From: Design of a 2-DOF-PID controller using an improved sine–cosine algorithm for load frequency control of a three-area system with nonlinearities
ISCA
SCA
ALO
SSA
PSO
Mean ± Std. Dev of Fitness Value
0.01433026 ± 0.002703
0.016443 ± 0.003433374
0.027976 ± 0.006409
0.021504 ± 0.00409
0.066433 ± 0.011953
Wilcoxon signed-rank test
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