JPS63262542A - Method for measuring transitional air input to vehicle - Google Patents
Method for measuring transitional air input to vehicleInfo
- Publication number
- JPS63262542A JPS63262542A JP9687287A JP9687287A JPS63262542A JP S63262542 A JPS63262542 A JP S63262542A JP 9687287 A JP9687287 A JP 9687287A JP 9687287 A JP9687287 A JP 9687287A JP S63262542 A JPS63262542 A JP S63262542A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- air input
- running
- side wind
- pressure sensors
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title description 10
- 238000005259 measurement Methods 0.000 claims description 11
- 238000000691 measurement method Methods 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 abstract description 2
- 238000013500 data storage Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 230000001052 transient effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910012526 LiSF Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【発明の詳細な説明】
[発明の目的]
(産業上の利用分野)
本発明は車両を横風帯を横切ったときの横風に空
よる影響を計測する車両の過渡的空気入力計測方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a method for measuring transient air input of a vehicle, which measures the influence of the sky on a crosswind when the vehicle crosses a crosswind zone.
(従来の技術)
車両の走行安定性に関する一つの課題として横風を受け
たときの走行安定性を向上させることがある。このため
、横風に対する車両の影響を精密に計測することが望ま
れている。(Prior Art) One of the issues regarding the running stability of a vehicle is to improve the running stability when subjected to crosswinds. Therefore, it is desired to accurately measure the influence of a vehicle on crosswinds.
(発明が解決しようとする問題点)
しかし、横風を受けたときに実車が受ける過渡的空気入
力の計測は行なわれてぃながったため、横風を受けたと
きの走行安定性を向上させる障害となっていた。(Problem to be solved by the invention) However, the measurement of the transient air input that an actual vehicle receives when subjected to a crosswind has not been carried out, which is an obstacle to improving driving stability when subjected to a crosswind. It became.
本発明の目的は実際の車両が横風帯を横切って走行した
場合の車両に加わる風圧力を算出して、車両の横風によ
る影響を過渡的に算出できるよう屯
にした車両の過渡的空気入力計測方法を提供することに
ある。The purpose of the present invention is to calculate the wind pressure applied to the vehicle when the vehicle is actually traveling across a crosswind belt, and to measure the transient air input of the vehicle in order to transiently calculate the influence of the crosswind on the vehicle. The purpose is to provide a method.
[発明の構成]
(問題点を解決するための手段及び作用)外面が面積S
iを有する複数の計測信号部分に分割され、該計測部分
内の計測点毎に1つの圧力センサが設けられ、計測点毎
に予め設定されたベクトル計数に′を有する車両を横風
帯を通過させ、少なくとも上記各計測部分での圧力セン
サにより検出される圧力Piと上記面積Stとベクトル
計数に′とを積算した値の総和を算出することにより車
両走行中の時間毎の擬似的空気入力者測定し、風洞試験
において算出された擬似的空気入力も実際に車両に作用
する空気入力との関係に基いて上記走行中の擬似的空気
入力を補正して実際に車両走行中に時間毎に作用する空
気入力を計測するようにした車両への過渡的空気入力計
測方法である。[Structure of the invention] (Means and effects for solving the problem) The outer surface has an area S
The system is divided into a plurality of measurement signal parts having i, one pressure sensor is provided for each measurement point in the measurement part, and a vehicle having a preset vector count of ' for each measurement point is caused to pass through a crosswind zone. , by calculating the sum of the sum of the pressure Pi detected by the pressure sensor at least at each of the measurement parts, the area St, the vector count, and ′, the pseudo air input person is measured for each hour while the vehicle is running. However, the pseudo air input calculated in the wind tunnel test is corrected based on the relationship with the air input that actually acts on the vehicle, and the pseudo air input during driving is corrected so that the pseudo air input actually acts on the vehicle at every hour while the vehicle is running. This is a method for measuring transient air input to a vehicle that measures air input.
(実施例)
以下、図面を参照して本発明の一実施例に係る車両への
過渡的空気入力計測方法について説明する。第1図にお
いて、11は試験車両である。この試験車両11の外面
には第2図(A)〜(C)に1〜n点に圧力センサP1
〜Pnが設けられている。(Embodiment) Hereinafter, a method for measuring transient air input to a vehicle according to an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 11 is a test vehicle. On the outer surface of this test vehicle 11, pressure sensors P1 are installed at points 1 to n as shown in FIGS. 2(A) to (C).
~Pn are provided.
この圧力センサP1〜Pnにより車両の表面積Stの領
域が代表される。この圧力センサP1〜Pnにより検出
される時刻tでの圧力P 1 (t)〜p n (t)
は増幅器12により増幅された後データ記憶部13に順
次記憶される。また、14は光電管であり、光電管14
から出力された光が横風発生器15の手前に設けられる
反射板16に反射された光を受けると、データ記憶部1
3によるデータの書き込み動作が開始される。These pressure sensors P1 to Pn represent a region having a surface area St of the vehicle. Pressure P 1 (t) to p n (t) at time t detected by the pressure sensors P1 to Pn
are amplified by the amplifier 12 and then sequentially stored in the data storage section 13. Further, 14 is a phototube, and the phototube 14
When the light output from the cross wind generator 15 receives the light reflected by the reflector 16 provided in front of the cross wind generator 15, the data storage unit 1
3 starts the data write operation.
また、横風発生器15は例えば曲線aに示すように風速
分布を持つ横風を発生している。Further, the cross wind generator 15 generates a cross wind having a wind speed distribution as shown by curve a, for example.
次に、第1図のデータ記憶部13に記憶された圧力P
i (t)は第2図に示すような方法により、試験車内
11の実走行中における横風を受けた場合の空気入力が
算出される。つまり、データ記憶部13に記憶される圧
力P i (t)はA/D変換器21によりデジタルデ
ータに変換されてコンピュータ22に入力される。この
コンピュータ22において、以下の3つの処理がなされ
る
(1) 擬似ヨーイングモーメント
YM(t)’ −ΣP i (t) ΦSi争Ky
IIli−LiSF(t)’=ΣP i (t) ・
Si−瞥〒占;薯〒ト(3) 擬似ローリングモーメ
ント
RM(t)””’ΣPi(t)・5i−Kr[lli
拳H1そして、コンピュータ22で算出された結果が出
力装置23から出力される。Next, the pressure P stored in the data storage section 13 in FIG.
i (t) is calculated by the method shown in FIG. 2 to calculate the air input when the test vehicle interior 11 is exposed to a crosswind during actual driving. That is, the pressure P i (t) stored in the data storage section 13 is converted into digital data by the A/D converter 21 and input to the computer 22 . In this computer 22, the following three processes are performed (1) Pseudo yawing moment YM(t)' -ΣP i (t) ΦSi conflict Ky
IIli−LiSF(t)′=ΣP i (t)・
Si-view (3) Pseudo rolling moment RM(t)""'ΣPi(t)・5i-Kr[lli
Fist H1 Then, the result calculated by the computer 22 is output from the output device 23.
次に、本発明の一実施例の動作について説明する。まず
、試験車両11を横風発生器15方向に発進させる。そ
して、反射板16を横切るとデータ記憶部13へのデー
タの書き込みが開始される。Next, the operation of one embodiment of the present invention will be explained. First, the test vehicle 11 is started in the direction of the crosswind generator 15. Then, when the light crosses the reflection plate 16, writing of data to the data storage section 13 is started.
そして、横風発生器15を横切っている間の圧力センサ
P1〜Pnで検出される圧力P 1 (t)〜p n
(t)はデータ記憶部13に時々刻々と記憶されていく
。Then, the pressures P 1 (t) to p n detected by the pressure sensors P1 to Pn while crossing the crosswind generator 15
(t) is stored in the data storage unit 13 from time to time.
これらのデータの書込みが終了すると、データ記憶部1
3に記憶されたデータより時刻tでのヨーイングモーメ
ントYM(t)、サイドフォース8 F (t) 、ロ
ーリングモーメントRM (t)力(算出される。When writing of these data is completed, the data storage unit 1
From the data stored in 3, the yawing moment YM(t), side force 8F(t), and rolling moment RM(t) force at time t are calculated.
まず
YM(t)′==苓Pi(t)・5ieKyIlli
争Li・・・(1)
S F (t) ’−苓p i (t)・5i−Ksf
叫 ・・・(2)RM(t)’ =EPi(t) ・
51−Krm1 φHi・・・(3)
が算出される。ここでSiはi点に代表される面積、K
ym4iはi点でのヨーイングモーメントのベクトル係
数、Ksf+iはi点でのサイドフォースのベクトル係
数、Kr[lI#iはi点でのローリングモーメントの
ベクトル係数、Liはi点でのヨーイングモーメントの
アーム長、Hlはi点でのロー1ノングモーメントのア
ーム長である。First, YM(t)′==苓Pi(t)・5ieKyIlli
Conflict Li...(1) S F (t) '-Rei p i (t)・5i-Ksf
Scream...(2) RM(t)' = EPi(t) ・
51-Krm1 φHi (3) is calculated. Here, Si is the area represented by point i, K
ym4i is the vector coefficient of the yawing moment at point i, Ksf+i is the vector coefficient of side force at point i, Kr[lI#i is the vector coefficient of rolling moment at point i, Li is the arm of the yawing moment at point i The length, Hl is the arm length of the low 1 non-long moment at point i.
上記式(1)〜(3)に示す演算がコンピュータ22で
算出されて時刻tでの疑似ヨーイングモーメントYM(
t)′、疑似サイドフォース5F(t)’。The calculations shown in equations (1) to (3) above are calculated by the computer 22, and the pseudo yawing moment YM(
t)', pseudo side force 5F(t)'.
= 6 − 疑似ローリングモーメントRM(t)′が算出される。= 6 - A pseudo rolling moment RM(t)' is calculated.
そして、さらに上記式(1)〜(3)にヨーイングモー
メントの補正係数K ym、サイドフォースの補正係数
K sf、ローリングモーメントの補正係数Krmが積
算されてヨーイングモーメントYM(t)、サイドフォ
ースS F (t) 、ローリングモーメントRM (
t)が算出されて出力装置23から出力されるつまり、
YM(t)=Kym−YM(t)’ ・・・
(4)S F (t) = Ksf’−8F (t)
’ ・=(5)RM(t)=Krm−RM(
t)’ −(6)が算出される。上記補正係
数K ym、 K sf’、 K rmは風洞試験にお
いて車′両表面に加わる圧力を積分して得られる力と実
際の力との関係を予め求めておいて決定される。Then, the yawing moment correction coefficient K ym, the side force correction coefficient K sf, and the rolling moment correction coefficient Krm are added to the above equations (1) to (3) to obtain the yawing moment YM(t) and the side force SF. (t), rolling moment RM (
t) is calculated and output from the output device 23, that is, YM(t)=Kym-YM(t)'...
(4) S F (t) = Ksf'-8F (t)
' ・=(5)RM(t)=Krm−RM(
t)′−(6) is calculated. The correction coefficients K ym, K sf', and K rm are determined by previously determining the relationship between the force obtained by integrating the pressure applied to the surface of the vehicle and the actual force in a wind tunnel test.
[発明の効果]
以上詳述したように本発明によれば、車両が実際に横風
帯を通過したときの車両が受ける過渡的空気入力を算出
することができるので実走行中の様々な空気外乱により
生ずる空気入力の測定が可能となり、横風を受けた場合
の走行安定性の向上に大いに寄与することができる車両
への過渡的空気入力計測方法を提供することができる。[Effects of the Invention] As detailed above, according to the present invention, it is possible to calculate the transient air input received by the vehicle when the vehicle actually passes through a crosswind belt, so that various air disturbances during actual driving can be calculated. Therefore, it is possible to provide a method for measuring transient air input to a vehicle, which can greatly contribute to improving running stability when subjected to crosswinds.
第1図は本発明の一実施例に係る計測方法を示す図、第
2図は同実施例に係るヨーイングモーメント、サイドフ
ォース、ローリングモーメントの算出方法を示すブロッ
ク図、第3図は圧力センサの設置場所を示す図である。
12・・・増幅器、13・・・データ記憶部、21・・
・A/D変而器面22・・・コンピュータ、23・・・
出力装置。Fig. 1 is a diagram showing a measurement method according to an embodiment of the present invention, Fig. 2 is a block diagram showing a method of calculating yawing moment, side force, and rolling moment according to the same embodiment, and Fig. 3 is a diagram showing a method of calculating a yawing moment, side force, and rolling moment according to the same embodiment. It is a figure showing an installation place. 12...Amplifier, 13...Data storage unit, 21...
・A/D transformer surface 22...computer, 23...
Output device.
Claims (1)
、該計測部分内の計測点毎に1つの圧力センサが設けら
れ、計測点毎に予め設定されたベクトル係数K′を有す
る車両を横風帯を通過させ、少なくとも上記各計測部分
での圧力センサにより検出される圧力Piと上記面積S
iとベクトル係数にK′とを積算した値の総和を算出す
ることにより車両走行中の時間毎の擬似的空気入力を測
定し、風洞試験において算出された擬似的空気入力と実
際に車両に作用する空気入力との関係に基いて上記走行
中の擬似的空気入力を補正して実際に車両走行中に時間
毎に作用する空気入力を計測するようにしたことを特徴
とする車両への過渡的空気入力計測方法。The outer surface is divided into a plurality of measurement signal portions each having an area Si, one pressure sensor is provided at each measurement point within the measurement portion, and the vehicle has a preset vector coefficient K′ for each measurement point. The pressure Pi detected by the pressure sensor at least at each measurement portion and the area S
By calculating the sum of i and the vector coefficient multiplied by K', the simulated air input is measured at each hour while the vehicle is running, and the simulated air input calculated in the wind tunnel test is compared with the value that actually acts on the vehicle. The present invention is characterized in that the pseudo air input during driving is corrected based on the relationship with the air input that is applied to the vehicle, and the air input that actually acts on the vehicle at each time while the vehicle is running is measured. Air input measurement method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9687287A JPS63262542A (en) | 1987-04-20 | 1987-04-20 | Method for measuring transitional air input to vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9687287A JPS63262542A (en) | 1987-04-20 | 1987-04-20 | Method for measuring transitional air input to vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63262542A true JPS63262542A (en) | 1988-10-28 |
Family
ID=14176520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9687287A Pending JPS63262542A (en) | 1987-04-20 | 1987-04-20 | Method for measuring transitional air input to vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63262542A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0341447A2 (en) * | 1988-05-11 | 1989-11-15 | Daimler-Benz Aktiengesellschaft | Device for determining the influence of cross wind on vehicles |
CN104210996A (en) * | 2014-08-01 | 2014-12-17 | 安徽省地坤汽车天窗科技有限公司 | Lifting mechanism for testing wind loading mechanism of skylight glass of automobile skylight assembly |
-
1987
- 1987-04-20 JP JP9687287A patent/JPS63262542A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0341447A2 (en) * | 1988-05-11 | 1989-11-15 | Daimler-Benz Aktiengesellschaft | Device for determining the influence of cross wind on vehicles |
CN104210996A (en) * | 2014-08-01 | 2014-12-17 | 安徽省地坤汽车天窗科技有限公司 | Lifting mechanism for testing wind loading mechanism of skylight glass of automobile skylight assembly |
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