Essays about: "Jonas Petersson"

Showing result 6 - 8 of 8 essays containing the words Jonas Petersson.

1. 6. Torque Sensor Free Power Assisted Wheelchair

   University essay from Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE)

   Author : Jonas Johansson; Daniel Petersson; [2007]
   Keywords : torque sensor free; power assisted wheelchair; velocity disturbance controlled; power assisting; wheelchair; digital control; assisting power; motorized; sensor free; disturbance controlled; intelligent; rotational encoder; rotary encoder; electrical motors; development board; controller card;

   Abstract : A power assisted wheelchair combines human power, which is delivered by the arms through the pushrims, with electrical motors, which are powered by a battery. Today’s electric power assisted wheelchairs use force sensors to measure the torque exerted on the pushrims by the user. READ MORE

3. 7. A Review of Perceptual Image Quality

   University essay from Institutionen för teknik och naturvetenskap

   Author : Jonas Petersson; [2005]
   Keywords : Datorteknik; image quality; perception; color gamut; sharpness; print mottle; color shift; Datorteknik;

   Abstract : What is meant with print quality, what makes people perceive the quality of an image in a certain way? An inquiry was made about what the parameters are that strongly affect the perception of digital printed images. A subjective test and some measurements make the basis for the thesis. READ MORE

4. 8. MR Flow Imaging A Study of Flow Effects on the Gradient Echo Sequence

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Jonas Svensson; [1998]
   Keywords : MRI; Medicine and Health Sciences;

   Abstract : Effects of flow are a fundamental part of magnetic resonance imaging (MRI). Since almost every part of the body contains some kind of flow, the effects are seen in generally all MR images. READ MORE