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Trispectrum and correlation dimension analysis of magnetorheological damper in vibration screen

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Abstract

In order to improve the screening efficiency of vibrating screen and make vibration process smooth, a new type of magnetorheological (MR) damper was proposed. The signals of displacement in the vibration process during the test were collected. The trispectrum model of autoregressive (AR) time series was built and the correlation dimension was used to quantify the fractal characteristics during the vibration process. The result shows that, in different working conditions, trispectrum slices are applied to obtaining the information of non-Gaussian, nonlinear amplitude-frequency characteristics of the signal. Besides, there is correlation between the correlation dimension of vibration signal and trispectrum slices, which is very important to select the optimum working parameters of the MR damper and vibrating screen. And in the experimental conditions, it is found that when the working current of MR damper is 2 A and the rotation speed of vibration motor is 800 r/min, the vibration screen reaches its maximum screening efficiency.

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Authors and Affiliations

  1. College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, 361021, China

    Fu-sen Wu  (吴福森), Yi-jian Huang  (黄宜坚), Kai Huang  (黄凯) & Shan Xu  (徐姗)

Authors
  1. Fu-sen Wu  (吴福森)
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  2. Yi-jian Huang  (黄宜坚)
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  3. Kai Huang  (黄凯)
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  4. Shan Xu  (徐姗)
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Corresponding author

Correspondence to Yi-jian Huang  (黄宜坚).

Additional information

Foundation item: Project(50975098) supported by the National Natural Science Foundation of China; Project(2008HZ0002-1) supported by the Major Scientific and Technological Program of Fujian Province, China

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Wu, Fs., Huang, Yj., Huang, K. et al. Trispectrum and correlation dimension analysis of magnetorheological damper in vibration screen. J. Cent. South Univ. 19, 1832–1838 (2012). https://doi.org/10.1007/s11771-012-1216-x

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  • DOI: https://doi.org/10.1007/s11771-012-1216-x

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