Design and Analysis of Mechanical-hydraulic Component to Harvest Energy from Human Walking

doi:10.3901/JME.2018.20.170

Abstract

Abstract: Considerable energy is generated by foot during human walking. Harvesting such energy is expected to solve the problem of energy supply for wearable electronic devices and even exoskeleton effectively. An energy recovery device is designed to achieve energy conversion into hydraulic power for the drive system of exoskeleton. In order to cover the shortage of the previous research without consideration of human walking dynamics, a 3 DOF dynamic model is established based on the gait analysis to formulate the single leg walking motion. The relationships between foot-ground interactions and time as well as foot attitude in a gait cycle are studied taking the adult as a reference. The forces acting on the ground by foot during walking and their vertical and horizontal components are obtained. The angle between the ground reaction force and the walking direction of pedestrian is measured by simulation. Given the energy distribution during walking, the recovery and storage device is proposed to convert the work done by foot into hydraulic oil energy by collecting the power induced by vertically applied foot force. It is estimated by computation that the hydraulic power of about 20 W can be captured from single foot averagely during human walking without load.

Key words: ADAMS simulation, energy recovery, gait, human walking dynamics, hydraulic power

CLC Number:

TH137

SHI Hu, WANG Zheng, HE Bin, MEI Xuesong, JIA Kun. Design and Analysis of Mechanical-hydraulic Component to Harvest Energy from Human Walking[J]. Journal of Mechanical Engineering, 2018, 54(20): 170-179.

References

[1] LORETO M,FRANCESC M. Review of energy harvesting techniques and applications for microelectronics[C]//Proc. SPIE 5837,VLSI Circuits and Systems Ⅱ,June 2005:359-373.
[2] JOHN K,CLYDE K,JOSEPH P,et al. Parasitic power harvesting in shoes[C]//Proceedings of Second International Symposium on Wearable Computers,October 1998:132-139.
[3] XIE L,CAI M. Increased piezoelectric energy harvesting from human footstep motion by using an amplification mechanism[J]. Applied Physics Letters,2014,105(14):143901.
[4] YANG W,CHEN J,ZHU G,et al. Harvesting energy from the natural vibration of human walking[J]. ACS Nano,2013,7(12):11317-11324.
[5] 王伟,曹军义,林京,等. 一种非线性双稳态人体运动能量俘获技术[J]. 西安交通大学学报,2015,49(8):58-63. WANG Wei,CAO Junyi,LIN Jing,et al. Nonlinear bi-stable energy harvester from human motion[J]. Journal of Xi'an Jiaotong University,2015,49(8):58-63.
[6] LAWRENCE C R,LOUIS F,EVAN M,et al. Generating electricity while walking with loads[J]. Science,2005,309(5741):1725-1728.
[7] ZHANG X,GUO Q,ZHAO C,et al. Development of a lower extremity exoskeleton suit actuated by hydraulic[C]//Proceedings of IEEE International Conference on Mechatronics and Automation,August 2012:587-591.
[8] KAZEROONI H. Exoskeletons for human power augmentation[C]//Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems,August 2005:3459-3464.
[9] 陈伟海,徐颖俊,王建华,等. 并联式下肢康复外骨骼运动学及工作空间分析[J]. 机械工程学报,2015,51(13):158-166. CHEN Weihai,XU Yingjun,WANG Jianhua,et al. Kinematics and workspace analysis of parallel lower limb rehabilitation exoskeleton[J]. Journal of Mechanical Engineering,2015,51(13):158-166.
[10] 史小华,王洪波,孙利,等. 外骨骼型下肢康复机器人结构设计与动力学分析[J]. 机械工程学报,2014,50(3):41-48. SHI Xiaohua,WANG Hongbo,SUN li,et al. Design and dynamic analysis of an exoskeletal lower limbs rehabilitation robot[J]. Journal of Mechanical Engineering,2014,50(3):41-48.
[11] 钱竞光,宋雅伟,叶强,等. 步行动作的生物力学原理及其步态分析[J]. 南京体育学院学报,2006,5(4):1-6. QIAN Jiguang,SONG Yawei,YE Qiang,et al. The biomechanical principle and gait analysis of walking action[J]. Journal of Nanjing Institute of Physical Education,2006,5(4):1-6.
[12] 邵明旭,王斐,殷腾龙,等. 人体下肢生物力学建模研究进展[J]. 智能系统学报,2015,10(4):518-527. SHAO Mingxu,WANG Fei,YIN Tenglong,et al. Progress in modeling of human lower limb biomechanics[J]. Journal of Intelligent Systems,2015,10(4):518-527.
[13] 姜海波. 人体下肢三摆多自由度模型[J].北京生物医学工程,2013,32(3):272-275. JIANG Haibo. Multi-degree-of-freedom model of the lower limb of the human body[J]. Beijing Biomedical Engineering,2013,32(3):272-275.
[14] 刘静民,仰红慧. 人体转动惯量的研究综述[J]. 体育科学,2001,21(4):81-86. LIU Jingmin,YANG Honghui. Studies on the research of human moment of inertia[J]. Sports Science,2001,21(4):81-86.
[15] 韩亚丽,王兴松. 人体行走下肢生物力学研究[J]. 中国科学:技术科学,2011,41(5):592-601. HAN Yali,WANG Xingsong. Study on biomechanics of lower limbs of human body[J]. Science in China:Technological Sciences,2011,41(5):592-601.
[16] 姚静,李彬,孔祥东. 基于两级压力源的液压机快锻节能控制研究[J]. 机械工程学报,2016,52(10):199-206. YAO Jing,LI Bin,KONG Xiangdong. Energy saving and control of hydraulic press fast forging system based on the two-stage pressure source[J] Journal of Mechanical Engineering,2016,52(10):199-206.