SGER: Reliability-Based Control Algorithms for Semi-Active and Regenerative Systems with Application to Civil Engineering

项目概述本项目的最终目标是为土木工程应用开发先进的半主动和再生控制策略。为了使这种控制技术在土木工程从业者中得到更广泛的接受，必须首先证明与设计和安装这种装置相关的投资是合理的，因为与更简单和更低成本的系统相比，结构可靠性的持续改进是合理的。这项研究的结果提供了一种严格的方法，可以用来设计控制器，以在极端地震事件中实现最佳可靠性。因此，这项工作的基本贡献是一种控制器设计工具，它对给定控制设备所能实现的“最佳可能”可靠性以及实现该可靠性的控制律进行了明确的评估。这里提出的探索性研究构成了在这一领域进行全面研究调查的第一步。本研究开发的控制器设计方法不同于现有的其他方法，因为它们直接将可靠性评估纳入控制系统设计优化。这种新的方法代表着朝着理解这些机电系统可以在多大程度上用于提高结构的可靠性迈出了重要的一步。由于这个问题从根本上是非线性的，所以数学是令人敬畏的。这项研究也是第一次在统一的分析框架下同时处理半主动系统和再生系统。为评估半主动和再生控制系统的性能而开发的基于系统可靠性的基础为这项技术在许多新领域的应用打开了大门。这将导致对可靠性至关重要的各种系统的控制策略得到改进。这项研究将为在考虑经济因素的情况下定量评估使用结构反应控制的益处提供基础。这项研究的结果还将从根本上改变土木工程课程教授结构分析和控制的方式，从而使机电一体化更好地融入这一领域。

Project SummaryThe ultimate goal of this project is the development of advanced semi-active and regenerative control strategies for civil engineering applications. In order for such control technologies to gain wider acceptance by practitioners in civil engineering, it must first be shown that the investment associated with the design and installation of such devices is justified by consistent improvement in structural reliability, in comparison to simpler and less costly systems. The results of this research provide a rigorous method by which controllers may be designed for optimal reliability during extreme seismic events. Thus, the fundamental contribution of this work is a controller design tool which yields a clear assessment of the "best possible" reliability achievable with a given control device, as well as the control law which achieves it. The exploratory research proposed herein constitutes the first step toward a full research investigation in this area. The controller design methodologies developed in this research differ from other existing approaches in that they incorporate reliability assessment directly into the control system design optimization. This new approach represents a significant step toward understanding of the extent to which these mechatronic systems may be used to enhance the reliability of structures. Because of the fundamentally nonlinear nature of this problem, the mathematics are formidable. This research is also the first study to simultaneously treat semi-active and regenerative systems in a unified, analytical framework. The development of a systematic reliability-based foundation for evaluation of the performance of semi-active and regenerative control systems opens the door for application of this technology to many new areas. This will lead to improved control strategies for a wide range of systems for which reliability is of importance. This research will provide a basis for quantitatively evaluating the benefits of use of structural response control taking into account economic considerations. The results of this research will also lead to fundamental changes in the way structural analysis and control is understood taught in civil engineering courses, thereby leading to greater integration of mechatronics into this field.