Initial Results from Using Preference Ranking Organization Methods for Enrichment of Evaluations to Help Steer a Powered Wheelchair

Abstract

Research is presented that uses the Preference Ranking Organization METHod for Enrichment of Evaluations II (PROMETHEE II) to determine a direction for a powered wheelchair. This is the first time this sort of decision making has been employed for this sort of use. A wheelchair user proposes a preferred speed and direction, and a decision-maker recommends a safe bearing. The two directions are combined so that the wheelchair safely avoids obstacles. Ultrasonic sensors and joysticks provide the inputs and the final direction is a combination of the preferred bearing and a route that safely avoids obstacles. The systematic decision-making process assists a powered wheelchair user with safely steering their wheelchair. Sensitivity analysis explores the potential directions and an appropriate direction is chosen that gives a robust solution. A user can override suggestions from the PROMETHEE II system by holding their joystick in a fixed place.

Simple Expert System for Intelligent Control and HCI for a Wheelchair fitted with Ultrasonic Sensors

“…On average, the new systems performed every test faster than the recently published system. Current new work is now investigating decision making [51][52][53][54][55][56].…”

Analysis of Reaction Times and Time-Delays Introduced into an Intelligent HCI for a Smart Wheelchair

“…Intelligence [31][32][33][34], input devices [35] and force sensing [36] could be included. Modelling [37][38][39][40] and decision making [40][41][42][43][44][45] are now being investigated for future application.…”

Management of Compressed Air to Reduce Energy Consumption Using Intelligent Systems

“…Future work will need to investigate AI [18][19][20][21][22][23][24][25] and Decision Making. The decision making research will include AHP and Preference Ranking Organization METHod for Enrichment of Evaluation (PROMETHEE) [26][27][28][29][30][31][32][33][34] and uncertainty will probably be denoted using probability functions, fuzzy set theory and percentages.…”