TEMPERATURE CONTROL DEVICE OF INJECTION MOLDING MACHINE
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United States of America Patent
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Issued Date -
Apr 28, 2016
app pub date -
Oct 26, 2015
filing date -
Oct 27, 2014
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Abstract
A PID control system 10 is included to determine the deviation value e of a detection temperature PV and a set temperature SV, to perform PID control such that the deviation value e becomes zero and to output, to the corresponding heating portion 4 or cooling portion 5, only one of a heating operation amount yh which is generated by an I operation output, a D operation output, the deviation value e and a heating side proportional band to perform control on the heating portion 4 and a cooling operation amount yc which is generated by an I operation output, a D operation output, the deviation value e and a cooling side proportional band to perform control on the cooling portions 5, whichever amount is relatively larger.
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