Experiment on damping characteristics of dual-motor coupled energy-harvesting shock damper
In order to study the damping characteristics of the energy-harvesting damper under dif-ferent operating conditions,a dual-motor type energy-harvesting damper is designed.Two half-wave mechanical rectifiers are utilized to capture the bi-directional motion of the damper respective-ly.Five electromechanical coupling modes are proposed to investigate the effects of the circuit cou-pling between two motors on the damping characteristics.A bench test platform is built to analyze the damping characteristics of five kinds of electromechanical coupling modes under different excita-tion frequencies,excitation amplitudes and load resistances.The results show that among the five electromechanical coupling methods,the output force curve of the parallel-connected energy-feeding damper is more stable than that of the other three methods,and the damping characteristic is better than that of the independent external connection and series connection,which can effectively im-prove the energy utilization efficiency.
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