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An Integrated SPC-EPC Study Based on Nonparametric Transfer Function Model |
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PP: 759-768 |
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Author(s) |
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Xiaolei Zhang,
Zhen He,
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Abstract |
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| Traditional integrated SPC-EPC studies are based on linear transfer function models to describe the relationship between the input and output variables. However, these linear models are unable to model complex nonlinear input-output relationships, which are closer to real situations. In order to solve this problem, this paper presents an integrated SPC-EPC method based on a nonparametric transfer function model to describe the input-output relationship in the system. A controller and integrated SPC-EPC control system based on this model are built. The performance of this method for checking assignable causes resulting in trend and sustained shift is analyzed using examples and simulations. The results indicate that the integrated SPC-EPC control method based on nonparametric transfer function model is effective in controlling complex nonlinear systems, which have assignable causes resulting in trend or sustained shift. |
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