Figure 1From: Synchronisation of two different uncertain fractional-order chaotic systems with unknown parameters using a modified adaptive sliding-mode controllerState trajectories of drive system (25) and response system (25): (a) signals \(x_{1}\) and \(x_{2}\); (b) signals \(y_{1}\) and \(y_{2}\); (c) signals \(z_{1}\) and \(z_{2}\); (d) evolution of the errors \(e_{1}\), \(e _{2}\), \(e_{3}\) with respect to time tBack to article page