Search for dissertations about: "anti-resonance"

Found 3 swedish dissertations containing the word anti-resonance.

2. 1. Vibrational energy harvesting for sensors in vehicles

   Author : Johan Bjurström; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; piezoelectric; anti-resonance; electromagnetic induction; prescribed displacement; low frequency; nonlinear dynamics; small amplitude excitation; automotive safety; vibration energy harvesting; unified modeling;

   Abstract : The miniaturization of semiconductor technology and reduction in power requirements have begun to enable wireless self-sufficient devices, powered by ambient energy. To date the primary application lies in generating and transmitting sensory data. READ MORE

4. 2. Torsional vibration absorbers in heavy-duty truck powertrains

   Author : Lina Wramner; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; friction; driveline; torsional vibrations; dual mass flywheel; PSVA; powertrain; tuned vibration absorber; power split vibration absorber; heavy-duty truck; simulations; anti-resonance; resonances; TVA; DMF;

   Abstract : The heavy-duty vehicle manufacturers face large challenges when it comes to reducing CO2 emissions from vehicles. The ongoing development of more efficient combustion engines leads to an increase in torsional vibrations. READ MORE

5. 3. Waves and Trajectories in Quantum Dots

   Author : Tomas Lundberg; Joan Martorell; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : This thesis deals with electron transport in low-dimensional semiconductor nanostructures,and in particular, systems with quasi zero-dimensional properties, called quantum dots. These systems are so small that the electron wavelength is comparable to the size of systems, which means that the wave nature of the electrons is of fundamental importance. READ MORE