Search for dissertations about: "load sensing"

Showing result 1 - 5 of 30 swedish dissertations containing the words load sensing.

2. 1. Mechanical Characterisation of Coatings and Composites-Depth-Sensing Indentation and Finite Element Modelling

   Author : Zhi-Hui Xu; KTH; []
   Keywords : dept-sensing indentation; nanoindentation; finite element method; atomic force microscope;

   Abstract : In the past two decades depth-sensing indentation has becomea widely used technique to measure the mechanical properties ofmaterials. This technique is particularly suitable for thecharacterisation of materials at sub-micro or nano scale thoughthere is a tendency to extend its application to the micro ormacro scale. READ MORE

4. 2. Ground based measurements of upper atmospheric CO and H2O using microwave radiometry

   Author : Peter Forkman; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mesosphere; carbon monoxide; microwaves; radiometry; remote sensing; water vapour;

   Abstract : Long series of continuous measurements of middle and upper atmospheric constituents are needed to be able to understand the anthropogenic influence on the atmosphere. Phenomena like ozone depletion and the enhanced greenhouse effect are examples where the role of human activities has to be well investigated in order to make the right decisions of necessary changes in our way of life. READ MORE

5. 3. Inverse and optimization problems in electromagnetics -- a finite-element method perspective

   Author : JOHAN WINGES; Chalmers tekniska högskola; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microwave measurements; computational electromagnetics; finite element method; optimization; inductive power transfer; compressed sensing; wireless power; brick-tetrahedron hybrid; parameter estimation; inverse problems;

   Abstract : In this thesis, a selection of inverse and optimization problems are studied where the finite element method (FEM) serves as a comprehensive tool to solve electromagnetic field problems that lack an analytic solution. The inverse problems are typically formulated in terms of an optimization problem where the misfit between a measurement and the corresponding result of a computational model is minimized. READ MORE

6. 4. Planar-Goubau-line components for terahertz applications

   Author : Juan Cabello Sánchez; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; planar Goubau line; Through-Reflect-Line TRL calibration; stopband filter; on-wafer measurements; vector network analyzers VNA ; silicon membrane; power divider; Impedance-matched load; terahertz spectroscopy; microfluidic channels;

   Abstract : Terahertz-wave technology has a broad range of applications, including radio astronomy, telecommunications, security, medical applications, pharmaceutical quality control, and biological sensing. However, the sources, detectors, and components are less efficient at this frequency band due to parasitic effects and increased total losses, which hinder the performance of terahertz systems. READ MORE

7. 5. Mobile Working Hydraulic System Dynamics

   Author : Mikael Axin; Petter Krus; Marcus Geimer; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : This thesis deals with innovative working hydraulic systems for mobile machines. Flow control systems are studied as an alternative to load sensing. The fundamental difference is that the pump is controlled based on the operator’s command signals rather than feedback signals from the loads. READ MORE