scholarly journals Multi-mode optimal fuzzy active vibration control of composite beams laminated with photostrictive actuators

2019 ◽  
Vol 32 (6) ◽  
pp. 1442-1450
Author(s):  
Mancang JIA ◽  
Shijie ZHENG ◽  
Rongbo HE
2003 ◽  
Vol 17 (08n09) ◽  
pp. 1744-1749 ◽  
Author(s):  
T. Aoki ◽  
A. Shimamoto

In this paper, epoxy matrix composite beams with embedded TiNi (SMA: Shape Memory Alloy) fiber are applied to enhance the strength and fracture toughness of the machinery components. It is also well known that SMA shows the remarkable changes of stiffness and damping ratio between martensite at lower temperature and austenite at high temperature. A shape recovery force is associated with inverse phase transformation of SMA. The effects of heating with current and pre-strain in TiNi fiber of SMA on vibration characteristics are experimentally investigated. The active vibration control is achieved by controlling the current and pre-strain.


This paper develops the authors’ earlier work on vibration control of multi-mode rotor-bearing systems. It shows how a single magnetic actuator can be used to estimate system characteristics and apply the optimum control force needed to minimize synchronous vibration. In the application considered here, a rotor is supported on oil-film bearings. The algorithm determines the optimum control force without prior knowledge of the bearing or rotor characteristics or the distribution of out-of-balance forces. A rig is described and used to illustrate the application of the theoretical work.


Author(s):  
Mihailo Lazarevic ◽  
Milan Cajic ◽  
Petar Mandic ◽  
Tomislav Sekara ◽  
HongGuang Sun ◽  
...  

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