Table 2.

Membership function parameters of input (∆P) before and after the PSO/GA.

MF	P1	P2	P3	P4	P5	P6	P7
Before PSO/GA	− 1.000	− 0.670	− 0.340	0.000	0.3400	0.670	1.000
After PSO	− 0.500	− 0.373	− 0.166	− 0.125	0.0100	0.248	0.468
After GA	− 0.518	− 0.361	− 0.315	− 0.166	0.0373	0.212	0.423