DocumentCode :
2556482
Title :
Learning control of an electro-hydraulic injection molding machine with smoothed fill-to-pack transition
Author :
Zheng, Danian ; Alleyne, Andrew
Author_Institution :
Dept. of Mech. & Ind. Eng., Illinois Univ., Urbana, IL, USA
Volume :
4
fYear :
2000
fDate :
2000
Firstpage :
2558
Abstract :
A learning control scheme with a bumpless transfer between the filling phase and packing phase is designed and tested on an experimental injection molding machine (IMM). Building upon the learning scheme tested in Havlicsek and Alleyne (1999), the current control system takes into account both of the two learning control phases and initiates a smooth transition between them. A high gain bumpless transfer scheme is described and tested successfully. The experimental results presented show much better performance for the transition between the two learning controllers. Under the current scheme, when the second (packing phase) controller takes over, the IMM system has a significantly smoother control signal and pressure transient than the scheme presented in Havlicsek and Alleyne, (1999). The current scheme partially resolves the problem of the fill-to-pack transition in IMM control
Keywords :
chemical technology; control nonlinearities; electrohydraulic control equipment; learning systems; moulding; process control; electro-hydraulic injection molding machine; filling phase; high gain bumpless transfer scheme; learning control; packing phase; smoothed fill-to-pack transition; Buildings; Closed loop systems; Control systems; Current control; Filling; Injection molding; Machine learning; Pressure control; Signal resolution; System testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
ISSN :
0743-1619
Print_ISBN :
0-7803-5519-9
Type :
conf
DOI :
10.1109/ACC.2000.878669
Filename :
878669
Link To Document :
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