Fractional-Order Hidden Attractor Based on the Extended Liu System

Table 2

LEs of system (4) with different sampling and observation time for a = 10, b = 40, c = 2.5, k = 1, h = 4,  = 5, d = 20, and m = 20.

Initial condition	Observation time	Sampling time	LEs	Sum of LEs	Sign of the LEs
2.2, 2.4, 0.8, 0	500	0.02	1.5721, 0.0232, −0.0030, −13.5595	−11.9672	(+, +, −, −)
2.2, 2.4, 0.8, 0	2000	0.02	1.6096, 0.0098, −0.0018, −13.5789	−11.9613	(+, +, ≈ 0, −)
2.2, 2.4, 0.8, 0	5000	0.02	1.5961, 0.0161, −0.0004,−13.5799	11.9681	(+, +, 0, −)
2.2, 2.4, 0.8, 0	500	0.002	1.6254, 0.0268, −0.0028, −13.6814	−12.0320	(+, +, −, −)
2.2, 2.4, 0.8, 0	2000	0.002	1.6354, 0.0204, −0.0013, −13.6659	−12.0114	(+, +, ≈0, −)
2.2, 2.4, 0.8, 0	5000	0.002	1.6308, 0.0145, −0.0005,−13.6501	12.0053	(+, +, 0, −)