Temperature control arrangement for an extruding process

Details Temperature control arrangement for an extruding process Temperature control arrangement for an extruding process

G - Physics

06

G

341/32

G06G 7/30 (2006.01) B29C 47/92 (2006.01) F25B 29/00 (2006.01) G05D 23/20 (2006.01)

Patent

CA 1284198

ABSTRACT OF THE DISCLOSURE An arrangement for controlling the process temperature in an industrial process involving an extruding operation includes a summing element which sums the differ- ence between the process temperature and a setpoint temper- ature with the rate of change of the process temperature and conveys this sum to a proportional and integral con- troller so that the output thereof acts in an inverse manner with the process temperature. This output of the controller is summed with the change of temperature rate which has been fed forward, to generate a demand signal. The demand signal is shaped and compared to a ramp waveform to generate a variable frequency pulse for controlling a heating and/or cooling device associated with the extruding device. A change of speed rate can also be summed to form the demand signal.

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