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Design of a Fuzzy PI Controller to Guarantee Proportional Delay Differentiation on Web Servers

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Algorithmic Aspects in Information and Management (AAIM 2007)

Part of the book series: Lecture Notes in Computer Science ((LNISA,volume 4508))

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Abstract

Proportional Integral (PI) controller has attracted researchers in industrial control processes because of its simplicity and robust performance in a wide range of operating conditions. It has been used to provide proportional delay differentiation on web servers in previous work. However, PI controller cannot achieve satisfactory results due to (1) the web server’s non-linearity properties, and (2) the difficulty of building an accurate model for the web server. To address these issues, a nonlinear fuzzy PI controller is proposed in this paper, which has the advantage of fuzzy controller while maintaining the simplicity and robustness of PI controller. The proposed controller are self-tuned according to the periodical online performance measurement. The experimental results demonstrate that our fuzzy PI controller outperforms the PI controller in several aspects.

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Authors and Affiliations

  1. Department of Computer Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong

    Ka Ho Chan & Xiaowen Chu

Authors
  1. Ka Ho Chan
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  2. Xiaowen Chu
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Ming-Yang Kao Xiang-Yang Li

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Chan, K.H., Chu, X. (2007). Design of a Fuzzy PI Controller to Guarantee Proportional Delay Differentiation on Web Servers. In: Kao, MY., Li, XY. (eds) Algorithmic Aspects in Information and Management. AAIM 2007. Lecture Notes in Computer Science, vol 4508. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-72870-2_37

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  • DOI: https://doi.org/10.1007/978-3-540-72870-2_37

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-72868-9

  • Online ISBN: 978-3-540-72870-2

  • eBook Packages: Computer ScienceComputer Science (R0)

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