Highly efficient harness design in vehicles through CATIA and CEM integration 2000-05-0155
The increasing number of electronic and electromechanical
systems in cars requires electromagnetic compatible harness
designs. The target is, to evaluate the consequences of different
cabling-layouts on electronic systems in a very early design phase.
To realize this practice oriented EMC simulations of wire harnesses
one has to follow different steps. These very steps are described
in the presentation.
We propose a preprocessing methodology for the CEM that can be
performed in an efficient manner by automatization through software
tools. In the first step, it is shown how the car body and harness
data is directly extracted from a CAD system. An automatized
partitioning of the harness and its environment is described. CAD
functions and special algorithms are used, that allow for judgement
of the harness structure as well as for frequency dependent user
control of the relevant spatial range between the harness and
surrounding car body parts.
It is shown how the first step delivers appropriate geometric
models of the harness. As a next step, the automatic processing of
the geometric models and their preparation for the two- and
three-dimensional numerical field calculation of electromagnetic
fields is shown. Finally, the extraction of system models for an
abstract level system simulation of the car network is shown.