地震模拟振动台双回路复合控制方法研究  

Research on Double-loop Compound Control Method for Seismic Simulation Shaking Table

作　　者：任翔 栾海英 刘增元 REN Xiang;LUAN Hai-ying;LIU Zeng-yuan(Beijing Research Institute of Automation for Machinery Industry Co.,Ltd.,Beijing 100120)

机构地区：[1]北京机械工业自动化研究所有限公司,北京100120

出　　处：《液压与气动》2024年第6期121-132,共12页Chinese Hydraulics & Pneumatics

摘　　要：地震模拟振动台实验是评价建筑模型抗震性能、降低地震破坏的有效方法,其中输入振动波形的高精度复现尤为关键。针对实际实验中存在的影响精度的多种因素,如驱动信号传递过程中的非线性因素,模型简化带来的误差以及实验干扰的动态变化等,在传统的三参量控制方法的基础上,提出了一种模型参考自适应控制和三参量控制方法相结合的复合控制策略,并引入自适应谐波消除器来解决正弦信号的谐波失真问题。通过建模仿真和振动台实验,验证了提出的控制策略在提高输出信号跟踪精度、减小波形失真度等方面的有效性。Seismic simulation shaking table experiments are the effective method to evaluate the seismic performance of building models and reduce seismic damage,among which the high-precision reproduction of input vibration waveform is particularly crucial.In view of the many factors that affect the accuracy in the actual experiment,such as nonlinear factors in the process of driving signal transmission,errors caused by model simplification and dynamic changes of experimental interference,a compound control strategy combining model reference adaptive control and three-parameter control is proposed on the basis of the traditional three-parameter control method.An adaptive harmonic eliminator is introduced to solve the harmonic distortion problem of sinusoidal signal.Through modeling simulation and shaking table experiment,the effectiveness of the proposed control strategy in improving output signal tracking accuracy and reducing waveform distortion is verified.

关 键 词：地震模拟振动台 三参量控制策略 模型参考自适应控制 谐波抑制 

分 类 号：TH137[机械工程—机械制造及自动化]