Abstract
A modular cable-driven robot consists of a number of consecutively connected cable-driven joint modules. It has the advantages of lightweight structure and compliant behavior so that it can perform intrinsically safe human–robot interactions. However, a modular cable-driven robot normally has a low positioning accuracy due to the manufacturing and assembly errors in each of the cable-driven joint modules. In this work, a self-calibration method is proposed for the 2-DOF cable-driven universal joint module by utilizing its actuation redundancy. Different from the conventional self-calibration method where the absolute cable lengths need to be measured, the proposed error model is formulated based on the relative lengths changes of the diving cables. The effectiveness of the self-calibration method is verified through computer simulations.
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Acknowledgements
This research is supported by National Natural Science Foundation of China (Project code: 51705510 and 51475448) and Pre-research Project of Equipment Development Department of PRC Central Military Commission (61409230101), and Qianjiang Talent Project (QJD1602033).
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Zheng, T., Wang, Y., Yang, G., Shen, W., Fang, Z., Yang, K. (2020). Self-calibration Method for Two DOF Cable-Driven Joint Module. In: Jain, V., Patnaik, S., Popențiu Vlădicescu, F., Sethi, I. (eds) Recent Trends in Intelligent Computing, Communication and Devices. Advances in Intelligent Systems and Computing, vol 1006. Springer, Singapore. https://doi.org/10.1007/978-981-13-9406-5_118
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DOI: https://doi.org/10.1007/978-981-13-9406-5_118
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