Abstract
This paper presents the optimal kinematic calibration of the Hexapod (6-UPS) parallel manipulator based on a new observability index. The polytope description, rather than the widely used ellipsoid one, is introduced to depict the inaccuracy of the identified parameters. Then, the infinity-norm of the residual errors is utilized to assess the calibration precision of the kinematic parameters, which should be minimized during the process of measurement configurations selection. In order to find the optimal configurations, the Particle Swarm Optimization (PSO) algorithm is employed in the proposed method and a collision mechanism is added to cope with the joint space boundary constraint of the studied manipulator. In the end, a numerical example is studied to verify the correctness and effectiveness of the proposed approach.
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Chen, G., Wang, H., Lin, Z. (2013). Optimal Kinematic Calibration of the 6-UPS Parallel Manipulator. In: Lee, J., Lee, M.C., Liu, H., Ryu, JH. (eds) Intelligent Robotics and Applications. ICIRA 2013. Lecture Notes in Computer Science(), vol 8102. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40852-6_39
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DOI: https://doi.org/10.1007/978-3-642-40852-6_39
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