Statistical EMC
Simulate EMC at three levels
RobustPhysics’ statistical wave physics software Stochastica supports EMC modeling at multiple levels.
- Conducted Emissions (CE) and crosstalk in cable harnesses
- Radiated Susceptibility (RS) levels in 3D field environments
- COUPLED Radiated and Conducted fields for equipment as-installed in the system-level assembly
Module 1 offers powerful, 3D multi-conductor transmission line analysis (including radiation losses) to predict conducted emissions (CE) and quantify unwanted crosstalk.
Module 2 simulates E and H field levels in connected cavities, to predict radiated susceptibility (RS) environments and design shielding effectiveness. Stochastica software makes it easy to define the volume and Q factors of cavities, as well as the apertures and excitation sources that predict the full statistical distribution of the 3D field in each domain.
Module 3 superimposes the the two foregoing (uncoupled) models to simulate the COUPLED environments (CE, CS, RE, RS) at system-level. Our patented hybrid statistical-deterministic solvers predict the maximum, mean and minimum E field in each cavity, and the differential mode (DM) cross talk in conductors and the common mode (CM) radiation currents of each cable harness segment. Small details that can affect these results at high frequencies are not neglected; they are the quantitative, physical basis for the statistical uncertainty bounds of the model predictions. Our non-parametric statistical formulation means this is a single, direct solution - no repeated Monte Carlo iterations for converged statistics.
Model supports design with the full EMC engineer's toolbox
The statistical EMC model doesn't just provide quantitative assessment of design compliance, it also allows quantitative evaluation of design improvements, supporting a wide range of standard solutions in the EMC engineers' toolbox. It is this aspect that can truly deliver EMC design to the integrated E-CAD and M-CAD design process.
How much simpler, faster, better ?
A statiscally-reduced model for cable coupling to high frequency cavity reveberant E fields (typically 100 MHz - 10+ GHz) involves orders of magnitude less model variables (degrees of freedom) than a numerical, full wave solution to Maxwells' equations. The result is orders of magnitude less model building time (no cavity detail required; no numerical meshing required), orders of magnitude faster model solution time and orders of magnitude easier - and more statistically robust - prediction of maximum expected field levels.
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How can statistical EMC simulation improve EMC testing ?
Statistical EMC simulation doesn't only benefit the system-level electro-mechanical design process; its also offers significant new opportunities in the EMC test / qualification process. Perhaps most powerful, it provides a quantitative basis for tailoring EMC environments - providing relief from CISPR (Comité International Spécial des Perturbations Radioélectriques) and MIL-STD (Military Standard) specifications when appropriate - AND reduces the number of system-level mock-up tests required to reproduce complex coupled field environments.
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Contact us if you'd like to learn more ...
We are interested and avaialble to discuss how this new technology could be implemented to improve EMC engineering for your organization
11622 El Camino Real
San Diego, CA, 92130
PO Box 883.Del Mar, CA 92014
PO Box 883.Del Mar, CA 92014