Essays about: "Helena Olofson"

Found 2 essays containing the words Helena Olofson.

1. 1. Rolling resistance during cornering - Impact of lateral forces for heavy-duty vehicles

   University essay from KTH/Optimeringslära och systemteori

   Author : Helena Olofson; [2015]
   Keywords : Bicycle model; lateral forces; rolling resistance; velocity optimization; Cykelmodell; sidokrafter; rullmotstånd; hastighetsoptimering; bränsleförbrukning;

   Abstract : We consider first the single-track bicycle model and state relations between the tires’ lateral forces and the turning radius. From the tire model, a relation between the lateral forces and slip angles is obtained. The extra rolling resistance forces from cornering are by linear approximation obtained as a function of the slip angles. READ MORE

3. 2. Restoration of clipped sound signals -a weighted Fourier series and AR approach

   University essay from KTH/Optimeringslära och systemteori

   Author : Anders Gidmark; Helena Olofson; [2013]
   Keywords : ;

   Abstract : Sound signals can be distorted in many dierent ways, one of them is called clipping. A clipped sound signal diers from a non-clipped signal in the way that the amplitudes of the sound wave that are higher than a certain amplitude threshold has been partially lowered or completely lowered to the threshold, the latter is called hard clipping. READ MORE