摘要
本研究针对纯电动汽车因路面不平顺引起的振动能量损失问题,设计了一种压电式悬臂梁振动能量俘能器。通过建立弱非线性振动方程数学模型,采用多尺度法和龙格库塔法求解系统近似解并推导幅频响应方程。比较两种方法的结果一致性,分析非线性参数对系统响应的影响,探讨幅频曲线的跳跃性和多值性。研究结果表明,所设计的俘能器能拓宽俘获频率范围,提高俘获振动能量效率,为提高纯电动汽车能量利用效率提供了新的思路。
This study addresses the issue of vibrational energy loss in pure electric vehicles caused by road surface irregularities by designing a piezoelectric cantilever beam vibration energy harvester.A mathematical model based on weakly nonlinear vibration equations is established,and the approximate solutions of the system are obtained using the method of multiple scales and the Runge-Kutta method.The amplitude-frequency response equations are derived,and the consistency between the two methods is compared.The influence of nonlinear parameters on the system response is analyzed,with a focus on the jump phenomena and multi-value characteristics of the amplitude-frequency curves.The results demonstrate that the proposed harvester effectively captures vibrational energy,offering new insights for improving the energy utilization efficiency of pure electric vehicles.
作者
李銮
陈坤
Li Luan;Chen Kun(Fujian Chuanzheng Communications College,Fujian Fuzhou 350007;Quanzhou Highway Development and Management Center,Fujian Quanzhou 362000)
出处
《内燃机与配件》
2025年第15期48-50,共3页
Internal Combustion Engine & Parts
基金
2022年度福建省中青年教师教育科研项目(JAT220555)
福建船政交通职业学院大学生科研资助项目(20240759)。
关键词
纯电动汽车
压电效应
悬臂梁
振动能量俘能
Pure electric vehicles
Piezoelectric effect
Cantilever beam
Vibration energy harvesting
