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A general learning approach to multisensor based control using statistic indices

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4 Author(s)
von Collani, Y. ; Tech. Comput. Sci., Bielefeld Univ., Germany ; Ferch, M. ; Jianwei Zhang ; Knoll, A.

We propose a concept for integrating multiple sensors in real-time robot control. To increase the controller robustness under diverse uncertainties, the robot systematically generates series of sensor data (as robot state) while memorising the corresponding motion parameters. From the collection of (multi-) sensor trajectories, statistical indices for each sensor type can be extracted. If the sensor data are preselected as output relevant, the principal components can be used very efficiently to approximately represent the original perception scenarios. After this dimension reduction procedure, a nonlinear fuzzy controller can be trained to map the subspace projection into the robot control parameters. We apply the approach to a real robot system with two arms and multiple vision and force/torque sensors. These external sensors are used simultaneously to control the robot arm performing insertion and screwing operations. The experiments show that the robustness as well as the precision of robot control can be enhanced by integrating multiple additional sensors using this concept

Published in:

Robotics and Automation, 2000. Proceedings. ICRA '00. IEEE International Conference on  (Volume:4 )

Date of Conference:

2000