GPIO-Based Robust Control of Nonlinear Uncertain Systems Under Time-Varying Disturbance With Application to DC–DC Converter
GPIO-Based Robust Control of Nonlinear Uncertain Systems Under Time-Varying Disturbance With Application to DC–DC Converter
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DOI：
10.1109/tcsii.2016.2548298
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
Jiankun Sun;Jun Yang;W. Zheng;Shihua Li
中科院分区：
文献类型：
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作者：
Jiankun Sun;Jun Yang;W. Zheng;Shihua Li
本文研究了一类具有时变扰动的非线性不确定系统的输出反馈鲁棒控制问题。为此，利用广义比例积分观测器(GPIO)和反馈控制方法进行扰动补偿和非线性不确定性抑制。结果表明，通过适当地分配可调比例增益，所提出的控制方法能够控制非线性不确定性，并通过补偿设计消除了由一般时变扰动引起的不良影响。给出了DC-DC降压转换器的应用设计实例，验证了该控制方法的可行性和有效性。
This brief considers the robust output-feedback control problem of a class of nonlinear uncertain systems subject to time-varying disturbances. For this purpose, a generalized proportional-integral observer (GPIO) together with a feedback domination approach is utilized for disturbance compensation and nonlinear uncertainty suppression. It is shown that the proposed control method can dominate the nonlinear uncertainties, by properly assigning a tunable scaling gain, and also remove the undesirable influences caused by a general class of time-varying disturbances through compensation design. An application design example of a dc-dc buck converter is presented to demonstrate the feasibility and efficacy of the proposed control approach.