Patent ID: 8907254
Filing Date: 2014-12-09
Classification: C23C,H01L

Abstract:
1. A heating control system comprising: a main heater and a sub heater each of which is used to heat an object to be heated; and a main heater power source which supplies a first electric power to the main heater, and a sub heater power source which supplies a second electric power to the sub heater, the main heater being subjected to temperature control so that the object to be heated has a preset target temperature, and the sub heater being subjected to electric power control so that the first electric power to be supplied to the main heater and the second electric power to be supplied to the sub heater are in a given ratio, said heating control system further comprising: temperature detecting means for detecting a detection temperature of the object to be heated; main heater temperature control means and sub heater temperature control means; main heater electric power detecting means for detecting a first electric power detection value, and sub heater electric power detecting means for detecting a second electric power detection value; and target electric power calculating means for calculating a second electric power target value, the main heater temperature control means receiving the preset target temperature and the detection temperature detected by the temperature detecting means, and controlling the first electric power so that the detection temperature matches the preset target temperature, the target electric power calculating means receiving the first electric power detection value detected by the main heater electric power detecting means, and calculating the second electric power target value by multiplying the first electric power detection value by the given ratio, and the sub heater temperature control means receiving the second electric power target value and the second electric power detection value detected by the sub heater electric power detecting means, and controlling the second electric power so that the second electric power detection value matches the second electric power target value.