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Design of a DSP-Based PD-like Fuzzy Controller for Buck DC–DC Converters

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Abstract

This paper develops the DSP-based (digital signal processor) proportional-derivative-like (PD-like) fuzzy mechanism for a buck DC–DC converters. The computation complexity is one drawback for the fuzzy controller to be realized in real-time systems. To reduce the computational complexity of fuzzy mechanisms for the real-time DSP implementation, the PD-like fuzzy controller is proposed in which the input of the fuzzy controller is designed to be the linear combination of state variables. The stability of the buck DC–DC converters with PD-like fuzzy controller is discussed. Compared to a PD controller, experimental results indicate that the PD-like fuzzy controller achieves fast transient response and is robust to variations.

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Acknowledgments

This research was supported by the Ministry of Science and Technology (MOST) of Taiwan under the contract MOST 104-2221-E-130-011 and MOST 102-2221-E-197-024-MY3.

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Authors and Affiliations

  1. Department of Information and Telecommunications Engineering, Ming Chuan University, 5 De Ming Rd, 333, Taoyuan City, Gui Shan District, Taiwan

    Chia-Wen Chang

  2. Department of Electrical Engineering, National Ilan University, No.1, Sec. 1, Shennong Rd, Yilan City, Yilan County, Taiwan, ROC

    Chin-Wang Tao & Chen-Chia Chuang

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  1. Chia-Wen Chang
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  2. Chin-Wang Tao
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  3. Chen-Chia Chuang
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Correspondence to Chin-Wang Tao.

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Chang, CW., Tao, CW. & Chuang, CC. Design of a DSP-Based PD-like Fuzzy Controller for Buck DC–DC Converters. Int. J. Fuzzy Syst. 18, 971–979 (2016). https://doi.org/10.1007/s40815-016-0214-9

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  • DOI: https://doi.org/10.1007/s40815-016-0214-9

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