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Sensors 2017, 17(11), 2608; https://doi.org/10.3390/s17112608

Enhancing the Trajectory Generation of a Stair-Climbing Mobility System

1
Instituto Tecnológico de Ciudad Guzmán (ITCG), Tecnológico Nacional de México (TecNM), Ciudad Guzmán 49100, Mexico
2
School of Industrial Engineering, University of Castilla-La Mancha (UCLM), 02071 Albacete, Spain
3
School of Industrial Engineering, University of Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain
*
Author to whom correspondence should be addressed.
Received: 18 September 2017 / Revised: 27 October 2017 / Accepted: 9 November 2017 / Published: 13 November 2017
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2017)

Abstract

Recent advances in mobile robotic technologies have enabled significant progress to be made in the development of Stair-Climbing Mobility Systems (SCMSs) for people with mobility impairments and limitations. These devices are mainly characterized by their ability to negotiate those architectural barriers associated with climbing stairs (curbs, ramps, etc.). The development of advanced trajectory generators with which to surpass such architectural barriers is one of the most important aspects of SCMSs that has not yet been appropriately exploited. These advanced trajectory generators have a considerable influence on the time invested in the stair climbing process and on passenger comfort and, consequently, provide people with physical disabilities with greater independence and a higher quality of life. In this paper, we propose a new nonlinear trajectory generator for an SCMS. This generator balances the stair-climbing time and the user’s comfort and includes the most important constraints inherent to the system behavior: the geometry of the architectural barrier, the reconfigurable nature of the SCMS (discontinuous states), SCMS state-transition diagrams, comfort restrictions and physical limitations as regards the actuators, speed and acceleration. The SCMS was tested on a real two-step staircase using different time-comfort combinations and different climbing strategies to verify the effectiveness and the robustness of the proposed approach. View Full-Text
Keywords: architectural barriers; stair-climbing mobility system; trajectory generation; assistive technology architectural barriers; stair-climbing mobility system; trajectory generation; assistive technology
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chocoteco, J.A.; Morales, R.; Feliu-Batlle, V. Enhancing the Trajectory Generation of a Stair-Climbing Mobility System. Sensors 2017, 17, 2608.

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