Primerjava referenčnih kalibracij meritev elektromagnetne združljivosti elektromotorjev z uporabo programskih jezikov

Fon, Žiga (author), Kunaver, Matevž (mentor)

V podjetju MAHLE Electric Drives Slovenija d. o. o., poslovna enota Šempeter pri Gorici, imajo laboratorij za elektromagnetne raziskave, kjer opravljajo meritve na področju elektromagnetne združljivosti, ki so ključne za varnost in zanesljivost prodanih izdelkov. Natančnost meritev zagotavljajo z rednimi kalibracijami. Merilno opremo, ki povzroča elektromagnetno motnjo, se kalibrira z umerjeno sondo. Te kalibracije, ki so bile narejene v različnih letih, se primerja v raznih grafih. S temi primerjavami lahko ugotovimo, ali se merilna oprema iz leta v leto slabša. Tako lahko odkrijemo napake: premajhna moč generatorja, napake v kablu, anteni, ojačevalcu itd. [4]. Proces generiranja grafov sem se odločil avtomatizirati s pomočjo ustrezne aplikacije. Za razvoj sem uporabil programski jezik Python[2] in modul za izdelovanje grafov Matplotlib. Za pripravo programa sem uporabil orodje Pycharm [1] community IDE. Uporabljal sem razvojno metodo načrtovanja in preizkušanja (test driven development). Za to metodo je značilno, da najprej naredimo test in nato najpreprostejšo kodo, ki opravi ta test. Pri tem si pomagamo s pogovorom s strokovnjaki. Trudil sem se napisati čim bolj splošen, torej ne trdo zakodiran (»hard coded«) program, da je prijazen tako do vzdrževalca kot uporabnika. Sklenemo lahko, da je razvita programska rešitev učinkovito izpolnila svoj namen ter ključno prispevala k izboljšanemu razumevanju sprememb rezultatov kalibracije skozi leta. S tem smo zmanjšali količino dela, potrebnega za proizvajanje želenih grafov, omogočali uporabnikom učinkovito analiziranje in prikazovanje rezultatov meritev ter zagotovili pravilno delovanje v različnih okoliščinah.

• Language: Slovenian
• Keywords: primerjava referenčnih kalibracij, elektromagnetna združljivost, referenčni standardi, analiza, grafi
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FE - Faculty of Electrical Engineering
• Year: 2024
• PID: 20.500.12556/RUL-159306
• COBISS.SI-ID: 201090307
• Publication date in RUL: 05.07.2024

FON, Žiga, 2024, Primerjava referenčnih kalibracij meritev elektromagnetne združljivosti elektromotorjev z uporabo programskih jezikov [online]. Bachelor’s thesis. [Accessed 22 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=159306

Secondary language

• Language: English
• Title: Comparison of Reference Calibrations for Electromagnetic Compatibility Measurements of Electric Motors Using Programming Languages

Abstract

At MAHLE Electric Drives Slovenia Ltd., the business unit located in Šempeter pri Gorici, there is a laboratory for electromagnetic research, where measurements in the field of electromagnetic compatibility are performed, which are crucial for the safety and reliability of the products sold. The accuracy of the measurements is ensured by regular calibrations. The measuring equipment causing electromagnetic interference is calibrated with a calibrated probe. These calibrations, made in different years, are compared in various graphs. With these comparisons, we can determine whether the measuring equipment deteriorates from year to year. This way, we can detect errors: insufficient power of the generator, errors in the cable, antenna, amplifier, etc. [4]. I decided to automate the process of generating graphs using an appropriate application. For development, I used the Python programming language[2] and the Matplotlib module for graph creation. For program preparation, I used the PyCharm [1] community IDE. I used the test-driven development (TDD) methodology for development. This methodology is characterized by first creating a test and then the simplest code that passes that test. We rely on conversations with experts for this. I endeavored to write a program that is as general as possible, so not hard-coded, to be friendly to both maintainers and users. In conclusion, we can say that the developed software solution effectively fulfilled its purpose and significantly contributed to improved understanding of changes in calibration results over the years. This has reduced the amount of work needed to produce the desired graphs, enabled users to effectively analyze and display measurement results, and ensured proper operation in various circumstances.

• Keywords: calibration comparison, electromagnetic compatibility, reference standards, analysis, graphs