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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Effect Of Strain, Microstructure And Grain Boundaries On The Electrical Properties In Thin Films Of Colossal Magneto Resistive Oxides

Paranjape, Mandar A 01 1900 (has links) (PDF)
No description available.
2

Method for Monitoring and Analyzing Lead-Acid Batteries

Chobot, Simon, Hanssen, Johan January 2019 (has links)
Lead-acid batteries today are commonly used in the automotive industry with a considerable span of purposes, yet historically, a primary purpose of cranking the engine at ignition which does demand a high current drainage from a battery. These high drainages later result in a health implication which can be hard to detect without the proper tools and this thesis focuses on the development of those tools.To insure the health of a battery turns out to be a handy feature for most drivers today and early signs of deterioration may even warn a user in advance of damage or failure to insure that proper care is taken with a goal to extend every battery’s lifespan.The results of this thesis demonstrates great accuracy for the tools necessary for an accurate health estimation yet lacks extensive testing data to clearly verify an actual health estimation. Where the chapter of Further Work includes specific tests, error corrections and examples of how to achieve even greater accuracies. / Blybatterier används idag vanligen inom bilindustrin för ett stort antal ändamål, men historiskt sett har det ett primärt syfte att driva startmotorn vid tändning, vilket kräver en hög ström brukas från batteriet. Dessa höga strömmar resulterar senare i en hälsopåverkan som kan vara svår att upptäcka utan de korrekta verktygen och denna avhandling fokuserar på utvecklingen av just dessa verktyg.Att fastställa batteriets hälsa är en användbar tillgång för de flesta förare idag och tidiga tecken på försämring kan till och med varna en användare i förväg om nära förestående skador och således försäkra sig om att lämpliga åtgärder vidtas, med ett mål att förlänga alla batteriernas livslängd.Resultaten av denna avhandling visar en stor noggrannhet för de verktyg som behövs för en exakt hälsoestimering men saknar omfattande testdata för att tydligt verifiera denna estimering. I kapitlet “Further Work” ingår specifika tester, felkorrigeringar och exempel på hur man uppnår en ännu större noggrannhet.
3

Investigation of magnetic sensors and hardware design of a sensor platform for human-computer interaction purposes

Forsmark, Christopher January 2017 (has links)
Company A develops algorithms and hardware for the application of magnet tracking, to be able to use a dipole magnet as an interaction tool between humans and computers. This master thesis investigates the available magnetic sensors through a market survey and practical testing of a selection of the sensors in purpose to determine the most suitable magnetic sensor and magnetic sensor technology for the application of magnet tracking. With the most suitable sensor found in the investigation, a sensor platform is designed and manufactured. The sensor HMC5983 from Honeywell is found to be the most suitable sensor and is designed into the sensor platform, which also includes ,for instance, a wireless MCU, CC2640 from Texas Instru- ments, together with a PCB antenna and a PSU including a battery charger, BQ24075 from Texas Instruments. The most suitable mag- netic sensor technology was found to be magnetoresistive sensors. The sensor platform was designed according to the requirements and is working good enough to enable company A to start testing their algorithms for magnet tracking on the new platform.

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