Research Article

An Adaptive Tracking Control of Fractional-Order Chaotic Systems with Uncertain System Parameter

Figure 2

(a) shows tracking errors between the fractional-order Lorenz system (3.2) with uncertain parameter and the reference signal . (b) shows the parameter error between uncertain parameter and the true value of the “unknown” parameter.
521549.fig.002a
(a)
521549.fig.002b
(b)