Search for dissertations about: "Fredrik Svahn"

Showing result 1 - 5 of 6 swedish dissertations containing the words Fredrik Svahn.

  2. 1. Digital Product Innovation : Building Generative Capability through Architectural Frames

    Author : Fredrik Svahn; Ola Henfridsson; Jonny Holmström; Sandeep Purao; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; digital innovation; product innovation; generativity; modularity; patterns; architecture; architectural frames;

    Abstract : Over the last decades we have witnessed a profound digitalization of tangible products. While this shift offers great opportunities, it also exposes product developing industries to significant challenges. READ MORE

  4. 2. Low-cost control of discontinuous systems including impacts and friction

    Author : Fredrik Svahn; Annika Stensson Trigell; Harry Dankowicz; Jenny Jerrelind; Remco Leine; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear dynamics; discontinuities; nonlinear control; impacts; friction; vehicle suspensions; Vehicle engineering; Farkostteknik;

    Abstract : For a successful design of an engineering system it is essential to pay careful attention to its dynamic response. This is particularly true, in the case of nonlinear systems, since they can exhibit very complex dynamic behaviour, including multiple co-existing stable solutions and chaotic motions, characterized by large sensitivity to initial conditions. READ MORE

  5. 3. On the stability and control of piecewise-smooth dynamical systems with impacts and friction

    Author : Fredrik Svahn; Annika Stensson Trigell; Harry Dankowicz; Jenny Jerrelind; Lawrie Virgin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; non-smooth dynamics; nonlinear control; low-velocity impacts; friction; bifurcations; Solid mechanics; Fastkroppsmekanik;

    Abstract : This thesis concerns the analysis of dynamical systems suitable to be modelled by piecewise-smooth differential equations. In such systems the continuous-in-time dynamics is interrupted by discrete-in-time jumps in the state or governing equations of motion. READ MORE

  6. 4. Tribology of Carbon Based Coatings for Machine Element Applications

    Author : Fredrik Svahn; Åsa Kassman-Rudolphi; Sture Hogmark; Mats Larsson; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Abstract : Demands on lower fuel consumption, reduced pollution, increased operating times, etc. force the automotive industry to constantly improve the performance of critical machine elements. In this development various carbon based coatings have proven very promising, mainly because of their low friction and high wear resistance in dry sliding contacts. READ MORE

  7. 5. Prediction Methods for High Dimensional Data with Censored Covariates

    Author : Caroline Svahn; Oleg Sysoev; Mattias Villani; Fredrik Gunnarsson; Xavier de Luna; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; statistics; machine learning; censored covariates; statistik; maskininlärning; censurerade kovariater;

    Abstract : While access to data steadily increases, not all data are straight-forward to use for prediction. Censored data are common in several industrial scenarios, and typically arise when there are some limitations to measuring equipment such as for instance concentration measuring equipment in chemistry or signal receivers in signal processing. READ MORE