Title :
Eddy current based, contactless position transducer for a gas handle
Author :
Van den Bossche, Alex ; Sergeant, Peter
Author_Institution :
Dept. of Electr. Energy, Syst. & Autom., Ghent Univ., Ghent, Belgium
Abstract :
In electric vehicles, it is normal to have an electronic set value for `gas´ and for `brake´. Traditional potentiometers with sliding contacts are not reliable. Magnetoresistive sensors or hall effect sensors need a magnet on the moving part. The proposed sensor just needs iron on the moving part. It uses an oscillator circuit where the absorbed current is an indication of damping, so how close the iron is to the sensor. The component cost is low and the output has a soft gradual change with the displacement.
Keywords :
Hall effect transducers; automotive electronics; eddy currents; electric sensing devices; electric vehicles; magnetoresistive devices; oscillators; contactless position transducer; eddy current iron loss sensor; electric vehicles; electronic set value; gas handle; hall effect sensors; magnetoresistive sensors; oscillator circuit; sliding contacts; Coils; Copper; Iron; Oscillators; Sensors; Steel; Transistors; Transducer; drive by wire; electric vehicle; oscillator; sensor;
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2010 IEEE
Conference_Location :
Lille
Print_ISBN :
978-1-4244-8220-7
DOI :
10.1109/VPPC.2010.5729046