There are more and more research on active control in the application of civil structure.However,some problems such as the drive levers design,optimization and control law problems restricted its application developme...There are more and more research on active control in the application of civil structure.However,some problems such as the drive levers design,optimization and control law problems restricted its application development.In this work,we presented a kind of piezoelectric drive lever to convert pulling force to pressure without flexural moments based on characteristics of the piezoelectric pile,using the genetic algorithm to optimize the layout of the driving lever,which greatly improved the efficiency.Then an active control experiment on a three-layer intelligence space structure was carried out.The experimental data show that the intelligent structures can produce through active control greatly inhibitive effects on the correspondingly controlled modal displacement and acceleration.Spectral analysis shows that the corresponding modal damping coefficient can be improved to different degrees.展开更多
基金Funded by General Planned Research Program of the National Natural Science Foundation of China (No. 90715003)Key Science and Technology Program of the Ministry of Education of China (No. 209124)+6 种基金Ph.D. Programs Foundation of the Ministry of Education of China (No. 200807030002)Shaanxi Key Industry Research Project (No. 2008K07-31)Shaanxi Natural Science Foundation Research Fund (No. 2007E205)Shaanxi Key Laboratory Project (No. 08JZ35)National Key Laboratory Open Project (No. 08KF02)Shaanxi Provincial Key Laboratory Research Project (No. 09JS022)Key Laboratory Project of Shaanxi Department of Education (No. 09JS023),Key Laboratory Project of Shaanxi Department of Education by Visiting Scholars (No. 09JS024)
文摘There are more and more research on active control in the application of civil structure.However,some problems such as the drive levers design,optimization and control law problems restricted its application development.In this work,we presented a kind of piezoelectric drive lever to convert pulling force to pressure without flexural moments based on characteristics of the piezoelectric pile,using the genetic algorithm to optimize the layout of the driving lever,which greatly improved the efficiency.Then an active control experiment on a three-layer intelligence space structure was carried out.The experimental data show that the intelligent structures can produce through active control greatly inhibitive effects on the correspondingly controlled modal displacement and acceleration.Spectral analysis shows that the corresponding modal damping coefficient can be improved to different degrees.
