scholarly journals Design of Current Programmed Switching Converters Using Sliding-Mode Control Theory

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2034 ◽  
Author(s):  
Javier Calvente ◽  
Abdelali El Aroudi ◽  
Roberto Giral ◽  
Angel Cid-Pastor ◽  
Enric Vidal-Idiarte ◽  
...  
Keyword(s):  
Control Theory ◽  
Sliding Mode Control ◽  
Sliding Mode ◽  
Switching Converters ◽  
Dynamics Model ◽  
Large Signal ◽  
Mode Control ◽  
Voltage Compensator ◽  
Start Up ◽  
Sliding Mode Dynamics

This paper presents a comprehensive approach to analyze and design the voltage and current loops of switching DC-DC converters by using sliding-mode control theory. The approach is interchangeably applied to switching converters under current-programmed control with both fixed and variable frequency modulation. An ideal sliding-mode dynamics model is then obtained together with its circuit schematic representation that can be used for designing the output voltage compensator, as well as to predict the large signal behavior such as during start-up and under large disturbances. Simulations and experimental measurements illustrate the theoretical approach for two different examples of switching converters.

Event-triggered-based adaptive sliding mode control for networked linear control systems

2022 ◽  
pp. 014233122110689
Author(s):  
Guiling Li ◽  
Chen Peng
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Linear Control Systems ◽  
Adaptive Sliding Mode Control ◽  
Reduced Order ◽  
Adaptive Sliding Mode ◽  
Mode Control ◽  
Mode Function ◽  
Sliding Mode Dynamics ◽  
Event Triggered

This paper investigates the robust stabilization of the adaptive sliding mode control for a class of linear systems subjected to external disturbance via event-triggered communication (ETC) scheme. First, in order to reduce the bandwidth utilization, a discrete ETC scheme is proposed and the networked sliding mode function is derived using the ETC scheme. Based on the derived sliding mode function, a reduced-order networked sliding mode dynamics with communication delay is established. Second, by constructing a Lyapunov–Krasovskii functional (LKF), asymptotic stability and stabilization criteria of the reduced-order sliding mode dynamics are given in the form of linear matrix inequalities. According to the stabilization result, a novel event-triggered-based adaptive sliding mode controller is designed while guaranteeing the reachability of the sliding surface. Finally, simulation results illustrate the effectiveness and merit of the developed method.

scholarly journals Discrete Sliding Mode Control Strategy for Start-Up and Steady-State of Boost Converter

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2990
Author(s):  
Yang ◽  
Liao
Keyword(s):  
Steady State ◽  
Sliding Mode Control ◽  
Control Strategy ◽  
Sliding Mode ◽  
Boost Converter ◽  
Lyapunov Theory ◽  
Signal Model ◽  
Switching Surface ◽  
Mode Control ◽  
Start Up

Since the zero initial conditions of the boost converter are far from the target equilibrium point, the overshoot of the input current and the output voltage will cause energy loss during the start-up process when the converter adopts the commonly used small-signal model design control method. This paper presents a sliding mode control strategy that combines two switching surfaces. One switching surface based on the large-signal model is employed for the start-up to minimize inrush current and voltage overshoot. The stability of this strategy is verified by Lyapunov theory and simulation. Once the converter reaches the steady-state, the other switching surface with PI compensation of voltage error is employed to improve the robustness. The latter switching surface, which is adopted to regulate the voltage, can not only suppress the perturbation of input voltage and load, but also achieve a better dynamic process and a zero steady-state error. Furthermore, the discrete sliding mode controller is implemented by digital signal processor (DSP). Finally, the results of simulation, experiment and theoretical analysis are consistent.

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