Design Aspects of Lower Limb Exoskeleton

被引:0
作者
Arunkumar S. [1 ]
Sarath M. [1 ]
机构
[1] Department of Mechanical Engineering, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam
关键词
gait training; Lower limb exoskeleton; modeling; rehabilitation; simulation; sustainability;
D O I
10.2174/0122127976270240231116110837
中图分类号
学科分类号
摘要
Aim: This research work aimed at the design, simulation, and validation of a lower limb exoskeleton for rehabilitation. The device can provide regressive gait training for patients suffering from lower limb mobility disorders. Background: People suffering from mobility disorders, such as spinal cord injuries, and other related diseases are in high proportion. Exoskeletons play a vital role in enhancing the lifestyle of people with disorders. Devices that provide locomotion assistance and help in reducing the burden of thera-pists through effective and repetitive gait training are in high demand. Exoskeletons have further extended to the fields of the military to enhance the performance of physically abled persons. Prototype development of lower limb exoskeletons is too expensive and many of them are patented. The requirement for this system to perform human trials is subjective to several medical and ethical norms. Thus, there exists a need to evaluate and validate the exoskeleton designs. Methods: In this work, the design has been made inclusive of different body shapes and sizes. The device has been modeled in SOLIDWORKS and its structural integrity has been analyzed using the ANSYS software. Later, the model has been subjected to environmental assessment and then motion analysis using the ADAMS software. Results: The structural integrity analysis has revealed the design to be adequate to carry the applied load as the stresses induced were less than the yield strength of the material. The sustainability analysis showed that LLE made of aluminium alloy had less impact on the environment relative to the other two materials. Conclusion: The kinematic simulation revealed that the angular amplitudes, the reaction force of the right hip and knee joint, and the contact force between the shoe and the ground of the exoskeleton agreed well with the experimental findings of the literature. © 2024 Bentham Science Publishers.
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页码:123 / 131
页数:8
相关论文
共 28 条
[1]  
International perspectives on spinal cord injury, (2013)
[2]  
Bernhardt M, Frey G, Riener R., Hybrid force-position control yields cooperative behaviour of the rehabilitation robot lokomat, 9th Int Conf Rehabil Robot, pp. 536-539
[3]  
Gong C, Chow Khuen C, Guo Z, Yu Haoyong, A review of lower extremity assistive robotic exoskeletons in rehabilitation therapy, Crit Rev Biomed Eng, 41, 4-5, pp. 343-363, (2013)
[4]  
Vokubratovic M., Legged Locomotion Robots and Anthropo-morphic Mechanisms, MIHAILO PUPIN INSTITUTE, (1975)
[5]  
Rupal B S, Rafique S, Singla A, Singla M, Virk GS., Lower-limb exoskeletons: Research trends and regulatory guidelines in medical and non-medical applications, Int J Adv Robot Syst, 14, (2017)
[6]  
Carvey Mathey R., Metabolically efficient leg brace, (2005)
[7]  
Lower leg exosekelton system and method, (2022)
[8]  
Wu M, Hornby TG, Landry JM., A cable-driven locomotor training system for restoration of gait in human, Gait Posture, 33, 2, pp. 256-260, (2011)
[9]  
Hussain S, Xie SQ, Jamwal PK, Parsons J., An intrinsically compli-ant robotic orthosis for treadmill training, Med Eng Phys, 34, 10, pp. 1448-1453, (2012)
[10]  
Park HS, Ren Y, Zhang LQ., IntelliArm: An exoskeleton for diagnosis and treatment of patients with neurological impairments, Proceeding of the 2nd IEEE RAS & EMBS International Conference on Biomedical Robotics and Biomechatronics, pp. 109-114, (2008)