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Design on electromagnetic energy regenerative dynamic vibration absorber for vehicles |
Heng-jia ZHU1,2( ),Si-yuan TIAN1,2,Shuang-bao LI3,Wei ZHANG1,2,*( ) |
1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China 2. Aviation Special Ground Equipment Research Base, CAAC, Tianjin 300300, China 3. Research Institute of Science and Technology, Civil Aviation University of China, Tianjin 300300, China |
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Abstract A quarter vehicle dynamic model with electromagnetic energy regenerative dynamic vibration absorber (EMER-DVA) on the sprung mass was established, considering the coil mass, inductance, resistance, and coupling effects between the mechanical vibrating system and the electromagnetic energy recovery device. The parameter matching design for EMER-DVA was obtained based on the dynamic vibration absorber (DVA) principle and dynamical stiffness characteristics of the electromagnetic energy regenerative system. The amplitude-frequency behaviors in terms of body acceleration, suspension deflection and output power of the vehicles with DVA, EMER-DVA and non-DVA were compared in frequency domain. The time-domain vibration and energy recovery performances of the vehicles with EMER-DVA and non-DVA were analyzed under sinusoidal and random road displacement excitation conditions. Results show that, by comparing with the vehicle with non-DVA, EMER-DVA could reduce the vehicle body vibration acceleration and suspension dynamic deflection by 17.8% and 8.7%, respectively, at the natural frequency of the sprung mass. And the mean values of the above responses were decreased by 3.2% and 2.7% at different velocities, respectively, under the C-class random road condition. In addition, the mean values of output power and EMER-DVA deflection were 0.98 W and 11.8 mm, respectively. These values were 4.5%, 3.1%, 2.8 W and 21.3 mm, respectively, under the D-class random road condition. It indicates that the EMER-DVA may effectively recover the vibration energy while improving the vehicle ride comfort. Bench test of the EMER-DVA was conducted, and the corresponding experimental results agreed well with that of the numerical method, which validated the proposed dynamical model of the EMER-DVA.
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Received: 26 September 2022
Published: 31 August 2023
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Fund: 国家自然科学基金青年科学基金资助项目(12002367);国家自然科学基金民航联合研究基金重点支持项目(U2033208);国家自然科学基金资助项目(12172376) |
Corresponding Authors:
Wei ZHANG
E-mail: hjzhu@cauc.edu.cn;weizhang@cauc.edu.cn
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车辆电磁馈能式动力吸振器设计
考虑线圈质量、电感、电阻以及机械振动系统与电磁式能量回收装置之间耦合作用,建立装有簧上电磁馈能式动力吸振器(EMER-DVA)的四分之一车辆动力学模型. 基于动力吸振原理及电磁馈能系统动刚度特性获得EMER-DVA参数匹配设计. 对比分析传统式动力吸振器(DVA)、EMER-DVA和无DVA车辆的车身振动加速度、悬架动挠度及输出功率的幅频特性,以及在正弦位移、随机位移激励工况下EMER-DVA和无DVA车辆的时域振动特性和振动能量回收性能. 结果表明,EMER-DVA使车身振动加速度、悬架动挠度振动传递率在悬架固有频率处分别降低17.8%和8.7%. 在C级随机不平路面、不同车速下,车身振动加速度、悬架动挠度均值降低3.2%、2.7%,输出功率、EMER-DVA挠度均值分别为0.98 W、11.8 mm;在D级随机不平路面下,相应参数分别为4.5%、3.1%、2.8 W、21.3 mm. 可以看出,EMER-DVA在提高车辆行驶平顺性的同时可以有效回收振动能量.开展EMER-DVA台架振动试验,试验结果与数值计算结果较吻合,验证了本研究EMER-DVA动力学模型的准确性.
关键词:
动力吸振器,
振动能量回收,
多场耦合,
车辆动力学,
平顺性
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