Sökning: "loss minimization"

Visar resultat 11 - 15 av 23 avhandlingar innehållade orden loss minimization.

  1. 11. THz Ultra-wideband Passive Devices: Design, Simulation and Characterization

    Författare :Cristian Daniel López; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Superconducting Transition; Substrateless Finline; Compact waveguide twist; Marchand Baluns.; Broadband Waveguide to Substrate Transition;

    Sammanfattning : The last decades have seen an increasing interest in the THz research field, leading to a substantial improvement in technology and the emergence of new applications. In particular, the research on radio astronomy instrumentation has pushed millimeter and sub-millimeter technology boundaries and redefined state of the art. LÄS MER

  3. 12. On Control of Permanent-Magnet Synchronous Motors in Hybrid-Electric Vehicle Applications

    Författare :Oskar Wallmark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase-locked loop; signal injection; Electric drive; sensorless control; harmonics; position estimation; speed estimation; hybrid-electric vehicle; permanent-magnet synchronous motor; electric vehicle; vector control;

    Sammanfattning : This thesis deals with design and analysis of the control system structure for electric drives equipped with permanent-magnet synchronous motors with a salient rotor. The intended application is propulsion in electric- and hybrid-electric vehicles. LÄS MER

  4. 13. Model Based Impact Analysis and Security Measure Allocation for Control Systems

    Författare :Jezdimir Milosevic; Henrik Sandberg; Saurabh Amin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Improvement of cyber-security of industrial control systems is of utmost importance for our society. It has been recognized that many security vulnerabilities can be found in these systems, which if exploited may lead to dire consequences. LÄS MER

  5. 14. Safe Distributed Control Allocation for Articulated Heavy Vehicles

    Författare :Umur Erdinc; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control allocation; Heavy vehicles; jackknifing; electric vehicles; trailer swing; stability;

    Sammanfattning : The electrification of trucks is now followed by the electrification of trailers. Additionally, the maximum allowed length of vehicle combinations has been increased in many countries to enhance efficiency. LÄS MER

  7. 15. Open vs closed exposure of palatally displaced canines : clinical, patient-related outcomes and health economics

    Författare :Margitha Björksved; Farhan Bazargani; Rune Lindsten; Kristina Arnrup; Jonathan Sandler; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : The maxillary permanent canine usually erupts in the mouth between the ages of 11 and 12 years. Sometimes the canines are displaced toward the palatal side of the dental arch and eruption is disturbed. Palatally displaced canines (PDCs) are a frequent dental anomaly, present in 2% of the young population. LÄS MER