Sökning: "Fault"

Visar resultat 6 - 10 av 537 avhandlingar innehållade ordet Fault.

  1. 6. Modeling of PMSM Full Power Converter Wind Turbine with Turn-To-Turn Fault

    Författare :Joachim Härsjö; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turn-to-turn; full power converter wind turbine; permanent magnet synchronous machine PMSM modeling; fault detection.; fault; Wind turbine modeling; Wind energy;

    Sammanfattning : Over the past several years the number of renewable energy installations has shown a strong increase rate. Due to the ambition to close down fossil and nuclear power plants, this rate of increase is not expected to decline during the coming decades. In particular, wind energy represents one of the most dominant renewable energy sources. LÄS MER

  3. 7. Spot the difference! : On the way towards automated fault handling in district heating buildings

    Författare :Sara Månsson; Energihushållning; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Customer installations; Customer data; Data analysis; District heating; Experience from industry; Fault detection; Fault handling; Fault labelling; Return temperatures; Substation performance; Taxonomy;

    Sammanfattning : This thesis focuses on how district heating utilities may work with fault handling in customer installations as a tool to reduce their return temperature levels. Reduced return temperatures would make it possible to improve the efficiency of the district heating systems and decrease their environmental impact. LÄS MER

  4. 8. On Aspect-Oriented Implementation of Fault Tolerance

    Författare :Ruben Alexandersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Aspect-Oriented Programming; Fault Tolerance; Error Detection; Fault Injection;

    Sammanfattning : This thesis investigates the use of aspect-oriented programming for the purpose of implementing fault-tolerance in software. The feasibility of aspect-oriented programming languages is evaluated from the perspectives of expressiveness, overhead, and fault coverage. LÄS MER

  5. 9. Techniques for software implemented fault tolerance

    Författare :Ruben Alexandersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fault tolerance; aspect oriented programming; software fault injection;

    Sammanfattning : Software implemented node level fault tolerance is an important technique for meeting dependability requirements in embedded safety critical systems. This thesis deals with both the issues of implementing mechanisms for fault tolerance and their validation. LÄS MER

  7. 10. Multiple-Bit Errors in Computer Systems

    Författare :Rolf Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fault sim ulation; fault tolerance; single event upsets; error-correcting codes; multiple-bit errors; transient faults; fault modelling; physical fault injection;

    Sammanfattning : This thesis discusses the types of transient faults caused by heavy-ion or a-particle radiation that manifest as multiple-bit errors and how information redundancy techniques can achieve fault tolerance with respect to some classes of multiple-bit errors. The first part of the thesis considers the fault modelling problem, beginning with the problem of how single event upsets (SEUs) originating from faults in register cells in microprocessors manifest as primary errors. LÄS MER