Sökning: "fixed pitch"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden fixed pitch.
1. Control of variable speed wind turbines in a broad range of wind speeds
Sammanfattning : .... LÄS MER
2. Prediction of discomfort due to transient whole body vibrations
Sammanfattning : This Licentiate is about Whole Body Vibrations and focuses on transient vibrations with human's discomfort and motion assessment. Whole Body Vibrations occurs when a body is in contact with a vibrating surface. Whole Body Vibrations is a major problem in terrain vehicle, which affects both the physiological and psychological health and discomfort. LÄS MER
3. Modeling and Linear Quadratic Optimal Control of Wind Turbines
Sammanfattning : Control can improve the performance of wind turbines by enhancing the energy capture and reducing dynamic, as well as static, loads. There are several possible configurations of the control system, depending on the available actuators. LÄS MER
4. The linear and nonlinear biomechanics of the middle ear
Sammanfattning : This thesis addresses the biomechanics of the human middle ear, that part of the auditory system which converts sound pressure waves in air to fluid pressure waves in the cochlea. The middle ear's mechanism is analysed in four papers, three main and one supporting; in the main papers the middle ear is treated as a multi-particle, multi-rigid body ensemble possessing a variable number of degrees of freedom depending upon the case being investigated. LÄS MER
5. System Aspects of Marine Current Energy Conversion
Sammanfattning : Free-flowing water currents such as tides and unregulated water courses could contribute to world electricity production given the emergence of robust technical solutions for extracting the energy. At Uppsala University, a concept for converting water currents to electricity using a vertical axis turbine with fixed blade pitch and a direct drive permanentmagnet generator is studied. LÄS MER