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用于无人车辆悬架系统的旋转磁流变阻尼器的设计与性能评估

Design and performance evaluation of a rotary magnetorheological damper for unmanned vehicle suspension systems.

作者信息

Lee Jae-Hoon, Han Changwan, Ahn Dongsu, Lee Jin Kyoo, Park Sang-Hu, Park Seonghun

机构信息

School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, Busan 609-732, Republic of Korea.

出版信息

ScientificWorldJournal. 2013;2013:894016. doi: 10.1155/2013/894016. Epub 2013 Mar 6.

DOI:10.1155/2013/894016
PMID:23533366
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3606766/
Abstract

We designed and validated a rotary magnetorheological (MR) damper with a specified damping torque capacity, an unsaturated magnetic flux density (MFD), and a high magnetic field intensity (MFI) for unmanned vehicle suspension systems. In this study, for the rotary type MR damper to have these satisfactory performances, the roles of the sealing location and the cover case curvature of the MR damper were investigated by using the detailed 3D finite element model to reflect asymmetrical shapes and sealing components. The current study also optimized the damper cover case curvature based on the MFD, the MFI, and the weight of the MR damper components. The damping torques, which were computed using the characteristic equation of the MR fluid and the MFI of the MR damper, were 239.2, 436.95, and 576.78 N·m at currents of 0.5, 1, and 1.5 A, respectively, at a disk rotating speed of 10 RPM. These predicted damping torques satisfied the specified damping torque of 475 N·m at 1.5 A and showed errors of less than 5% when compared to experimental measurements from the MR damper manufactured by the proposed design. The current study could play an important role in improving the performance of rotary type MR dampers.

摘要

我们设计并验证了一种用于无人车辆悬架系统的旋转磁流变（MR）阻尼器，该阻尼器具有特定的阻尼扭矩容量、不饱和磁通密度（MFD）和高磁场强度（MFI）。在本研究中，为使旋转式MR阻尼器具备这些令人满意的性能，通过使用详细的三维有限元模型来反映不对称形状和密封部件，研究了MR阻尼器的密封位置和盖壳曲率的作用。当前研究还基于MFD、MFI和MR阻尼器部件的重量对阻尼器盖壳曲率进行了优化。在圆盘转速为10转/分钟时，使用MR流体的特性方程和MR阻尼器的MFI计算得到的阻尼扭矩在电流为0.5、1和1.5 A时分别为239.2、436.95和576.78 N·m。这些预测的阻尼扭矩满足了1.5 A时475 N·m的指定阻尼扭矩，并且与采用所提出设计制造的MR阻尼器的实验测量结果相比，误差小于5%。当前研究在提高旋转式MR阻尼器的性能方面可发挥重要作用。

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