Active Control for Large-Scale Dynamic Systems

名称：Andrew Alley nePI机构：伊利诺伊大学香槟分校提案编号：CMS-9900116提案标题：大型动态系统的主动控制项目摘要：本研究项目的目标是开发一种从根本上合理的方法来对大型动态系统的振动进行主动控制。其动机是将大型动态结构与外部干扰隔离，特别是大型、短暂的干扰。这些事件的例子包括潜艇上的水下冲击事件或建筑物上的炸弹爆炸事件。其目的是通过主动将内部结构与刚性外部结构隔离，将对关键部件造成的损害降至最低。在这样做的过程中，这项调查将制定总体控制策略，但也将密切关注用于执行控制策略的执行方案。事实证明，驱动方案是整个控制策略的一个非常重要的组成部分。该项目的意义和影响是提高了内部结构的损伤容限和生存能力。这将提高乘员的安全性，并降低为极高加速级别准备内部结构的成本。该项目的重点将放在尺寸较大的系统上，这需要一种能够以快速方式提供高力的驱动方案。电控流体驱动将被选为合适的技术。该项目将涉及理论和实验活动的结合。将分析和开发控制非线性系统的新方法和新组合。然后，这些将在隔振试验台上进行测试和实施，该试验台将在项目持续时间的第一阶段开发。

Name: Andrew AlleynePI Institution: University of Illinois, Urbana-ChampaignProposal Number: CMS-9900116Proposal Title: Active Control for Large-Scale Dynamic SystemsProject Abstract:The goal of this research project is to develop a fundamentally sound approach to the active vibration control of large scale dynamics systems. The motivation is to isolate large dynamic structures from external disturbances; particularly large, brief disturbances. Examples of these would be underwater shock events on submarines or bomb blast events on buildings. The desire is to minimize the damage done to crucial components by actively isolating an internal structure from a rigid external structure. In doing so, this investigation will develop the overall control strategy but will also pay close attention to the actuation scheme used to carry out the control strategy. The actuation scheme turns out to be an extremely non-trivial and essential component to the overall control strategy. The significance and impact of this project are increased damage tolerance and survivability of the internal structure. This would lead to increased safety for the occupants as well as a reduction in the cost of preparing the internal structure for extremely high acceleration levels.The focus of this project will be on systems that are large in size, necessitating an actuation scheme that is able to provide high forces in a rapid manner. Electronically controlled fluid actuation will be chosen as the appropriate technology. The project will involve a blend of theoretical and experimental activities. New ways and combinations of controlling nonlinear systems will be analyzed and developed. These will then be tested and implemented on a vibration isolation testbed that will be developed under the first phase of the project duration.