Piezoelectric Sensor/Actuator Rosettes For Noise And Vibration Control

新的概念将被开发用于感测和控制结构中的噪声和振动。在平面上感测各个应变分量需要三个独立的测量，通常使用应变花。 将应变玫瑰花的概念扩展到可用于定向感测和定向致动的压电材料。 这将通过设计的各向异性来实现，在设计的各向异性中，传感器/致动器元件的物理结构、晶体取向和域结构的组合被同时设计以获得与主体结构的期望耦合。 研究将涉及反馈和控制，最佳传感器/致动器的位置和空间分布，以及基于负电容放大器的反馈技术的探索。 将为这些传感器/执行器组件开发新的设计和分析工具。 学生参与将包括本科生（UG）研究助手，MS学生和博士生。 国际部分将带来多元文化的互动和经验。 研究结果将通过课堂和UG教学实验室进行。 研究结果将通过期刊出版物、会议报告以及与其他研究小组的合作广泛传播。

New concepts will be developed for sensing and control of noise and vibration in structures. Sensing of individual strain components in a plane requires three independent measurements, typically using a strain Rosette. The concept of the strain Rosette to piezoelectric materials that can be used for both directional sensing and directional actuation will be extended. This will be accomplished through designed anisotropy, an approach in which a combination of the physical structure, the crystallographic orientation, and the domain structure of the sensor/actuator element are concurrently designed to obtain desired couplings to the host structure. Research will involve feedback and control, optimal sensor/actuator location and spatial distribution, as well as exploration of feedback techniques based on negative capacitance amplifiers. New design and analysis tools will be developed for these sensor/actuator components. Student involvement will include undergraduate (UG) research helpers, MS students, and PhD students. An international component will bring in multicultural interactions and experience. Research results will be carried through to the classroom and UG instructional laboratories. Results will be broadly disseminated through journal publications, conference presentations, and collaborations with other research groups.