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首页> 外文期刊>Control Engineering Practice >Robust control of mismatched buck DC-DC converters by PWM-based sliding mode control schemes
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Robust control of mismatched buck DC-DC converters by PWM-based sliding mode control schemes

机译：通过基于PWM的滑模控制方案对失配的buck DC-DC转换器进行鲁棒控制

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摘要

In this paper, two control methods are proposed to control mismatched dc-dc buck converters. In the first method, called Method I, a multiple surface sliding mode control is proposed to handle mismatched load uncertainty. A major problem associated with multiple surface sliding mode control viz. 'explosion of terms' is handled by a disturbance observer. Another method, Method II, based on simultaneous state and disturbance observer is proposed as a further improvement over Method I in terms of sensor requirement. The practical stability of the proposed schemes is proved. The performance of both the methods are assessed for regulation and tracking of output voltage under various uncertainties and is compared with a method based on extended state observer. It is shown by simulation and experimentation that the transient and steady state performance of both the controllers are satisfactory.
机译：在本文中，提出了两种控制方法来控制失配的dc-dc buck转换器。在第一种方法（称为方法I）中，提出了一种多表面滑模控制来处理不匹配的负载不确定性。与多表面滑动模式控制相关的主要问题。 “术语爆炸”由骚扰观察员处理。提出了一种基于状态和干扰观测器同时进行的方法II，作为对方法I的进一步改进，满足了传感器要求。证明了所提方案的实用稳定性。评估了这两种方法的性能，以便在各种不确定性下调节和跟踪输出电压，并将其与基于扩展状态观察器的方法进行比较。通过仿真和实验表明，两种控制器的瞬态和稳态性能均令人满意。

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