Elitism
Elitism is used to keep the best solutions in every stage. Best ant
lion obtained is treated as elite, which is the fittest ant lion. Elite
should affect the ant lion in every stage (random movement). For
this every ant is assumed to associate with an ant lion by Roulette
wheel and elite which is given by Eq. (16).
Antt ¼ Rt
A
þ Rt
B
2
ð16Þ
RA, RB represents the random walk around the selected ant lion and
elite at tth iteration simultaneously.
The detailed algorithm is available in Ref. [22]. In this paper for
optimization purpose, population size (n) = 10, maximum number
of iterations (S) = 200 are considered. ALO algorithm tested for several
runs to obtain the optimum controller gains subjected to minimization
of cost function J.