DocumentCode :
3290323
Title :
Modeling and experimental modal analysis of active truss structure
Author :
Sheng Yan ; Gong Jing
Author_Institution :
Sch. of Civil Eng., Yantai Univ., Yantai, China
fYear :
2011
fDate :
15-17 April 2011
Firstpage :
2338
Lastpage :
2342
Abstract :
In this paper, the dynamic model of an active truss structure configured two active piezoelectric members is established, and an experimental modal analysis is completed by means of d-SPACE control system. From the experimental results, it can be seen that the difference of modes of the active and passive trusses is remarkable. Under a proper control law, the frequencies, mode shapes and damping ratios of active truss are changed properly, because the modes of the members nearby two active piezoelectric members are restrained. It is worth mentioning that the lower-order damping ratios of active truss are larger than which of passive one. The larger damping ratio is favourable to structural vibration suppression, which is also verified by the comparison between the two transfer functions of active and passive truss. In a word, a well-configured active truss structure may improve its dynamic performances.
Keywords :
damping; modal analysis; piezoelectric actuators; structural engineering; supports; vibration control; active piezoelectric members; active truss structure; d-SPACE control system; dynamic model; lower-order damping; modal analysis; passive trusses; structural vibration suppression; Actuators; Damping; Electric potential; Equations; Force; Modal analysis; Shape; Active truss structure; Experimental modal analysis; Modeling; Piezoelectric stack actuator; Reduced-order LQR control approach;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
Type :
conf
DOI :
10.1109/ICEICE.2011.5778157
Filename :
5778157
Link To Document :
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