Search for dissertations about: "dynamic stability"

Showing result 1 - 5 of 405 swedish dissertations containing the words dynamic stability.

2. 1. Dynamic Models of Wind Turbines

   Author : Abram Perdana; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; frequency stability; variable-speed; modeling; power system stability; validation; aggregated model; fixed-speed; voltage stability; wind turbine;

   Abstract : The impact of wind power generation in the power system is no longer negligible. Therefore, there is an urgent need for wind turbine models that are capable of accurately simulating the interaction between wind turbines or wind farms and the power system. READ MORE

4. 2. Transforming the City of Kiruna : Stabilizing Change and Changing Stability

   Author : Chelsey Jo Huisman; Anna Bengtson; Susanne Åberg; Wendy Smith; Uppsala universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Change; Changing; Dialectical Process; Duality; Interaction; Interdependent Contradiction; Interorganizational Projects; Interorganizational Relationships; Process Perspective; Stability; Stabilizing; Transformation; Business Studies; Företagsekonomi;

   Abstract : With so much focus on change and transformation in the organizing of projects, stability is commonly separated from change and relegated to be a static characteristic. This gives the impression that stability is not even a part of the process of organizing a project. READ MORE

5. 3. Static Visualizations for Dynamic Hierarchies

   Author : Wiebke Köpp; Tino Weinkauf; Vijay Natarajan; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dynamic hierarchies; Static visualization; Pixel-based visualization; Scalar data; Topology; Layout stability; Dynamiska hierarkier; Statisk visualisering; Pixelbaserad visualisering; Skalärdata; Topologi; Layout-stabilitet; Datalogi; Computer Science;

   Abstract : Dynamic hierarchical data describes phenomena in a wide range of domains, from file management to demographics and business administration, as well as feature extraction results in spatial scientific data. As with all data, visualization is an integral step for gaining understanding about dynamic hierarchical data. READ MORE

6. 4. Analysis and Design of Hybrid Systems

   Author : Stefan Pettersson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; asymptotic stability; Lyapunov theory; exponential stability; piecewise quadratic Lyapunov functions; hybrid systems; stability; linear matrix inequalities; nonlinear systems; LMIs; control theory; fuzzy systems;

   Abstract : Many physical systems today are modeled by interacting continuous and discrete event systems. Such hybrid systems contain both continuous and discrete states that influence the dynamic behavior. READ MORE

7. 5. Model-Based Investigation of Machining Systems Characteristics : Static and Dynamic Stability Analysis

   Author : Andreas Archenti; Mihai Nicolescu; Amir Rashid; KTH; []
   Keywords : Machining systems; modelling; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : The increasing demands for precision and efficiency in machining call for new control strategies for machining systems based on the identification of static and dynamic characteristics under operational conditions. By considering the machining system as a closed-loop system consisting of a machine tool structure and a machining process, the join system characteristics can be analyzed. READ MORE