Table 3.

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

MF	P8	P9	P10	P11	P12	P13	P14
Before PSO/GA	− 1.000	0.670	− 0.340	0.0000	0.340	0.670	1.000
After PSO	− 0.704	− 0.493	− 0.166	0.0000	0.166	0.293	0.349
After GA	− 0.948	− 0.389	− 0.166	− 0.0001	0.154	0.300	0.450