一种转动容器中磁流体液表面形貌测量方法

发布时间：2018-04-16 06:41

本文选题：磁流体 + 表面形貌　；参考：《西安交通大学学报》2017年01期

【摘要】：针对旋转容器中磁流体液表面形貌测量,提出了一种基于线型激光同步斩波调制投影的多步测量方法。采用与容器同步转动窗口斩波调制的线型激光投影方法获得了稳定的磁流体表面投影线,同时采用长时间多圈测量的平均和亮度增强效应,获得了高亮度和对比度的磁流体表面投影线;采用高透光率的亚克力盖板,实现了磁流体密封与高透光测量的双重功能,研究并给出了考虑亚克力板折射率对测量结果影响的磁流体高度测量公式;构建了磁流体形貌测试实验台,并开展了不同转速、不同磁场强度下磁流体的形貌测量验证实验,通过多组实验测量提高精确度,并与理论分析进行磁流体变化规律对比验证。通过这种实验方法可测量在旋转运动中的磁流体表面形貌,真实反映磁流体受到磁场、离心力作用下的运动状态。
[Abstract]:A multi-step measurement method based on linear laser synchronous chopper modulation projection is proposed for measuring the surface morphology of magnetofluid in rotating vessels.The linear laser projection method with synchronous rotating window chopper modulation with the vessel is used to obtain the stable surface projection line of the magnetic fluid, and the average and brightness enhancement effects of the long time multi-cycle measurement are used.The projection line of magnetic fluid surface with high brightness and contrast is obtained, and the double function of magnetic fluid seal and high transmittance measurement is realized by using acrylic cover plate with high transmittance.The measurement formula of magnetic fluid height considering the influence of the refractive index of the Yakelian force plate on the measurement results is studied and given, and the magnetic fluid topography test bench is constructed, and the magnetic fluid morphology measurement verification experiment is carried out at different rotational speeds and different magnetic field intensities.The accuracy is improved by multi-group experiments, and compared with the theoretical analysis.The surface morphology of the magnetic fluid in rotating motion can be measured by this experimental method, which truly reflects the moving state of the magnetic fluid under the action of magnetic field and centrifugal force.
【作者单位】：西安交通大学机械制造系统国家重点实验室;
【基金】：国家自然科学基金资助项目(51275379);国家自然科学基金创新研究群体资助项目(51421004)
【分类号】：TB302

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