Inverse modeling approach for parametric frequency domain analysis of an electrohydraulic system

Yongsoon Yoon, Zongxuan Sun, Heng Du

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

This paper presents parametric frequency domain analys.isf an electrohydraulic system, in particular, with respect to the hydraulic supply pressure. The supply pressure is a design parameter of significance such that it affects control bandwidth, load capability and system durability. However, intensive analysis on this parameter has not been reported yet due to the nonlinear dynamic features of an electrohydraulic system. In this paper, the inverse generalized frequency response functions are derived and used to conduct multi-dimensional Fourier analysis of the control input and to investigate its relation to the supply pressure. In addition, the hydraulic energy consumption is analyzed with respect to the supply pressure. The analysis reveals that the supply pressure is a critical design parameter that determines the degree of nonlinearity and trade-off between the control bandwidth and energy consumption.

Original languageEnglish (US)
Pages (from-to)412-425
Number of pages14
JournalMechanical Systems and Signal Processing
Volume121
DOIs
StatePublished - Apr 15 2019

Keywords

  • Electrohydraulic systems
  • Generalized frequency response function
  • Nonlinear frequency domain analysis
  • Parametric analysis

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