Journal
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
Volume 21, Issue 6, Pages 1959-1969Publisher
INST CONTROL ROBOTICS & SYSTEMS, KOREAN INST ELECTRICAL ENGINEERS
DOI: 10.1007/s12555-022-0905-y
Keywords
Gait pattern generation; gait shock absorption; ground reaction force reduction; powered exoskeleton; robot mechanism design
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This paper proposes a mechanism for shock absorption in powered exoskeletons, which is integrated into the WalkON Suit for complete paraplegics. The aim is to address the issue of repetitive large impacts on ride comfort and musculoskeletal damage. The mechanism and gait pattern generation algorithm were verified through experiments with a human subject.
Powered exoskeletons for people with complete paraplegia are subject to repetitive large impacts due to the recurrent ground contacts. Those impact forces not only deteriorate the ride comfort but also cause a serious damage to the musculoskeletal system of the human wearing the powered exoskeleton. To address the issue, a mechanism to absorb shock for powered exoskeletons are proposed in this paper. The proposed shock absorption mechanism was integrated into the WalkON Suit, a powered exoskeleton for complete paraplegics. To obtain the desired performance of the proposed mechanism, the gait pattern of the powered exoskeleton was also designed. The mechanism and gait pattern generation algorithm were verified from experiments with a human subject.
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