Search for dissertations about: "stability"

Showing result 16 - 20 of 4023 swedish dissertations containing the word stability.

  2. 16. Linear Model Predictive Control : Stability and Robustness

    Author : Johan Löfberg; Lennart Ljung; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Most real systems are subjected to constraints, both on the available control effort and the controlled variables. Classical linear feedback is in some cases not enough for such systems. This has motivated the development of a more complicated, nonlinear controller, called model predictive control, MPC. READ MORE

  4. 17. Temporal Subordinators and Clauses in Early Modern English : Stability and Change

    Author : Göran Rönnerdal; Merja Kytö; Christer Geisler; Raymond Hickey; Uppsala universitet; []
    Keywords : anteriority; aspect; complex subordinator; correlative subordinator; ellipsis; grammaticalization; modality; mood; negated subordinator; posteriority; primary meaning; repeated subordinator; replaced subordinator; secondary meaning; simple subordinator; simultaneity; temporal subordinator; tense; English; Engelska;

    Abstract : My work is a corpus-based investigation of the use and development of temporal subordinators and clauses in Early Modern British English (EModE).  The focus of the project is on the forms, structure, meanings, and history of these subordinators and clauses. READ MORE

  5. 18. Stability and Change : Exploring policy formations, options and choice in Swedish upper secondary education

    Author : Johanna Mellén; Göteborgs universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; educational choice; student recruitment; marketization; gender;

    Abstract : The key role Swedish upper secondary education plays in differentiating between higher education and labour market sectors has been discussed from an equality perspective over the last 60 years. Despite political incentives to reduce social biases students’ programme choices, research shows a persistent impact of both home environment and gender. READ MORE

  6. 19. Modeling of Modular Multilevel Converters for Stability Analysis

    Author : Luca Bessegato; Stefan Östlund; Staffan Norrga; Lennart Harnefors; Xiongfei Wang; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Modular multilevel converters MMCs ; stability; admittance; frequency-domain analysis; linearization techniques; current control; voltage control; ac ac converters; railway engineering.; Modulära multinivåomvandlare MMC ; stabilitet; admittans; frekvensanalys; linjäriseringsmetoder; strömreglering; spänningsreglering; ac ac omvandlare; järnvägsteknik.; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Modular multilevel converters (MMCs) have recently become the state-of-the-art solution for various grid-connected applications, such as high-voltage direct current (HVDC) systems and flexible alternating current transmission systems (FACTS). Modularity, scalability, low power losses, and low harmonic distortion are the outstanding properties that make MMCs a key technology for a sustainable future. READ MORE

  7. 20. Stability and transition of three-dimensional boundary layers

    Author : Seyed Mohammad Hosseini; Ardeshir Hanifi; Vassilios Theofilis; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Receptivity; stability; optimal growth; three-dimensional boundary layers; crossflow instability; roughness control; freestream turbulence; secondary instability;

    Abstract : A focus has been put on the stability characteristics of different flow types existing on air vehicles. Flow passing over wings and different junctions on an aircraft face numerous local features, ranging from different pressure gradients, to interacting boundary layers. READ MORE