Essays about: "Non-contact"

Showing result 1 - 5 of 44 essays containing the word Non-contact.

1. 1. Magnetic field separation for current prediction in three-phase systems : Regression-based current prediction

   University essay from Mälardalens universitet/Akademin för innovation, design och teknik

   Author : Sara Lenman; Sofia Blaad; [2023]
   Keywords : Alternating Current; Crosstalk Separation; Magnetic field sensors; Regression; Sensor technology; Three-phase system;

   Abstract : Current controls the motion of a manipulator. The manipulators at ABB are powered by a three-phase alternating current system where shunt resistors are utilised to measure the current to the motors. Magnetic field sensors are instead investigated to eliminate issues with power losses, the number of components and the cost of the shunt resistors. READ MORE

3. 2. Comparative analysis of contact and non-contact method for determining the natural frequencies of a bolted joint

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Malin Dyberg; Elvira Troillet; [2023]
   Keywords : ;

   Abstract : To ensure high assembly quality of components, a proper clamping force in bolted joints is essential. The existing tightening technology rely on torque and angle; however, this thesis proposes a method for obtaining the clamping force of a bolted joint based on measuring the natural frequencies. READ MORE

4. 3. Geological characterization of rock samples by LIBS and ME-XRT analytical techniques

   University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

   Author : Nsioh Elvis Nkioh; [2022]
   Keywords : geological characterization; analytical techniques; LIBS; ME-XRT; SEM; element maps; SEM-EDS; secondary electrons; rock samples; automated ore microscopy; SEM-Zeiss Merlin; element weight percentages; element oxide percentages; scanning techniques; analytical methods; laser induced breakdown spectrometry; multi energy x-ray transmission; scanning electron microscope; carbon coating; mineralogical classification; element composition; rock chemistry; rock chemical composition;

   Abstract : One of the major challenges in earth sciences and mineral exploration has been to determine with high accuracy and at a fast rate the elemental composition as well as the general chemistry of a rock sample. Many analytical techniques e.g. READ MORE

5. 4. PCBA verification and fault detection using a low-frequency GMR-based near-field probe with magnetic closed-loop feedback compensation : A non-contact alternative to physical probing

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Joacim Sundh; [2022]
   Keywords : GMR; sensor; magnetic field; near-field; probe; linearity; PCB; coil; PCBA; analogue integrated circuits; analog; operational amplifiers; electrical fault detection; feedback circuits; in-circuit tests; GMR; sensor; magnetfält; närfält; sond; linjäritet; mönsterkort; spole; kretskort; analoga integrerade kretsar; operationsförstärkare; elektrisk feldetektering; återkopplingskretsar; kretskortstest;

   Abstract : As electronics are getting both smaller and more advanced, the need to verify and validate remains and the means are getting more complex the more functions and components are added. Traditionally, in-circuit tests (ICTs) are performed by probing dedicated test points on the Printed Circuit Board Assembly (PCBA) in a test sequence that is unique to each product. READ MORE

6. 5. Temperature sensing on a linear wear test rig for plastic components

   University essay from KTH/Maskinkonstruktion (Inst.)

   Author : Anton Grahn; Sebastian Granlund; [2022]
   Keywords : Accelerated Life Testing; Wear; ALT; Thermocouple; Thin Film RTD; 3D-Printing; PA12; Heat Flow; Accelererad livslängdstestning; ALT; Förslitning; Termoelement; Film RTD; 3DUtskrivning; PA12; Värmeflöde;

   Abstract : För att verifiera att komponenter håller under en förväntad livslängd kan en Accelererad Livstids Testning (ALT) användas. En av huvudaspekterna som kan förstöra ett ALT-test av plastkomponenter är om kontakttemperaturen överstiger glasövergångstemperaturen. Detta eftersom det förändrar testkomponentens materialegenskaper. READ MORE