Modeling and development of Gradient Based Smart Polymer Sensors and Actuators

基于梯度的智能聚合物传感器和执行器的建模和开发gregory Washington， PI俄亥俄州立大学提案# 010231010摘要本研究的目标是开发一种用于分布式系统空间测量的基于梯度的新型传感器。本研究的传感器和执行器是由聚偏氟乙烯（PVDF）制成的。以前的研究使用空间孔径遮阳技术（空间变化电极来实现特定的性能功能）来测量无数的分布式系统。空间孔径遮阳技术的一个主要限制是，在大多数情况下，孔径严重依赖于一维变化。在本研究中，空间梯度偏振和孔径遮阳技术被用于开发下一代传感器。在空间极化中，材料以一种允许其压电常数以受控方式变化的方式极化。具体而言，本研究的目标是：(1)建立空间梯度极化的分析基础。这部分研究的本质是开发各种结构配置的解析计算权重函数的技术。(2)发展制造空间极化传感器和执行器所需的实验硬件和设施。(3)开发生产用户自定义薄膜执行器和传感器所需的控制技术。(4)开发用于挠度验证的非接触式测量技术。研究目标是通过将微分学，力学原理和压电聚合物建模应用于给定的传感器系统来完成的。将开发用于极化薄膜的实验硬件包括一个电晕充电系统，该系统具有适当的拉伸和驱动机构，用于薄膜的正确放置和光栅化。类似于粒子跟踪应用中使用的广角立体摄影测量系统将被修改，以便在启动时精确测量分布式系统的位置。传感器市场是一个180亿美元的市场，而且还在不断增长。这些新型传感器可用于许多应用，包括汽车、生物医学传感器、航空航天结构和军事应用中的冲击传感器，如声纳传感设备等。此外，这种新技术也有可能直接应用于压电陶瓷作动器。

Modeling and Development of Gradient Based Smart Polymer Sensors and ActuatorsGregory Washington, PI Ohio State UniversityProposal # 0102310AbstractThe goal of this study is to develop a novel gradient-based sensor for spatial measurement of distributed systems. The sensors and actuators in this study are developed from polyvinylidene fluoride (PVDF). Previous studies have used spatial aperture shading techniques (spatially varying electrodes to achieve a particular performance function) to measure a myriad of distributed systems. A major limitation of the spatial aperture shading techniques was that the apertures have a heavy dependence on 1-dimensional variation for most cases. In this study spatial gradient polarization and aperture shading techniques are used to develop the next generation of sensors. In spatial polarization the material is polarized in a manner such that its piezoelectric constant is allowed to vary in controlled manner. Specifically, the objectives of this research are to: (1) Develop the analytical basis for spatial gradient polarization. Inherent in this part of the study is the development of techniques for analytically calculating weighting functions for various structural configurations. (2) Develop the experimental hardware and facilities necessary for making spatially polarized sensors and actuators. (3) Develop control techniques necessary for the production of user defined film actuators and sensors. (4) Develop a non-contact measurement technique for deflection verification. The research goals are accomplished by applying differential calculus, the principles of mechanics, and piezoelectric polymer modeling to a given sensor system. The experimental hardware that will be developed for polarizing the films consist of a corona charging system with an appropriate stretch and drive mechanism for correct placement and rastering of the film. A wide-angle stereo-photogrammetry system similar to those used in particle tracking applications will be modified to accurately measure the location of the distributed system when actuated. The sensors market is an $18 billion market and growing. These new sensors can be utilized in a host of applications including Automotive, Biomedical sensors, Aerospace Structural, and Impact sensors in Military applications, like sonar sensing equipment and so on. In addition, there is a possibility that this novel technology can be applied directly to piezoceramic actuators as well.