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Implementation of a fuzzy controller for DC-DC converters using an inexpensive 8-b microcontroller

机译:使用便宜的8-b微控制器实现DC-DC转换器的模糊控制器

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This paper presents an implementation of a fuzzy controller for DC-DC power converters using an inexpensive 8-bit microcontroller. An "on-chip" analog-to-digital (A/D) converter and PWM generator eliminate the external components needed to perform these functions. Implementation issues include limited on-chip program memory of 2 kB, unsigned integer arithmetic and computational delay. The duty cycle for the DC-DC power converter can only be updated every eight switching cycles because of the time required for the A/D conversion and the control calculations. However, it is demonstrated here that stable responses can be obtained for both buck and boost power converters under these conditions. Another important result is that the same microcontroller code, without any modifications, can control both power converters because their behavior can be described by the same set of linguistic rules. The contribution shows that a nonlinear controller such as fuzzy logic can be inexpensively implemented with microcontroller technology.
机译:本文介绍了一种使用便宜的8位微控制器的DC-DC电源转换器的模糊控制器的实现。 “片上”模数(A / D)转换器和PWM发生器消除了执行这些功能所需的外部组件。实现问题包括有限的2 kB片上程序存储器,无符号整数算术和计算延迟。由于A / D转换和控制计算所需的时间,DC-DC电源转换器的占空比只能每八个开关周期更新一次。但是,这里证明了在这些条件下,降压和升压电源转换器都可以获得稳定的响应。另一个重要的结果是,相同的微控制器代码无需进行任何修改即可控制两个电源转换器,因为它们的行为可以用相同的语言规则集来描述。该贡献表明,可以使用微控制器技术廉价地实现诸如模糊逻辑之类的非线性控制器。

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