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Visar resultat 1 - 5 av 116 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. On Direct Drive Bone Conduction Devices - Hearing Rehabilitation and Objective Assessment of Stimulation Methods

    Författare :Cristina Rigato; Chalmers tekniska högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bone Conduction Implant; audiology; comparative study; Direct Drive; active transcutaneous; vibrations; Bone Conduction Devices;

    Sammanfattning : Bone conduction devices (BCDs) rely on the transmission of sound in form of vibrations generated by a transducer to the inner ear via the skull and surrounding soft tissues. Direct drive BCDs stimulate the skull bone directly, either via a skin-penetrating abutment (BAHAs, Bone Anchored Hearing Aids), or with a transducer implanted under intact skin (active transcutaneous devices). LÄS MER

  3. 2. Design of Direct-driven Permanent-magnet Generators for Wind Turbines

    Författare :Anders Grauers; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optimization; direct drive; synchronous generator; wind turbine; design; low speed; permanent magnet; frequency converter;

    Sammanfattning : This thesis presents an investigation of how a direct-driven wind turbine generator should be designed and how small and efficient such a generator will be. Advantages and disadvantages of various types of direct-driven wind turbine generators are discussed, and a radial-flux permanent-magnet generator connected to a forced-commutated rectifier is chosen for a detailed theoretical investigation. LÄS MER

  4. 3. Permanent magnet generator for direct drive wind turbines

    Författare :Andreas Solum; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 4. Electromagnetical Dynamics of a Direct Drive Wave Energy Converter

    Författare :Mikael Eriksson; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Simulation of Direct Drive Generator for Underwater Power Conversion

    Författare :Erik Segergren; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER