Fractional-Order Hidden Attractor Based on the Extended Liu System

Figure 13

The cost function for system (4): (a) the c–h section with a = 10, b = 40, c = 2.5,  = 5, h = 4, d = 20, and m = 16 and (b) the contour plot of the c–h section. The white square is the global minimum of the cost function.

(a)

(b)