Shear force reconstruction in a vertically oriented probe microscope using a super-twisting observer
Shear force reconstruction in a vertically oriented probe microscope using a super-twisting observer
复制标题
使用超扭转观察器在垂直定向探针显微镜中重建剪切力
DOI：
10.1109/cdc.2013.6760545
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. Miles
中科院分区：
文献类型：
--
作者：
Thang Nguyen;S. G. Khan;C. Edwards;G. Herrmann;R. Harniman;S. Burgess;M. Antognozzi;M. Miles
本文提出了一种利用超扭转滑模观测器重建垂直定向悬臂梁(VOC)尖端未知剪力的方案，VOC是布里斯托尔大学垂直定向探针显微镜(VOPM)的关键部件。VOPM的独特之处在于，可以使用悬臂水平激励的已知幅度来测量VOC尖端到试件的距离。这一幅度直接受到VOC与生物样品上方流体层相互作用的影响。流体相互作用产生的剪切力随着尖端与试件的接近而增大。因此，了解剪切力是衡量VOC尖端与试件接近程度的另一个重要指标。仿真实例验证了其最终实时应用的可行性。
In this paper, a scheme employing a super-twisting sliding mode observer is proposed to reconstruct the unknown shear forces at the tip of the vertically oriented cantilever (VOC) which is the key component of Bristol University's Vertically Oriented Probe Microscope (VOPM). The VOPM is unique in the sense that the distance of the VOC tip from the specimen can be measured using the known amplitude of the horizontal excitation of the cantilever. This amplitude is directly influenced by the interaction of the VOC with the fluid layer above the biological specimen. The shear forces caused by the fluid interaction increase with the proximity of the tip to the specimen. Thus, knowledge of the shear forces is another important measure of the closeness of the VOC tip to the specimen. Simulation examples show the feasibility of its eventual real-time application.
影响因子：
6.8
作者：
Tan, Chee Pin;Edwards, Christopher
通讯作者：
Edwards, Christopher