Adaptive backstepping control with integral action for PWM buck DC-DC converters

The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, 2004. Proceedings. Pub Date : 2004-12-06 DOI:10.1080/02533839.2005.9671072

Shui-Chun Lin, Ching-Chih Tsai

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引用次数: 15

Abstract

Abstract This paper develops a novel control methodology for voltage regulation and implementation of a buck DC‐DC converter using a digital signal processor (DSP). Such a converter is modeled as a linear averaged state‐space system model with an adjustable load. An adaptive backstepping voltage regulator is presented based on the measurements of an output voltage and a capacitor current. An approximate averaged circuit model is derived in order to show that the fast and stable mode of the capacitor current can be ignored and the buck DC‐DC converter can be well approximated by the averaged circuit model. With the approximate averaged model, an adaptive backstepping control with integral action is proposed to regulate a stand‐alone buck DC‐DC converter. This proposed control method has been verified by computer simulation and implemented utilizing a stand‐alone digital signal processor (DSP) TMS320C542 from Texas Instruments. Experimental results show that the proposed control method is capable of giving satisfactory voltage regulation performance under a wide range of input voltage variations and load changes.

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PWM降压DC-DC变换器的积分自适应反步控制

摘要:本文开发了一种新的控制方法，用于电压调节和使用数字信号处理器(DSP)实现降压DC - DC转换器。这种变换器被建模为具有可调负载的线性平均状态空间系统模型。提出了一种基于输出电压和电容电流测量的自适应反步调压器。为了证明电容电流的快速稳定模式可以忽略，并且可以很好地近似于降压DC - DC变换器，推导了一个近似的平均电路模型。利用近似平均模型，提出了一种具有积分作用的自适应反步控制方法来调节独立降压型DC - DC变换器。所提出的控制方法已通过计算机仿真验证，并利用德州仪器的独立数字信号处理器(DSP) TMS320C542实现。实验结果表明，在较宽的输入电压变化和负载变化范围内，所提出的控制方法都能获得满意的电压调节性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, 2004. Proceedings.

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