DOI: 10.1155/2023/8853345 ISSN: 1875-9203

A Denoising Algorithm Combined with EMD and LMS for Precise Transmission Signal

Lei Song, Yongjun Cao, Yushan Zhou, Dongdong You
  • Mechanical Engineering
  • Mechanics of Materials
  • Geotechnical Engineering and Engineering Geology
  • Condensed Matter Physics
  • Civil and Structural Engineering

High accuracy and stability in mechanical transmission are crucial for various applications. In spite of the validity of mechanical enhancements, control algorithms’ fulfilment offers a cost-effective and efficient approach to mitigating the effects of noise signals. This study presents a hybrid algorithm that combines EMD with the least mean square (LMS) error to achieve online denoising. Within the algorithm, consecutive mean square error (CMSE) and the l2-norm metric are employed to assess the similarity between intrinsic mode functions (IMFs) and the original signal; therefore, IMFs are separated into three distinct components: noise components, information components, and mixed components. The denoised signal is obtained by partial reconstruction. Subsequently, the denoised signal is employed as a reference signal in the LMS algorithm, which is utilized for practical processing. The performance evaluation of the developed algorithm employs simulation and experimental signals. The obtained results illustrate that the presented approach achieves sufficient accuracy and stability.

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