Restricted accessResearch articleFirst published online 2025
Adaptive nonsingular barrier function-based terminal sliding mode control for disturbed nonlinear systems with application to chaos-based secure communication
The adaptive finite-time sliding-mode control (SMC) scheme with a nonsingular barrier function is presented in this paper as a novel approach to path tracking and stabilization in nonlinear systems that are subject to external disturbances. In order to achieve rapid convergence in finite time without the singularities that are commonly associated with terminal sliding-mode approaches, the control strategy incorporates a nonsingular terminal sliding surface that was designed under Hurwitz stability conditions. Without overestimating control gains or requiring prior knowledge of the disturbance boundaries, robustness is improved by using an adaptive barrier function. A secure chaotic communication system employing controlled chaotic dynamics for data encryption and transmission is created in order to verify the efficacy and applicability of the suggested approach. The method’s potential in advanced control and soft computing applications is highlighted by extensive simulation results that show it can achieve high-accuracy tracking, effective disturbance rejection, low chatter behavior, and secure information encryption.
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