Title
Fast Determination of Vehicle Suspension Parameters via Continuous Time System Identification
Date Issued
01 January 2016
Access level
open access
Resource Type
conference paper
Author(s)
Thaller S.
Reiterer F.
Schmied R.
Waschl H.
Kokal H.
Johannes Kepler University Linz
Abstract
Having accurate estimates for the parameter values of different vehicle components is crucial when it comes to the level of virtual testing of vehicle dynamics. Since these values are often not directly available, they need to be obtained from measurements. The most straightforward, but also most expensive way to obtain unknown values is by disassembling the car and by performing tests on the separate vehicle components. A solution that is often much cheaper is to infer estimates of the parameter values from measurements obtained by performing different driving maneuvers with the car. In this paper we show how methods from direct continuous time system identification (CT SysId) can be used to obtain accurate estimates for parameter values of the vehicle suspension system. The dynamic tests consist in exciting the suspension system by driving over one or several small obstacles and by recording the dynamic response of the car. CT Sysld is used to adapt the unknown parameter values of a tentative car model in order to best match the measured data. Evaluation of the approach using a multi-body simulation tool showed that the identified parameter values match well with the ones of the simulated vehicle suspension system.
Start page
448
End page
453
Volume
49
Issue
11
OCDE Knowledge area
Ingeniería mecánica Sistemas de automatización, Sistemas de control
Scopus EID
2-s2.0-84991108826
Conference
IFAC-PapersOnLine
Sponsor(s)
★★LTfihMis) winortkhehafrsabmeeewnosrukpopforttheedAbuystthrieanLifnizOfMieEntTe-rKo2f Mpreocghraatmro.nics This work has been supported by the Linz fienter of Mechatronics
Sources of information: Directorio de Producción Científica Scopus