Robust anti-synchronization of uncertain chaotic systems based on multiple-kernel least squares support vector machine modeling

In this paper, we propose a robust anti-synchronization scheme based on multiple-kernel least squares support vector machine (MK-LSSVM) modeling for two uncertain chaotic systems. The multiple-kernel regression, which is a linear combination of basic kernels, is designed to approximate system uncertainties by constructing a multiple-kernel Lagrangian function and computing the corresponding regression parameters. Then, a robust feedback control based on MK-LSSVM modeling is presented and an improved update law is employed to estimate the unknown bound of the approximation error. The proposed control scheme can guarantee the asymptotic convergence of the anti-synchronization errors in the presence of system uncertainties and external disturbances. Numerical examples are provided to show the effectiveness of the proposed method.

► Model uncertainty of the system is approximated by multiple-kernel LSSVM. ► Approximation errors and disturbances are compensated in the controller design. ► Asymptotical anti-synchronization is achieved with model uncertainty and disturbances.