Sökning: "two-stage threshold"

Hittade 5 avhandlingar innehållade orden two-stage threshold.

  1. 1. A Fault Detection Framework Using Recurrent Neural Networks for Condition Monitoring of Wind Turbines

    Författare :Yue Cui; Lina Bertling; Pramod Bangalore; Bikash C Pal; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; asset management; condition monitoring; fault detection; preventive maintenance; recurrent neural networks; two-stage threshold; wind power; kapitalförvaltning; underhållsstyrning; tillståndsövervakning; feldetektering; förebyggande underhåll; återkommande neurala nätverk; tvåstegs tröskel; vindkraft; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The global energy system is experiencing a transition to a sustainable system with ambitious targets for increased use of renewable energy. One key trend for this transition has been the large introduction of wind power and integration into the electricity grid. LÄS MER

  3. 2. Structural Health Monitoring of Bridges : Model-free damage detection method using Machine Learning

    Författare :Cláudia Neves; Raid Karoumi; John Leander; Ignacio Gonzalez; Eleni Chatzi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Health Monitoring; Machine Learning; Damage detection; Model-free based method; Artificial Neural Networks; Gaussian Process; Cost optimization; Byggvetenskap; Civil and Architectural Engineering;

    Sammanfattning : This is probably the most appropriate time for the development of robust and reliable structural damage detection systems as aging civil engineering structures, such as bridges, are being used past their life expectancy and beyond their original design loads. Often, when a significant damage to the structure is discovered, the deterioration has already progressed far and required repair is substantial. LÄS MER

  4. 3. Biogas production from thin stillage : exploring the microbial response to sulphate and ammonia

    Författare :Jan Moestedt; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The biogas plant in Norrköping (Tekniska verken i Linköping AB, publ.), Sweden, operates with thin stillage, a residue from bio-ethanol fermentation, as the main feedstock. Thin stillage is energy-rich due to its high protein content, but due to its high nitrogen and sulphate content is a somewhat complicated feedstock. LÄS MER

  5. 4. Modelling and Simulation of Gearset Behavior : Effects of Manufacturing Errors and Electrification

    Författare :Rikard Hjelm; Maskinelement; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrification; gears; LTCA; tip contact; pitch error; profile slope error; transmission error; tolerance; scrapping; lubrication; TEHL; optimization;

    Sammanfattning : Due to electrification, new demands are imposed on gears regarding e.g., quality, noise, lubrication, and gear ratio.Therefore, a better understanding of gearset meshing and operation is needed. LÄS MER

  7. 5. Low-Voltage Analog-to-Digital Converters and Mixed-Signal Interfaces

    Författare :Prakash Harikumar; Jacob Wikner; Atila Alvandpour; Dag T. Wisland; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Analog-to-digital converters (ADCs) are crucial blocks which form the interface between the physical world and the digital domain. ADCs are indispensable in numerous applications such as wireless sensor networks (WSNs), wireless/wireline communication receivers and data acquisition systems. LÄS MER