一种改进的磁流变阻尼器模型及其对振动主动控制的应用
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摘要
本文对一个带有磁流变阻尼器的二自由度弹簧阻尼系统的基础激励响应进行了主动控制数值仿真。使用改进的P-模型模拟磁流变阻尼器的力学性能,应用H2/LQG方法设计了状态反馈增益矩阵,选用Clipped-Op-timal控制律完成磁流变阻尼器控制电流的确定。仿真结果表明受控系统的响应水平显著小于无控系统,改进的P-模型运作良好,可以在数值仿真过程中代替真实磁流变阻尼器的工作。
A study on active control of structure using magnetorheological(MR) damper was presented.A numerical simulation was carried out for a two freedom degree system and the real damper was replaced by an improved phenomenological model of MR dampers.To achieve the control objective the controller was developed by H2/LQG method and limited by clipped-optimal control.The time history of the controlled current,the damping force of MR damper and the relative displacement were presented in the paper which indicated that the vibration of the structure was suppressed in controlled system and the improved phenomenological model can take the place of real MR damper in numerical simulation.
A study on active control of structure using magnetorheological(MR) damper was presented.A numerical simulation was carried out for a two freedom degree system and the real damper was replaced by an improved phenomenological model of MR dampers.To achieve the control objective the controller was developed by H2/LQG method and limited by clipped-optimal control.The time history of the controlled current,the damping force of MR damper and the relative displacement were presented in the paper which indicated that the vibration of the structure was suppressed in controlled system and the improved phenomenological model can take the place of real MR damper in numerical simulation.
引文
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[2]Dyke S J,Spencer Jr B F,Sain M K.Modeling and control of magneto-rheological dampers for seismic response reduction[J].SmartMaterials and Structures,1996,5(5):565-575.
[3]Spencer B F,Dyke S J,Sain M K.Phenomenological model of a magnetorheological damper[J].Journal of the Engineering Mechanics,ASCE Journal of Engineering Mechanics,1997,123(3):230-238.
[4]Xia P Q.An inverse model of MR dampers using optimal neural network and system identification[J].J of Sound and Vibration,2003,266:1009-1023.
[5]Choi S B,Lee S K,Park Y P.A hysteresis model for the field-dependent damping force of a magneto-rheological damper[J].J SoundVib,2001,245:375-383.
[6]周强,瞿伟廉.磁流变阻尼器的两种力学模型和试验验证[J].地震工程与工程振动,2002,22(4):144-150.
[7]杨广强,Spencer Jr B F,Carlson J D,Sain M K.足尺磁流变阻尼器的建模及动态特性[J].地震工程与工程振动,2001,21(4):8-23.
[8]关新春,欧进萍.磁流变耗能器的阻尼力模型及其参数确定[J].振动与冲击,2001,20(1):5-9.
[9]翁建生,胡海岩.磁流变阻尼器的实验建模[J].振动工程学报,2000,13(4):616-621.
[10]王唯,夏品奇.一种改进的磁流变阻尼器模型[J].工程力学,2005,22(1):102-106.
[11]http://www.lord.com/Default.aspx?tabid=2068&pid=3
[12]Wen Y K.Method for random vibration of hysteretic systems[J].Journal of the Engineering Mechanics Division,1976,102(2):249-263.
[13]Dyke S J,Spencer Jr B F,Quast P,Sain M K.The role of control-structure interaction in protective system design[J].Journal of En-gineering Mechanics,1995,121(2):322-338.
[2]Dyke S J,Spencer Jr B F,Sain M K.Modeling and control of magneto-rheological dampers for seismic response reduction[J].SmartMaterials and Structures,1996,5(5):565-575.
[3]Spencer B F,Dyke S J,Sain M K.Phenomenological model of a magnetorheological damper[J].Journal of the Engineering Mechanics,ASCE Journal of Engineering Mechanics,1997,123(3):230-238.
[4]Xia P Q.An inverse model of MR dampers using optimal neural network and system identification[J].J of Sound and Vibration,2003,266:1009-1023.
[5]Choi S B,Lee S K,Park Y P.A hysteresis model for the field-dependent damping force of a magneto-rheological damper[J].J SoundVib,2001,245:375-383.
[6]周强,瞿伟廉.磁流变阻尼器的两种力学模型和试验验证[J].地震工程与工程振动,2002,22(4):144-150.
[7]杨广强,Spencer Jr B F,Carlson J D,Sain M K.足尺磁流变阻尼器的建模及动态特性[J].地震工程与工程振动,2001,21(4):8-23.
[8]关新春,欧进萍.磁流变耗能器的阻尼力模型及其参数确定[J].振动与冲击,2001,20(1):5-9.
[9]翁建生,胡海岩.磁流变阻尼器的实验建模[J].振动工程学报,2000,13(4):616-621.
[10]王唯,夏品奇.一种改进的磁流变阻尼器模型[J].工程力学,2005,22(1):102-106.
[11]http://www.lord.com/Default.aspx?tabid=2068&pid=3
[12]Wen Y K.Method for random vibration of hysteretic systems[J].Journal of the Engineering Mechanics Division,1976,102(2):249-263.
[13]Dyke S J,Spencer Jr B F,Quast P,Sain M K.The role of control-structure interaction in protective system design[J].Journal of En-gineering Mechanics,1995,121(2):322-338.
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