SBIR Phase I: Materials for Structural Vibration Avoidance

SBIR 第一阶段：结构避振材料

• 批准号: 9761032
• 负责人: Leonard Haynes
• 金额: $ 10万
• 依托单位: Intelligent Automation, Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-01-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9761032&HistoricalAwards=false
• 关键词: SBIR; Phase; Materials; Structural; Vibration

*** 9761032 Haynes This Small Business Innovation Research Phase I project will detail a method to fabricate structurally strong materials where the stiffness of the material can be varied electrically. If this innovative new type of material is used to build structures, then changing the stiffness of the material changes the vibrational characteristics of the structures. By continually changing the stiffness of key structural components, vibrations will never be able to build up at any resonance frequency because the resonance frequencies will continually change. Current active damping systems use actuators and advanced control theory to actively interfere with vibrations. A fundamental problem with these systems is that they can add energy to the system, and can go unstable. They are based on some level of prediction of the noise characteristics and/or a model of the structure being controlled, and can increase instead of decrease vibrations when the predictions or models do not correctly represent the current situation. In this approach, the fundamental advantage is that energy cannot be added to the system, and thus it cannot go unstable. In addition there are practical advantages of requiring no actuators and requiring far less power than conventional systems. A technology to minimize vibrations would have commercial value in aircraft, cars, space structures, and high precision manufacturing equipment such as machine tools or lithography machines. An investor has been identified who is interested in funding an application of this technology, if the research is successful, to scanning probe microscopes where vibration precludes using these manometer resolution instruments on the factory floor for in-process control. ***

*9761032海恩斯这个小型企业创新研究第一阶段项目将详细介绍一种制造结构坚固材料的方法，其中材料的硬度可以通过电子方式变化。如果这种创新的新型材料被用来建造结构，那么改变材料的刚度就会改变结构的振动特性。通过不断改变关键结构部件的刚度，振动将永远不能在任何共振频率下建立，因为共振频率将不断变化。目前的主动减振系统使用致动器和先进的控制理论来主动干扰振动。这些系统的一个根本问题是它们会给系统增加能量，而且可能会变得不稳定。它们基于对噪声特性和/或被控制结构的模型的某种程度的预测，并且当预测或模型不能正确地表示当前情况时，可以增加而不是减少振动。在这种方法中，根本的优点是能量不能被添加到系统中，因此它不会变得不稳定。此外，与传统系统相比，它具有不需要执行器和需要的功率少得多的实际优势。将振动降至最低的技术将在飞机、汽车、空间结构和高精度制造设备(如机床或光刻机)中具有商业价值。已经确定了一位投资者，如果研究成功，有兴趣为这项技术的应用提供资金，用于扫描探头显微镜，因为振动排除了在工厂车间使用这些压力计分辨率仪器进行过程控制的可能性。***