JP2846826B2 - Test vehicle circuit - Google Patents
Test vehicle circuitInfo
- Publication number
- JP2846826B2 JP2846826B2 JP30996194A JP30996194A JP2846826B2 JP 2846826 B2 JP2846826 B2 JP 2846826B2 JP 30996194 A JP30996194 A JP 30996194A JP 30996194 A JP30996194 A JP 30996194A JP 2846826 B2 JP2846826 B2 JP 2846826B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- road portion
- section
- curved road
- steering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、いわゆる高速周回路な
どのテストコースの曲線路部分における旋回中の操縦
性、安定性の評価精度を高めうるとともに、操舵初期及
び操舵に対する車両の動きの正確度を容易にかつ精度よ
く評価しうる試験用自動車周回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can improve the evaluation accuracy of steering and stability during a turn on a curved road section of a test course such as a so-called high-speed circuit, and can accurately estimate the movement of a vehicle with respect to initial steering and steering. The present invention relates to a test vehicle circuit in which the degree can be easily and accurately evaluated.
【０００２】[0002]
【従来の技術】自動車の各種実走行試験を目的としたテ
ストコースの一つである高速周回路は、一般に平坦な直
線路部分と、高速旋回時の安定性を確保するために傾斜
（バンク）が付与された曲線路部分と、両者をつなぐ緩
和曲線路部分とからなる。2. Description of the Related Art A high-speed circuit, which is one of the test courses for various actual running tests of automobiles, generally has a flat straight road section and a slope (bank) for ensuring stability during high-speed turning. And a relaxed curved road portion connecting the two.
【０００３】[0003]
【発明が解決しようとする課題】しかし、バンクを付与
した曲線路部分では、車両が傾くため、車両の操縦性、
安定性に対する評価が一般道路におけるものと差が生じ
やすく、正しい評価を得ることが困難であるという問題
点が生じている。However, on a curved road portion provided with a bank, the vehicle is inclined, so that the maneuverability of the vehicle is reduced.
There is a problem in that the evaluation for stability is likely to be different from that for general roads, and it is difficult to obtain a correct evaluation.
【０００４】曲線路部分でバンクを付与しない場合で
も、この曲線路部分の曲率が除々に変化しているときに
は、操舵入力あるいは加減速させた場所によって操縦
性、安定性に対する評価が異なり、その再現性が乏しい
ことも指摘されている。[0004] Even when a bank is not provided on a curved road portion, when the curvature of the curved road portion is gradually changing, the evaluation of maneuverability and stability differs depending on the steering input or the place where acceleration / deceleration is performed. It is also pointed out that the sex is poor.
【０００５】さらに曲線路部分の曲率を一定としても、
その中心角が１４０°未満であれば、該曲線路部分の円
弧の長さが短くなり、この結果、緩和曲線路部分を含め
たテストコースの折返し部分において、操舵入力を複数
回行って評価の精度を高めることが困難となる。[0005] Further, even if the curvature of the curved road portion is constant,
If the central angle is less than 140 °, the length of the arc of the curved road portion is reduced, and as a result, the steering input is performed a plurality of times at the turning portion of the test course including the eased curved road portion, and the evaluation is performed. It is difficult to increase the accuracy.
【０００６】又曲率が一定の曲線路部分を長くするため
に緩和曲線路部分を短くすると、緩和区間を走行すると
きのハンドル操作のための時間（緩和時間）が短くな
り、熟練したドライバーでないと正確な操舵ができない
ばかりでなく、熟練ドライバーであっても操舵速度が一
般道に比べて速くならざるを得ず、この結果、直線路部
分から曲線路部分に進入するに際しての操舵に対する車
両の動きの正確度（操舵初期の手応、応答性）を一般道
と同じ条件で正しく評価することが困難となり、評価者
によってバラツキが生じやすく、評価精度を低下させる
という問題点も生じている。[0006] Further, if the relaxation curve section is shortened in order to lengthen the curve section having a constant curvature, the time for operating the steering wheel (relaxation time) when traveling on the relaxation section is shortened, and unless a skilled driver is used. Not only cannot accurate steering be performed, but even a skilled driver has to steer the steering speed faster than on a general road, and as a result, the movement of the vehicle with respect to steering when entering a curved road from a straight road portion It is difficult to correctly evaluate the accuracy (response and response at the beginning of steering) under the same conditions as those on a general road, and there is a problem that the evaluator is likely to vary and the evaluation accuracy is reduced.
【０００７】通常、前記緩和曲線路部分は、直線路部分
から曲線路部分に滑らかに進入するために設けられ、一
般にその形状は、各部の曲率半径が曲線長に逆比例し等
速走行中の車両のハンドルを等角速度で切り込んでいっ
たときの軌跡に近似するクロソイド曲線、あるいは直線
路部分からバンクを持った曲線路部分へ進入する際に車
両に生じるローリング運動をドライバーの知覚限界値以
下に抑えるように決められたマコンネル曲線に基づいて
設定されているが、このような緩和曲線路部分の区間長
を長くして緩和時間を増大させ、ドライバーの操舵に対
する負担を軽減させようとすると、おのずと直線路部分
の長さと曲線路部分の長さとが短くなるため、却って同
じ操舵入力を複数回行うことが困難となり、テストの評
価精度が悪くなることがある他、テストコース全体の敷
地面積も広くなり、建設費の増大を招くこともある。Usually, the above-mentioned relaxed curved road portion is provided to smoothly enter a curved road portion from a straight road portion. Generally, the shape is such that the radius of curvature of each portion is inversely proportional to the length of the curved line, and the shape of the curved road portion is constant. The rolling motion that occurs in the vehicle when entering a curved road section with a bank from a straight road section, or a clothoid curve that approximates the trajectory when the vehicle's steering wheel is cut at a constant angular speed, is below the driver's perception limit value It is set based on the McConnell curve determined to suppress, but if you try to increase the relaxation time by increasing the section length of such a gentle curve road part and reduce the burden on the driver's steering, naturally Since the length of the straight road portion and the length of the curved road portion are shortened, it is rather difficult to perform the same steering input a plurality of times, and the test evaluation accuracy is deteriorated. Other there is a bet, site area of the entire test course also becomes wider, sometimes causing an increase in construction costs.
【０００８】本発明者は、曲率が一定の曲線路部分をで
きるだけ長くするために緩和曲線路部分を短くしたテス
トコースにおいて、従来、緩和曲線路部分の形状として
用いられているクロソイド曲線を車両誘導ラインとする
ことによって、緩和曲線路部分の区間長を特に長くする
ことなく緩和時間を増大でき、操舵初期及び操舵に対す
る車両の動きの正確度の評価精度を容易に向上しうるこ
とを見出した。The inventor of the present invention has proposed a method for guiding a clothoid curve, which has been conventionally used as a shape of a relaxed curved road portion, in a vehicle on a test course in which a curved road portion having a constant curvature is shortened in order to make the curved road portion as long as possible. By using a line, it has been found that the relaxation time can be increased without particularly increasing the section length of the relaxation curve road portion, and the accuracy of the evaluation of the accuracy of the movement of the vehicle with respect to the initial steering and the steering can be easily improved.
【０００９】すなわち本発明は、中心角を１４０°以上
とした曲率が一定の平坦な円曲線路部分を具える折返し
路部分に、直線路部分の外側車線から円曲線路部分の内
側曲線にかけてクロソイド曲線からなる車両誘導ライン
を付すことを基本として、円曲線路部分における旋回中
の操縦性、安定性の評価精度を高めうるとともに、操舵
初期及び操舵に対する車両の動きの正確度を容易にかつ
精度よく評価しうる試験用自動車周回路の提供を目的と
している。In other words, the present invention provides a clothoid that extends from a lane outside a straight road section to an inside curve of a circular curved road section on a folded road section having a flat circular curved road section having a constant center angle of 140 ° or more and a constant curvature. Based on the provision of a vehicle guidance line consisting of curves, it is possible to improve the evaluation accuracy of maneuverability and stability during turning on a circular curved road part, and to easily and accurately evaluate the accuracy of vehicle movement with respect to initial steering and steering. The purpose is to provide a test vehicle circuit that can be evaluated well.
【００１０】[0010]
【課題を解決するための手段】前記目的を達成するため
に本発明の試験用自動車周回路は、少なくとも２車線を
有するとともに直線路部分から、中心角を１４０°以上
かつ１８０°以下としかつ曲率が一定の平坦な円曲線路
部分に至る間に、直線路部分と円曲線路部分とを滑らか
につなぐ緩和曲線路部分を具える折返し路部分に、直線
路部分の外側車線から円曲線路部分の内側車線にかけて
ドライバーの目視により車両を案内ししかもクロソイド
曲線からなる車両誘導ラインが付された折返し走行部を
有する。In order to achieve the above object, a test vehicle circuit of the present invention has at least two lanes, has a center angle of 140 ° or more and 180 ° or less from a straight road portion, and has a curvature. While reaching a constant flat circular curved road portion, the curved road portion includes a curved curved road portion that smoothly connects the straight road portion and the circular curved road portion, and a circular curved road portion from the outside lane of the straight road portion. The vehicle has a turn-back section that guides the vehicle visually to the inside lane of the vehicle and is provided with a vehicle guidance line formed of a clothoid curve.
【００１１】[0011]
【作用】折返し路部分の円曲線路部分は、中心角を１４
０°以上かつ１８０°以下とし、かつ曲率が一定な平坦
面として形成される。従って、バンクを付与した曲線路
部分に比べて、旋回時の操縦性、安定性をより正確に精
度よく評価することが出来る。しかもその曲率を一定に
しているため、操舵入力あるいは車両を加減速させた場
所による評価のバラツキを低減でき、その再現性を高め
うる。The center angle of the circular curved road portion of the folded road portion is 14
It is formed as a flat surface with a curvature of 0 ° or more and 180 ° or less and a constant curvature. Therefore, it is possible to more accurately and accurately evaluate the maneuverability and stability at the time of turning as compared with a curved road portion provided with a bank. Moreover, since the curvature is kept constant, it is possible to reduce the variation in the evaluation depending on the steering input or the place where the vehicle is accelerated / decelerated, and it is possible to improve the reproducibility.
【００１２】又中心角を１４０°以上としているため、
円曲線路部分の円弧の長さを、同じ操舵入力を複数回行
いうる程度に長くでき、評価精度を向上しうる。Further, since the central angle is set to 140 ° or more,
The length of the arc of the circular curved road portion can be increased to the extent that the same steering input can be performed a plurality of times, and the evaluation accuracy can be improved.
【００１３】前記中心角が１４０°未満となると、円弧
の長さが過小となり、同じ操舵入力の繰り返しによる旋
回性能の評価精度を阻害する。If the central angle is less than 140 °, the length of the arc becomes too small, and the accuracy of the evaluation of the turning performance by repeating the same steering input is impaired.
【００１４】又折返し路部分に、直線路部分の外側車線
から円曲線路部分の内側車線にかけてドライバーの目視
により車両を案内する車両誘導ラインを付すとともに、
この車両誘導ラインを、クロソイド曲線としている。従
って、円曲線路部分における横加速度が０．５Ｇ程度の
ときの設計速度で約１．５〜３秒の緩和時間に応じた比
較的短い緩和曲線路部分を具えた折返し路部分であって
も、直線路部分の外側車線から円曲線路部分の内側車線
にかけて緩和曲線路部分の区間長をこえた長さでかつ前
記緩和時間を５秒程度に増して前記車両誘導ラインに沿
った緩和区間を形成でき、操舵初期及び操舵に対する車
両の動きの正確度（直線路部分からの円曲線路部分への
進入のしやすさ）を、車両中心を車両誘導ラインに沿わ
せて走行させることによって、一般道と同じ条件で精度
よく評価しうるとともに、該車両誘導ラインは、車両の
運動軌跡を考えた前記クロソイド曲線からなるため、ド
ライバーの負担を減じつつ容易に評価精度を向上しう
る。In addition, a vehicle guidance line for guiding the vehicle from the outside lane of the straight road portion to the inside lane of the circular curved road portion is provided on the return road portion,
This vehicle guidance line is a clothoid curve. Therefore, even if the curved road portion is a folded road portion having a relatively short relaxed curve portion corresponding to a relaxation time of about 1.5 to 3 seconds at a design speed when the lateral acceleration is about 0.5 G. The length of the relaxation section along the vehicle guidance line is increased from the outside lane of the straight road section to the inside lane of the circular curve section over the section length of the relaxation curve section, and the relaxation time is increased to about 5 seconds. The accuracy of the movement of the vehicle with respect to the initial steering and the steering (easiness of entry from a straight road portion to a circular curved road portion) can be formed by running the vehicle along the vehicle guidance line in a general manner. The vehicle guidance line can be accurately evaluated under the same conditions as the road, and since the vehicle guidance line is composed of the clothoid curve in consideration of the motion trajectory of the vehicle, the evaluation accuracy can be easily improved while reducing the burden on the driver.
【００１５】[0015]
【実施例】以下本発明の一実施例を図面に基づき説明す
る。図１において本発明の試験用自動車周回路１は、折
返し路部分２に、ドライバーの目視により車両を案内す
る車両誘導ラインＬが付された折返し走行部３を有す
る。An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a test vehicle circuit 1 of the present invention has a turnaround section 3 provided with a vehicle guidance line L for guiding a vehicle visually by a driver in a turnway portion 2.
【００１６】前記折返し路部分２は、少なくとも２車
線、本実施例では内側車線Ａと外側車線Ｂとの２車線を
有するとともに、排水勾配以外の傾斜をもたない実質的
に平坦な路面を具え、かつ道巾Ｗを６ｍ以上としてい
る。The folded road portion 2 has at least two lanes, in this embodiment, two lanes, an inner lane A and an outer lane B, and has a substantially flat road surface having no slope other than the drainage slope. And the width W is 6 m or more.
【００１７】又折返し路部分２は、直線路部分４から、
曲率が一定の平坦な円曲線路部分５に至る間に、直線路
部分４と円曲線路部分５とを滑らかにつなぐ緩和曲線路
部分６を具える。Also, the turning road portion 2 is formed from the straight road portion 4
Between the flat circular curved road portion 5 having a constant curvature, a relaxed curved road portion 6 for smoothly connecting the straight road portion 4 and the circular curved road portion 5 is provided.
【００１８】前記円曲線路部分５は、その中心角αを１
４０°以上かつ１８０°以下としている。このように中
心角αを１４０°以上としかつ曲率が一定の平坦路面と
することにより、旋回中の操縦性、安定性を精度よく評
価できる。The circular curved road portion 5 has a central angle α of 1
It is 40 ° or more and 180 ° or less. By setting the center angle α to be equal to or more than 140 ° and a flat road surface having a constant curvature in this way, it is possible to accurately evaluate the maneuverability and stability during turning.
【００１９】又本発明において緩和曲線路部分６のセン
ターラインＣに沿った区間長Ｔは、前記車両誘導ライン
Ｌを折返し路部分２に付すため、例えば円曲線路部分５
の設計速度（横加速度が約０．５Ｇ）で１．５秒から３
秒の緩和時間を要する比較的短い長さで十分である。In the present invention, the section length T along the center line C of the relaxed curved road portion 6 is set at, for example, the circular curved road portion 5 in order to attach the vehicle guidance line L to the folded road portion 2.
1.5 seconds to 3 at design speed (lateral acceleration about 0.5G)
A relatively short length requiring a relaxation time of seconds is sufficient.
【００２０】これは、前記車両誘導ラインＬが直線路部
分４の外側車線Ｂから円曲線路部分の内側車線Ａにかけ
て折返し路部分２に付されるため、この車両誘導ライン
Ｌに沿って走行した際の事実上の緩和時間を５秒程度に
増大できるからである。Since the vehicle guidance line L is attached to the return road portion 2 from the outside lane B of the straight road portion 4 to the inside lane A of the circular curved road portion, the vehicle travels along the vehicle guidance line L. This is because the actual relaxation time can be increased to about 5 seconds.
【００２１】又車両誘導ラインＬは、クロソイド曲線か
らなるため、ドライバーの負担を軽減しうるとともに、
その操舵初期における評価（旋回するための操舵に対す
る車両の動きの正確度の評価）を容易とし、かつ評価精
度を向上しうる。Further, since the vehicle guidance line L has a clothoid curve, the burden on the driver can be reduced.
The evaluation in the early stage of the steering (evaluation of the accuracy of the movement of the vehicle with respect to the steering for turning) can be facilitated, and the evaluation accuracy can be improved.
【００２２】[0022]
【具体例】図１に示す折返し走行部を有する長楕円形状
の試験用自動車周回路（設計線上の周長：３２００ｍ、
直線路部分の長さ：１２００ｍ、緩和曲線路部分の長さ
Ｔ：６０ｍ、円曲線路部分の半径Ｒ：１５０ｍ）におい
て、２０００ｃｃＦＦ車にタイヤのみを変更（テスト
Ａ、テストＢ）して実走行試験を４人のドライバー
（ａ、ｂ、ｃ、ｄ）で行い（実施例１、２）、旋回時の
操縦性、安定性（表１参照）、および操舵初期の正確度
（表２参照）を１０点法での官能評価で表示するととも
に、標準偏差を各テストＡ、Ｂについて求めた。[Specific Example] A test vehicle circuit having a long elliptical shape having a folded traveling portion shown in FIG. 1 (circumference length on a design line: 3200 m,
On a straight road section length: 1200m, a transition curve section length T: 60m, and a circular curve section radius R: 150m), only the tires were changed to a 2000ccFF vehicle (test A, test B) and actual running was performed. The test was carried out by four drivers (a, b, c, d) (Examples 1 and 2), and the maneuverability and stability during turning (see Table 1) and the accuracy of the initial steering (see Table 2) Was displayed in a sensory evaluation by the 10-point method, and the standard deviation was determined for each of the tests A and B.
【００２３】なお円曲線路部分の中心角が１００°のも
のを比較例１、２（表１参照）、車両誘導ラインのない
ものを比較例３、４（表２参照）として実施例１、２の
標準偏差と比較した。In the first embodiment, the case where the center angle of the circular curved road portion is 100 ° is referred to as Comparative Examples 1 and 2 (see Table 1), and those having no vehicle guidance line are referred to as Comparative Examples 3 and 4 (see Table 2). 2 standard deviations.
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【表２】 [Table 2]
【００２６】テストの結果、実施例のものは比較例のも
のに比して、標準偏差の値が小さく、評価のバラツキを
低減して、その精度を向上していることが確認できた。As a result of the test, it was confirmed that the value of the standard deviation of the example was smaller than that of the comparative example, and that the variation in evaluation was reduced and the accuracy was improved.
【００２７】[0027]
【発明の効果】叙上の如く本発明の試験用自動車周回路
は、旋回時の操縦性、安定性、および操舵初期の正確度
について、その評価精度を向上しうる。As described above, the test vehicle circuit of the present invention can improve the evaluation accuracy of the maneuverability, the stability, and the accuracy of the initial stage of steering at the time of turning.
【図１】本発明の一実施例を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.
２ 折返し路部分 ３ 折返し走行部 ４ 直線路部分 ５ 円曲線路部分 ６ 緩和曲線路部分 Ａ 内側車線 Ｂ 外側車線 Ｌ 車両誘導ライン 2 Turnback section 3 Turnaround section 4 Straight road section 5 Circular curve section 6 Relaxing curve section A Inside lane B Outside lane L Vehicle guidance line
Claims (1)
部分から、中心角を１４０°以上かつ１８０°以下とし
かつ曲率が一定の平坦な円曲線路部分に至る間に、直線
路部分と円曲線路部分とを滑らかにつなぐ緩和曲線路部
分を具える折返し路部分に、直線路部分の外側車線から
円曲線路部分の内側車線にかけてドライバーの目視によ
り車両を案内ししかもクロソイド曲線からなる車両誘導
ラインが付された折返し走行部を有する試験用自動車周
回路。1. A straight road portion and a circular curve portion having at least two lanes and extending from a straight road portion to a flat circular curve portion having a central angle of 140 ° or more and 180 ° or less and a constant curvature. On the turn-around road section, which has a moderately curved road section that smoothly connects to the road, a vehicle guidance line consisting of a clothoid curve that guides the vehicle visually from the driver from the outside lane of the straight road section to the inside lane of the circular curve section A test vehicle circuit having an attached turnover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30996194A JP2846826B2 (en) | 1994-11-18 | 1994-11-18 | Test vehicle circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30996194A JP2846826B2 (en) | 1994-11-18 | 1994-11-18 | Test vehicle circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08144208A JPH08144208A (en) | 1996-06-04 |
| JP2846826B2 true JP2846826B2 (en) | 1999-01-13 |
Family
ID=17999451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30996194A Expired - Fee Related JP2846826B2 (en) | 1994-11-18 | 1994-11-18 | Test vehicle circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2846826B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2760090B1 (en) * | 1997-02-25 | 1999-05-14 | Peugeot | MULTI-GRIP TEST TRACK |
| JP5783204B2 (en) * | 2013-05-01 | 2015-09-24 | トヨタ自動車株式会社 | Driving support device and driving support method |
-
1994
- 1994-11-18 JP JP30996194A patent/JP2846826B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08144208A (en) | 1996-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |