[AllUsers-ISR] Public Lecture: Electromagnetic susceptibility - High Altitude Nuclear Electromagnetic Pulses (HEMP) field tests and statistical analysis to assess standards compliance

[Tony Almeida (DEEC)]

Public Lecture, Dr.-Ing. Lars Ole Fichte, Wednesday, March 6th at 15h00.
Auditorium A5.1 (DEEC/FCTUC)

 

I would like to invite you to attend the public lecture “Electromagnetic
susceptibility - High Altitude Nuclear Electromagnetic Pulses (HEMP) field
tests and statistical analysis to assess standards compliance” that will be
held by Dr.-Ing. Lars Ole Fichte (Helmut Schmidt University,
Hamburg-Germany) next Wednesday, March 6th, at 15h00, at the Auditorium A5.1
of Department of Electrical and Computer Engineering (DEEC/FCTUC).

 

 

Electromagnetic susceptibility - High Altitude Nuclear Electromagnetic
Pulses (HEMP) field tests and statistical analysis to assess standards
compliance

Abstract: Any electronic device has to be tested for its electromagnetic
susceptibility, i.e. the capability to function even under the influence of
an adverse external electromagnetic field. These tests are mandatory,
usually regulated by national law (or, in Europe, under European Union
regulation) and prescribed by test standards.

 

Alas, with the ever-growing number of electronic devices hitting the market
and the decline of quality due to cost pressure, several new questions arise
concerning the test setup used in susceptibility tests. This talk will line
out some of the future issues to be discussed, using HEMP test standards as
an example, since High Altitude Nuclear Electromagnetic Pulses (HEMP) are
among most extreme external signals that can interfere with an electric
device. 

 

Several statistical approaches to assess the quality of HEMP field tests are
presented and compared to the test protocol specified by a German standard.

The proposed schemes are based on acceptance sampling and confidence
intervals and improve the significance of the derived conclusions. Then, we
will apply binary regression models such as as  {\it logit} or {\it probit}
on the results of HEMP tests from the literature and discuss their effect on
the choice of test level, before additional possibilities of the regression
models will discussed. Concluding, an alternative was to determine the
optimal of tests will be presented which applies a bootstrapping re-sampling
technique

 



Short Bio:

Lars Ole Fichte finished his PhD on solving low frequency eddy current
problems with a semi-analytical method combining separation and boundary
integral methods in 2007 and has been working as a researcher at Helmut
Schmidt University since. His research interest include (but are not limited
to) precise measurement of electromagnetic fields in EMC test setups,
primarily Reverberation chambers, statistical investigations on EMC field
tests and the interaction of RF range fields with biological tissue. He is
the Chairman of German URSI commission K, a senior member of IEEE EMC
society, and works with various standardization committee, such as IEC
SC77C.

 

 

 

                                                                          

Tony Almeida, M.Sc, Ph.D

Assistant Professor

 

Departamento de Engenharia Electrotécnica e de Computadores

Faculdade de Ciências e Tecnologia 

Universidade de Coimbra

Pólo II - Pinhal de Marrocos

3030-290 Coimbra

Portugal

 

Gabinete 3A.23

Phone: +351 239 796 290

Fax: +351 239 796 247

 

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