Faculty Early Development (CAREER) Program-Optimal Output Feedback Control at Discrete Locations for Civil Structures

教师早期发展（职业）计划-土木结构离散位置的最佳输出反馈控制

• 批准号: 9703020
• 负责人: Makola Abdullah
• 金额: $ 22.01万
• 依托单位: Florida Agricultural and Mechanical University
• 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: 1997-09-01 至 2003-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9703020&HistoricalAwards=false
• 关键词: Faculty; Early; Development; CAREER; Program

9703020 Abdullah The dynamic responses of structures can produce situations that can range from uncomfortable to unsafe for the building occupants. In recent years, control theories and technologies have been used to reduce the dynamic responses of tall civil structures. Most optimal control algorithms involve full state feedback control. This type of control requires good estimates of the velocity and displacement throughout the structure. However, there are several important advantages of output feedback control: it requires less computational effort and has the robustness of a passive system. In the research conducted under this CAREER award, control algorithms will be formulated for the optimization of feedback gains and controller placement for flexible continuous and discrete structures, such as tall buildings. Tall buildings are of particular interest because the control devices must be placed at floor level. The fundamental basis for these algorithms is the calculation of the gradients of the performance function with respect to the gain and placement matrices. For the optimal placement of controllers at discrete locations in flexible continuous structures, a mixed-integer method will be used to optimize the placement and gains simultaneously. The effectiveness of the algorithm will be demonstrated for stochastic wind loads in the frequency domain and for deterministic earthquake loads in the time domain. The educational component of this CAREER award will involve creating Web-based modules for use in graduate and undergraduate courses to demonstrate the concepts of structural dynamics and civil engineering control devices. ***

97030 Abdullah结构的动态响应可能会产生可能从不舒服到建筑物居住者不安全的情况。 近年来，控制理论和技术已被用来减少高大的民用结构的动态反应。 大多数最佳控制算法涉及全州反馈控制。 这种类型的控制需要良好的估计整个结构的速度和位移。 但是，输出反馈控制有几个重要的优势：它需要更少的计算工作，并且具有被动系统的鲁棒性。 在该职业奖项进行的研究中，将制定控制算法，以优化反馈收益和控制器的放置，以使用柔性的连续和离散结构（例如高建筑物）。 高大的建筑物特别感兴趣，因为必须将控制装置放置在地板上。 这些算法的基本基础是相对于增益和放置矩阵的性能函数梯度的计算。 为了在柔性连续结构中最佳的控制器在离散位置的最佳放置，将使用混合组合方法来优化放置并同时获得。 将证明该算法的有效性对于频域中的随机风载和时间域中的确定性地震负荷。 该职业奖的教育组成部分将涉及创建基于Web的模块，用于研究生和本科课程，以展示结构性动态和土木工程控制设备的概念。 ***