| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify a system structure that adjusts the optical axis direction of a headlight taking consideration of a static and dynamic change in vehicle attitude, and even a change in occupants during a stop, and the like. SOLUTION: The optical axis direction of a vehicle headlight is adjusted by an actuator driven based on a control angleθact calculated from an estimated road surface inclinationθRe obtained, by an estimated pitch angleθpe estimated from the acceleration of a differentiated vehicle speed V and, an absolute inclinationθa from one inclinometer disposed in the vehicle. A change, if any, in the absolute inclinationθduring a vehicle stop is presumed to be a result of a change in occupants, and the estimated road surface inclinationθRe is corrected accordingly. The static and dynamic change in vehicle attitude and even the change in occupants during a stop, and the like are taken into consideration, and the system structure of adjusting the optical axis direction of the headlight can be simplified to realize a cost reduction.</p> |
