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Optimal anticipatory control of ram velocity in injection molding
Author(s) -
Pandelidis I. O.,
Agrawal A. R.
Publication year - 1988
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.760280305
Subject(s) - context (archaeology) , controller (irrigation) , weighting , control theory (sociology) , computer science , pid controller , optimal control , noise (video) , selection (genetic algorithm) , control (management) , control engineering , engineering , temperature control , mathematics , mathematical optimization , artificial intelligence , acoustics , paleontology , agronomy , image (mathematics) , biology , physics
This paper discusses a computer control system for ram velocity of an injection molding machine using optimal state feedback based on the linear quadratic control theory. A new approach for the selection of appropriate weighting matrices is presented in this context. The simulation results reveal that the optimal controller has improved performance over the conventional PID controller presently used, having faster speed of response, significantly better tracking performance, and better noise filtering properties. The execution speed and the core storage requirements would allow implementation even on a small online computer.