动力子结构试验加速度振荡及其控制
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摘要
考虑试件质量的实时子结构试验中,因为试验系统采用数字控制器,输入到物理试验系统的采样离散信号包含高频分量,所以试件的加速度响应出现高频振荡。研究了高频振荡产生的原因和控制高频振荡的方法。首先对物理试验系统建立传递函数模型,分析了高频振荡产生的机理。然后采用前置滤波和后置滤波结合的复合滤波方法来控制高频振荡。对纯质量和动力试件分别进行了阶跃输入和地震波加载试验仿真,结果验证了这种方法的优越性。最后,采用中心差分法对纯质量试件进行实时子结构试验仿真,验证了复合滤波控制方法的有效性。
In the real-time substructure test,considering the specimen mass and digital test system controller,the discrete signals inputted to physical test system include high frequency components, which may cause high frequency oscillation in specimen acceleration response.The cause of high-frequency oscillation and a method for controlling the oscillation are presented in this paper.Firstly, the transfer function of a physical test system was developed to analyze the mechanism of the high-frequency oscillation.Then,a composite filter combining pre-filter and post-filter was adopted to control the high-frequency oscillation.Numerical simulation of pure mass and dynamic specimens was carried out with step signal input and seismic wave input,respectively.Results validate the effectiveness of this method.Time-history simulation of a real-time substructure test with pure mass specimen shows the validity of the composite filter controlling method.
In the real-time substructure test,considering the specimen mass and digital test system controller,the discrete signals inputted to physical test system include high frequency components, which may cause high frequency oscillation in specimen acceleration response.The cause of high-frequency oscillation and a method for controlling the oscillation are presented in this paper.Firstly, the transfer function of a physical test system was developed to analyze the mechanism of the high-frequency oscillation.Then,a composite filter combining pre-filter and post-filter was adopted to control the high-frequency oscillation.Numerical simulation of pure mass and dynamic specimens was carried out with step signal input and seismic wave input,respectively.Results validate the effectiveness of this method.Time-history simulation of a real-time substructure test with pure mass specimen shows the validity of the composite filter controlling method.
引文
[1]Nakashima M,Kato H,Takaoka E.Development of real-time Pseudo dynamic Testing[J].Earthquake Engineering and Structural Dynamics,1992,21(1):79-92.
[2]李进,王焕定,张永山,赵桂峰.高阶单步实时动力子结构试验技术研究[J].地震工程与工程振动,2005,25(1):97-101(LI Jin,WANG Huanding,ZHANG Yongshan,ZHAO Guifeng.The research of a high order single step method for real-time substructure testing[J].Earthquake Engineering and Engineering Vibration,2005,25(1):97-101(in Chinese))
[3]袁涌,熊世树,家村浩和,朱宏平.速度控制型子结构实验系统[J].同济大学学报(自然科学版),2008,36(9):1182-1185,1231(YUAN Yong,XIONG Shishu,Hirahazu Iemura,ZHU Hongping.Real-Time Substructure Hybrid Earthquake Loading System Based on Velocity-Based Loading Concept[J].Journal of TongJi University(Natural Science),2008,36(9):1182-1185,1231(in Chinese))
[4]汪强,王进廷,金峰.实时耦联动力试验中作动器反应迟滞对于试验结果的影响研究[C].首届全国水工抗震防灾学术会议论文集,2006:326-332(WANG Qiang,WANG Jinting,JIN Feng.Study of Test Results Influences Caused By actuator Response Delay in Real-time Dynamic Hybrid Testing[C].The First hydraulic anti-seismic disaster prevention Conference of China,2006:326-332(in Chinese))
[5]郭玉荣,张国伟,肖岩,刘一江,张捷.单自由度结构远程分析及拟动力试验平台[J].湖南大学学报,2006,33(2):18-21(GUO Yurong,ZHANG Guowei,Xiao Yan,Liu Yijiang,ZHANG Jie.Analysis of Single degree of freedom structure and Pseudo Dynamic testing platform[J].Journal of Hunan University(Natural Sciences),2006,33(2):18-21(in Chinese))
[6]吴斌,王倩颖.实时子结构实验的研究进展[J].实验力学,2007,22(6):548-555(WU Bin,WANG Qianying.Development of Real-time Substructure Testing[J].Journal of Experimental Mechanics,2007,22(6):548-555(in Chinese))
[7]Williams D M,Williams M S,Blakeborough A.Numerical modeling of a servo-hydraulic testing system for structures[J].Journal of Engineering Mechanics,2001,127(8):816-827.
[8]王贞,吴斌.隐式动力子结构试验的稳定性分析[J].湖南大学学报(自然科学版),2009,36(10):23-28(Wang Zhen,WU Bin.Stability Analysis of Implicit Dynamic Substructure Experiment[J].Journal of Hunan University(Natural Sciences),2009,36(10):23-28(in Chinese))
[9]Wu B,Deng L X,Yang X D.Stability of central difference method for dynamic real-time substructure testing[J].Earthquake Engineering and Structural Dynamics,2009,38(2):1649-1663.
[10]Horiuchi T,Inoue M,Konno T.Development of a real-time hybrid Experimental System using a Shaking Table[C].The12th World Conference on Earthquake Engineering,New Zealand,2000:paper no.0843
[11]Jung R Y,Shing P B.Performance evaluation of a real-time Pseudodynamic test system[C].Earthquake Engineering and Structural Dynamics,2006;35(7):789-810.
[12]吴斌,尹全林,张涛.实时子结构试验中的液压伺服加载系统数值模型[J].哈尔滨工业大学学报(自然科学版),2010(WU Bin,YING Quanling,ZHANG Tao.Numerical model of hydraulic servo loading system in real-time substructure test.Journal of Harbin Institute of Technology(Natural Sciences),2010(in Chinese))
[13]Zhao J,French C,Shield C,Posbergh T.Considerations for the Development of Real-time Dynamic Testing using Servo-hydraulic actuation[J].Earthquake Engineering and Structural Dynamics,2003,32:1773-1794.
[14][瑞典]奥斯特隆姆,威顿马克(周兆英,林喜荣,刘中仁等译).计算机控制系统-原理与设计[M].北京:电子工业出版社,2001:222-225([Sweden]Karl J.Astrom,Bjorn Wittenmark(ZHOU Zhaoying,Ling Xirong,Liu Zhongren translated).Computer-Controlled Systems Theory and Design[M].Beijing:Publishing House of Electronics Industry,2001:222-225(in Chinese))
[2]李进,王焕定,张永山,赵桂峰.高阶单步实时动力子结构试验技术研究[J].地震工程与工程振动,2005,25(1):97-101(LI Jin,WANG Huanding,ZHANG Yongshan,ZHAO Guifeng.The research of a high order single step method for real-time substructure testing[J].Earthquake Engineering and Engineering Vibration,2005,25(1):97-101(in Chinese))
[3]袁涌,熊世树,家村浩和,朱宏平.速度控制型子结构实验系统[J].同济大学学报(自然科学版),2008,36(9):1182-1185,1231(YUAN Yong,XIONG Shishu,Hirahazu Iemura,ZHU Hongping.Real-Time Substructure Hybrid Earthquake Loading System Based on Velocity-Based Loading Concept[J].Journal of TongJi University(Natural Science),2008,36(9):1182-1185,1231(in Chinese))
[4]汪强,王进廷,金峰.实时耦联动力试验中作动器反应迟滞对于试验结果的影响研究[C].首届全国水工抗震防灾学术会议论文集,2006:326-332(WANG Qiang,WANG Jinting,JIN Feng.Study of Test Results Influences Caused By actuator Response Delay in Real-time Dynamic Hybrid Testing[C].The First hydraulic anti-seismic disaster prevention Conference of China,2006:326-332(in Chinese))
[5]郭玉荣,张国伟,肖岩,刘一江,张捷.单自由度结构远程分析及拟动力试验平台[J].湖南大学学报,2006,33(2):18-21(GUO Yurong,ZHANG Guowei,Xiao Yan,Liu Yijiang,ZHANG Jie.Analysis of Single degree of freedom structure and Pseudo Dynamic testing platform[J].Journal of Hunan University(Natural Sciences),2006,33(2):18-21(in Chinese))
[6]吴斌,王倩颖.实时子结构实验的研究进展[J].实验力学,2007,22(6):548-555(WU Bin,WANG Qianying.Development of Real-time Substructure Testing[J].Journal of Experimental Mechanics,2007,22(6):548-555(in Chinese))
[7]Williams D M,Williams M S,Blakeborough A.Numerical modeling of a servo-hydraulic testing system for structures[J].Journal of Engineering Mechanics,2001,127(8):816-827.
[8]王贞,吴斌.隐式动力子结构试验的稳定性分析[J].湖南大学学报(自然科学版),2009,36(10):23-28(Wang Zhen,WU Bin.Stability Analysis of Implicit Dynamic Substructure Experiment[J].Journal of Hunan University(Natural Sciences),2009,36(10):23-28(in Chinese))
[9]Wu B,Deng L X,Yang X D.Stability of central difference method for dynamic real-time substructure testing[J].Earthquake Engineering and Structural Dynamics,2009,38(2):1649-1663.
[10]Horiuchi T,Inoue M,Konno T.Development of a real-time hybrid Experimental System using a Shaking Table[C].The12th World Conference on Earthquake Engineering,New Zealand,2000:paper no.0843
[11]Jung R Y,Shing P B.Performance evaluation of a real-time Pseudodynamic test system[C].Earthquake Engineering and Structural Dynamics,2006;35(7):789-810.
[12]吴斌,尹全林,张涛.实时子结构试验中的液压伺服加载系统数值模型[J].哈尔滨工业大学学报(自然科学版),2010(WU Bin,YING Quanling,ZHANG Tao.Numerical model of hydraulic servo loading system in real-time substructure test.Journal of Harbin Institute of Technology(Natural Sciences),2010(in Chinese))
[13]Zhao J,French C,Shield C,Posbergh T.Considerations for the Development of Real-time Dynamic Testing using Servo-hydraulic actuation[J].Earthquake Engineering and Structural Dynamics,2003,32:1773-1794.
[14][瑞典]奥斯特隆姆,威顿马克(周兆英,林喜荣,刘中仁等译).计算机控制系统-原理与设计[M].北京:电子工业出版社,2001:222-225([Sweden]Karl J.Astrom,Bjorn Wittenmark(ZHOU Zhaoying,Ling Xirong,Liu Zhongren translated).Computer-Controlled Systems Theory and Design[M].Beijing:Publishing House of Electronics Industry,2001:222-225(in Chinese))
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