| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas sensor control device capable of stabilizing a feedback-controlled pump current at an early stage in using a gas sensor by changing a target voltage.SOLUTION: A gas sensor control device 1 of a gas sensor 2 equipped with an electromotive force cell 24 and a pump cell 14 includes: current control means 69 for feedback-controlling a pump current Ip such that an electromotive force cell voltage Vs becomes a target voltage Vr; voltage setting means S5, S13 for setting the target voltage Vr to any of a first target voltage Vr1 and a second target voltage Vr2; and constant number group setting means S4, S12 for setting a control parameter group Kpid used for feedback-control to a first control parameter group Kpid1 when the target voltage Vr is the first target voltage Vr1, and to a second control parameter group Kpid2 when the target voltage Vr is the second target voltage Vr2. The second control parameter group Kpid2 is a control parameter group Kpid by which the pump current Ip is stabilized earlier than the case that the first control parameter group Kpid1 is continuously used. |
