Cascade sliding mode control based on extended state observer method for a DC-DC buck converter

Wang, Shuwang; Li, Juan; Zhang, Luyao; Li, Shenquan

doi:10.23919/ccc52363.2021.9549771

Cited by 2 publications

(5 citation statements)

References 25 publications

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“…It also implies that disturbance rejection function can be linear when n = 2. Therefore, the controller ( 19) can be simplified as following equation (21) along f(e 1 ) = c 1 e 1 , f(s 1 ) = s 1 , which…”

Section: Cascade Smcmentioning

confidence: 99%

“…Compared with LCSMC equation (21), the NLCSMC has a nonlinear section to improve the system dynamics. Different from the conventional SMC which uses switching function eliminate disturbance and generate chattering at the same time, the secondorder CSMC can attenuate disturbance without using switching function.…”

Section: Cascade Smcmentioning

confidence: 99%

“…The purpose of this section is to design an observer for _ e 1 and D that cannot be obtained directly in equation (21). Compared with nonlinear extended state observer (NLESO), linear extended state observer (LESO) has the advantage of easy parameters tuning.…”

Section: Esomentioning

confidence: 99%

“…20 To simplify the controller design, a linear function has been applied to construct the disturbance rejection function by analyzing the structure of the CSMC. 21 In this paper, a novel nonlinear function will be developed to achieve the finite time convergence of SM surface in CSMC method. This paper will explain the design process in detail and propose a novel nonlinear CSMC controller.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear cascade sliding mode control based on extended state observer method for a DC-DC buck converter: Design and hardware experimentation

Wang

Zhang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part I:

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A nonlinear cascade sliding mode control (NLCSMC) based on extended state observer method is developed for a DC-DC buck converter in the presence of matched disturbances and uncertainties in this paper. First, all the matched and mismatched disturbances in DC-DC buck converter have been defined as a uniformed matched disturbance, including load and input voltage variations. Second, extended state observer is used to estimate the state variables and disturbances of the system that cannot be obtained directly. Third, a novel nonlinear function-based cascade sliding mode control method is proposed to achieve better convergence and disturbance rejection ability. Subsequently, the detailed convergence analysis of the closed-loop system is derived based on Lyapunov tools. Finally, simulation and experimental results are carried out to illustrate the nonlinear cascade sliding mode control based on extended state observer method (nonlinear cascade sliding mode control - extended state observer) has better control performance than linear cascade sliding mode control based on extended state observer method.

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Section: Cascade Smcmentioning

confidence: 99%

Section: Cascade Smcmentioning

confidence: 99%

Section: Esomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear cascade sliding mode control based on extended state observer method for a DC-DC buck converter: Design and hardware experimentation

Wang

Zhang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part I:

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show abstract

“…This problem can only be solved if studying new nonlinear control methods. Such as sliding mode control [2][3], dynamic surface control [4] and other nonlinear control methods have been developed and employed to meet the growing demand for power converters. For switching power supply converter, an accurate linearization method based on state feedback is proposed [5].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Dynamic Surface Control of Buck Converter Based on Energy Storage System

Yang

Guan

et al. 2023

J. Phys.: Conf. Ser.

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To enhance the stability of the Buck converter and the capacity of resisting disturbance of the controller and converter, come up with an adaptive dynamic surface control strategy based on voltage mode control, which improves the ability of the energy storage system to stabilize the output voltage when the input voltage or load changes. The Radial Basis Function (RBF) neural network is combined with the finite covering lemma to approximate the unknown nonlinear functions with time-delay in the system. The error conversion and performance functions are adopted to ensure the tracking performance index. The adaptive dynamic surface controller is applied to ensure the stability of the output voltage of the system when the external conditions change. The proposed control method is tested on the hardware-in-the-loop (HIL) experimental platform. The consequence illustrate that the designed controller is feasible and has good voltage stability performance.

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Cascade sliding mode control based on extended state observer method for a DC-DC buck converter

Cited by 2 publications

References 25 publications

Nonlinear cascade sliding mode control based on extended state observer method for a DC-DC buck converter: Design and hardware experimentation

Nonlinear cascade sliding mode control based on extended state observer method for a DC-DC buck converter: Design and hardware experimentation

Adaptive Dynamic Surface Control of Buck Converter Based on Energy Storage System

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