Bio-inspired heuristics for layer thickness optimization in multilayer piezoelectric transducer for broadband structures

被引:35
|
作者
Zameer, Aneela [1 ]
Majeed, Mohsin [2 ]
Mirza, Sikander M. [3 ]
Raja, Muhammad Asif Zahoor [4 ]
Khan, Asifullah [1 ]
Mirza, Nasir M. [3 ]
机构
[1] Pakistan Inst Engn & Appl Sci PIEAS, Dept Comp & Informat Sci, Islamabad 45650, Pakistan
[2] Pakistan Inst Engn & Appl Sci PIEAS, Dept Nucl Engn, Islamabad 45650, Pakistan
[3] Pakistan Inst Engn & Appl Sci PIEAS, Dept Phys & Appl Math, Islamabad 45650, Pakistan
[4] COMSATs Inst Informat Technol, Dept Elect Engn, Attock Campus, Attock, Pakistan
关键词
Genetic algorithms; Piezo-ceramic transducer; SONAR; Piezo-composites; Single crystal; Optimization; GENETIC ALGORITHM; COMPOSITE TRANSDUCERS; COMPUTING APPROACH; DESIGN; REDUCTION;
D O I
10.1007/s00500-017-3002-z
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Recently, enhancement of sensitivity of multilayered piezoelectric transducer and reduction in electrical impedance has gained importance due to development of stacked active element designs. This work presents mathematical optimization of layer thicknesses for broadband structures using piezo-composite with ceramic and single crystal as active material for underwater SONAR. The proposed technique employs bio-inspired heuristics-based genetic algorithms by invoking one-dimensional thickness model. Initially, optimization has been performed for monolithic materials in the stack for various acoustic media, and then, the results were validated by comparing with the published data. In the proposed scheme, optimization is carried out for two-phase 1-3 piezo-composite stacks with same active elements for better mechanical output and broadband structure while preserving the minima among first three harmonics under -3 and -6dB from the peaks in the frequency spectrum. The results show that the optimized single-crystal-based transducers have higher mechanical output and lower electrical impedance than their counterparts using piezo-ceramic in single-and two-phase materials. [GRAPHICS] .
引用
收藏
页码:3449 / 3463
页数:15
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