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Upper Limb Exoskeleton Control for Isotropic Sensitivity of Human Arm

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Wearable Robotics: Challenges and Trends

Part of the book series: Biosystems & Biorobotics ((BIOSYSROB,volume 16))

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Abstract

Most of today’s assistive devices are controlled to provide uniform assistance irrespectively from the configuration of the human arm and the direction of the movement. We propose an innovative control method for arm exoskeletons that takes into account both of these parameters and compensates the anisotropic property of the force manipulability measure, intrinsic to the biomechanics of the human arm. To test our controller we designed a set of reaching tasks where the subjects had to carry two different loads to targets at five different locations and of two different sizes. Reaching times and trajectories were analysed for the evaluation of the controller. Through the analysis of the average reaching times we found that our method successfully enhances the motion while the analysis of the average maximal deviation from the ideal trajectories showed that our method does not induce any additional dynamic behaviour to the user.

The work presented in this paper was supported by the European Unions’ Horizon 2020 research and innovation programme under grant agreement No. 687662—SPEXOR.

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Correspondence to Rok Goljat .

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Goljat, R., Petrič, T., Babič, J. (2017). Upper Limb Exoskeleton Control for Isotropic Sensitivity of Human Arm. In: González-Vargas, J., Ibáñez, J., Contreras-Vidal, J., van der Kooij, H., Pons, J. (eds) Wearable Robotics: Challenges and Trends. Biosystems & Biorobotics, vol 16. Springer, Cham. https://doi.org/10.1007/978-3-319-46532-6_71

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  • DOI: https://doi.org/10.1007/978-3-319-46532-6_71

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-46531-9

  • Online ISBN: 978-3-319-46532-6

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