Dynamics and performance modeling of multi-stage manufacturing systems using nonlinear stochastic differential equations

Utkarsh Mittal, Hui Yang, Satish T.S. Bukkapatnam, Leandro G. Barajas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Modern manufacturing enterprises have invested in a variety of sensors and IT infrastructure to increase plant floor information visibility. This offers an unprecedented opportunity to track performances of manufacturing systems from a dynamic, as opposed to static, sense. Conventional static models are inadequate to model manufacturing system performance variations in real-time from these large non-stationary data sources. This paper addresses a physics-based approach to model the performance outputs (e.g., throughputs, uptimes, and yield rates) from a multi-stage manufacturing system. Unlike previous methods, degradation and repair dynamics that influence downtime distributions in such manufacturing systems are explicitly considered. Sigmoid function theory is used to remove discontinuities in the models. The resulting model is validated using real-world datasets acquired from the General Motor's assembly lines, and it is found to capture dynamic s of downtime better than traditional exponential distribution based simulation models.

Original languageEnglish (US)
Title of host publication4th IEEE Conference on Automation Science and Engineering, CASE 2008
Pages498-503
Number of pages6
DOIs
StatePublished - Nov 3 2008
Event4th IEEE Conference on Automation Science and Engineering, CASE 2008 - Washington, DC, United States
Duration: Aug 23 2008Aug 26 2008

Publication series

Name4th IEEE Conference on Automation Science and Engineering, CASE 2008

Other

Other4th IEEE Conference on Automation Science and Engineering, CASE 2008
Country/TerritoryUnited States
CityWashington, DC
Period8/23/088/26/08

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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