Sökning: "Transient phenomenon"

Visar resultat 6 - 10 av 55 avhandlingar innehållade orden Transient phenomenon.

1. 6. Modeling and Control of a PMSynRel Drive for a Plug-InHybrid Electric Vehicle

   Författare :Shuang Zhao; Chandur Sadarangani; Sigurd Övrebö; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric drive; feasible region; inductance spatial harmonics; integrated charger; permanent-magnet assisted synchronous reluctance machine; plug-in hybrid-electric vehicle; polarity detection; saturation and cross-saturation; sensorless control; signal injection; transient modeling.;

   Sammanfattning : This thesis presents two transient models for a prototype integrated charger for use in a plug-in hybrid-electrical vehicle application. The models can be useful in order to develop control algorithms for the system or to recommend improvements to the machine design. LÄS MER

3. 7. The bowed string

   Författare :Knut Guettler; KTH; []
   Nyckelord :Bowed string; violin; musical acoustics; musical transient; anomalous low frequencies; Helmholtz motion;

   Sammanfattning : Of the many waveforms the bowed string can assume, theso-called "Helmholtz motion" (Helmholtz 1862) gives the fullestsound in terms of power and overtone richness. The developmentof this steady-state oscillation pattern can take manydifferent paths, most of which would include noise caused bystick-slip irregularities of the bow-string contact. LÄS MER

4. 8. Antiretroviral treatment of HIV-1 in Sweden with focus on virological aspects

   Författare :Erik Sörstedt; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; HIV-1; antiretroviral therapy; transient viremia; viral blip; nucleoside transcriptase inhibitor resistance; dolutegravir; baseline viral load; HIV RNA; virological failure;

   Sammanfattning : From a clinical standpoint, there are many factors to consider when optimizing the care for people living with HIV (PLWH). With help from clinical guidelines, most obstacles can be addressed. Expanded knowledge is however in constant demand, from local conditions to universal processes. LÄS MER

5. 9. Health effects from occupational hand-arm vibration

   Författare :Per Vihlborg; Pål Graff; Sverre Wikström; Karim Makdoumi; Magnus Svartengren; Örebro universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hand-arm vibration; Raynaud’s phenomenon; vibration white finger; carpal tunnel syndrome; acute vibration exposure; neuropathy;

   Sammanfattning : Hand-arm vibration (HAV) is a common occupational exposure in Sweden and worldwide that causes both acute transient effects and persistent hand-arm symptoms. The health effects include vibration-induced Raynaud’s phenomenon, neuropathic symptoms, carpal tunnel syndrome (CTS), and musculoskeletal disorders. LÄS MER

7. 10. Signal processing approaches on otoacoustic emissions

   Författare :Jun Cheng; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :otoacoustic emissions; signal processing; time-frequency representation; cochlea; outer hair cell; neonatal hearing screening; basilar membrane nonlinearity; bounce phenomenon; spectral estimation; interrelations of OAEs;

   Sammanfattning : The recent achievement on the measurement of otoacoustic emissions (OAEs) is based on a novel technical development of digital signal processing. OAEs measured in the external ear canal are normal by-products of the active process in hearing, which was discovered by Kemp (1978). LÄS MER