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A nonlinear dynamic model of a servo‐pump controlled injection molding machine
Author(s) -
Wei JongHwei,
Chang ChianChiunn,
Chiu ChengPing
Publication year - 1994
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760341103
Subject(s) - injection molding machine , nonlinear system , control theory (sociology) , servo , nozzle , materials science , flow (mathematics) , computer science , control engineering , mechanical engineering , mechanics , engineering , physics , artificial intelligence , composite material , mold , control (management) , quantum mechanics
Abstract This paper presents the development of a nonlinear mathematical model and a microcomputer controlled servo‐pump system for the study of the dynamics of a servo‐pump controlled injection molding machine (IMM). The model is formulated by the Reynolds transport theorem which is applied to describe the polymer flow dynamics in the nozzle. The comparison between the simulation results and experimental investigations indicated that the nonlinear dynamic model is a reasonable representation of a servo‐pump controlled IMM. The output flow rate and working pressure of a servo‐pump controlled IMM can be reasonably represented by the nonlinear model when the acrylonitrile‐butadiene‐styrene (ABS) is injected.