Distributed-parametric optimization approach for free-orientation of laminated shell structures with anisotropic materials

2019 ◽  
Vol 59 (6) ◽  
pp. 1915-1934 ◽  
Author(s):  
Yoshiaki Muramatsu ◽  
Masatoshi Shimoda
Keyword(s):  
Parametric Optimization ◽  
Anisotropic Materials ◽  
Shell Structures ◽  
Optimization Approach ◽  
Laminated Shell

scholarly journals A Parametric Optimization Approach to Mitigating the Urban Heat Island Effect: A Case Study in Ancona, Italy

2016 ◽  
Vol 8 (9) ◽  
pp. 896 ◽  
Author(s):  
Roberta Cocci Grifoni ◽  
Rosalba D’Onofrio ◽  
Massimo Sargolini ◽  
Mariano Pierantozzi
Keyword(s):  
Urban Heat Island ◽  
Parametric Optimization ◽  
Urban Heat Island Effect ◽  
Optimization Approach ◽  
Heat Island ◽  
Island Effect ◽  
Urban Heat

Parametric optimization-based design of PI controllers: application to a DC servomechanism

2019 ◽  
Vol 16 (3) ◽  
pp. 351-356
Author(s):  
Mohammad Tabatabaei
Keyword(s):  
Performance Index ◽  
Parametric Optimization ◽  
Experimental Tests ◽  
Lyapunov Equation ◽  
Optimization Approach ◽  
Content Type ◽  
Partial Derivatives ◽  
Pi Controllers ◽  
Dc Servomotor ◽  
First Time

Purpose This paper aims to propose an analytical method for designing parametric optimization-based proportional integral (PI) controllers. Design/methodology/approach In this method, a performance index containing the weighted summation of the integral square of the error and its derivative is minimized. This performance index is analytically calculated in terms of the controller parameters by solving a Lyapunov equation. Then partial derivatives of the performance index with respect to controller parameters are calculated. Equating these partial derivatives to zero gives explicit relations for the PI controller parameters. Findings The experimental tests on a DC servomotor system are given to demonstrate the efficiency of the proposed method. Originality/value This paper proposes an analytical parametric optimization approach for designing PI controllers for the first time. The application of the proposed method in a laboratory experiment is examined.

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