The successful development of the Intelligent Wheelchair
(IWs) consists on their high performance and low cost. Like
all the other intelligent service robots, the main performance
of IWs includes: (i) The autonomous navigation capability
for good safety, flexibility, mobility, obstacle avoidance, etc.
(ii) The intelligent interface between the users and the IWs.
(iii) The adaptation of the IW control technique with the type
and the degree of handicap.