A Unified Approach for the Identification of Wiener, Hammerstein, and Wiener–Hammerstein Models by Using WH-EA and Multistep Signals

Table 5

Ranking of estimated linear models for numerical example 2 (Hammerstein system). Models 4p, 3z/5p, and 4z/5p have been excluded since their MDL values were very high.

Structure
2p	4.57E − 2	4.565E − 2	2.32E − 2
1z/2p	3.29E − 2	3.29E − 2	1.68E − 2
3p	2.29E − 3	2.48E − 3	1.17E − 3
1z/3p	1.38E − 3	1.45E − 3	7.08E − 4
2z/3p	1.13E − 3	1.14E − 3	5.82E − 4
1z/4p	9.45E − 4	9.59E − 4	4.85E − 4
2z/4p	9.43E − 4	9.59E − 4	4.86E − 4
3z/4p	9.42E − 4	9.60E − 4	4.87E − 4
5p	4.26E − 2	4.28E − 2	2.19E − 2
2z/5p	9.46E − 4	9.59E − 4	4.89E − 4