The Robotics Group of the University of Patras is interested in the following three tasks:
- Development of a Knowledge-based System for the generation of assembly strategies.
- Simulation of robot cells for assembly of a valve produced by Zita Ltd.
- Development of a Hybrid Force/Position Controller for the implementation of assembly strategies.
Knowledge Based System
- 以知识为基础的系统接受作为输入IGES files where the parts are containing geometrical data for the parts to be assembled.
- The parts are classified according to their Geometric Features.
- The parts for each assembly task are classified as either moving or stationary.
- The C-Frames is defined on the moving part.
- The artificial constraints of each assembly subtask are formulated according to the contact case between the moving and the stationary part.
A special algorithm for the identification of the contact case is developed. This algorithm inputs the signal from the force sensor. In addition, a fuzzy decision system has been developed in order to reason about the feasibility of the assembly with respect to the tolerances between the two parts and the robot repeatability error.