检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Wang, Yushun Yin, Hao Li, Mingxing Chen, Yuanchang Sun, Haoyu Liu, Jiang Key Lab of Industrial Fluid Energy Conservation and Pollution Control Qingdao University of Technology Qingdao266520 China Structural Dynamics and Acoustic Systems Laboratory University of Massachusetts Lowell One University Avenue LowellMA01854 United States Nanjing University of Aeronautics and Astronautics Nanjing211100 China State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130022 China

Aiming at the micro power supply for vehicle suspension control, we propose a new harvester to recycle the vortex vibration energy behind the shock absorber. Different from the traditional regenerative suspensions utilizing the vertical motion, we recycle the vortex vibration energy laterally. A suspension dynamics model was built and simulated the spring compression process to discuss the break wind condition. A stable Karman vortex street would be developed after the spring is compressed to a certain height, proving that the car spring’s wind break effect could be neglect in many driving conditions. Then the spring and shock absorber was simplified to a cylinder with two cross sections. The fluid analysis was performed and the vortex form showed three features. A bidirectional fluid-structure coupling model was built for the new harvester and the simulation verified that the electric voltage positively correlated with the vehicle’s velocity. At last, a full size sample prototype test was performed for validation. The designed harvester may provide enough electricity for a suspension control unit or sensors, as a potential solution for the near field energy supply. When the car is driving with a common speed in cities, the recycled electric voltage could reach to 0.8V. © 2023, The Authors. All rights reserved.

关键词： Vortex flow

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