Sökning: "Non-linear resonance"
Visar resultat 16 - 20 av 43 avhandlingar innehållade orden Non-linear resonance.
16. Stabilization of an induction machine drive
Sammanfattning : Modern electric trains almost exclusively use inductionmachines fed by voltage source inverters for propulsion. Toreduce external as well as internal disturbances, an LC-filteris inserted between the input terminals of the drive and theinverter. LÄS MER
17. Parametrically pumped superconducting circuits
Sammanfattning : In this licentiate thesis, I present the design, fabrication, and characterization of superconducting parametric resonators, for use in quantum information processing. These devices are quarter-wavelength coplanar waveguide resonators (~5 GHz), terminated at one end by a non-linear inductance provided by a SQUID (superconducting quantum interference device). LÄS MER
18. Probing Electron Correlation on the Attosecond Timescale
Sammanfattning : This thesis describes how photoemission stimulated by an attosecond pulse train (APT) can be used to extract information on electron correlation in simple quantum systems such as atoms. The emission of the electron by an APT induces a reorganization of the electrons remaining in the ion core. LÄS MER
19. Stability and transition in pitching wings
Sammanfattning : The aeroelastic stability of airplanes is one of the most important aspects of airplane design. Flutter or divergence instabilities arising out of the interaction of fluid forces and structural elasticity must be avoided by design or through the limitation of the flight envelope. LÄS MER
20. Reliable hp finite element computations of scattering resonances in nano optics
Sammanfattning : Eigenfrequencies are commonly studied in wave propagation problems, as they are important in the analysis of closed cavities such as a microwave oven. For open systems, energy leaks into infinity and therefore scattering resonances are used instead of eigenfrequencies. LÄS MER