On the Effect of Multirate Co-simulation Techniques in the Efficiency and Accuracy of Multibody System Dynamics
Use este enlace para citar
http://hdl.handle.net/2183/34863Coleccións
- LIM - Artigos [43]
Metadatos
Mostrar o rexistro completo do ítemTítulo
On the Effect of Multirate Co-simulation Techniques in the Efficiency and Accuracy of Multibody System DynamicsAutor(es)
Data
2010Cita bibliográfica
González, F., Naya, M.Á., Luaces, A. et al. On the effect of multirate co-simulation techniques in the efficiency and accuracy of multibody system dynamics. Multibody Syst Dyn 25, 461–483 (2011). https://doi.org/10.1007/s11044-010-9234-7
Resumo
[Abstract] Dynamic simulation of complex mechatronic systems can be carried out in an efficient and
modular way making use of weakly coupled co-simulation setups. When using this approach,
multirate methods are often needed to improve the efficiency, since the physical components of
the system usually have different frequencies and time scales. However, most multirate methods
have been designed for strongly coupled setups, and their application in weakly coupled cosimulation
is not straightforward due to the limitations enforced by commercial simulation tools
used in mechatronics design. This work describes a weakly coupled multirate method intended to
be a generic multirate interface between block diagram software and multibody dynamics
simulators, arranged in a co-simulation setup. Its main advantage is that it does not enforce
equidistant or synchronized communication time-grids, and therefore it can be easily applied to
set up weakly-coupled co-simulations using off-the-shelf commercial block diagram simulators
while giving the user a great flexibility for selecting the integration scheme for each subsystem.
The method is first tested on a simple, purely mechanical system with known analytical
solution and variable frequency ratio (FR) of the coupled subsystems. Several synchronization
schemes (fastest-first and slowest-first) and interpolation/extrapolation methods (polynomials of
different orders and smoothing) have been implemented and tested. Next, the effect of the
interface on accuracy and efficiency is assessed making use of a real-life co-simulation setting
that links an MBS model of a kart to a thermal engine modelled in Simulink. Results show that
the proposed weakly coupled multirate method can achieve considerable reductions in the
execution times of the simulations without degrading the numerical solution of the problem
Palabras chave
Multibody
Co-simulation
Multirate
Weak coupling
Block diagram simulators
Co-simulation
Multirate
Weak coupling
Block diagram simulators
Descrición
This is a post-peer-review, pre-copyedit version of an article published in Multibody System Dynamics.
This version of the article has been accepted for publication, after peer review and is subject to Springer
Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements,
or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/
s11044-010-9234-7.
Versión do editor
Dereitos
Copyright © 2010, Springer Science Business Media B.V.
ISSN
1573-272X