適路性機車頭燈系統之設計與控制

The Design and Control of an Adaptive Motorcycle Headlight System

鄭文欽(Wen-Chin Cheng)

指導教授 ： 蕭耀榮

國立臺北科技大學/機電學院/車輛工程系所/碩士(2008年)

摘要

當機車行駛於彎道時，因為有側傾角的影響，造成機車於夜間過彎時產生照明死角。根據統計資料顯示台灣每年所發生之總交通意外死亡事故約17%交通事故的最大原因乃在於機車頭燈光束投射的方向不在前方的彎道上。藉由分析國際間機車頭燈照明之規範與標準，我們得以瞭解AFS是未來機車頭燈發展之趨勢，用以發展符合我國機車頭燈照明之規範。本論文對機車頭燈動態進行側傾角(roll angle)、轉向角(steer angle)、上下轉角(pitch angle)數值模擬分析，建立機車過彎時控制頭燈之數學模型。由模擬結果可得知機車轉向角角度最大不超過1.61度，轉向角對機車在彎道上的主動式輔助照明效果只有0.7m，其輔助照明效果不大。為了促使頭燈系統效能更加穩定及增加照明效率，本論文設計一10Hz低通濾波器來控制不必要的高頻光束調整。以馬達驅動之AFS(Adaptive Front-light System)頭燈系統普遍仍有系統反應慢、成本高等缺點，有鑑於此，本論文發展出一套適路性LED陣列機車頭燈系統，LED陣列機車頭燈系統可使各光源模組隨機車俯仰、轉彎、側傾及車速之不同動態與不同道路環境而改變其照明光型，大幅提升頭燈照射效率及照明範圍，以提供騎士更安全的照明視野。

關鍵字

AFS ； LED機車頭燈 ； 機車頭燈法規 ； 機車動態

並列摘要

Because of the influence of roll angle, it causes the motorcycle has a poor illumination when motorcycle runs in the curved way at night. According to the statistics of Taiwan every year, the biggest reason of 17% of fatal traffic accidents is the direction of the motorcycle headlight beam illumination not on the curved way ahead. By analyzing the regulation and standard of the international motorcycle headlight illumination, we can realize the AFS (Adaptive Front-light System) will be the tendency of the future motorcycle headlight development. It should fit in with the development of domestic motorcycle headlight illumination regulation. This thesis analyzes the numerical simulation of roll angle, steer angle and pitch angle with the motorcycle headlight dynamics. Then the headlight dynamic mathematics model will be set up for motorcycle on the curved way, and then the speed signal and velocity signal can be obtained. We can know the angle that headlight needs to adjust when motorcycle comes into the curved way. From the simulation results, we can realize that when the maximum motorcycle steer angle does not exceed 1.61°, the influence of this steer angle on the active-auxiliary illumination is only 0.7m. Therefore, the influence of this auxiliary illumination is not great. This thesis designs a 10Hz low-pass filter to control the adjustment of unnecessary high-frequency beam, in order to make the headlight system efficiency steady more, and the illumination efficiency will be increased. Generally, the motor headlight system with AFS still has the slow system reaction, high cost shortcoming. In view of this, this thesis develops the adaptive LED (Light-emitting diode) array of the headlight system that be applied to the motorcycle. The patent of this innovative motorcycle headlight system can make every light source diffuse the illumination angle of the continuous beam light with the dynamic adjustment of the three-dimension direction when motorcycle pitches, turns, rolls with different speed dynamics on different road conditions. Therefore, it can apparently improve the headlight illumination efficiency and illumination range in order to offer a safe-illuminated vision for the driver.

並列關鍵字

AFS ； LED motorcycle headlight ； motorcycle headlight regulation ； motorcycle dynamics

參考文獻

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[3] Kobayashi, S., Takahashi, K and Yagi, S., "Development of New Forward Lighting systems with controllable beams," SAE technical paper series 970646.

[4] Aoki, T. et al., "Development of Active Headlight System," SAE technical paper series 970650.

[5] Nakano, S., Shimada, T., Nakaya, A., Dohmoto M. and K. Nagata, "A Development of Advanced Safety Motorcycle," SAE technical paper series 2006-32-0112, 2006.

[6] 李威揚，汽車漸進式LED煞車燈設計研究，碩士論文，大同大學工業設計研究所，台北，2007。