Fig 1.
Chaotic attractor of system (2) with parameters a = 1, b = 1, c = 1 and initial conditions is depicted in.
(a) O–xy. (b) O–xz. (c) O–xu. (d) O–yz. (e) O–yu. (f) O–zu.
Fig 2.
The variation in the maximum Lyapunov exponent of the system as a function of the parameter b.
Fig 3.
The bifurcation behavior of the system as the parameter b varies.
Fig 4.
The temporal evolution of the state vector for the controlled system.
Fig 5.
The phase diagram of the controlled system in O–xyu space.
Fig 6.
The phase diagram of the controlled system in O–xyz space.
Fig 7.
The trend of state variables in the controlled system as time changes when d = −3.
Fig 8.
The phase portrait of the controlled system in space when d = −3.