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Visar resultat 1 - 5 av 17 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Fuel Optimal Powertrain Control for Heavy Trucks Utilizing Look Ahead

   Författare :Maria Ivarsson; Lars Nielsen; Jan Åslund; Jan Wikander; Linköpings universitet; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : The road topography in highways affects the powertrain control of a heavy truck substantially since the engine power is low in relation to the vehicle weight. In large road gradients constant speed is not possible to keep, which would have been beneficial otherwise, and in some uphills shifting gears becomes inevitable. LÄS MER

3. 2. Haptic and visual simulation of material cutting process : a study focused on bone surgery and the use of simulators for education and training

   Författare :Magnus G. Eriksson; Jan Wikander; Ingela Nyström; KTH; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; surgical simulation; virtual reality; haptic feedback; surgical training; medical simulators; metrics; 3D visualization; Medical technology; Medicinsk teknik;

   Sammanfattning : A prototype of a haptic and virtual reality simulator has been developed for simulation of the bone milling and material removal process occurring in several operations, e.g. temporal bone surgery or dental milling. The milling phase of an operation is difficult, safety critical and very time consuming. LÄS MER

4. 3. Haptic Milling Simulation in Six Degrees-of-Freedom : With Application to Surgery in Stiff Tissue

   Författare :Magnus G. Eriksson; Jan Wikander; Dwight Meglan; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Surgical simulation; Virtual reality; Haptic feedback; Surgical training; Medical simulators; 3D visualization; Six degrees-of-freedom; Bone milling;

   Sammanfattning : The research presented in this thesis describes a substantial part of the design of a prototypical surgical training simulator. The results are intended to be applied in future simulators used to educate and train surgeons for bone milling operations. LÄS MER

5. 4. An Ontological Approach to support Knowledge Sharing between Product Design and Assembly Process Planning (APP)

   Författare :Baha Hasan; Jan Wikander; Mauro Onori; Jonathan C. Borg; Jos'e Barata; Pär Mårtensson; Monica Bellgran; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; knowledge sharing; Ontology; semantics; assembly knowledge; assembly design and assembly process planning.; Production Engineering; Industriell produktion;

   Sammanfattning : Modern manufacturing organizations have to cope with several critical issues arising from the need for mass customization such as short product life-cycles, an increasing number of product variants and frequently changing customer requirements. One of the main factors that could aid overcoming those challenges is the use of information and communication technology (ICT) applications over a collaborative manufacturing environment, in which all stakeholders share and exchange knowledge across different manufacturing domains and applications. LÄS MER

7. 5. Quadruped robot control and variable leg transmissions

   Författare :Johan Ingvast; Jan Wikander; Harry Dankowicz; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; walking robot; quadruped; walking; crawl; trot; passively variable transmission; PVT; variable transmission; continuously variable transmission; velocity ratio; torque ratio; Other engineering mechanics; Övrig teknisk mekanik;

   Sammanfattning : The research presented in this thesis regards walking of quadruped robots, and particularly the walking of the Warp1 robot. The motivation for the robot is to provide a platform for autonomous walking in rough terrain. The thesis contains six papers ranging from development tools to actuation of robot legs. LÄS MER