Essays about: "GMR"

Showing result 1 - 5 of 6 essays containing the word GMR.

  1. 1. 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

  3. 2. Automatic Speech Quality Assessment in Unified Communication : A Case Study

    University essay from Linköpings universitet/Programvara och system

    Author : Kevin Larsson Alm; [2019]
    Keywords : speech; voice; communication; qoe; quality of experience; unified communication; uc; speech quality assessment; speech quality; voice calls; gaussian mixture model; gmm; gaussian mixture regression; gmr; mel frequency cepstrum coefficients; mfcc; human feature cepstrum coefficients; hfcc; gammatone frequency cepstral coefficients; gfcc;

    Abstract : Speech as a medium for communication has always been important in its ability to convey our ideas, personality and emotions. It is therefore not strange that Quality of Experience (QoE) becomes central to any business relying on voice communication. READ MORE

  4. 3. High Accuracy Speed and Angular Position Detection by Dual Sensor

    University essay from Uppsala universitet/Fasta tillståndets fysik

    Author : Johan Östling; [2018]
    Keywords : Sensor; accuracy; camshaft; flywheel; speed sensor; pattern recognition; dual sensor; gmr; giant magnetoresistance; hall effect; universal; ferromagnetic;

    Abstract : For many decades there has been a need in many industries to measure speed and position of ferrous gears. This is commonly done by converting passing gear teeth from trigger wheels to electrical impulses to calculate speed and angular position. READ MORE

  5. 4. High Accuracy Speed and Angular Position Detection by Multiple Sensing

    University essay from Uppsala universitet/Fasta tillståndets elektronik

    Author : Nikola Stojanovic; [2017]
    Keywords : Sensors; Multiple Sensing; Hall; GMR; Gearbox;

    Abstract : The information from numerous sensors placed in modern vehicles is crucial for maximum performance. In the future, when commercial vehicles become fully autonomous, this information needs to be accurate in order to guarantee optimal performance as well as safety. READ MORE

  6. 5. Evaluation of Bone Contrast Enhanced MRI Sequences and Voxel Based Segmentation

    University essay from Radiofysik; Institutionen för fysik

    Author : Adam Johansson; [2010]
    Keywords : CT; MRI; MR; UTE; bone; GMM; GMR; radiotherapy; Hounsfield units; flip angle; segmentation;

    Abstract : An ultra-short echo time (UTE) magnetic resonance imaging (MRI) sequence was used together with other MRI sequences to evaluate the possibility of segmenting air, soft tissues and bone. Three patients were imaged with the UTE sequence and other sequences as well as with computed tomography (CT). READ MORE