A Novel Fuzzy RPID Controller for Multiarea AGC with IABC Optimization

Table 1

ITAE and FD performance indices for Case 1.

Change of parameters	IABC-FPID		PSO-FPID		GA-FPID
	ITAE	FD	ITAE	FD	ITAE	FD
25%	0.175	4.347	0.387	57.943	0.554	124.838
20%	0.176	4.366	0.404	62.682	0.571	131.142
15%	0.186	4.513	0.423	68.020	0.588	138.122
10%	0.182	4.581	0.443	74.032	0.605	145.601
5%	0.180	4.632	0.464	80.430	0.625	153.825
Nominal	0.176	4.60	0.484	87.795	0.647	162.919
−5%	0.205	5.085	0.506	95.854	0.671	173.010
−10%	0.181	4.730	0.527	105.787	0.740	184.776
−15%	0.163	4.633	0.559	118.408	0.737	196.615
−20%	0.181	4.964	0.605	130.338	0.816	211.230
−25%	0.166	4.844	0.670	146.116	0.853	226.947