This study focuses on energy harvesting from vehicle suspension by employing a regenerative rotational shock absorber. Designing, manufacturing and testing of a prototype device is done step by step to provide a useful manual for researchers. The prototype damper was especially designed for low frequency applications. A rack-pinion mechanism was proposed to transform linear motion to rotational one. Unidirectional motion was realized by using a new combination of bearings and gear chain mechanism. This mechanical rectifier was coupled to light weight gear box with high reduction factor. Experimental studies were conducted in laboratory by utilizing a damper testing device. Excitation vibration motion on prototype was in constant amplitude (25 mm) and at variable low frequencies (0.16, 0.32 and 0.48 Hz). Additionally, different resistances were tested as an external load for electric generator (0.66 ∼ 10.4 Ω). Generated voltage and power in different case studies were presented. The maximum power was found to be 35 W and the maximum performance achieved was 34.36%. The range of calculated damping coefficient is in between 4800 Ns/m and 16000 Ns/m that is convenient for passenger and commercial vehicles.

中文翻译：

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低频回生旋转阻尼器的实验研究

这项研究的重点是通过采用再生旋转减震器从车辆悬架中收集能量。逐步完成原型设备的设计，制造和测试，以为研究人员提供有用的手册。原型阻尼器专为低频应用而设计。提出了一种齿条齿轮机构，将线性运动转换为旋转运动。通过使用轴承和齿轮链机构的新组合来实现单向运动。该机械整流器与减速比高的轻型齿轮箱相连。利用阻尼器测试装置在实验室进行了实验研究。样机上的激励振动运动为恒定振幅（25毫米），可变低频（0.16、0.32和0.48 Hz）。另外，测试了不同的电阻作为发电机的外部负载（0.66〜10.4Ω）。介绍了在不同案例研究中产生的电压和功率。发现最大功率为35 W，实现的最大性能为34.36％。计算的阻尼系数范围在4800 Ns / m和16000 Ns / m之间，这对乘用车和商用车很方便。