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Stopping criterion of time domain electromagnetic simulation(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2017年09
Page:
15-21
Research Field:
Publishing date:

Info

Title:
Stopping criterion of time domain electromagnetic simulation
Author(s):
?ZHANG Gang 1 YU Hong-hai 2 WANG Li-xin 1
?(1. School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China; 2. State Grid Heilongjiang Electric Power Co. ,Ltd. ,Maintenance Company,Harbin 150090,China)
Keywords:
time domain simulation stopping criterion vector fitting feature selective validation method
PACS:
TM 15
DOI:
10.15938/j.emc.2017.09.003
Abstract:
Because of the slow decay of energy,program has to be run for a large number of simulation steps before getting the response of resonant structures in the application of time domain electromagnetic solvers. To solve this problem,the Vector Fitting technology was employed to predict the frequency behavior based on a reasonable number of initial time steps. Then the predicted results were compared with the results from the previous iteration steps by the Feature Selective Validation method. Output of Feature Selective Validation method was adopted as the stopping criterion of the simulation. Also,relationship between the length of comparing step and stopping criterion was discussed. Calculation of the shielding effectiveness of a metal box with aperture was adopted to validate the proposed stopping criterion that is compared with traditional criterion based on energy attenuation. It is demonstrated that proposed stopping criterion can save simulation time that is consumed to reach the predefined accuracy. Therefore,it is useful to apply the vector fitting and feature selective validation method to the stopping criterion of time domain electromagnetic solvers for the simulation of resonant structures.

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Last Update: 2018-02-06