| 摘要 |
PROBLEM TO BE SOLVED: To provide a heater controller capable of appropriately turning a heater driver on and off even in the event of a small duty ratio and applying a reasonable power amount to a heater part of a sensor.SOLUTION: A heater controller 1 includes: a heater driver 51 which is turned on and off according to a pulse drive signal PS; heater energization control means for outputting the pulse drive signal PS toward the heater driver 51 and controlling energization to a heater part 4; power supply voltage detection means for detecting a power supply voltage VB of a power source BT; ideal power amount acquisition means for acquiring a unit ideal power amount WAi; actual power amount calculation means for calculating a unit actual power amount WA; and duty ratio determination means for determining a duty ratio DT(n+1) of the pulse drive signal PS so that a unit actual power amount WA(n+1) is equal to a unit ideal power amount WAi(n+1) in a next period T(n+1). |
