Method and Apparatus for Controlling Using Approximation Algorithm

摘要

The present invention relates to a mold temperature control method using an approximation algorithm that enables more precise temperature control in consideration of changes over time. The present invention relates to a target value set to an optimum temperature of an injection mold and a displacement equal to the target value up and down. With respect to the longitudinal temperature section partitioned by the temperature value including the upper and lower set values, the relative position of the temperature at the past time changes to the relative position of the temperature at the present time, and the temperature change pattern. A first step of storing a control amount of a corresponding controlled physical control variable in a memory; Setting a temperature measurement time interval that is a time interval between the past time and the present time; And a third step of measuring a temperature at each temperature measurement time interval set in the second step, and controlling the control variable according to a control amount of the control variable corresponding to the temperature change pattern stored in the memory.