Temperature-controlling method, for example in systems for injec

Details Temperature-controlling method, for example in systems for injec Temperature-controlling method, for example in systems for injec

1992-11-25

1995-02-21

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219494, 219506, 364557, 432 36, H05B 102

Patent

active

053918606

ABSTRACT:
A method for controlling the temperature, for example in an injector of a thermoplastics injection system which uses a closed-loop servocontrol system in which the electrical heating resistor (R) is periodically deactivated for short periods of time (Vc, Vr) in order to extrapolate the actual temperature (Tpl) of the plastics (P) in the injector, in order to control it as accurately as possible and to reset the parameters of the closed-loop servocontrol system.

REFERENCES:
patent: 4614860 (1986-09-01), Kativois
patent: 4845341 (1989-07-01), Rae
patent: 5090305 (1992-02-01), Lehman
patent: 5216226 (1993-06-01), Miyoshi
patent: 5221916 (1993-06-01), McQueen
"Patent Abstracts of Japan," vol. 15, No. 120 (M-1096) (4648) Mar. 25, 19 1.
"Patent Abstracts of Japan," vol. 8, No. 26 (M-273) (1463) Feb. 3, 1984.
Gustafson et al, "Model Predictive Control (MPC) of Injection Machines," Proceedings of the 26th IEEE Conference on Decision and Control, vol. 3, Dec. 1987, pp. 2017-2026.

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