Harness Design Process - from Idea to Manufacture
Harness Design Process - from Idea to Manufacture
Harness Design Process - from Idea to Manufacture
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sources inside the car and can be limited mostly <strong>to</strong> 0<br />
<strong>to</strong> 150MHz.<br />
• EMI (Electromagnetic Interference) respects the<br />
radiated field <strong>from</strong> the harness <strong>to</strong> the antenna and<br />
overcomes a frequency range <strong>from</strong> 0.1MHz <strong>to</strong> 150<br />
MHz.<br />
• EMS (Electromagnetic Susceptibility) considers the<br />
coupling between an external plane wave and the<br />
harness or an internal antenna (e.g. mobile phone) and<br />
the harness. Here the frequency range <strong>from</strong> 0.1MHz<br />
<strong>to</strong>1GHz / 4GHz<br />
The EMI and EMS is covered by the interface between a<br />
3D field solver in the frequency domain (PamEMC <strong>from</strong><br />
ESI Group) and the network solver (Saber <strong>from</strong> Analogy<br />
Inc.). The Crosstalk was implemented by coupling the 2D<br />
FEM <strong>to</strong>ol (Crypte <strong>from</strong> ESI Group) and the CAD / CAE<br />
<strong>to</strong>ols SaberBundle / Saber. The figure 11 shows the typical<br />
simulation result of a EMI calculation.<br />
/3/ Au<strong>to</strong>motive System Simulation, Power Window<br />
FMEA, SAE Dependability Practices TOPTEC; 1-2<br />
November 1999, Joachim Langenwalter, Analogy Europe,<br />
Thomas Heurung, Analogy GmbH<br />
/4/ ANALYSIS AND OPTIMISATION OF AUTO-<br />
MOTIVE WIRE HARNESSES, January 2000, Andrew R.<br />
G. Patterson, Analogy UK Ltd.<br />
/5/ www.analogy.com, Analogy Inc., Beaver<strong>to</strong>n Oregon<br />
USA<br />
/6/ www.esi.fr, ESI Group, Paris France<br />
Figure 11: EMI calculation in PamEMC<br />
CONCLUSION<br />
It <strong>to</strong>ok 5 virtual iterations <strong>to</strong> design this example system of<br />
the power window within 4 weeks. Without an integrated<br />
design an analysis flow this would take several months,<br />
with ordering of components, assembly and hardware tests.<br />
A more complex and even more robust product is the key<br />
<strong>to</strong> success in the next generation, e.g. 42V Systems . It<br />
<strong>to</strong>ok over 30 years <strong>to</strong> debug our existing 14V systems, and<br />
create databooks and design rules for them. We do not<br />
have the time for those hardware iterations again.<br />
REFERENCES<br />
/1/ VDI Systemengineering in der KFZ-Entwicklung, Dec.<br />
1997, Wolfsburg, “Aufbau einer Integrationsplattform für<br />
physikalische Simulation”, Wolfsburg, M. Paulini, BMW<br />
AG, Dr. G. Triftshäuser, BMW AG, Dr. P. Willutzki,<br />
BMW AG, Joachim Langenwalter, Analogy Europe<br />
/2/ Mechatronics '98 in Skovde, Sweden, Sept. 9-11 1998,<br />
Hardware Oriented Modeling and System Identification:<br />
Breaking the Barrier between <strong>Design</strong> and Analysis, Mike<br />
Donnelly, Analogy, Inc., Beaver<strong>to</strong>n, OR and Joachim<br />
Langenwalter, Analogy Europe<br />
4
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