| 摘要 |
PROBLEM TO BE SOLVED: To stably control temperature with good transient response from the beginning of a temperature control period even at the time of transfer from a certain temperature control period to a next temperature control period in the control of temperature using PID control. SOLUTION: A control object to be heated is controlled in heating by a heater driven by PID control and a plurality of temperature control periods corresponding to the state of an injection molding machine are provided and temperature is controlled at every temperature control period. The molding machine thus constituted is provided with a means for applying an integral value preset and held for the next temperature control period and an offset value to an operational processing part performing temperature feedback control at least at the time of transfer from the specific temperature control period to the next specific temperature control period as an initial value for operation in the temperature control period.
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