Optimal shape control of thin plate using laminated piezoelectric actuators with genetic algorithm

Author(s):  
Yang Yu ◽  
Xi-nong Zhang ◽  
Shi-lin Xie
2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Zhanxi Wang ◽  
Xiansheng Qin ◽  
Shunqi Zhang ◽  
Jing Bai ◽  
Jing Li ◽  
...  

Shape variation induced by mismachining tolerance, humidity and temperature of the working environment, material wear and aging, and unknown external load disturbances have a relatively large influence on the dynamic shape of a mechanical structure. When integrating piezoelectric elements into the main mechanical structure, active control of the structural shape is realized by utilizing the inverse piezoelectric effect. This paper presents a mathematical model regarding piezoelectric intelligent structure shape control. We also applied a genetic algorithm, and given a piezoelectric intelligent cantilever plate with both ends affected by a certain load, optimal shape control results of piezoelectric materials were analyzed from different perspectives (precision reference or cost reference). The mathematical model and results indicate that, by optimizing a certain number of piezoelectric actuators, high-precision active shape control can be realized.


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