Search for dissertations about: "piezoelectric elements"

Showing result 1 - 5 of 7 swedish dissertations containing the words piezoelectric elements.

  2. 1. Robust energy management for IoT machine elements

    Author : Fredrik Häggström; Jerker Delsing; Jonny Johansson; Saul Rodriguez; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy harvesting; Rolling element bearing; Energy Storage; Industrial Electronics; Industriell elektronik;

    Abstract : Advancements in semiconductor technology have reached the point at which ambient energy in the surrounding environment can power sensors and microprocessors. This capability enables new strategies for energy management, which are necessary to continue the sensorization of our environment. READ MORE

  4. 2. Physics of piezoelectric shear mode inkjet actuators

    Author : Jürgen Brünahl; KTH; []
    Keywords : ;

    Abstract : This thesis describes work on piezoelectric shear modeactuators used in dropon- demand ink printing applications.These actuators comprise an array of ink channels micromachinedinto bulk Pb(ZrxTi1-x)O3(PZT) ceramics. READ MORE

  5. 3. Active Junction Control and Piezoelectric Hybrid Damping for Improving the Acoustic Performance of Lightweight Structures

    Author : Jonas Svensson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hybrid passive-active control; Piezoelectric shunt damping; Sound radiation; Active junction control;

    Abstract : Weight reduction is a key factor in lowering the fuel consumption and thereby the greenhouse emissions from vehicles. However, reducing the weight normally results in a deterioration of the acoustic performance. Thus, the purpose of this thesis is to investigate damping treatments for lightweight vehicle panels. READ MORE

  6. 4. Valve-less diffuser micropumps

    Author : Anders Olsson; KTH; []
    Keywords : ;

    Abstract : Today there is growing interest in research on microfluidicsystems, e.g., for chemical analysis systems and microdosagesystems. One of the basic components in microfluidic systems ismicropumps. READ MORE

  7. 5. Minuscular sculpturing

    Author : Greger Thornell; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; materialvetenskap; Materials Science;

    Abstract : Most of the processes employed in microstructure technology have been adopted from the fabrication scheme of integrated circuits (IC). Although being extremely reliable and cost efficient, they suffer from poor material and geometrical flexibility. READ MORE