Temperature controller

Abstract

Abstract PURPOSE:To perform control on the basis of surface temperature by performing temperature control by using a surface temperature sensor until a stationary state is entered and correcting a set value according to the difference between internal temperature and set temperature after the stationary state is entered. CONSTITUTION:Initial processing is performed at the start of operation to store a storage device 13 with the surface temperature T1 and internal temperature T2 of a cylinder 1 from thermocouples 5a and 5b through a sampling input means 11 and the set temperature W1 from a temperature setter 14. The surface temperature T1 and internal temperature T2 of the cylinder 1 rise through the heating of a heater 5 and the temperature obtained by the sensor 5 rises; and a stationary flag St is set at time t1 with the difference between the target value W1 and T1 decreases below deviation e1. Then, it is checked whether a sample counter (n) counts longer than stable sample time N or not, and the counter (n) is cleared at the sample time N to check whether the difference between the target value W1 and T2 is less than deviation e2 or not. When so, the temperature is corrected.

Inventors

• 👤 Norio Yoshikawa
• 👤 典雄 吉川

Bibliographic Details