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Assanimoghaddam, Mehran and Acquatella B., Paul (2017) Algebraic Estimation and Control of Single-Link Flexible Joint Robots. 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems, September 24–28, 2017, Vancouver, BC, Canada. doi: 10.1109/IROS.2017.8205976.
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Official URL: http://ieeexplore.ieee.org/document/8205976/
Abstract
This paper presents an algebraic approach for the estimation and control of single-link flexible joint robots. Typically, a sensory set to directly measure all robot states is hardly available. Especially in cost efficient robotic systems as widely used in the industry, robots do not profit from `link-sided' position measurements for end-effector control tasks but instead rely on easily accessible `motor-sided' measurements in combination with model-based control strategies. In this paper, we are interested in obtaining online estimates of the unmeasured link position and speed for use in control. To that end, we introduce an algebraic estimation approach which relies only on motor position sensing and an accelerometer mounted near the end-effector. The estimation is based on an algebraic reformulation of the equations of motion which are linear in the unknown variables allowing an estimation process which is of non-asymptotic fashion. The proposed solution is illustrated by simulation and experimentally with an industrial robot. The robot is controlled by a common 2-DOF structure consisting of feed forward and feedback control loops. Our experimental results show good tracking performance, especially in terms of suppressing residual vibrations.
| Item URL in elib: | https://elib.dlr.de/118399/ | |||||||||
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| Document Type: | Conference or Workshop Item (Speech) | |||||||||
| Title: | Algebraic Estimation and Control of Single-Link Flexible Joint Robots | |||||||||
| Authors: |
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| Date: | 2017 | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| DOI: | 10.1109/IROS.2017.8205976 | |||||||||
| Status: | Published | |||||||||
| Keywords: | Motion Control of Manipulators, Industrial Robots, Flexible Robots, Algebraic Estimation | |||||||||
| Event Title: | 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems | |||||||||
| Event Location: | Vancouver, BC, Canada | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | September 24–28, 2017 | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Space | |||||||||
| HGF - Program Themes: | Space System Technology | |||||||||
| DLR - Research area: | Raumfahrt | |||||||||
| DLR - Program: | R SY - Space System Technology | |||||||||
| DLR - Research theme (Project): | R - Terrestrial Assistance Robotics (old) | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Institute of System Dynamics and Control > Space System Dynamics | |||||||||
| Deposited By: | Assanimoghaddam, Mehran | |||||||||
| Deposited On: | 22 Jan 2018 14:39 | |||||||||
| Last Modified: | 22 Jan 2018 14:39 |
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