A frequency domain approach for parameter identification in multibody dynamics

Stefan Oberpeilsteiner; Thomas Lauss; Wolfgang Steiner; Karin Nachbagauer

doi:10.1007/s11044-017-9596-1

A frequency domain approach for parameter identification in multibody dynamics

Multibody Syst Dyn. 2018;43(2):175-191. doi: 10.1007/s11044-017-9596-1. Epub 2017 Nov 3.

Authors

Stefan Oberpeilsteiner^{1

2}, Thomas Lauss^{1

2}, Wolfgang Steiner^{1

2}, Karin Nachbagauer¹

Affiliations

¹ 1Faculty of Engineering and Environmental Sciences, University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria.
² 2Institute of Mechanics and Mechatronics, Vienna University of Technology, Getreidemarkt 9/325, 1060 Wien, Austria.

Abstract

The adjoint method shows an efficient way to incorporate inverse dynamics to engineering multibody applications, as, e.g., parameter identification. In case of the identification of parameters in oscillating multibody systems, a combination of Fourier analysis and the adjoint method is an obvious and promising approach. The present paper shows the adjoint method including adjoint Fourier coefficients for the parameter identification of the amplitude response of oscillations. Two examples show the potential and efficiency of the proposed method in multibody dynamics.

Keywords: Adjoint system; Engine orders; Fourieranalysis; Frequency domain; Multibody dynamics; Optimization; Order analysis; Parameter identification; Window functions.