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Admittance Controller with Spatial Modulation for Assisted Locomotion using a Smart Walker

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A Correction to this article was published on 11 July 2018

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Abstract

Smart Walkers are robotic devices that may be used to improve the stability in people with lower limb weakness or poor balance. Such devices may also offer support for cognitive disabilities and for people that cannot safely use conventional walkers. This paper presents an admittance controller that generates haptic signals to induce the tracking of a predetermined path. During use, when deviating from such path, the method proposed here varies the damping parameter of an admittance controller by means of a spatial modulation technique, resulting in a haptic feedback, which is perceived by the user as a difficult locomotion in wrong direction. The UFES’s Smart Walker uses a multimodal cognitive interaction composed by a haptic feedback, and a visual interface with two LEDs to indicate the correct/desired direction when necessary. The controller was validated in two experiments. The first one consisted of following a predetermined path composed of straight segments. The second experiment consisted of finding a predetermined path starting from a position outside of such path. When haptic feedback was used, the kinematic estimation error was around 0.3 (± 0.13) m and the force applied to move the walker was approximately 5 kgf. When the multimodal interaction was performed with the haptic and visual interfaces, the kinematic estimation error decreased to 0.16 (± 0.03) m, and the force applied dropped to around 1 kgf, which can be seen as an important improvement on assisted locomotion.

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  • 11 July 2018

    The original version of this article, unfortunately, contained errors.

References

  1. Population Division United Nations, Department of Economic and Social Affairs: World Population Ageing 2015 Technical report (2015)

  2. Alexander, N.B, disorders, A.G.: Gait search for multiple causes. Cleveland Clinic J. Med. 72(7), 586–600 (2005)

    Article  Google Scholar 

  3. Shields, M.: Use of wheelchairs and other mobility support devices 15(3), 37–41 (2014)

    Google Scholar 

  4. Bradley, S.M., Hernandez, C.R.: Geriatric assistive devices. Am. Fam. Phys. 84(4), 405–411 (2011)

    Google Scholar 

  5. Bateni, H., Maki, B.E.: Assistive devices for balance and mobility: Benefits, demands, and adverse consequences. Arch. Phys. Med. Rehab. 86, 134–145 (2005)

    Article  Google Scholar 

  6. Martins, M.M., Santos, C.P., Frizera-neto, A., Ceres, R.: Assistive mobility devices focusing on smart walkers classification and review. Robot. Auton. Syst. 60(4), 548–562 (2011)

    Article  Google Scholar 

  7. Wachaja, A., Agarwal, P., Zink, M., Reyes, M., Mȯller, K., Burgard, W.: Navigating blind people with walking impairments using a smart walker. Auton. Robot., 1–19 (2016)

  8. Morone, G., Annicchiarico, R., Iosa, M., Federici, A., Paolucci, S., Cortės, U., Caltagirone, C.: Overground walking training with the i -Walker, a robotic servo-assistive device, enhances balance in patients with subacute stroke: A randomized controlled trial. J. Neuro Eng. Rehab. 13, 1–10 (2016)

    Article  Google Scholar 

  9. Mf, C., Mou, W., Liao, C.K., Fu, L.C.: Design and implementation of an active robotic walker for Parkinson’s patients. SICE Annual Conference, pp. 2068–2073 (2012)

  10. Cifuentes, C.A., Frizera, A.: Human-Robot Interaction Strategies for Locomotion. Springer International Publishing, Switzerland (2016)

    Google Scholar 

  11. Robinson, H., MacDonald, B., Broadbent, E.: The role of healthcare robots for older people at home: A review. Int. J. Soc. Robot. 6(4), 575–591 (2014)

    Article  Google Scholar 

  12. Martins, M., Santos, C., Frizera, A., Ceres, R.: A review of the functionalities of smart walkers. Med. Eng. Phys. 37(10), 917–928 (2015)

    Article  Google Scholar 

  13. Lacey, G.J., Rodriguez-losada, D.: The evolution of Guido. IEEE Robot. Autom. Mag. 15, 75–83 (2008)

    Article  Google Scholar 

  14. Lee, G., Ohnuma, T., Young, N.: Design and control of JAIST active robotic walker. Intell. Serv. Robot. 3, 125–135 (2010)

    Article  Google Scholar 

  15. Valadȧo, C., Caldeira, E., Bastos-Filho, T., Frizera-Neto, A., Carelli, R.: A new controller for a smart walker based on human-robot formation. Sensors (Switzerland) 16(7), 1–26 (2016)

    Google Scholar 

  16. Geravand, M., Werner, C., Hauer, K., Peer, A.: An integrated decision making approach for adaptive shared control of mobility assistance robots. Int. J. Soc. Robot. 8(5), 631–648 (2016)

    Article  Google Scholar 

  17. Haoyong, Y., Spenko, M., Dubowsky, S.: An adaptive shared control system for an intelligent mobility aid for the elderly. Auton. Robot. 15, 53–66 (2003)

    Article  Google Scholar 

  18. Reyes Adame, M., Yu, J., Moeller, K.: Mobility support system for elderly blind people with a smart walker and a tactile map. In: XIV Mediterranean conference on medical and biological engineering and computing, vol. 57, pp 602–607. Springer, Cham (2016)

  19. José, L.: (CSIC) Pons. Wearable Robots: Biomechatronic Exoskeletons. Wiley, Madrid (2008)

    Google Scholar 

  20. Rampeltshammer, W., Peer, A.: Control of mobility assistive robot for human fall prevention. In: 2015 IEEE International Conference on Rehabilitation Robotics (ICORR), pp. 882–887. IEEE Xplore (2015)

  21. Ko, C.H., Young, K.Y., Yi, C.H., Agrawal, S.K.: Active and passive control of walk-assist robot for outdoor guidance. IEEE/ASME Trans. Mechatron. 18(3), 1211–1220 (2013)

    Article  Google Scholar 

  22. Cheng-kai, L., Huang, Y.-c., Lee, C.-j.: Adaptive guidance system design for the assistive robotic walker. Neurocomputing 170, 152–160 (2015)

    Article  Google Scholar 

  23. Cortės, U., Marti̇nez-velasco, A., Barruė, C., Benedico, T., Caltagirone, C., Annicchiarico, R.: A SHARE-it service to elders ’ mobility using the i-Walker. Gerontechnology 7, 95–100 (2008)

    Google Scholar 

  24. Egelman, D.M., Person, C., Montague, P.R.: A computational role for dopamine delivery in human decision-making. J. Cogn. Neurosci. 10, 623–630 (1998)

    Article  Google Scholar 

  25. Andaluz, V.H, Roberti, F., Toibero, J.M., Carelli, R., Wagner, B.: Adaptive dynamic path following control of an unicycle like mobile robot. In: Intelligent Robotics and Applications, chapter 56, pp 563–574. Springer, Berlin (2011)

  26. De la Cruz, C., Carelli, R.: Dynamic modeling and centralized formation control of mobile robots. In: IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics, pp. 3880–3885 (2006)

  27. Neto, A.F., Gallego, J.A., Rocon, E., Pons, J., Ceres, R.: Extraction of user ’ s navigation commands from upper body force interaction in walker assisted gait. Biomed. Eng. Online 9(1), 1–17 (2010)

    Article  Google Scholar 

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Acknowledgements

This research is supported by CAPES [grant number 88887.095626/2015-01], FAPES [grant number 72982608] and CNPq [grant number 304192/2016-3]. It is also acknowledged the support given by the National University of San Juan, Argentina.

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Authors and Affiliations

  1. Postgraduate Program in Electrical Engineering, Federal University of Espírito Santo, 29075-910, Vitoria, Brazil

    Mario F. Jiménez, Anselmo Frizera & Teodiano Bastos

  2. Institute of Automatics, National University of San Juan-CONICET, San Juan, 5400, Argentina

    Matias Monllor, Flavio Roberti & Ricardo Carelli

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  1. Mario F. Jiménez
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  2. Matias Monllor
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  3. Anselmo Frizera
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  4. Teodiano Bastos
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  5. Flavio Roberti
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  6. Ricardo Carelli
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Correspondence to Mario F. Jiménez.

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Jiménez, M.F., Monllor, M., Frizera, A. et al. Admittance Controller with Spatial Modulation for Assisted Locomotion using a Smart Walker. J Intell Robot Syst 94, 621–637 (2019). https://doi.org/10.1007/s10846-018-0854-0

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