of the air spring pressure, the sprung mass, the orifice diameter and MR damping were computed and analyzed. The study results show that the air spring pressure, the sprung mass, the orifice diameter and MR damping all have obvious influence on the equivalent stiffness and damping coefficient, so the seat comfort can be improved by changing the air spring pressure, the orifice diameter and MR damping according to driver’s weight and road condition.

• Periodical: Applied Mechanics and Materials (Volume 141)
• Pages: 8-14
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.141.8
• Online since: November 2011
• Authors: Xing Xing Zhu, Si Hong Zhu
• Keywords: Air Spring, Auxiliary Chamber, Equivalent Damping, Equivalent Stiffness, MR Damper

References

[1] H.J. Matthies, F. Meier, Jahrbuch Agrartechnik, Landwirtschaftsverlag (1999) 21-24.

[2] S.B. Choi, Y. M Han, Vibration control of electrorheological seat suspension with human-body model using sliding mode control, Journal of Sound and Vibration 303 (2007) 391-404.

DOI: 10.1016/j.jsv.2007.01.027

[3] J. Wu, H.F. Wang: Mechanical & Electrical Engineering Magazine in China Vol. 25 (2008), pp.74-76.

[4] L.D. Daniel, E.S. Troy, John Deere active seat: a new level of seat performance, Agricultural Engeering (2002) 02-IE-002.

[5] X.M. Xu, S.H. Zhu: China Mechanical Engineering Vol. 17 (2006), pp.802-804.

[6] M.N. Wang: Research on vibration characteristic of scissors linkage seat with suspension of the air spring with auxiliary chamber, Nanjing Agricultural University in China (2008).

[7] J.S. Wang, S.H. Zhu, L. He: China Mechanical Engineering Vol. 12 (2009), pp.1418-1421.

[8] X.M. Xu, Researches on driver seat suspension system of off-road vehicles based on magnetic spring, Nanjing Agricultural University in China (2006).

[9] J.S. Wang, Researches on dynamic characteristics of air spring with auxiliary chamber, Nanjing Agricultural University in China (2009).