Integrated Approaches to Vibration Control Utilizing Eigenstructure Assignment

本研究计划探讨基于塑造结构特征向量概念的新型振动控制技术，以获得理想的振动或声学响应。这个项目有两个主要的激励因素，一个是被动和半主动方法不受主动方法的高能量需求和较低的稳定裕度的影响，另一个是以理想的方式形成的特征向量提供了对大范围激励响应的改进响应。在过去的15年中，振动控制领域受到了极大的关注，其中很多都是针对主动振动控制的。然而，大多数研究都集中在(a)主动方法（通过阻尼或消除），试图在不考虑所需功率的情况下交替振动，(b)被动方法，试图最大化结构的阻尼，或(c)两者的智能结合。本研究表明，特征结构分配方法可以在广泛的条件下有效地控制振动，并且特征结构分配方法可以与传统的振动控制方法协同工作，以降低功耗，获得更好的性能。

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.