Real-time identification of time-varying structures and integration with vibration control based on extended Kalman Filter with unknown inputs

Abstract

建筑结构的参数识别与损伤诊断是结构健康监测领域中的一项重要课题。在过去的数十年内,业内许多专家与学者给出了理论各异的,基于结构振动响应的参数识别与损伤诊断方法。然而,这其中的许多方法,大都是针对于时不变系统的。但在重大荷载发生时(如高烈度地震等),结构单元发生损伤,它的物理参数(如刚度等)在荷载作用中是随时间变化的。为了实时地捕捉这一变化,结构健康监测系统应该具备在线地识别时变结构参数的能力。 因此本论文在第二章,在前人基础上得到了基于改进的自适应卡尔曼滤波的时变系统在线识别方法。与现有文献相比,该方法利用了自适应因子来反映结构参数的变化,能够仅在结构响应数据部分已知的情况下,在线地识别结...Structural identification and damage detection are significant subject in Structural health monitoring(SHM) technology. In the past few decades, different experts and scholars have come up with different theories and methods of Structural identification and damage detection based on structural vibration response. While, many of these identification methodologies are mostly aimed at the time-invari...学位:工学硕士院系专业:建筑与土木工程学院_结构工程学号:2532014115177

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