15th Triennial World Congress of the International Federation of Automatic Control
  Barcelona, 21–26 July 2002 
MULTI-AGENT SYSTEM BASED FUZZY CONTROLLER DESIGN WITH GENETIC TUNING FOR A SERVICE MOBILE MANIPULATOR ROBOT IN THE HAND-OVER TASK
Mustafa Suphi ERDEN1,2, Kemal LEBLEBİCİOĞLU1,2 and Uğur HALICI1,2
1 Department of Electrical & Electronics Engineering, 2 Machine Vision and Intelligent
Systems Laboratory.
Middle East Technical University.
06531, Ankara, Turkey.
suphi@metu.edu.tr, kleb@metu.edu.tr, halici@metu.edu.tr

This paper presents an application of the multi-agent system approach to a service mobile manipulator robot that interacts with a human during an object delivery and hand-over task in two dimensions. The base, elbow and shoulder of the robot are identified as three different agents, and are controlled using fuzzy control. The fuzzy rules of each agent are written considering the state of other agents besides its own state. While writing the rules effective delivery and avoiding the contact with human not to cause physical harm is considered. The membership functions of the fuzzy controllers are tuned using genetic algorithms. In tuning, the performance is calculated considering the deviation from the optimum path, time spent to reach the human hand and energy consumed by the actuators. The proposed multi agent system structure based on fuzzy control for the object delivery task succeeded in both effective and safe delivery.
Keywords: Agents, distributed control, fuzzy control, genetic algorithms, membership functions, delivery systems, robot arm
Session slot T-Th-M19: Mechatronic issues for robots/Area code 1g : Mechatronics Systems