Active Noise Control Systems for Windows Using Transparent Carbon Nanotube Actuators

该项目探讨了带有嵌入式主动控制系统的双层玻璃窗的开发，以显著降低噪音传播。 这项工作的动机来自于这样一个事实，即在主要大都市地区靠近机场和高速公路的家庭遭受严重的噪音问题。 窗户是飞机噪音进入家庭的主要途径。 与以前在家庭和办公室中尝试的其他主动噪声控制方法相比，该项目旨在首先减少进入家庭的噪声，而不是在噪声已经进入家庭后主动尝试消除房间中的噪声。具体而言，该项目将：a）开发透明的基于碳纳米管的薄膜扬声器，B）开发用于Windows应用的自适应噪声控制系统，c）开发信号处理算法以获得用于控制器的时间提前的参考信号并隔离室内音频干扰，d）以实验方式评估一个原型窗户的性能。在该项目中开发的主动噪音消除器在窗户之外也有重要的应用。 其中包括用于机械的噪音消除面板、新生儿重症监护室中早产儿的透明保育箱以及飞机机舱降噪应用。该项目的教育目标包括为高地公园高中的学生纳入以噪音和振动为重点的课堂项目。 该项目还将通过专门的夏季REU计划招募少数民族和女性本科生，为他们提供从事尖端研究的机会，并激励他们攻读研究生课程。

This project explores the development of double-glazed windows with embedded active control systems to achieve significant reduction in noise transmission. The motivation for this work comes from the fact that homes close to airports and highways in major metropolitan areas suffer from serious noise problems. Windows constitute the primary path through which aircraft noise enters a home. In contrast to other active noise control approaches previously attempted in homes and offices, this project aims to reduce the noise that enters the home in the first place rather than actively trying to cancel noise in a room after the noise has already entered the home. Specifically, the project will: a) develop carbon nanotube based thin film speakers that are transparent, b) develop an adaptive noise control system for the windows application, c) develop signal processing algorithms to obtain a time-advanced reference signal for the controller and to isolate room audio interferences, d) experimentally evaluate the performance of a prototype window.The active noise cancellation developed in the project also has significant applications beyond windows. These include noise cancellation panels for machinery, transparent incubators for pre-term babies in neonatal intensive care units and aircraft cabin noise reduction applications. The educational objectives of the project include incorporation of class projects focused on noise and vibrations for school students from the Highland Park High School. The project will also recruit minority and women undergraduate students through a specialized summer REU program, providing them an opportunity to work on cutting edge research and motivating them to pursue graduate studies.