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首页> 外文期刊>Mechanical systems and signal processing >Joint input-response estimation for structural systems based on reduced-order models and vibration data from a limited number of sensors
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Joint input-response estimation for structural systems based on reduced-order models and vibration data from a limited number of sensors

机译:基于降阶模型和有限数量传感器的振动数据的结构系统联合输入响应估计

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摘要

An algorithm is presented for jointly estimating the input and state of a structure from a limited number of acceleration measurements. The algorithm extends an existing joint input-state estimation filter, derived using linear minimum-variance unbiased estimation, to applications in structural dynamics. The filter has the structure of a Kalman filter, except that the true value of the input is replaced by an optimal estimate. No prior information on the dynamic evolution of the input forces is assumed and no regularization is required, permitting online application. The effectiveness and accuracy of the proposed algorithm are demonstrated using data from a numerical cantilever beam example as well as a laboratory experiment on an instrumented steel beam and an in situ experiment on a footbridge.
机译:提出了一种算法,用于从有限数量的加速度测量值中联合估计结构的输入和状态。该算法将使用线性最小方差无偏估计派生的现有联合输入状态估计滤波器扩展到结构动力学中的应用。该滤波器具有卡尔曼滤波器的结构,除了输入的真实值被最佳估计值替代。假设没有关于输入力动态变化的先验信息,也不需要正规化,即可在线申请。使用数值悬臂梁示例的数据以及在仪器钢梁上的实验室实验和在人行天桥上的原位实验,证明了该算法的有效性和准确性。

著录项

  • 来源
    《Mechanical systems and signal processing》 |2012年第5期|p.310-327|共18页
  • 作者单位

    Department of Civil Engineering, K.U. Leuven, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium;

    Department of Civil Engineering, K.U. Leuven, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium, Department of Mechanical Engineering, University ofThessaly, Volos 38334, Greece;

    Flanders' Mechatronics Technology Centre, Celestijnenlaan 300D, B-3001 Leuven, Belgium;

    Department of Civil Engineering, K.U. Leuven, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium;

    Department of Civil Engineering, K.U. Leuven, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium;

    Department of Civil Engineering, K.U. Leuven, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    state estimation; response prediction; input estimation; kalman filter; force identification;

    机译:状态估计反应预测;输入估计;卡尔曼滤波力识别;

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