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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >An Adaptive Estimator-Based Sliding Mode Control Scheme for Uncertain POESLL Converter
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An Adaptive Estimator-Based Sliding Mode Control Scheme for Uncertain POESLL Converter

机译：基于自适应估计的滑动模式控制方案，用于不确定POESLL转换器

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摘要

The positive output elementary super lift Luo (POESLL) converter is a dc-dc converter with a simple structure, which can increase input voltage with low ripples and high voltage gain. This study proposes an adaptive estimator-based sliding mode control scheme for the POSELL converter considering a reduced-order model of the converter with an unknown load and unknown input voltage. The proposed controller is composed of two parts: 1) an adaptive estimator, and 2) the sliding mode controller. At first, it is assumed that the state variables of the converter are available and adaptive estimator is proposed to facilitate the design of adaptive laws for estimating unknown parameters. Then, the sliding mode control input is designed based on the estimation of unknown parameters. Stability analysis of the proposed scheme is provided and sigma-modification type robust adaptive laws for estimating the uncertain parameters are derived based on the Lyapunov direct method. Furthermore, one modification term is proposed to satisfy the sliding condition. Finally, the proposed scheme is experimentally implemented in real time using STM32F407VG discrete signal processor board interfaced with MATLAB. In addition, in order to compare and highlight the effective performance of the proposed scheme, the proportional-integral (PI) controller is designed and implemented. Experimental results are presented for both of the proposed approach and the PI one. The results verify the ability of the proposed scheme for voltage regulation as well as its robustness against parameter uncertainties. Additionally, comparison results demonstrate that the proposed controller has superior performance than the PI controller.
机译：正输出基本超级升降机罗（POESLL）转换器是一种具有简单结构的DC-DC转换器，可以增加具有低纹波和高压增益的输入电压。本研究提出了一种基于自适应估计器的滑动模式控制方案，用于POSELL转换器考虑转换器的阶数模型，具有未知的负载和未知的输入电压。所提出的控制器由两部分：1）自适应估计器和2）的滑模控制器组成。首先，假设转换器的状态变量可用，并且提出了自适应估计器以便于设计用于估计未知参数的自适应规律。然后，根据未知参数的估计来设计滑动模式控制输入。提供了所提出的方案的稳定性分析，基于Lyapunov Direct方法导出了用于估计不确定参数的Sigma-Modification类型的鲁棒自适应定律。此外，提出了一种修改项以满足滑动条件。最后，使用与MATLAB接口的STM32F407VG离散信号处理器板实时地实时实施。此外，为了比较和突出所提出的方案的有效性能，设计和实施了比例整体（PI）控制器。介绍了两种方法和PI均呈现实验结果。结果验证了电压调节方案的能力以及对参数不确定性的鲁棒性。另外，比较结果表明，所提出的控制器的性能优于PI控制器。

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