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<p>Active disturbance rejection control (ADRC) exhibits notable resilience against both internal and external disturbances. Its straightforward implementation further enhances its appeal for controlling a diverse class of systems. However, the high-gain nature of the extended state observer, which is the core of ADRC, may degrade performance when faced with high-frequency sensing noise—a common challenge in real-world settings. This article addresses this issue through a specifically placed and particularly designed low-pass filter while preserving the ease of implementation characteristic of ADRC. This article proposes a simple tuning method for the filter-controller structure to improve the scheme’s design process. Theoretical results simplify the design process based on the Routh–Hurwitz criterion such that the additional low-pass filter does not affect the closed-loop stability. The maximum power point tracking task on a wind turbine—a nonlinear system requiring the measurement of inherently noisy signals, such as electrical currents—is addressed to illustrate the design process of the proposed approach. Real-time experiments on a laboratory platform emulating a Permanent Magnet Synchronous Generator-based wind turbine endorse the enhanced scheme’s effectiveness in mitigating high-frequency sensing noise.</p>

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Sensing-noise reduction in active disturbance rejection controllers: a permanent magnet synchronous generator-based wind turbine example

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月12日

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  • Mario Andrés Aguilar-Orduña,
  • Brian Camilo Gómez-León,
  • Hebertt Sira-Ramírez,
  • Rubén Alejandro Garrido-Moctezuma

摘要

Active disturbance rejection control (ADRC) exhibits notable resilience against both internal and external disturbances. Its straightforward implementation further enhances its appeal for controlling a diverse class of systems. However, the high-gain nature of the extended state observer, which is the core of ADRC, may degrade performance when faced with high-frequency sensing noise—a common challenge in real-world settings. This article addresses this issue through a specifically placed and particularly designed low-pass filter while preserving the ease of implementation characteristic of ADRC. This article proposes a simple tuning method for the filter-controller structure to improve the scheme’s design process. Theoretical results simplify the design process based on the Routh–Hurwitz criterion such that the additional low-pass filter does not affect the closed-loop stability. The maximum power point tracking task on a wind turbine—a nonlinear system requiring the measurement of inherently noisy signals, such as electrical currents—is addressed to illustrate the design process of the proposed approach. Real-time experiments on a laboratory platform emulating a Permanent Magnet Synchronous Generator-based wind turbine endorse the enhanced scheme’s effectiveness in mitigating high-frequency sensing noise.