Sweep-type triboelectric linear motion sensor with staggered electrode
Sweep-type triboelectric linear motion sensor with staggered electrode
复制标题
具有交错电极的扫描式摩擦电动直线运动传感器
DOI：
10.1016/j.eml.2020.100713
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发表时间：
2020-05-01
影响因子：
4.7
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
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作者：
Xie, Zhijie;Dong, Jiewei;Wang, Zhong Lin
为应用于现代工业自动化，设计了一种扫描式摩擦电线性运动传感器（ST-TLMS），可以监测滑动物体的位置、位移、速度和方向。ST-TLMS由一个滑块、一个定子和一个丙烯酸槽盒组成。它们的配置允许柔性共聚物薄膜固定在滑块上并随其移动，定子上涂有均匀排列的三对铜电极阵列。相邻电极对的相位错开三分之一。定子与薄膜的来回扫动在铜电极上产生三个周期摩擦电信号。实验结果表明，在不同滑动速度下，经过电压放大和信号处理后的输出幅值基本保持不变，具有良好的稳定性。更重要的是，信号的主导频率与滑动速度一致。通过实时降噪和对三个输出信号进行信号变换，有效地提高了运动感知的分辨率和精度。此外，在连续工作32 h后，传感器的输出信号没有衰减，满足实际应用中对耐用性的要求。(C) 2020由Elsevier Ltd.出版。
For use in modern industrial automation, a sweep-type triboelectric linear motion sensor (ST-TLMS) is demonstrated that can monitor the position, displacement, velocity and direction of sliding objects. The ST-TLMS consists of a slider, a stator, and an acrylic groove box for housing them. They are configured allowing a flexible copolymer film to be fixed on the slider and moves with it and the stator to be coated with three pairs of copper electrode arrays arranged uniformly. The phases of adjacent pairs of electrodes are staggered by one third. Three periodic friction electrical signals are generated on the copper electrode by the back and forth sweeping of the stator and film. The experimental results show that the output amplitude after voltage amplification and signal processing remains basically unchanged at different sliding velocities, showing good stability. More importantly, the dominant frequency of the signal is consistent with the sliding velocity. Through real-time noise reduction and the signal transformation of the three output signals, the resolution and accuracy of the motion perception are effectively improved. Additionally, after 32 h of continuous operation, the output signal of the sensor had not decayed, which meets the requirements of durability in practical applications. (C) 2020 Published by Elsevier Ltd.