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Designing a multivariate-multistage quality control system using artificial neural networks

Akhavan Niaki, T ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1080/00207540701504348
  3. Publisher: 2009
  4. Abstract:
  5. In most real-world manufacturing systems, the production of goods comprises several autocorrelated stages and the quality characteristics of the goods at each stage are correlated random variables. This paper addresses the problem of monitoring a multivariate-multistage manufacturing process and diagnoses the possible causes of out-of-control signals. To achieve this purpose using multivariate time series models, first a model for the autocorrelated data coming from multivariate-multistage processes is developed. Then, a single neural network is designed, trained and employed to control and classify mean shifts in quality characteristics of all stages. In-control and out-of-control average run lengths and correct classification ratio indices have been chosen to investigate the performance of the designed network. The results of a simulation study show that the network is capable of detecting both in-control and out-of-control signals appropriately
  6. Keywords:
  7. Backpropagation ; Cluster analysis ; Control systems ; Control theory ; Customer satisfaction ; Neural networks ; Process engineering ; Quality assurance ; Quality function deployment ; Random variables ; Robustness (control systems) ; Time series analysis ; Total quality management ; Vegetation ; Artificial neural networks ; Autocorrelated datums ; Average Run lengths ; Control signals ; Correct classification ratios ; Manufacturing systems ; Mean shifts ; Multistage manufacturing processes ; Multistage processes ; Multistage quality control ; Multivariate quality control ; Multivariate time series ; Paper addresses ; Quality characteristics ; Quality control systems ; Simulation studies ; Quality control
  8. Source: International Journal of Production Research ; Volume 47, Issue 1 , 2009 , Pages 251-271 ; 00207543 (ISSN)
  9. URL: https://www.tandfonline.com/doi/full/10.1080/00207540701504348