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

SGER：基于可靠性的半主动和再生系统控制算法及其在土木工程中的应用

• 批准号: 0505887
• 负责人: Wilfred Iwan
• 金额: --
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-12-15 至 2006-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0505887&HistoricalAwards=false
• 关键词: SGER; Reliability; Based; Control; Algorithms

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.

该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得到土木工程从业者的广泛接受，首先必须证明，与简单和成本较低的系统相比，与这种装置的设计和安装相关的投资是合理的，因为结构可靠性得到了持续改善。这项研究的结果提供了一个严格的方法，控制器可以设计在极端地震事件的最佳可靠性。 因此，这项工作的基本贡献是一个控制器的设计工具，它产生一个明确的评估“尽可能好”的可靠性，实现与一个给定的控制设备，以及控制法，实现it.The探索性的研究，在这里提出的构成了第一步，在这一领域的全面研究调查。在这项研究中开发的控制器设计方法不同于其他现有的方法，因为它们将可靠性评估直接纳入控制系统的设计优化。这种新的方法是一个重要的一步，了解这些机电系统可以用来提高结构的可靠性的程度。由于这个问题基本上是非线性的，数学计算是困难的。这项研究也是第一项在统一的分析框架中同时治疗半主动和再生系统的研究。 半主动和再生控制系统的性能评估系统的可靠性为基础的发展打开了大门，这项技术的应用到许多新的领域。这将导致改进的控制策略，为广泛的系统，可靠性是很重要的。 该研究将为定量评估结构响应控制的经济效益提供依据。这项研究的结果也将导致结构分析和控制的理解方式发生根本性变化，从而导致机电一体化更大程度地融入这一领域。