Đánh giá hiệu quả bộ điều khiển trượt PID và hàm Hyperbolic Tangent cho bộ chuyển đổi Buck

Abstract

This article designs a sliding mode control based on PID sliding surface and
hyperbolic tangent function to voltage regulation for a Buck converter. This converter is
widely utilized in various applications such as solar chargers, electrical vehicles and space
exploration. The PID sliding surface is used to replace the conventional sliding surface.
The proposed controller is designed to improve performances and correct operation of the
Buck converter. The stability of the proposed controller is verified by using a Lyapunov
theorem to guarantee closed-loop stability. Simulation results in MATLAB/Simulink show
the effectiveness of the proposed method with the steady-state error converges to zero,
the rising time achieves 0.0055(s), the settling time is about 0.0082(s), the overshoot is
0.021(%).
Keywords: Buck converter, sliding mode control, PID, hyperbolic tangent function,
MATLAB/Simulink