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  • 标题:Accurate piecewise-affine time-discrete modeling of hysteresis-coupled system dynamics
  • 本地全文:下载
  • 作者:Alexander Schirrer ; Josef Mayrhofer ; Stefan Jakubek
  • 期刊名称:IFAC PapersOnLine
  • 印刷版ISSN:2405-8963
  • 出版年度:2018
  • 卷号:51
  • 期号:15
  • 页码:156-161
  • DOI:10.1016/j.ifacol.2018.09.109
  • 语种:English
  • 出版社:Elsevier
  • 摘要:AbstractA modeling approach to efficiently incorporate Prandtl-Ishlinskii-type hysteresis coupling behaviour into an otherwise linear-dynamic system is proposed. For a simplified elastic drive train with a nonlinear hysteretic coupling torque, the coupled full system dynamics is first formulated in continuous time. Then, a novel piecewise-affine representation is proposed that allows direct, exact time-discretization of the sensitive coupling dynamics, retaining the resonance properties accurately. Sensitivities of coupled-system measurements for variations in the coupled model parameters, including hysteresis component parameters, are expressed, and an output-error parameter identification problem is stated. The efficiency of the proposed model structure is validated by a model parameterized based on measurement data. These results provide a promising starting point for a fully coupled, realtime-capable system model architecture.
  • 关键词:KeywordsHysteresis modelPrandtl-Ishlinskiitime-discrete systemnonlinear dynamicssimulation
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