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Comparison of negative-muscle-work energy harvesters from the human ankle: Different designs and trade-offs

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  • Liu, Mingyi
  • Hughes-Oliver, Cherice
  • Queen, Robin
  • Zuo, Lei

Abstract

Harvesting negative work from human walking (similar to a regenerative brake in a vehicle) has the potential to maintain the same metabolic cost as during normal walking while harvesting enough energy to power electronic devices. It is challenging to harvest power from the human ankle while only having a small influence on the human body, for which the motion of the energy harvester has to be carefully synchronized to the human body according to the human body kinematics. In order to address those challenges, we designed four different versions of ankle energy harvesters, with the same function to harvest negative muscle work in the ankle joint during walking. The performance metrics are analyzed and compared between designs. Different design parameters and their contributions to energy-harvesting performance are analyzed and discussed, and the following conclusions are provided: The spring term is the best term to minimize the influence on the human body while harvesting energy; there is a trade-off between energy harvesting performance and influence on the human body, but better designs can improve the overall performance. Design iteration in this study results in a high power design and a lightweight design, harvesting energy from the negative muscle phase of human walking with high power density over 3 W/kg and high power ratio over 50% respectively.”

Suggested Citation

  • Liu, Mingyi & Hughes-Oliver, Cherice & Queen, Robin & Zuo, Lei, 2021. "Comparison of negative-muscle-work energy harvesters from the human ankle: Different designs and trade-offs," Renewable Energy, Elsevier, vol. 170(C), pages 525-538.
    • Handle: RePEc:eee:renene:v:170:y:2021:i:c:p:525-538
    DOI: 10.1016/j.renene.2021.01.151
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    Cited by:

    1. Qi, Lingfei & Song, Juhuang & Wang, Yuan & Yi, Minyi & Zhang, Zutao & Yan, Jinyue, 2024. "Mechanical motion rectification-based electromagnetic vibration energy harvesting technology: A review," Energy, Elsevier, vol. 289(C).
    2. Liu, Mingyi & Qian, Feng & Mi, Jia & Zuo, Lei, 2022. "Biomechanical energy harvesting for wearable and mobile devices: State-of-the-art and future directions," Applied Energy, Elsevier, vol. 321(C).
    3. Zuo, Jianyong & Dong, Liwei & Yang, Fan & Guo, Ziheng & Wang, Tianpeng & Zuo, Lei, 2023. "Energy harvesting solutions for railway transportation: A comprehensive review," Renewable Energy, Elsevier, vol. 202(C), pages 56-87.
    4. Lai, Zhihui & Xu, Junchen & Fang, Shitong & Qiao, Zijian & Wang, Suo & Wang, Chen & Huang, Zhangjun & Zhou, Shengxi, 2023. "Energy harvesting from a hybrid piezo-dielectric vibration energy harvester with a self-priming circuit," Energy, Elsevier, vol. 273(C).

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