Blar i PhD theses in Engineering and Sciences på emneord "VDP::Teknologi: 500::Maskinfag: 570"

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    • Condition Monitoring Methods for Large, Low-speed Bearings 

      Hemmer, Martin (Doctoral Dissertations at the University of Agder; no. 260, Doctoral thesis, 2020)
      In all industrial production plants, well-functioning machines and systems are required for sustained and safe operation. However, asset performance degrades over time and may lead to reduced effiency, poor product quality, ...

    • Hybrid modeling and control of mechatronic systems using a piecewise affine dynamics approach 

      Pasolli, Philipp (Doctoral Dissertation at the University of Agder; no. 273, Doctoral thesis, 2020)
      This thesis investigates the topic of modeling and control of PWA systems based on two experimental cases of an electrical and hydraulic nature with varying complexity that were also built, instrumented and evaluated. A ...

    • Improving Energy Efficiency and Motion Control in Load-Carrying Applications using Self-Contained Cylinders 

      Hagen, Daniel (Doctoral Dissertations at the University of Agder; no. 283, Doctoral thesis, 2020)
      Because of an increasing focus on environmental impact, including CO2 emissions and fluid spill pollution, inefficient hydraulic systems are being replaced by more environmentally friendly alternatives in several industries. ...

    • Mathematical Modelling and Analysis of Vehicle Frontal Crash using Lumped Parameters Models 

      Munyazikwiye, Bernard B. (Doctoral Dissertation at the University of Agder; no. 261, Doctoral thesis, 2020)
      A full-scale crash test is conventionally used for vehicle crashworthiness analysis. However, this approach is expensive and time-consuming. Vehicle crash reconstructions using different numerical modelling approaches can ...

    • Modeling and Control of Flexible Link Manipulators 

      Subedi, Dipendra (Doctoral Dissertations at the University of Agder; no. 373, Doctoral thesis, 2022)
      Autonomous maritime navigation and offshore operations have gained wide attention with the aim of reducing operational costs and increasing reliability and safety. Offshore operations, such as wind farm inspection, sea ...

    • Modeling, Simulation and Prediction of Vehicle Crashworthiness in Full Frontal Impact 

      Noorsumar, Gulshan (Doctoral Dissertations at the University of Agder; no. 400, Doctoral thesis, 2023)
      Vehicle crashworthiness assessment is critical to help reduce road accident fatalities and ensure safer vehicles for road users. Techniques to assess crashworthiness include physical tests and mathematical modeling and ...

    • Modelling and Detecting Faults of Permanent Magnet Synchronous Motors in Dynamic Operations 

      Attestog, Sveinung (Doctoral Dissertations at the University of Agder; no. 384, Doctoral thesis, 2022)
      Permanent magnet synchronous motors (PMSMs) have played a key role in commercial and industrial applications, i.e. electric vehicles and wind turbines. They are popular due to their high efficiency, control simplification ...

    • Online Condition Monitoring of Electric Powertrains using Machine Learning and Data Fusion 

      Senanayaka, Jagath Sri Lal (Doctoral Dissertations at the University of Agder; no. 270, Doctoral thesis, 2020)
      Safe and reliable operations of industrial machines are highly prioritized in industry. Typical industrial machines are complex systems, including electric motors, gearboxes and loads. A fault in critical industrial machines ...