究竟怎樣才算是車道維持? - 汽車
By Emma
at 2020-10-13T08:44
at 2020-10-13T08:44
Table of Contents
※ 引述《kowkow (聯合公園迷)》之銘言:
: "車道維持置中"
: and
: " 車道偏移修正"
: 這兩個都算是『車道維持』嗎?
這兩個都叫車道維持沒啥毛病,主要差異在於
車道維持置中:隨時修正,讓車輛隨時保持在中間
https://i.imgur.com/uCHH13W.jpg
車道偏移修正:靠近道路邊線時才進行修正
https://i.imgur.com/AaCebWR.jpg
成本差異(約3年前的資料)
Type1是偏移修正、Type2是維持置中
https://i.imgur.com/SioMBug.jpg
: LKAS的定義又是什麼?
: 如下圖這幾台車為例
: https://i.imgur.com/HU9aLCB.jpg
: 都是寫了偏移警示+偏移修正
: 代表這四台在這方面功能一模一樣囉?
: 我該如何從配備表中看出是
: "車道維持置中" 還是" 車道偏移修正" ?
: 下圖A 是我理解的" 車道偏移修正"
: 所運行的軌跡
: 下圖B是我理解"車道維持置中"
: 所運行的軌跡,不知道這樣理解對不對
: https://i.imgur.com/Les6AIG.jpg
: 亦或是這兩者都算是車道維持,
: 只是各家有精準度好壞之分,
: 越好就越接近圖B,越差就越接近圖A?
: 實際問各家業務我覺的也沒有講的很清楚..想跟大家請教~甘溫
一般車道維持有兩個原理
1. 以扭矩控制(Steer by Torque, SbT)
https://i.imgur.com/wdvhFep.jpg
2. 以轉角控制(Steer by Angle, SbA)
https://i.imgur.com/OsCGQRQ.jpg
以轉角控制表現較好:
(1) 較少在車道間震盪&震盪幅度也小
(2) 方向盤角速度低
(3) 受側風影響小
https://i.imgur.com/ESHwYXj.jpg
https://i.imgur.com/arAIruE.jpg
以轉角控制的原理,會設定方向盤轉角限制,超過後會解除
舉RAV4為例
19年式以前:以扭矩控制的LKA(lane keeping assist)
20年式之後:以轉角控制的LTA(lane tracking assist)
解除車道維持可以分兩種情況
1. 車輛超出道路標線即自動解除
2. 車維開啟條件下,超出系統允許方向盤最大轉角
至於是幾度,看各家車廠定義
不過以國道上的曲率,不需要方向盤較大的轉度
--
: "車道維持置中"
: and
: " 車道偏移修正"
: 這兩個都算是『車道維持』嗎?
這兩個都叫車道維持沒啥毛病,主要差異在於
車道維持置中:隨時修正,讓車輛隨時保持在中間
https://i.imgur.com/uCHH13W.jpg
車道偏移修正:靠近道路邊線時才進行修正
https://i.imgur.com/AaCebWR.jpg
成本差異(約3年前的資料)
Type1是偏移修正、Type2是維持置中
https://i.imgur.com/SioMBug.jpg
: LKAS的定義又是什麼?
: 如下圖這幾台車為例
: https://i.imgur.com/HU9aLCB.jpg
: 都是寫了偏移警示+偏移修正
: 代表這四台在這方面功能一模一樣囉?
: 我該如何從配備表中看出是
: "車道維持置中" 還是" 車道偏移修正" ?
: 下圖A 是我理解的" 車道偏移修正"
: 所運行的軌跡
: 下圖B是我理解"車道維持置中"
: 所運行的軌跡,不知道這樣理解對不對
: https://i.imgur.com/Les6AIG.jpg
: 亦或是這兩者都算是車道維持,
: 只是各家有精準度好壞之分,
: 越好就越接近圖B,越差就越接近圖A?
: 實際問各家業務我覺的也沒有講的很清楚..想跟大家請教~甘溫
一般車道維持有兩個原理
1. 以扭矩控制(Steer by Torque, SbT)
https://i.imgur.com/wdvhFep.jpg
2. 以轉角控制(Steer by Angle, SbA)
https://i.imgur.com/OsCGQRQ.jpg
以轉角控制表現較好:
(1) 較少在車道間震盪&震盪幅度也小
(2) 方向盤角速度低
(3) 受側風影響小
https://i.imgur.com/ESHwYXj.jpg
https://i.imgur.com/arAIruE.jpg
以轉角控制的原理,會設定方向盤轉角限制,超過後會解除
舉RAV4為例
19年式以前:以扭矩控制的LKA(lane keeping assist)
20年式之後:以轉角控制的LTA(lane tracking assist)
解除車道維持可以分兩種情況
1. 車輛超出道路標線即自動解除
2. 車維開啟條件下,超出系統允許方向盤最大轉角
至於是幾度,看各家車廠定義
不過以國道上的曲率,不需要方向盤較大的轉度
--
Tags:
汽車
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