Interval Type-2 Recurrent Fuzzy Neural System for Nonlinear Systems Control Using Stable Simultaneous Perturbation Stochastic Approximation Algorithm

Table 4

The selected coefficients for Example 2.

		FNN	RFNN	IT2FNS-A	IT2RFNS-A	IT2RFNS-A
SPSA configuration coefficients	𝑎	0.01	0.01	0.01	0.01	optimal learning step length (3.29)
	𝛼	0.602	0.602	0.602	0.602
	𝐴	200	200	200	200
	𝑐	1	1	1	1	1
	𝛾	0.101	0.101	0.101	0.101	0.101
Neural network coefficient	rule number	12	12	4	4	4
Time (sec.)		20