一种非线性双稳态人体运动能量俘获技术

王伟; 曹军义; 林京; 周生喜; 蔡云龙

doi:10.7652/xjtuxb201508010

您当前的位置：

首页 >

文章列表页 >

一种非线性双稳态人体运动能量俘获技术

更新时间：2025-07-09

- 一种非线性双稳态人体运动能量俘获技术
- Nonlinear Bi-Stable Energy Harvester from Human Motion
- 西安交通大学学报 2015年49卷第8期页码：48-63
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2015-03-31。作者简介: 王伟(1990—),男,硕士生;曹军义(通信作者),男,副教授。基金项目: 国家自然科学基金资助项目(51421004);新世纪优秀人才支持计划资助项目(NCET-12-0453)
- DOI：10.7652/xjtuxb201508010
  中图分类号： TH39
- 网络首发：2015-08-10，
  
  纸质出版：2015
- 稿件说明：
移动端阅览
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):48-63.

Nonlinear Bi-Stable Energy Harvester from Human Motion[J]. 2015, 49(8): 48-63.
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):48-63. DOI： 10.7652/xjtuxb201508010.

Nonlinear Bi-Stable Energy Harvester from Human Motion[J]. 2015, 49(8): 48-63. DOI： 10.7652/xjtuxb201508010.

摘要

针对传统线性压电悬臂梁频带过窄且难以与人体运动相匹配的问题

考虑人体小腿的运动特点

设计了一种双稳态磁耦合压电悬臂梁应用于人体运动能量俘获

利用运动过程中小腿的摆动及其与地面间的冲击产生的加速度使悬臂梁跨越势阱提高俘能效率。以哈密顿原理及人体运动信号为基础

建立了用于人体运动能量俘获的非线性动力学模型。根据人体腿部运动的振动特征设计了一种便携式非线性振动能量俘获系统

实现了线性、非线性单稳态和双稳态等动力学特征。采用实际腿部振动信号进行的理论模型数值仿真表明:双稳态人体振动俘能技术能够产生大幅度跨越势阱运动并俘获较多的电能。人体不同运动状态的实验结果验证了非线性双稳态人体能量俘获技术的优势以及所建立的机电耦合模型的有效性。当运动速度为8 km/h时

双稳态系统的平均功率达到最大值23.2 μW。

Abstract

A nonlinear bi-stable energy harvester from the human motion is proposed to solve the problem that the frequency bandwidth of traditional linear piezoelectric energy harvesters is narrow and it is hard to match with human motions. The harvester considers the characteristics of the human leg's motion and improves the energy harvesting efficiency by using the acceleration caused by leg swings and their impacts on the ground. An electromechanical model of nonlinear energy harvesters is derived based on the Hamilton principle and human motion signals. A portable nonlinear energy harvesting device is designed based on the characteristics of the human motion

and dynamic characteristics of linear

nonlinear mono-stable and bi-stable oscillators are realized by adjusting the position of magnets. Numerical simulations based on real human leg's vibration data show that the proposed harvester achieves the large amplitude inter-well oscillation and generates more energy from the human motion. Experimental results under various motion speeds verify the great advantage of the nonlinear bi-stable energy capture technology

and the efficiency of the proposed electromechanical model. The average output power of the bi-stable system reaches a maximum value of 23.2 μW when the motion speed is 8 km/h.

关键词

Keywords

references

ROME L C, FLYNN L, GOLDMAN E M, et al. Generating electricity while walking with loads [J]. Science, 2005, 309(5741): 1725-1728.

SAHA C R, O'DONNELL T, WANG N, et al. Electromagnetic generator for harvesting energy from human motion [J]. Sensors and Actuators: A Physical, 2008, 147(1): 248-253.

KIM M K, KIM M S, LEE S, et al. Wearable thermoelectric generator for harvesting human body heat energy [J]. Smart Materials and Structures, 2014, 23(10): 105002.

LEFEUVRE E, BADEL A, RICHAARD C, et al. Energy harvesting using piezoelectric materials: case of random vibrations [J]. Journal of Electroceramics, 2007, 19(4): 349-355.

ZHAO Jingjing, YOU Zheng. A shoe-embedded piezoelectric energy harvester for wearable sensors [J]. Sensors, 2014, 14(7): 12497-12510.

MCINNES C R, GORMAN D G, CARTMELL M P. Enhanced vibrational energy harvesting using nonlinear stochastic resonance [J]. Journal of Sound and Vibration, 2008, 318(4/5): 655-662.

ERTURK A, HOFFMANN J, INMAN D J. A piezomagnetoelastic structure for broadband vibration energy harvesting [J]. Applied Physics Letters, 2009, 94(25): 2-3.

ERTURK A, INMAN D J. Broadband piezoelectric power generation on high-energy orbits of the bistable Duffing oscillator with electromechanical coupling [J]. Journal of Sound and Vibration, 2011, 330(10): 2339-2353.

孙舒, 曹树谦. 双稳态压电悬臂梁发电系统的动力学建模及分析 [J]. 物理学报, 2012, 61(21): 95-106.

SUN Shu, CAO Shuqian. Dynamic modeling and analysis of a bistable piezoelectric cantilever power generation system [J]. Acta Physica Sinica, 2012, 61(21): 95-106.

陈仲生, 杨拥民. 悬臂梁压电振子宽带低频振动能量俘获的随机共振机理研究 [J]. 物理学报, 2011, 60(7): 437-443.

CHEN Zhongsheng, YANG Yongmin. Stochastic resonance mechanism for wideband and low frequency vibration energy harvesting based on piezoelectric cantilever beams [J]. Acta Physica Sinica, 2011, 60(7): 437-443.

ZHOU Shengxi, CAO Junyi, LIN Jing, et al. Exploitation of a tristable nonlinear oscillator for improving broadband vibration energy harvesting [J]. The European Physical Journal Applied Physics, 2014, 67(3): 30902.

ZHOU Shengxi, CAO Junyi, INMAN D J, et al. Broadband tristable energy harvester: modeling and experiment verification [J]. Applied Energy, 2014, 133: 33-39.

周生喜, 曹军义, ERTURK A, 等. 压电磁耦合振动能量俘获系统的非线性模型研究 [J]. 西安交通大学学报, 2014, 48(1): 106-111.

ZHOU Shengxi, CAO Junyi, ERTURK A, et al. Nonlinear model for piezoelectric energy harvester with magnetic coupling [J]. Journal of Xi'an Jiaotong University, 2014, 48(1): 106-111.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

航空三级式发电系统非线性建模与硬件在环实现

用小波熵及非稳定周期轨道测量神经放电峰峰间期复杂性

高稳快速非线性-线性跟踪微分器设计

利用异结构同步对铁磁混沌电路的非线性反馈控制

用于机械系统固有频率及阻尼比计算的改进频域方法