Integrated Approaches to Vibration Control Utilizing Eigenstructure Assignment

利用特征结构分配进行振动控制的综合方法

• 批准号: 9700277
• 负责人: William Clark
• 金额: $ 20万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-15 至 2000-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9700277&HistoricalAwards=false
• 关键词: Integrated; Approaches; Vibration; Control; Utilizing

This research project investigates novel vibration control techniques based on the concept of shaping structural eigenvectors to achieve desirable vibration or acoustic response. There are two primary motivating factors of this project one is that passive and semi-active methods do not suffer from the high energy requirements and lower stability margins of active methods, and the other is that eigenvectors which are shaped in a desirable manner provide improved response for response for a wide range of excitations. The field of vibration control has a great deal of attention during the last 15 years and much of it has been directed toward active vibration control. Most research, however, has focused on, (a) active methods which try to alternate the vibration (by damping or cancellation) without regard for power required, (b)passive methods which attempt to maximize a structure's damping, or (c) an intelligent combination of the two. This research shows that eigenstructure assignment methods, which do not focus on either of those approaches, can be very effective in vibration control under a wide range of conditions, and that eigenstructure assignment can work in concert with conventional vibration control methods for better performance with reduced power costs.

本研究计画探讨以塑造结构特徴向量概念为基础之新颖振动控制技术，以达到所需之振动或声学反应。有两个主要的激励因素，这个项目之一是被动和半主动方法不遭受高能量的要求和较低的稳定性裕度的主动方法，另一个是本征向量，这是在一个理想的方式形成提供了改进的响应响应范围广泛的激励。在过去的15年里，振动控制领域受到了极大的关注，其中大部分都是针对主动振动控制。然而，大多数研究都集中在：（a）主动方法，它试图改变振动（通过阻尼或抵消）而不考虑所需的功率;（B）被动方法，它试图使结构的阻尼最大化;或（c）两者的智能组合。这项研究表明，特征结构配置方法，不集中在这些方法中的任何一个，可以是非常有效的振动控制在很宽的范围内的条件下，和特征结构配置可以协同工作，与传统的振动控制方法，以更好的性能，降低功耗成本。