| 摘要 |
<p>PROBLEM TO BE SOLVED: To properly compensate for the offset error of a current sensor and moreover accurately detect the state of charge of battery. SOLUTION: Various controllers, such as an engine ECU 11 and other ECUs 12 to 15 are loaded to a vehicle. The power feed condition to ECUs 11 to 15 from the battery 25 is switched, depending on the change-over position of an IG switch 24, and particularly when the IG switch 24 is switched to a STA position, the power source is supplied to the engine ECU 11 and the cruise ECU 12. A current sensor 26 is provided between the IG switch 24 and battery 25. When the IG switch 24 is switched to the STA position, the engine ECU 11 stores the detected value of the current sensor 26, before the starter is driven and calculates the compensation value, using such a detected value. The output characteristics of the current sensor 26 are compensated, based on the compensation value.</p> |
