王化明,陈峰洪,李鹭扬,汪洋,朱银龙.介电型电活性聚合物传感单元设计[J].农业机械学报,2017,48(3):383-389.
WANG Huaming,CHEN Fenghong,LI Luyang,WANG Yang,ZHU Yinlong.Design of Dielectric Electroactive Polymer Sensing Cell[J].Transactions of the Chinese Society for Agricultural Machinery,2017,48(3):383-389.
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介电型电活性聚合物传感单元设计   [下载全文]
Design of Dielectric Electroactive Polymer Sensing Cell   [Download Pdf][in English]
投稿时间:2016-07-10  
DOI:10.6041/j.issn.1000-1298.2017.03.049
中文关键词:  介电型电活性聚合物  传感单元  差动测量  关节转角测量
基金项目:国家自然科学基金项目 (51305209)、江苏省自然科学基金项目 (BK20130979)、江苏省“六大人才高峰”项目 (2014-ZBZZ-004)、南京航空航天大学研究生创新基地(实验室)开放基金项目(kfjj20150516)和江苏省科技型企业技术创新项目(BC2015180)
作者单位
王化明 南京航空航天大学 
陈峰洪 南京航空航天大学 
李鹭扬 扬州大学 
汪洋 南京航空航天大学 
朱银龙 南京林业大学 
中文摘要:基于介电型电活性聚合物(DEAP)变形时的电容变化原理,设计并实现一种传感单元,其内框可在平面内移动,用于检测平面位移。建立该传感单元的几何模型,得出其电容变化和内框位移的关系。采用差动测量法测量敏感单元电容变化,建立了面对面敏感单元的电容差值和内框平移量的关系。利用该传感单元设计了一个二自由度角度传感器用来测量关节转角,同样采用差动测量法建立了电容差值和转角的关系。实验测得其沿X轴和Y轴平移灵敏度为-57.2pF/mm和-58.0pF/mm,绕X轴和Y轴旋转灵敏度为-139.4pF/(°)和141.6pF/(°)。测试结果与分析结果较为吻合,验证了DEAP应用于位移传感器和角度传感器的可行性。
WANG Huaming  CHEN Fenghong  LI Luyang  WANG Yang  ZHU Yinlong
Nanjing University of Aeronautics and Astronautics,Nanjing University of Aeronautics and Astronautics,Yangzhou University,Nanjing University of Aeronautics and Astronautics and Nanjing Forestry University
Key Words:dielectric electroactive polymer (DEAP)  sensing cell  differential measurement  joint angle measurement
Abstract:As a new smart material, dielectric electroactive polymers (DEAP) have shown great promise in the fields of sensing and actuation owning to their excellent overall performance, including large deformation, high efficiency and energy density. Based on the capacitance change principle of the polymer when deformed, a sensing cell composed of an outer frame, an inner frame and a sheet of DEAP film that was divided into four partitions coated with flexible electrode was designed and implemented. When the DEAP film was stretched or shrunk by the mobile inner frame, the flexible electrodes on both sides of the film come closer together or away each other, respectively, leading to changes in capacitance. A geometrical model of the proposed sensing cell was developed and the relationship between the capacitance of the sensing cell and the displacement of the inner frame was deduced. A differential approach was used to measure the variation of the capacitance of the parts face to face, and the capacitance difference of two opposite parts in function of the inner frame in plane displacement was developed. Moreover, 2-DOF angular sensor by the sensing cell was designed and applied to angle measurement, and similarly, a differential approach was used to obtain the curve of the capacitance difference with the joint’s rotational angle. The experimental sensitivities of X-translation, Y-translation, X-rotation and Y-rotation were respectively -57.2pF/mm, -58.0pF/mm, -139.4pF/(°) and 141.6pF/(°), which were agreed well with the theoretical results. The research result verifies the feasibility of the application of DEAP in displacement sensor and angle sensor.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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