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UID:pretalx-amfc2026-E87ZG7@modelica.simtek.cc
DTSTART;TZID=CST:20260922T094500
DTEND;TZID=CST:20260922T101500
DESCRIPTION:The Xu’s Modeling Method\, originating from foundational rese
 arch for the HyPneu software at Oklahoma State University in the 1980s\, p
 rovides an intuitive framework for hydraulic system modeling. Its core pre
 mise is to align the modeling process with engineers’ cognitive paradigm
 s. A key breakthrough was its algorithmic solution to Differential-Algebra
 ic Equation (DAE) problems\, validated through the PERSIM software develop
 ed under China’s “Seventh Five-Year Plan” national project. The meth
 od enables model construction directly from hydraulic schematics by applyi
 ng Kirchhoff’s law at junctions\, reducing all components to two fundame
 ntal sub-models: hydraulic resistance (throttle) and hydraulic capacitance
  (cylinder). This yields an implicit state equation (a DAE). The Xu’s Al
 gorithm solves this via a unified dynamic-static simulation approach\, usi
 ng the Newton-Raphson method iteratively to compute static states and dyna
 mic derivatives over time steps. In the Digital Twin era\, the method find
 s new relevance. Its implicit state equation serves as a potential mechani
 sm model for digital twins\, contingent on solving the inverse problem—a
  current research focus that may incorporate Artificial Intelligence. Addi
 tionally\, the method offers a theoretical basis for creating “Hydraulic
  Intelligent Components\,” guiding the design of simpler\, more efficien
 t constructions from first principles. This positions it as an advancement
  over the classic Hydraulic Resistance Systematic Theory. Practically\, th
 e method is being applied to develop dedicated simulation and digital twin
  software for a hydraulic robot system manufactured in Shenzhen\, demonstr
 ating its ongoing industrial applicability.
DTSTAMP:20261004T074412Z
LOCATION:Main hall (R1016)
SUMMARY:Xu's Modeling Method: A Foundation for Hydraulic Digital Twins and 
 Intelligent Components - Yangzeng Xu
URL:https://modelica.simtek.cc/amfc2026/talk/E87ZG7/
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