Search for dissertations about: "Actuators"

Showing result 1 - 5 of 205 swedish dissertations containing the word Actuators.

  2. 1. Paraffin Actuators in Microfluidic Systems

    Author : Marcus Lehto; Klas Hjort; Peter Woias; Uppsala universitet; []
    Keywords : Engineering physics; Paraffin; Actuators; Valve; Micropump; Teknisk fysik;

    Abstract : There is a need for reliable valves and pumps in microfluidics. A good microactuator is the key for low cost and high performance of these components.Paraffin wax is a promising material to be used as actuator material as is can produce large forces and large strokes. READ MORE

  4. 2. Modeling and Verification of Ultra-Fast Electro-Mechanical Actuators for HVDC Breakers

    Author : Ara Bissal; Göran Engdahl; Elena Lomonova; KTH; []
    Keywords : Actuators; Armature; Capacitors; Circuit breakers; Coils; Damping; Eddy currents; Elasticity; Electro-mechanical devices; Electromagnetic forces; Finite element methods; HVDC transmission; Image motion analysis; Magnetic domains; Magnetic flux; Magnetic forces; Magnetic materials; Magnets; Thermal analysis; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The continuously increasing demand for clean renewable energy has rekindled interest in multi-terminal high voltage direct current (HVDC) grids. Although such grids have several advantages and a great potential, their materialization has been thwarted due to the absence of HVDC breakers. READ MORE

  5. 3. Exploiting individual wheel actuators to enhance vehicle dynamics and safety in electric vehicles

    Author : Mats Jonasson; Annika Stensson Trigell; Tim Gordon; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; autonomous wheel corner; actuators; vehicle dynamics; control allocation; electric vehicles; vehicle modelling; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : This thesis is focused on individual wheel actuators in road vehicles intended for vehicle motion control. Particular attention is paid to electro-mechanical actuators and how they can contribute to improving vehicle dynamics and safety. READ MORE

  6. 4. Miniature Phase-Transistion Actuators

    Author : Lena Klintberg; Lars Montelius; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; materialvetenskap; Materials Science;

    Abstract : Clearly, there is a need for simple, strong actuators capable of large strokes in miniaturized systems such as valves and optical shutters.The basis for this work is the microstructure technology with processing techniques adopted from the integrated circuit industry. READ MORE

  7. 5. Actuators for autonomous microrobots

    Author : Niklas Snis; Stefan Johansson; Urban Simu; Alvo Aabloo; Uppsala universitet; []
    Keywords : Engineering physics; Locomotion; Microrobot; PZT; P VDF-TrFE ; Autonomous; Multilayer; Actuator; Teknisk fysik;

    Abstract : This thesis presents actuators used in autonomous microsystems. Characteristic for all actuators presented is the low drive voltage and the low power consumption. Different motion mechanisms have been studied and applied in various locomotion modules for microrobots. READ MORE