Abstract
Today, exoskeletons are widely applied to provide walking assistance for patients with lower limb motor incapacity. Most existing exoskeletons are under-actuated, resulting in a series of problems, e.g., interference and unnatural gait during walking. In this study, we propose a novel intelligent autonomous lower extremity exoskeleton (Auto-LEE), aiming at improving the user experience of wearable walking aids and extending their application range. Unlike traditional exoskeletons, Auto-LEE has 10 degrees of freedom, and all the joints are actuated independently by direct current motors, which allows the robot to maintain balance in aiding walking without extra support. The new exoskeleton is designed and developed with a modular structure concept and multi-modal human-robot interfaces are considered in the control system. To validate the ability of self-balancing bipedal walking, three general algorithms for generating walking patterns are researched, and a preliminary experiment is implemented.
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References
Brown-Triolo DL, Roach MJ, Nelson K, et al., 2002. Consumer perspectives on mobility: implications for neuroprosthesis design. J Rehabil Res Dev, 39(6):659–669.
Cenciarini M, Dollar AM, 2011. Biomechanical considerations in the design of lower limb exoskeletons. IEEE Int Conf on Rehabilitation Robotics, p.1–6. https://doi.org/10.1109/ICORR.2011.5975366
Fang Y, Yu Y, Chen F, et al., 2008. Dynamic analysis and control strategy of the wearable power assist leg. IEEE Int Conf on Automation and Logistics, p.1060–1065. https://doi.org/10.1109/ICAL.2008.4636308
Gao S, 2004. Practical Anatomical Atlas: Lower Limbs Volume. Shanghai Science and Technology Press, Shanghai (in Chinese).
Gardner AD, Potgieter J, Noble FK, 2017. A review of commercially available exoskeletons’ capabilities. 24th Int Conf on Mechatronics and Machine Vision in Practice, p.1–5. https://doi.org/10.1109/M2VIP.2017.8211470
Kajita S, Kanehiro F, Kaneko K, et al., 2001. The 3D linear inverted pendulum mode: a simple modeling for a biped walking pattern generation. IEEE/RSJ Int Conf on Intelligent Robots and Systems, p.239–246.https://doi.org/10.1109/IROS.2001.973365
Kajita S, Kanehiro F, Kaneko K, et al., 2003. Biped walking pattern generation by using preview control of zero-moment point. IEEE Int Conf on Robotics and Automation, p.1620–1626.https://doi.org/10.1109/ROBOT.2003.1241826
Katayama T, Ohki T, Inoue T, et al., 1985. Design of an optimal controller for a discrete-time system subject to previewable demand. Int J Contr, 41(3):677–699. https://doi.org/10.1080/0020718508961156
Kong K, Jeon D, 2006. Design and control of an exoskeleton for the elderly and patients. IEEE/ASME Trans Mech, 11(4):428–432. https://doi.org/10.1109/TMECH.2006.878550
Kong K, Moon H, Hwang B, et al., 2009. Impedance compensation of SUBAR for back-drivable force-mode actuation. IEEE Trans Rob, 25(3):512–521. https://doi.org/10.1109/TRO.2009.2019786
Kopp C, 2011. Exoskeletons for warriors of the future. Defence Today, 9(2):38–40.
McDonald JW, Sadowsky C, 2002. Spinal-cord injury. Lancet, 359(9304):417–425. https://doi.org/10.1016/S0140-6736(02)07603-1
Mertz L, 2012. The next generation of exoskeletons: lighter, cheaper devices are in the works. IEEE Pulse, 3(4):56–61. https://doi.org/10.1109/MPUL.2012.2196836
Mori Y, Taniguchi T, Inoue K, et al., 2011. Development of a standing style transfer system able with novel crutches for a person with disabled lower limbs. J Syst Des Dyn, 5(1):83–93. https://doi.org/10.1299/jsdd.5.83
National Spinal Cord Injury Statistical Center, 2016. Spinal Cord Injury Facts and Figures at a Glance. https://doi.org/www.nscisc.uab.edu/Public/Facts%202016.pdf
Protection B, Labour M, 1988. Human Dimensions of Chinese Adults, GB 10000-1988. National Standards of People’s Republic of China (in Chinese).
Shimmyo S, Sato T, Ohnishi K, 2013. Biped walking pattern generation by using preview control based on three-mass model. IEEE Trans Ind Electron, 60(11):5137–5147. https://doi.org/10.1109/TIE.2012.2221111
Strausser KA, Swift TA, Zoss AB, et al., 2010. Prototype medical exoskeleton for paraplegic mobility: first experimental results. ASME Dynamic Systems and Control Conf, p.453–458. https://doi.org/10.1115/DSCC2010-4261
Talaty M, Esquenazi A, Briceño JE, 2013. Differentiating ability in users of the rewalk™ powered exoskeleton: an analysis of walking kinematics. IEEE Int Conf on Rehabilitation Robotics, p.1–5. https://doi.org/10.1109/ICORR.2013.6650469
Tsukahara A, Hasegawa Y, Eguchi K, et al., 2015. Restoration of gait for spinal cord injury patients using HAL with intention estimator for preferable swing speed. IEEE Trans Neur Syst Rehab Eng, 23(2):308–318. https://doi.org/10.1109/TNSRE.2014.2364618
Vukobratović M, Borovac B, 2004. Zero-moment point—thirty five years of its life. Int J Humanoid Rob, 1(1):157–173. https://doi.org/10.1142/S0219843604000083
Zhang SM, Wang C, Wu XY, et al., 2016. Real time gait planning for a mobile medical exoskeleton with crutche. IEEE Int Conf on Robotics and Biomimetics, p.2301–2306. https://doi.org/10.1109/ROBIO.2015.7419117
Zoss AB, Kazerooni H, Chu A, 2006. Biomechanical design of the Berkeley lower extremity exoskeleton (BLEEX). IEEE/ASME Trans Mech, 11(2):128–138. https://doi.org/10.1109/TMECH.2006.871087
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Project supported by the Shenzhen Robotics Research Center Project, the National Natural Science Foundation of China (No. U1613219), the Shenzhen Technology Project, China (No. JSGG20160301160759264), and the Shenzhen Overseas Innovation and Entrepreneurship Research Program, China (No. KQJSCX20170731164301774)
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He, Y., Li, N., Wang, C. et al. Development of a novel autonomous lower extremity exoskeleton robot for walking assistance. Frontiers Inf Technol Electronic Eng 20, 318–329 (2019). https://doi.org/10.1631/FITEE.1800561
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DOI: https://doi.org/10.1631/FITEE.1800561