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tethered robots

Robotica (1)

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Tether monitoring for entanglement detection, disentanglement and localisation of autonomous robots
Vishnu Arun Kumar Thumatty Rajan, Arjun Nagendran, Abbas Dehghani-Sanij, Robert C. Richardson
Journal:

Robotica / Volume 34 / Issue 3 / March 2016

Published online by Cambridge University Press:

03 July 2014, pp. 527-548
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Tethered mobile robots are ideal for electrically noisy environments and for time-consuming tasks that require robust data communication and uninterrupted power delivery. However, tethers may become entangled in cluttered environments, leading to immobilisation and consequent mission failure. This work addresses real-time monitoring of tethers to detect tether entanglement, perform disentanglement through tether following and localise within line of sight. Experimental hardware is proposed to implement the tether monitoring techniques. Experiments are performed for single and dual mobile robots to search a target environment and entanglement detection is shown to be successful using quantitative metrics such as mean localization error.