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Method for diagnosis of parts of nonlinear system

  • Xi'an Jiaotong University

Research output: Contribution to journalArticlepeer-review

Abstract

To analyze the fault in parts of nonlinear system, a model named Volterra nucleus fitting line was developed. We fit each order Volterra nucleus into a curve in some arithmetic, recognize the fitting line and separate each order based on the spring response. Then, the error can be identified according to its different effect on fitting line. It was imitated on a certain hydraulic amplifier used in aeroengine, the result is accurate and the calculation is simple. It is useful and may be applied for diagnosis of the fault or error in nonlinear system.

Original languageEnglish
Pages (from-to)354-356
Number of pages3
JournalTuijin Jishu/Journal of Propulsion Technology
Volume25
Issue number4
StatePublished - Aug 2004

Keywords

  • Fault diagnosis
  • Nonlinear system
  • Series
  • System identification

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