Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaust gas sensor temperature control program

摘要

A control input (DUT) for controlling a heater ( 13 ) which heats an active element ( 10 ) of an exhaust gas sensor ( 8 ) includes at least one of another component depending on the difference between temperature data of the active element ( 10 ) and a target temperature, a component depending on the target temperature, and a component depending on the temperature data of the active element ( 10 ). The control input is determined by an optimum control algorithm. A component depending on the temperature of an exhaust gas and the component depending on the target temperature are determined based on a predictive control algorithm. The temperature of the active element ( 10 ) of the exhaust gas sensor ( 8 ) is thus controlled stably at a desired temperature.