A 2-DOF vibration energy capture device for magnetic levitation rail vehicle

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (21) : 156-162.

KONG Lingqiang, YUAN Tianchen, YANG Jian, YANG Li

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Abstract

Here, a 2-DOF vibration energy capture devicefor magnetic levitation rail vehicle was proposed.This energy capture device was installed at the rail vehicle’s bogie, and its vibration energy collection efficiency was significantly improved compared with that of a single-DOF one.The dynamic model of the 2-DOF vibration energy capture device were established theoretically, and its dynamic characteristics were analyzed.Runge-Kutta method was used to calculate and obtain its dynamic characteristics and output power under simple harmonic vibration excitation and vertical vibration excitation of the rail vehicle.The calculated results were compared with those of the single-DOF energy capture device.Results showed that the 2-DOF energy capture system has two resonance peaks to widen its working frequency band range; changing its size parameters can lift its energy capture efficiency aiming at target frequency; the output power of the 2-DOF energy capture system is 1.5 times of that of the single-DOF one under simple harmonic vibration excitation and vertical vibration excitation of the rail vehicle to effectively capture vibration energy of the rail vehicle.

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rail vehicle / magnetic levitation / vibration energy / energy capture

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KONG Lingqiang, YUAN Tianchen, YANG Jian, YANG Li. A 2-DOF vibration energy capture device for magnetic levitation rail vehicle[J]. Journal of Vibration and Shock, 2020, 39(21): 156-162

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