Sökning: "crane"

Visar resultat 6 - 10 av 26 avhandlingar innehållade ordet crane.

  1. 6. Applications of embedded sensors in loader crane positioning and rotor RPM measurement

    Författare :Peng Cheng; Bengt Oelmann; Mattias O'Nils; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In this thesis, two novel applications involving embedded sensors arestudied, one dealing with loader crane positioning and the other involving rotorRevolutions Per Minute (RPM) measurement. The thesis presents a generalintroduction to the embedded sensor, its architecture and its use in mechanicalindustry, and provides the reader with an overview of conventional sensortechnologies within the fields of angle sensors and angular speed sensors, coveringtheir working principles, features, advantages and disadvantages and typicalapplications. LÄS MER

  3. 7. Meaning by metaphor : an exploration of metaphor with a metaphoric reading of two short stories by Stephen Crane

    Författare :Gunnar Backman; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; English language; Engelska språket;

    Sammanfattning : .... LÄS MER

  4. 8. Physical and psychosocial occupational strain

    Författare :Gunvor Gard; Luleå tekniska universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physiotherapy; Sjukgymnastik;

    Sammanfattning : This monography thesis is based on five empirical studies of physical and psychosocial occupational strain in working life. The first three studies concern the working environment of crane couplers. LÄS MER

  5. 9. Towards semi-automation of forestry cranes : automated trajectory planning and active vibration damping

    Författare :Szabolcs Fodor; Leonid Freidovich; Carlos Vázquez; Anton Shiriaev; Torben Ole Andersen; Umeå universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Forestry; forwarder cranes; semi-automation; slewing actuator; automated trajectory planning; oscillations; inner boom actuator; active vibration damping; frequency estimation; input shaping control technique; H2-optimal control;

    Sammanfattning : Forests represent one of the biggest terrestrial ecosystems of Earth, that can produce important raw renewable materials such as wood with the help of sun, air and water. To efficiently extract these raw materials, the tree harvesting process is highly mechanized in developed countries, meaning that advanced forestry machines are continuously used to fell, to process and to transport the logs and biomass obtained from the forests. LÄS MER

  7. 10. Electrification of Load Handling Hydraulic Systems : With a Focus on Loader Cranes

    Författare :Amy Rankka; Petter Krus; Alessandro Dell'Amico; Björn Eriksson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The work of this thesis is focused on creating the base for developing new hydraulic systems for mobile machinery tailored for an electric drive system. The loader crane is used as the principal application. LÄS MER