Robust chaos synchronization of four-dimensional energy resource systems subject to unmatched uncertainties

This paper investigates the robust chaos synchronization problem for the four-dimensional energy resource systems. Based on the sliding mode control (SMC) technique, this approach only uses a single controller to achieve chaos synchronization, which reduces the cost and complexity for synchronization control implementation. As expected, the error states can be driven to zero or into predictable bounds for matched and unmatched perturbations, respectively. Numerical simulation results, which fully coincide with theoretical results, are presented to demonstrate the obtained results.