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Auto-Leveling of HID Headlamp Using Preview Control  

Yang, Boojoong (School of Mechanical Engineering, Kyungil University)
Kang, Heeyong (School of Mechanical engineering Chonbuk National University)
Yang, Sungmo (School of Mechanical Engineering Chonbuk National University)
Publication Information
Journal of Mechanical Science and Technology / v.16, no.11, 2002 , pp. 1404-1411 More about this Journal
Abstract
A newly developed high intensity discharge (HID) automotive headlamp results in a high luminous gradient at the cutoff line, and proves the superior concept in safer and more com-fortable nighttime driving. This new headlamp technology Provides drivers expanded night vision by a significantly improved light pattern. However, the HID headlamp may dazzle other traffics during traversing a rough road or encountering an unexpected bump. To resolve this problem, an automatic headlamp leveling device is necessary. A preview control is presented for the design of the leveling system. The proposed control algorithm is capable of attenuating a dynamic glare which is one of the major detractors to a driving in dark roads. Computer simulations using ADAMS are carried out to confirm the effectiveness on the control system.
Keywords
High Intensity Discharge (HID); Vertical Cutoff; Auto-Leveling; preview Control;
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