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- 저자 : Parampal Singh (검색결과 2 건)
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Design of Digital FIR Filter Using Hybrid SIMBO-GA Technique
Parampal Singh,Balwinder Singh Dhaliwal 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.11
The hybrid technique of Swine Influenza Model Based Optimization (SIMBO) and Genetic Algorithm (GA) for designing linear phase FIR low pass filter has been presented in this paper. The major difficulties using SIMBO algorithm in designing filter was premature convergence and unacceptable computational cost. To address this problem, a hybrid SIMBO-GA is proposed where GA is used to help SIMBO escape from local optima and prevent premature convergence. DEPSO, GLPSO DVN are adopted for comparison. In contrast with aforementioned algorithms it has been divulged that hybrid SIMBO-GA seems to be promising tool for optimum FIR filter design.
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Free vibration analysis of rotating tapered blades using Fourier-p superelement
Gunda, Jagadish Babu,Singh, Anuj Pratap,Chhabra, Parampal Singh,Ganguli, Ranjan Techno-Press 2007 Structural Engineering and Mechanics, An Int'l Jou Vol.27 No.2
A numerically efficient superelement is proposed as a low degree of freedom model for dynamic analysis of rotating tapered beams. The element uses a combination of polynomials and trigonometric functions as shape functions in what is also called the Fourier-p approach. Only a single element is needed to obtain good modal frequency prediction with the analysis and assembly time being considerably less than for conventional elements. The superelement also allows an easy incorporation of polynomial variations of mass and stiffness properties typically used to model helicopter and wind turbine blades. Comparable results are obtained using one superelement with only 14 degrees of freedom compared to 50 conventional finite elements with cubic shape functions with a total of 100 degrees of freedom for a rotating cantilever beam. Excellent agreement is also shown with results from the published literature for uniform and tapered beams with cantilever and hinged boundary conditions. The element developed in this work can be used to model rotating beam substructures as a part of complete finite element model of helicopters and wind turbines.
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