土木工程结构振动的智能控制

INTELLIGENT CONTROL FOR STRUCTURAL VIBRATION OF CIVIL ENGINEERING

  • 摘要: 该文主要介绍磁流变液阻尼器及其对工程结构振动的智能控制方法。指出了磁流变液阻尼器及其智能控制方法在目前研究中存在的三个主要问题:磁流变液的稳定性指标达不到要求、磁流变液阻尼器的半主动控制策略还存在缺陷、相对于常规被动阻尼器的技术优势得不到体现。针对此问题,建立了使磁流变液的稳定性达到国际领先水平的磁流变液的设计与制备方法及技术,提出了半主动控制效果优于“被动-开”的改进的固定增量半主动控制策略,并应用该理论和技术解决了常规阻尼器所不能解决的三类工程结构振动控制问题。工程实例的设计和仿真分析表明:该研究解决了磁流变液阻尼器对土木工程结构振动智能控制中存在的三个问题,使磁流变液阻尼器的智能控制方法与常规的结构振动控制方法相比具有较强的技术优势和应用前景。

     

    Abstract: The paper introduces magneto-rheological damper and its intelligent control method for engineering structural vibration, and points out three existing problems: 1) sedimentation proof stability index can hardly satisfy the requirements for engineering application; 2) the shortages in semi-active control tactics; 3) the advantages of magneto-rheological damper are limited to ordinary dampers. Realizing the problems mentioned above, the paper establishes designing method and fabricating technologies for magneto-rheological fluids. Then, the modified fixed-incremental semi-active control tactics is proposed, whose control effect is better than that of passive-on control tactics. Meanwhile, the paper applies the theory and technologies to solving three kinds of engineering structural vibration control problems which can not be solved by ordinary dampers. Results show that the methods and techniques mentioned in the paper have solved the three problems. This research widens the application of intelligent control by magneto-rheological damper.

     

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