Improvements of nonlinear dynamic modeling of hot-film MAF sensor

  • Xu K
  • Zhang J
  • Wang X
 et al. 
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The operating procedure of engine requires that the mass air flow (MAF) sensor can measure the pulsation air flow accurately. Therefore the MAF sensor must possess fast response speed. It is necessary to study the dynamic characteristic of the MAF sensor. Both the experimental equipments and method used by authors previously are improved to obtain the sensor response data accurately in this paper. The static and dynamic separable modeling method is adopted to build the uniform nonlinear dynamic model of the hot-film MAF sensor in the Hammerstein and Wiener forms, which can describe the large/small flow-rate and positive/negative step responses. The performance indexes are calculated by the actual and model responses. © 2008.

Author-supplied keywords

  • Hammerstein model
  • Hot-film mass air flow sensor
  • Nonlinear dynamic modeling
  • Performance index
  • Wiener model

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  • Ke Jun Xu

  • Jin Zhang

  • Xiao Fen Wang

  • Qin Teng

  • Jian Tan

  • Yuan Yuan Zhang

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