大跨桥梁结构电磁驱动AMD系统输入电压的在线控制研究
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摘要
通过物理学电磁理论分析建立大跨桥梁结构电磁驱动AMD振动控制系统的力电计算模型,根据大跨桥梁结构抗震设计特点,提出了基于遗传-BP神经网络的大跨桥梁结构电磁驱动AMD系统输入电压的在线实时控制方法,由传感器采集到的结构状态信号和外界地震激励信号瞬时做出系统输入电压选择,解决传统振动控制计算量繁重、运行慢导致时滞等问题,从而实现地震激励下桥梁结构在线较为精确的振动控制。
The force-electricity relationship of an electromagnet-drived active mass damper(AMD) working for a long span bridge is established based on the electromagnetic theory. Then, according to the earthquake resistance design characteristic of the long span bridge, an online control method of AMD’s input voltage based on GA-BP network is put forword. The input voltage can be instantly chosen as soon as the dynamic response and earthquake acceleration are gathered by the sensors. The big slow computation and time delay problem are both avoided. Thus, online vibration control of a long span bridge can be realized precisely.
The force-electricity relationship of an electromagnet-drived active mass damper(AMD) working for a long span bridge is established based on the electromagnetic theory. Then, according to the earthquake resistance design characteristic of the long span bridge, an online control method of AMD’s input voltage based on GA-BP network is put forword. The input voltage can be instantly chosen as soon as the dynamic response and earthquake acceleration are gathered by the sensors. The big slow computation and time delay problem are both avoided. Thus, online vibration control of a long span bridge can be realized precisely.
引文
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[2]张春巍.结构振动的电磁驱动AMD控制系统及其相关理论与试验研究[D].哈尔滨:哈尔滨工业大学,2005.
[3]张春巍,欧进萍.电磁驱动惯性型作动器与结构耦合系统建模与试验研究[J].振动工程学报,2006,19(3):289—295.
[4]张春巍,欧进萍.电磁驱动AMD系统控制结构地震响应的振动台试验[J].地震工程与工程振动,2006,26(2):104—110.
[5]蔡婧.斜拉桥地震反应的主动控制研究[D].成都:西南交通大学,2201.
[6]罗均,谢少荣,等.智能控制工程及其应用实例[M].北京:化学工业出版社,2004.
[7]代泽兵,黄金枝,王红霞.基于智能阻尼器的大跨度斜拉桥多支承激励地震振动控制[J].振动与冲击,2005,24(2):66—70.
[8]G櫣rsoy Turan.Active control of a cable-stayed bridge againstearthquake excitations[D].University of Illinois,2001.
[9]Dyke S J,Turan G,Caicedo J M,et al.Benchmark ControlProblem for Seismic Response of Cable-Stayed Bridges.2003,http://wusceel.cive.wustl.edu/quake/.
[10]何敏,王建国.地震激励下斜拉桥电磁驱动AMD主动控制系统参数优化[J].振动与冲击,2008,27(6):118—122.
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