Abstract
Twisting wire transmission mechanisms combined with electrical motors are attractive actuation systems in many applications including wearable devices due to their small volume, lightness, and compatibility with demanding environmental constraints. In this paper, the model for twisting string actuation commonly found in the literature is modified to consider the case when the wrapping rod it relies upon is of variable diameter. This addition allows for the motion speed of the device to be increased when desired. This mathematical model of the new system is detailed in the paper and provides numerical simulations subsequently validated with experimental results for many different cases. The impact on the important characteristics of the transmission of the design parameters are shown in details and the simulations highlight several improvements of the proposed design compared to existing twisting wire systems.
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Mouazé, N., Nguyen, T., Birglen, L. (2020). Twisting String Actuation with Noncircular Wrapping Rods. In: Larochelle, P., McCarthy, J. (eds) Proceedings of the 2020 USCToMM Symposium on Mechanical Systems and Robotics. USCToMM MSR 2020. Mechanisms and Machine Science, vol 83. Springer, Cham. https://doi.org/10.1007/978-3-030-43929-3_12
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DOI: https://doi.org/10.1007/978-3-030-43929-3_12
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