Sterowanie uplastycznianiem preform w procesie wytwarzania pojemników z PET. Cz. II. Identyfikacja właściwości dynamicznych obiektu sterowania

P. Stączek; S. Płaska

Published : 2013-02-28

Vol. 58 No. 2 (2013)

Automated control of the preform reheating process in the manufacturing of poly(ethylene terephthalate) containers. Part II. Identification of the dynamical properties of controlled object

P. Stączek S. Płaska

Abstract

The paper is the second part of a series presenting the research work focused on the development of automatic temperature control system for poly(ethylene terephthalate) (PET) preforms in the reheating process. The methods and results of the identification of dynamical properties of the controlled object were described. The constructed dynamical models were presented and their consistency with the experimental data was verified. It was found that the processes which occur during reheating of performs are characterized by a relatively high inertia, which is the main reason of low quality of manual control by an operator. The results of the statistical quality assessment of an exemplary reheating process running in open-loop mode were presented. They show that it is necessary to develop an automated temperature control system for the process of heating the preform. An original concept of supplemental signal, as an indirect measure of thermal conditions inside the heating oven, which can increase a dynamical quality of automatic control, was discussed.

Keywords

uplastycznianie preform z PET ; modelowanie procesów ; statystyczna ocena jakości reheating of PET preforms ; modelling of processes ; statistical quality assessment

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Stączek, P., & Płaska, S. (2013). Automated control of the preform reheating process in the manufacturing of poly(ethylene terephthalate) containers. Part II. Identification of the dynamical properties of controlled object. Polimery, 58(2), 121–126. Retrieved from https://ichp.vot.pl/index.php/p/article/view/718

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