The latest statistics in Tunisia [1] show a number of
151423 of disabled people 42.5% of them have a motor
handicap, this number augment each year due to traffic
accidents. Some victims of a severe vascular accident in the
region of the brain stem remain in a state of complete
muscular paralysis. They can't communicate with those
around them, although they have all their cognitive faculties.
The use of wheelchairs (manual or electric) is very beneficial
for people with reduced mobility. Traditional electricpowered
wheelchairs (EPWs) are normally controlled by
users via joysticks. This type EPWs cannot satisfy the needs
of elderly and disabled users who have restricted limb
movements caused by some diseases such as parkingson's
disease and quadriplegics.