Seismic response control for system with distributed parameters based on state observer
Received:January 23, 2010  Revised:September 08, 2010
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DOI:10.7511/jslx201105003
KeyWord:system with distributed parameters  seismic response  vibration control  full state observers  modal control algorithm
              
AuthorInstitution
刘彦辉 广州大学 减震控制与结构安全国家重点实验室培育,广州 ;北京工业大学 工程抗震与结构诊治北京市重点实验室,北京
杜永峰 西部土木工程防灾减灾教育部工程研究中心,兰州
周福霖 广州大学 减震控制与结构安全国家重点实验室培育,广州 ;北京工业大学 工程抗震与结构诊治北京市重点实验室,北京
谭平 广州大学 减震控制与结构安全国家重点实验室培育,广州
闫维明 北京工业大学 工程抗震与结构诊治北京市重点实验室,北京
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Abstract:
      For seismic response control for the system with distributed parameters, the motion control equation of the system with distributed parameters is presented and sequential optimal modal control algorithm is derived. Due to the full state requirement of sequential optimal modal control algorithm, the full state observer is proposed. Then the full state of the system under earthquake is reconstructed by the seismic response of the system easily measured by feedback sensors. Therefore, the seismic response control for system with distributed parameters is realized in the actually engineering by using the sequential optimal modal control algorithm based on full state observers. A seismic response control case of the isolated 330 KV voltage transformer is analyzed by adopting sequential optimal modal control algorithm and sequential optimal modal control algorithm based on full state observers respectively, suggesting that the two control algorithms have the favorable control efficiency for the system with distributed parameters under earthquake and the displacement of isolation layer and acceleration of upper voltage transformer are decreased in different degree. In addition, the sequential optimal modal control algorithm based on full state observers can control the seismic response of the system with distributed parameters by the feedback seismic response measured easily and has the same control effect with sequential optimal modal control algorithm adopting full state feedback.