压电变摩擦阻尼结构的模糊控制
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摘要
为了减轻结构的地震反应,提出了模糊控制算法用于结构的振动控制,控制的目标是减轻结构的位移和加速度响应.设计制作了一款新型的压电变摩擦阻尼器,并将压电变摩擦阻尼器作为控制装置,通过模糊控制算法建立了施加在压电变摩擦阻尼器上的电压与结构的响应关系,量化因子对模糊控制的效果影响极大,通过试算,本文给出了量化因子的计算公式.算例表明,对于安装有压电变摩擦阻尼器的结构,采用模糊控制算法的效果很好.
Fuzzy control algorithm has been proposed in this paper in order to reduce the structural damage under the earthquake,the control goal is to minimize both the maximum displacement and acceleration responses of the structure.A new piezoelectric friction damper is designed and fabricated,the piezoelectric friction damper is regarded as the control device,interactive relationships between structural responses and input voltages of piezoelectric friction dampers are established by using the fuzzy controller.The scaling factors have great influence on the result of fuzzy controller,the equation of scaling factor is established in this paper.Numerical simulations for multiple damper cases are given to show the effectiveness and efficiency to the fuzzy control.
Fuzzy control algorithm has been proposed in this paper in order to reduce the structural damage under the earthquake,the control goal is to minimize both the maximum displacement and acceleration responses of the structure.A new piezoelectric friction damper is designed and fabricated,the piezoelectric friction damper is regarded as the control device,interactive relationships between structural responses and input voltages of piezoelectric friction dampers are established by using the fuzzy controller.The scaling factors have great influence on the result of fuzzy controller,the equation of scaling factor is established in this paper.Numerical simulations for multiple damper cases are given to show the effectiveness and efficiency to the fuzzy control.
引文
[1]秦荣.智能结构力学[M].北京:科学出版社,2005.
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[3]Kamada T.Active Vibration of Frame structures ofShear and Bending Type with Smart Structure UsingPiezoelectric Actuator[C].Proceedings of SPIE,1997,3041:75-86.
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[6]瞿伟廉,陈朝晖,徐幼麟.压电材料智能磨擦阻尼器对高耸钢塔结构风振反应的半主动控制[J].地震工程与工程振动,2000,20(2):74-80.
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[8]李士勇.模糊控制.神经控制和智能控制论[M].哈尔滨:哈尔滨工业大学出版社,1996.
[2]秦荣,王涛,张永兵,等.压电智能梁振动主动控制分析的新方法[J].广西大学学报:自然科学版,2005,32(4):267-271.
[3]Kamada T.Active Vibration of Frame structures ofShear and Bending Type with Smart Structure UsingPiezoelectric Actuator[C].Proceedings of SPIE,1997,3041:75-86.
[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.
[5]Chen G D,Chen C C.Behavior of Piezoelectric frictiondamper under dynamic loading[C].Proc,SPIE Symp.on Smart Structure Materials,Smart systems forBridges,Structures and Highways Newport Beach,Calif,2000,3988:54-63.
[6]瞿伟廉,陈朝晖,徐幼麟.压电材料智能磨擦阻尼器对高耸钢塔结构风振反应的半主动控制[J].地震工程与工程振动,2000,20(2):74-80.
[7]徐赵东,郭迎庆.MATLAB语言在建筑抗震工程中的应用[M].北京:科学出版社,2004.
[8]李士勇.模糊控制.神经控制和智能控制论[M].哈尔滨:哈尔滨工业大学出版社,1996.
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