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Chua’s circuit is the classic chaotic system and the most widely used in serval areas since it offers many advantages in the case of secure communication. Developing an accurate chaos control strategy is one of the most challenging works in synchronization or suppression or secure communication plant for the chaotic behavior. To avoid chaotic behavior in terms of synchronization or suppression. this study presents a chaos control strategy for Chua’s circuit. A new application of super twisting algorithm (STC) based on sliding mode control (SMC) is applied aiming to eliminate or synchronize the chaotic behavior. Therefore, the designed control scheme is robust against the system uncertainty with a good regulation tracking task. Using the Lyapunov stability, the property of asymptotical stability is verified. The whole of the system including the (control strategy, and Chua’s circuit) is implemented under a suitable test setup based on dSpace1104 to validate the effectiveness of our proposed control scheme.

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SummaryIn this paper, a new technique for open‐circuit switch fault (OCF) detection and reconfiguration of an interleaved boost converter (IBC) is proposed. Harmonic selection calculation (HSC) is elaborated from the frequency domain analysis using the Fourier transformer of the input current. The symmetric phase shifting of the inductor currents has induced some characteristics in the input current that make the HSC an interesting tool for the fault detection process of an OCF. The HSC consists of selecting the adequate harmonic for detecting and isolating an OCF with a thresholding strategy. The proposed approach can handle different operation modes such as CCM, DCM, load change, and parameter change. Besides the short‐time detection (less than one cycle), this technique is based on the measurement of the only used inductor currents, which means that it does not require any additional hardware. The effectiveness of the proposed HSC technique is verified by simulation and experimental tests for three interleaved boost converters under different situations, such as load change, conduction mode change, and OCF mode. The obtained results show the validity of the proposed technique.