摘要
针对当前车辆悬架系统能量回收装置存在能量密度小,振动能量消耗大和能量回收效率低等问题设计了一种新型压电式能量回收装置。通过建立压电式能量回收装置的压电发电模型和转子动力学模型,将其加入到传统二自由度车辆模型中,并引入惯性质量和能量转化部件作用力,最终完成双质量二自由度的悬架动力学模型的建立。同时讨论了车辆速度、压电回收装置尺寸、道路等级等因素对发电功率的影响。结果表明,所设计的能量回收装置最高可以实现332.4W的功率回收。
A new type of piezoelectric harvester was designed to solve the problems of low energy density,vibration energy dissipation and energy harvesting efficiency reduction in the current vehicle suspension system. By establishing piezoelectric power generation model and rotor dynamics model of piezoelectric harvesting,adding them to the traditional two-degree-of-freedom vehicle model and introducing inertia mass and energy conversion acting force,the double-mass two-degree-of-freedom suspension dynamics model was finally established. At the same time,the influence of the speed of vehicle,the size of the piezoelectric harvester and the class of the road on the RMS of the generated electric power were discussed. The results show that a power up to 332.4 W can be realized for a practical design of the harvester.
作者
王戎
王铁
赵震
李蒙
WANG Rong;WANG Tie;ZHAO Zhen;LI Meng(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Shanxi Taiyuan 030024,China)
出处
《机械设计与制造》
北大核心
2021年第12期33-37,共5页
Machinery Design & Manufacture
基金
山西省科技重大专项—中型载货车平台燃料电池动力系统与整车集成技术(20181102006)。
