Search for dissertations about: "velocity ratio"

Showing result 1 - 5 of 197 swedish dissertations containing the words velocity ratio.

  2. 1. Quadruped robot control and variable leg transmissions

    Author : Johan Ingvast; Jan Wikander; Harry Dankowicz; KTH; []
    Keywords : 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;

    Abstract : 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. READ MORE

  4. 2. On Rolling Variators, A study of power transmitting rolling variators when changing speed ratio

    Author : Göran Brännare; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; friction drives; traction drives; variators; traction; CVT; speed ratio change; rolling traction trnasmissions; continously variable transmissions; rolling contact drives; transmission ratio change;

    Abstract : The introduction of the concept Rolling Variators is proposed for rolling contact continuously variable transmission.A theoretical study of rolling variators when changing the speed ratio during power transmission is presented. READ MORE

  5. 3. On some positive effects of swirling flow for the continuous cast mould billets

    Author : Shavkat Kholmatov; Pär Jönsson; Simon Lille; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swirling flow; round mould; divergent angle; aspect ratio; temperature distribution; velocity fluctuations; continuous casting of steel; mathematical modeling; CFD; Metallurgical process engineering; Metallurgisk processteknik;

    Abstract : Continuous caster moulds are the last and most important stage in the steelmaking process, where inclusions can either be generated or removed. With increasing casting speed using conventional immersion nozzles critical problems, such as unstable bulk mould flow have been noticed. READ MORE

  6. 4. Hyperemic Brachial Artery Blood Flow Velocity

    Author : Susann J Järhult; Lars Lind; Johan Sundström; Peter Friberg; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE; MEDICIN; Cardiovascular medicine; Kardiovaskulär medicin; Medicinsk vetenskap; Medical Science;

    Abstract : This thesis aims to evaluate the blood flow velocity in the Brachial artery during reactive hyperemia. Primarily to appraise the information it might contain regarding cardiovascular function and cardiovascular risk. READ MORE

  7. 5. Optical frequency modulated continuous wave (FMCW) range and velocity measurements

    Author : Daniel Nordin; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Electronics; Industriell elektronik;

    Abstract : By using a tunable laser diode and fiber components small compact ranging and radial velocity measuring systems can be realized utilizing a frequency modulating continuous wave (FMCW) technique. The thesis start with an introduction that explains some basic theory behind laser diodes, photodiodes and different optical measuring techniques. READ MORE