Improved Results on Fuzzy 𝐻∞ Filter Design for T-S Fuzzy Systems

Table 3

Minimum index 𝛾 for different cases (𝑑₁ unknown and ℎ_𝑏=1.25).

ℎ𝑎	method	𝑑2=0.4	𝑑2=0.6	𝑑2=0.8	𝑑2≥1
0	[4]	0.44	2.77	∞	∞
	[37]	0.42	1.41	∞	∞
	[36]	0.32	0.49	0.84	1.14
	Our results	0.29	0.41	0.79	1.03
0.8	[37]	0.40	0.89	1.06	1.06
	[36]	0.32	0.40	0.40	0.40
	Our results	0.24	0.24	0.24	0.24
1.0	[37]	0.37	0.38	0.38	0.38
	[36]	0.28	0.28	0.28	0.28
	Our results	0.20	0.20	0.20	0.20