输电塔减震主动控制中GMM作动器的优化布置研究
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摘要
利用大型分析软件ANSYS建立输电塔有限元模型,并对模型进行简化,从中提取模型的质量矩阵和刚度矩阵,然后基于遗传算法对输电塔简化模型进行自主研发的GMM(Giant MagnetostrictiveMaterial)主动杆件布置位置的优化计算,得出不同数量的GMM主动杆件在输电塔抗震控制中的最优布置位置。同时采用LQR算法对比分析了在一维和三维El-Centro地震波作用下有、无减震控制措施的输电塔位移和加速度地震响应。通过有关参数分析计算,分析表明采取GMM主动杆件进行主动控制能明显衰减输电塔模型的地震响应,具有比较理想的减震效果。
A power transmission tower model simplified was created with the analysis software ANSYS,the mass matrix and stiffness one of the model were obtained.And then,the GMM(giant magnetostrictive material) actuators layout of the simplified model was optimized based on a genetic algorithm,the optimal placements of different number of GMM actuators were calculated.At the same time,the power transmission tower seismic responses including displacements and accelerations with vibration control and no vibration control under the action of 1-D and 3-D El-Centro seismic waves were analyzed using LQR algorithm.Based on the related parametric analysis,the results showed that the power transmission tower seismic responses can be significantly reduced using GMM actuators with active vibration control ability,and they have ideal vibration-reduction effect.
A power transmission tower model simplified was created with the analysis software ANSYS,the mass matrix and stiffness one of the model were obtained.And then,the GMM(giant magnetostrictive material) actuators layout of the simplified model was optimized based on a genetic algorithm,the optimal placements of different number of GMM actuators were calculated.At the same time,the power transmission tower seismic responses including displacements and accelerations with vibration control and no vibration control under the action of 1-D and 3-D El-Centro seismic waves were analyzed using LQR algorithm.Based on the related parametric analysis,the results showed that the power transmission tower seismic responses can be significantly reduced using GMM actuators with active vibration control ability,and they have ideal vibration-reduction effect.
引文
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[2]潘继,陈龙祥,蔡国平.柔性板压电作动器的优化位置与主动控制实验研究[J].振动与冲击,2010,29(2):117 -120. PAN Ji.CHEN Long-Xiang,CAI Guo-Ping.Optimal positioning of PZT actuators and active control testing for a flexible plate [J].Journal of Vibration and Shock,2010,29(2):117 -120.
[3]任建亭,闫云聚,姜节胜.振动控制传感器/作动器的数目和位置优化设计[J].振动工程学报,2001,14(2):237-241. REN Jian-ting,YAN Yun-ju,JIANG Jie-sheng.Optimal Design Method for Sensors/Actuators Placement and Numbers in the Vibration Control of Flexible Structure System[J]. Journal of Vibration Engineering,2001,14(2):237 -241.
[4]欧进萍.结构振动控制—主动、半主动和智能控制[M].北京:科学出版社,2003.
[5]Cho S W,Kim B W,Jung H J.Implementation of modal control for seismically excited structures using magnetorheological dampers[J].Journal of Engineering Mechanics,2005,131(2):177-184.
[6]Liu Z S,Wang D J,Hu H C,et al.Measures of modal controllability and observability in vibration control of flexible Structures[J].Journal of Guidance Control and Dynamics, 1994,17(6):1377 -1380.
[7]李杰,江建华.地震次生火灾动态危险性分析方法研究[J].自然灾害学报,2001,10(2):31-36. LI Jie,JIANG Jian-hua.Study on dynamic hazard analysis of post-earthquake fire[J].Journal of Natural Disasters,2001,10 (2):31-36.
[8]雷英杰,张善文,李续武,等.MATLA遗传算法工具箱及应用[M].西安:西安电子科技大学出版社,2005.
[9]容里.压电作动器设计及双层球面网壳结构振动主动控制研究[D].杭州:浙江大学,2008:57.
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