• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Control of smart base isolated buildings with new semiactive devices and novel H2/LQG, H-infinity and time-frequency controllers.
【24h】

Control of smart base isolated buildings with new semiactive devices and novel H2/LQG, H-infinity and time-frequency controllers.

机译：使用新型半主动设备和新型H2 / LQG，H无穷大和时频控制器来控制智能基础隔离建筑物。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The large base displacement demands imposed by near field earthquakes on base isolated buildings and the development and implementation of novel semiactive control devices and new algorithms to overcome this problem, is a key challenge in the design of smart isolation systems, which is the main goal of this study. In this dissertation a comprehensive class of smart base isolated buildings, new control algorithms based on H 2/LQG, Hinfinity and time-frequency methods are developed. The frequency content of the earthquakes is incorporated into the H2/LQG and H infinity controllers using newly developed weighting filters. The time-frequency content of the earthquakes is also estimated by new control algorithm developed based on time-frequency methods, for variable stiffness isolation systems. Novel semiactive variable friction, variable damping and variable stiffness control devices are developed and their behavior studied analytically and experimentally. The new control algorithms and semiactive devices developed in this study are inherently smooth and do not cause sharp increases in floor accelerations or interstory drifts, while achieving reductions in base displacements. The newly developed semiactive devices and control algorithms are implemented in linear and nonlinear multi degree of freedom two and three dimensional smart base isolated buildings, subjected to a suite of near field earthquakes, and shown to be effective in reducing the response. A new smart base isolated benchmark building is developed to demonstrate the feasibility of implementation of the newly developed semiactive devices and controllers in full scale three dimensional structures subjected to strong near field earthquakes.
机译：近距离地震对基础隔震建筑物提出的大基础位移要求以及克服这种问题的新型半主动控制设备和新算法的开发与实施，是智能隔震系统设计的关键挑战，这是智能隔振系统的主要目标。这项研究。本文针对一类综合的智能基础隔震建筑，提出了基于H 2 / LQG，Hinfinity和时频方法的新型控制算法。使用新开发的加权滤波器将地震的频率内容合并到H2 / LQG和H无穷大控制器中。地震的时频含量也可以通过基于时频方法开发的用于可变刚度隔离系统的新控制算法进行估算。开发了新型半主动可变摩擦，可变阻尼和可变刚度控制装置，并对它们的行为进行了分析和实验研究。在这项研究中开发的新控制算法和半主动设备本质上是平滑的，不会导致地板加速度或层间偏移急剧增加，同时还能减少基础位移。新开发的半主动装置和控制算法在线性和非线性多自由度二维和三维智能基础隔离建筑物中实施，遭受了一系列近场地震的影响，并被证明可以有效地降低响应。开发了一座新的智能基础隔离基准楼，以演示在遭受强烈的近场地震的全尺寸三维结构中实施新开发的半主动设备和控制器的可行性。

著录项

  • 作者

    Narasimhan, Sriram.;

  • 作者单位

    Rice University.;

  • 授予单位 Rice University.;
  • 学科 Engineering Civil.; Applied Mechanics.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 208 p.
  • 总页数 208
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;应用力学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号