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Visar resultat 1 - 5 av 19 uppsatser som matchar ovanstående sökkriterier.

1. 1. Vibroacoustic Analysis of an OLTC Diverter Switch for Condition Monitoring : Time frequency analysis with Fourier and wavelet transform in combination with multivariate logistic regression for condition monitoring of OLTC diverter switch

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

   Författare :Simon Persson; [2023]
   Nyckelord :Wavelet transform; CWT; logistic regression; machine learning; ML; vibroacoustic analysis; time frequency analysis; tap changer; diverter switch; power transformer; classification; prediction; condition; vibrations; state prediction; Hitachi Energy;

   Sammanfattning : Vibrations are everywhere around us all the time and we often recognise them as sounds that we can hear and analyse with our brain. In this thesis, data that has been gathered from a diverter switch (DS) in a controlled environment, is analysed. LÄS MER

3. 2. Condition Monitoring (CM) : Concept selection of sensors for monitoring of mechanical wear

   M1-uppsats, Karlstads universitet

   Författare :Hampus Vinblad; [2022]
   Nyckelord :Condition Monitoring; mechanical wear; oil analysis;

   Sammanfattning : This bachelor thesis has been executed with the product development process double diamond. The thesis has been performed at Karlstad University in cooperation with Kongsberg Maritime in Sweden AB. The objective of the thesis has been to develop a condition monitoring system for Kongsberg’s waterjet department. LÄS MER

4. 3. Stamping Condition Monitoring : A complete measuring and process control system for Husqvarna Edge

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Theodor Johansson; [2022]
   Nyckelord :condition monitoring; Stamping; Shut height; automation; Pressing; Sensors; Inductive sensors; Process control;

   Sammanfattning : The project covers the substitution of a stamping shut height measurement at the chainsaw chain factory Husqvarna Edge, with a new sensor-based processmonitoring system, set to increase productivity and decrease running costs. The workflow covers the span from external and needs analysis to development and testing of both hardware and software, in conjunction with communication with external suppliers to find the most usable and profitable solution going forward. LÄS MER

5. 4. Bearing condition monitoring : An investigation on the possibility of monitoring aging of the lubricating grease by means of acoustic emission and temperature.

   Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Dilesh Raj Shrestha; [2021]
   Nyckelord :Acoustic Emission; Fourier Transform; Infrared Spectroscopy; Condition Monitoring; Total Acidic Number; Fast Fourier Transform; Scanning Electron Microscopy; Rheology; Bleed Oil; Grease degradation;

   Sammanfattning : Grease is among the most widely used lubricants in rolling element bearings. Proper understanding of the effect of lubrication due to grease aging can provide a significant increase in the life of the engineering systems. However, at present, there is no sufficient understanding of the grease aging effect in rolling elements bearing. LÄS MER

7. 5. Design of smart magnetic plug

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Oscar Schelén; [2021]
   Nyckelord :condition monitoring; magnet; metal particles; oil; sensor; raspberry pi; wear; debris; contamination; hydraulic motor;

   Sammanfattning : Bosch Rexroth in Mellansel is manufacturing hydraulic motors and constantly trying to improve their products to reduce downtime for their customers. An important thing to get a reliable system is to know the condition. In a hydraulic motor, it is crucial to determine the particle contamination of the oil to determine the condition. LÄS MER