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
2.76455 ± 0.030228369
3.303025 ± 0.175311
3.043113 ± 0.226013
2.9268 ± 0.339249
4.0440 ± 0.639504
Wilcoxon signed-rank test results
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