电液振动台系统建模及仿真模型应用
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摘要
以伺服阀非线性建模为核心,利用MATLAB/SIMULINK建立的电液振动台非线性仿真模型,在与某型号地震模拟振动台实验对比中,仿真出了该系统在某些频段内存在的加速度波形失真趋势,且具有一定的准确性。仿真模型在离心场中电液振动台设计方面的应用表明:量化直观的仿真结果为系统参数设计和优化提供了重要参考;仿真系统为波形失真消除方案设计、控制算法研究和系统参数优化提供了良好的仿真平台。
In this paper,the nonlinear simulation model of the electro-hydraulic shaker was established by MATLAB/ SIMULINK software.The nonlinear modeling of servo valve is the technical kernel,and the model simulates the distortion trend of acceleration waveform in certain frequency bands.Comparing with result of the earthquake simulation shaker,the simulation result obtains favorable conformability with the experimental one.The application of this simulation model to design of electro-hydraulic shaker in centrifuge indicates that:the simulation result provides significant reference for system parameter design and optimization;the simulation system provides favorable simulation platform for eliminating waveform distortions,studying control algorithm,and optimizing the system parameter.
In this paper,the nonlinear simulation model of the electro-hydraulic shaker was established by MATLAB/ SIMULINK software.The nonlinear modeling of servo valve is the technical kernel,and the model simulates the distortion trend of acceleration waveform in certain frequency bands.Comparing with result of the earthquake simulation shaker,the simulation result obtains favorable conformability with the experimental one.The application of this simulation model to design of electro-hydraulic shaker in centrifuge indicates that:the simulation result provides significant reference for system parameter design and optimization;the simulation system provides favorable simulation platform for eliminating waveform distortions,studying control algorithm,and optimizing the system parameter.
引文
[1]Van Laak P A,Adalier K,Dobry R,Elgamal A W.Design of RPI's Large Servo hydraulic Centrifuge Shaker[C]//Proc.of Centrifuge 1998, 105-110.
[2]侯瑜京.土工离心机振动台及其试验技术[J].中国水利水电科学研究院学报,2006,4(1):15-22.
[3]Kusner D A,Rood J D,Burton G W.Signal reproduction fidelity of servohydraulic testing equipment.U.S/P.R.C Workshop on Experimental Methods in Earthquake Engineering,Report No.106.
[4]史孝成,曹文清.大型电液伺服模拟地震振动台的波形失真探讨[J].结构工程师,1994,3:41-44.
[5]王勇勤,张云飞,等.伺服阀非线性特性建模的液压弯辊系统动态特性[J].重庆大学学报(自然科学版),2005,(11):5-7.
[6]刘明俊,于明祁.自动控制原理[M].长沙:国防科技大学出版社, 2000.
[7]明仁雄,万会雄.液压与气压传动[M].北京:国防工业出版社。2003.
[8]高会生,等.MATLAB原理与工程应用[M].北京:电子工业出版社,2006.
[2]侯瑜京.土工离心机振动台及其试验技术[J].中国水利水电科学研究院学报,2006,4(1):15-22.
[3]Kusner D A,Rood J D,Burton G W.Signal reproduction fidelity of servohydraulic testing equipment.U.S/P.R.C Workshop on Experimental Methods in Earthquake Engineering,Report No.106.
[4]史孝成,曹文清.大型电液伺服模拟地震振动台的波形失真探讨[J].结构工程师,1994,3:41-44.
[5]王勇勤,张云飞,等.伺服阀非线性特性建模的液压弯辊系统动态特性[J].重庆大学学报(自然科学版),2005,(11):5-7.
[6]刘明俊,于明祁.自动控制原理[M].长沙:国防科技大学出版社, 2000.
[7]明仁雄,万会雄.液压与气压传动[M].北京:国防工业出版社。2003.
[8]高会生,等.MATLAB原理与工程应用[M].北京:电子工业出版社,2006.
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