Dynamic behavior and vibration control of a tensegrity structure

被引:112
作者
Ali, N. Bel Hadj [1 ]
Smith, I. F. C. [1 ]
机构
[1] Ecole Polytech Fed Lausanne, Appl Comp & Mech Lab, ENAC IS IMAC, Stn 18, CH-1015 Lausanne, Switzerland
基金
瑞士国家科学基金会;
关键词
Tensegrity; Structural dynamics; Vibration control; Multi-objective optimization; ACTIVE CONTROL; FRAMEWORKS; SELECTION;
D O I
10.1016/j.ijsolstr.2010.01.012
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Tensegrities are lightweight space reticulated structures composed of cables and struts. Stability is provided by the self-stress state between tensioned and compressed elements. Tensegrity systems have in general low structural damping, leading to challenges with respect to dynamic loading. This paper describes dynamic behavior and vibration control of a full-scale active tensegrity structure. Laboratory testing and numerical simulations confirmed that control of the self-stress influences the dynamic behavior. A multi-objective vibration control strategy is proposed. Vibration control is carried out by modifying the self-stress level of the structure through small movement of active struts in order to shift the natural frequencies away from excitation. The PGSL stochastic search algorithm successfully identifies good control commands enabling reduction of structural response to acceptable levels at minimum control cost. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1285 / 1296
页数:12
相关论文
共 43 条
[1]  
ADAM B, 2007, THESIS ECOLE POLYTEC
[2]   Self-diagnosis and self-repair of an active tensegrity structure [J].
Adam, Bernard ;
Smith, Ian F. C. .
JOURNAL OF STRUCTURAL ENGINEERING-ASCE, 2007, 133 (12) :1752-1761
[3]   Tensegrity active control: Multiobjective approach [J].
Adam, Bernard ;
Smith, Ian F. C. .
JOURNAL OF COMPUTING IN CIVIL ENGINEERING, 2007, 21 (01) :3-10
[4]  
[Anonymous], 2007, EVOLUTIONARY ALGORIT
[5]  
[Anonymous], SPIE 11 ANN INT S SM
[6]  
[Anonymous], 2004, J INT ASS SHELL SPAT
[7]  
[Anonymous], 2008, 6 INT C COMPUTATION
[8]   Kinematic, static, and dynamic analysis of a spatial three-degree-of-freedom tensegrity mechanism [J].
Arsenault, Marc ;
Gosselin, Clement M. .
JOURNAL OF MECHANICAL DESIGN, 2006, 128 (05) :1061-1069
[9]  
Barnes M. R., 1999, International Journal of Space Structures, V14, P89, DOI [10.1260/0266351991494722, DOI 10.1260/0266351991494722]
[10]   Modal identification of output-only systems using frequency domain decomposition [J].
Brincker, R ;
Zhang, LM ;
Andersen, P .
SMART MATERIALS & STRUCTURES, 2001, 10 (03) :441-445