A new four-dimensional chaotic system with first Lyapunov exponent of about 22, hyperbolic curve and circular paraboloid types of equilibria and its switching synchronization by an adaptive global integral sliding mode control
Prakash Singh Jay1, †, Krishna Roy Binoy1, Wei Zhouchao2
       

(color online) Synchronization errors in the presence of disturbances between the states of master (41), (45) and slave (42), (46) systems by using: (a)–(c) the controller of Ref. [54] and (d)–(f) the controller designed in the present work.