| 摘要 |
A heater control device includes a temperature detector (122; 122A, 1228) that detects a temperature of a heated object heated by a heater (121; 121A, 121B); an alternating-current power supply (101) for applying an alternating current voltage to the heater (121; 121A, 121B); a turn-on ratio decision unit (113; 1113) that determines a turn-on ratio of the heater (121; 121A, 121B) based on the temperature and a target temperature; a turn-on pattern decision unit (111, 114, 115; 111, 1114, 1115) that determines a partial turn-on pattern, as the turn-on pattern of the heater (121; 121A, 121B), which is a pattern of a turn-on ratio higher than the determined turn-on ratio in terms of a control-period, and to which a partial turn-on instead of a full turn-on is allocated on a half-wavelength basis of the alternating current voltage within the control period based on the turn-on ratio of the heater; and a turn-on controller (116; 1116) that controls turn-on of the heater (121; 121A, 121B) based on the determined turn-on pattern. |
