Identification of Continuous-time Hammerstein System using Sine Cosine Algorithm

Author(s):  
E. F. Junis ◽  
J. J. Jui ◽  
M. H. Suid ◽  
M. A. Ahmad
2021 ◽  
Vol 21 (3) ◽  
pp. 160-174
Author(s):  
Julakha Jahan Jui ◽  
Mohd Ashraf Ahmad ◽  
Mohamed Sultan Mohamed Ali ◽  
Mohd Anwar Zawawi ◽  
Mohd Falfazli Mat Jusof

Abstract This paper presents the identification of the ThermoElectric Cooler (TEC) plant using a hybrid method of Multi-Verse Optimizer with Sine Cosine Algorithm (hMVOSCA) based on continuous-time Hammerstein model. These modifications are mainly for escaping from local minima and for making the balance between exploration and exploitation. In the Hammerstein model identification a continuous-time linear system is used and the hMVOSCA based method is used to tune the coefficients of both the Hammerstein model subsystems (linear and nonlinear) such that the error between the estimated output and the actual output is reduced. The efficiency of the proposed method is evaluated based on the convergence curve, parameter estimation error, bode plot, function plot, and Wilcoxon’s rank test. The experimental findings show that the hMVOSCA can produce a Hammerstein system that generates an estimated output like the actual TEC output. Moreover, the identified outputs also show that the hMVOSCA outperforms other popular metaheuristic algorithms.


2020 ◽  
Vol 1529 ◽  
pp. 042090
Author(s):  
Julakha Jahan Jui ◽  
Mohd Helmi Suid ◽  
Mohd Riduwan Ghazali ◽  
Mohd Ashraf Ahmad ◽  
Mohd Zaidi Mohd Tumari

2007 ◽  
Vol 44 (02) ◽  
pp. 285-294 ◽  
Author(s):  
Qihe Tang

We study the tail behavior of discounted aggregate claims in a continuous-time renewal model. For the case of Pareto-type claims, we establish a tail asymptotic formula, which holds uniformly in time.


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