JPH06148008A - Inspection equipment for anti-lock brake - Google Patents
Inspection equipment for anti-lock brakeInfo
- Publication number
- JPH06148008A JPH06148008A JP4296074A JP29607492A JPH06148008A JP H06148008 A JPH06148008 A JP H06148008A JP 4296074 A JP4296074 A JP 4296074A JP 29607492 A JP29607492 A JP 29607492A JP H06148008 A JPH06148008 A JP H06148008A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- torque
- flywheel
- torque meter
- brake
- 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.)
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Links
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車に搭載したアン
チロックブレーキの良否を判定するアンチロックブレー
キの検査装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antilock brake inspection device for determining the quality of an antilock brake mounted on an automobile.
【０００２】[0002]
【従来の技術】本願出願人は、先に特願平３−６９９９
６号により、自動車の車輪を乗せるローラと、ローラに
順に直列に連結されるトルクメータとフライホイールと
を備え、ローラ上で自動車を走行させてブレーキングし
たときにトルクメータで検出されるトルクの変化に基い
てアンチロックブレーキの良否を判定するようにした装
置を提案した。アンチロックブレーキは、ブレーキ圧の
増圧で車輪の減速度が所定の設定値を上回ったときブレ
ーキ圧の増圧を停止し、車輪速度が所要の減速特性に従
って定められる基準速度を下回ったところでブレーキ圧
を減圧し、この減圧により減速度が上記設定値を下回っ
たときブレーキ圧の減圧を停止し、車輪速度が基準速度
を上回ったところでブレーキ圧を増圧し、以後上記の作
動を繰返すように構成されている。上記装置によれば、
車輪即ちこれを乗せるローラの減速度の変化によりトル
クメータの測定軸がローラとフライホイールとの間でね
じられ、トルクメータで検出されるトルクは車輪の減速
度に応じて変化するようになり、トルクの変化からアン
チロックブレーキが正常に働いたか否かを判定できる。2. Description of the Related Art The applicant of the present invention previously filed Japanese Patent Application No. 3-6999.
No. 6 includes a roller on which a wheel of an automobile is placed, a torque meter and a flywheel which are sequentially connected to the roller in series, and the torque detected by the torque meter when the automobile is run on the roller and braking is performed. We proposed a device that determines the quality of the anti-lock brake based on changes. The anti-lock brake stops the pressure increase of the brake pressure when the wheel deceleration exceeds the preset value due to the increase of the brake pressure, and brakes when the wheel speed falls below the reference speed determined according to the required deceleration characteristics. The pressure is reduced, and when the deceleration falls below the above set value due to this pressure reduction, the brake pressure reduction is stopped, and when the wheel speed exceeds the reference speed, the brake pressure is increased and the above operation is repeated thereafter. Has been done. According to the above device,
Due to the change in the deceleration of the wheel, that is, the roller on which the wheel is placed, the measuring axis of the torque meter is twisted between the roller and the flywheel, and the torque detected by the torque meter changes according to the deceleration of the wheel. It can be determined from the change in torque whether the anti-lock brake worked normally.
【０００３】[0003]
【発明が解決しようとする課題】ところで、アンチロッ
クブレーキが正常に働くとほぼ一定の応答周波数でブレ
ーキ圧の増減制御が繰返されるが、ローラの慣性モーメ
ントの大きさに応じてブレーキ圧の増減に伴う車輪の減
速度の変化度合が変化し、応答周波数も変化してしま
う。そのため、応答周波数が検査に適した値になるよう
にローラの慣性モーメントを設定する必要があるが、こ
れだけではアンチロックブレーキの良否判定に必要な正
確なトルク波形を得られないことが判明した。即ち、本
来は図３（ａ）に示す如きトルク波形が得られるはずで
あるのに、図３（ｂ）に示す如くトルク波形が間歇的に
零レベルに低下し、トルク波形が正規の波形にならない
ことがある。本願発明者は、鋭意努力の結果その原因は
ねじり振動の共振現象にあることを究明するに至った。
これを詳述するに、ローラとトルクメータとフライホイ
ールとを夫々慣性重量とするねじり振動系を考え、図２
（ａ）に示す如く、ローラとトルクメータとフライホイ
ールの夫々の慣性モーメントをＩ1、Ｉ2、Ｉ3、ローラ
とトルクメータとの間の連結部及びトルクメータとフラ
イホイールとの間の連結部の夫々のねじり方向のばね定
数をｋ1、ｋ2とすると、このねじり振動系の固有角振動
数ωｎは、下記数１で表わされる。By the way, when the antilock brake operates normally, the control of increasing / decreasing the brake pressure is repeated at a substantially constant response frequency. However, the increase / decrease of the brake pressure is increased or decreased depending on the magnitude of the inertia moment of the roller. As a result, the degree of change in the deceleration of the wheels changes, and the response frequency also changes. Therefore, it is necessary to set the inertia moment of the roller so that the response frequency becomes a value suitable for the inspection, but it has been found that it is not possible to obtain the accurate torque waveform required for the pass / fail judgment of the antilock brake by this alone. That is, although the torque waveform as shown in FIG. 3 (a) should be obtained originally, the torque waveform intermittently drops to the zero level as shown in FIG. 3 (b), and the torque waveform becomes a normal waveform. Sometimes it doesn't. As a result of earnest efforts, the inventor of the present application has found out that the cause is a resonance phenomenon of torsional vibration.
To explain this in detail, consider a torsional vibration system in which a roller, a torque meter, and a flywheel have inertia weights, respectively.
As shown in (a), the moments of inertia of the roller, the torque meter, and the flywheel are I 1 , I 2 , and I 3 , the connection portion between the roller and the torque meter, and the connection between the torque meter and the flywheel. Assuming that the spring constants of the respective parts in the torsional direction are k 1 and k 2 , the natural angular frequency ωn of this torsional vibration system is expressed by the following formula 1.
【０００４】[0004]
【数１】 [Equation 1]
【０００５】ωｎの大きい解をω1、小さい解をω2とす
ると、ω1は図２（ｂ）に示す如くローラとフライホイ
ールとが互に逆方向にねじれるような振動の固有角振動
数となり、ω2は図２（ｃ）に示す如くローラとフライ
ホイールとが同方向にねじれるような振動の固有角振動
数となる。図３（ｂ）に示すようなトルク波形になるの
は、ω2に対応する固有振動数ｆ2（＝ω2／２π）がブ
レーキ圧の増減制御の応答周波数にほぼ等しくなり、本
来はトルクのピークが現われるところでローラ及びフラ
イホイールが同方向にねじれ、トルクメータで検出され
るトルクが低下するためである。Assuming that the solution with a large ωn is ω 1 and the solution with a small ω n is ω 2 , ω 1 is the natural angular frequency of vibration such that the roller and the flywheel are twisted in opposite directions as shown in FIG. 2B. Therefore, ω 2 is a natural angular frequency of vibration such that the roller and the flywheel are twisted in the same direction as shown in FIG. 2C. Figure 3 (b) to become a torque waveform shown is the natural frequency f 2 corresponding to ω 2 (= ω 2 / 2π ) is approximately equal to the response frequency of the increase and decrease control of the brake pressure, originally torque This is because the roller and the flywheel are twisted in the same direction where the peak of appears, and the torque detected by the torque meter decreases.
【０００６】本発明は、以上の点に鑑み、ねじり振動の
共振現象の影響を受けることなく、アンチロックブレー
キによるブレーキ圧の増減制御に応じた正確なトルク変
化を計測し得るようにした検査装置を提供することをそ
の目的としている。In view of the above points, the present invention is an inspection apparatus capable of measuring an accurate torque change according to an increase / decrease control of a brake pressure by an antilock brake without being affected by the resonance phenomenon of torsional vibration. Its purpose is to provide.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成すべく、
本発明は、自動車の車輪を乗せるローラと、ローラに順
に直列に連結されるトルクメータとフライホイールとを
備え、ローラ上で自動車を走行させてブレーキングした
ときにトルクメータで検出されるトルクの変化に基いて
アンチロックブレーキの良否を判定する装置において、
ローラとトルクメータとの間の連結部材及びトルクメー
タとフライホイールとの間の連結部材のねじり方向のば
ね定数を、ローラとトルクメータとフライホイールとを
夫々慣性質量とするねじり振動系の固有振動数がアンチ
ロックブレーキによるブレーキ圧制御の標準的な応答周
波数から外れるように設定したことを特徴とする。[Means for Solving the Problems] In order to achieve the above object,
The present invention includes a roller on which a wheel of an automobile is placed, a torque meter and a flywheel that are sequentially connected to the roller in series, and the torque detected by the torque meter when the automobile is run on the roller and braking is performed. In the device that determines the quality of the antilock brake based on the change,
Natural vibration of a torsional vibration system in which a roller, a torque meter, and a flywheel have inertia masses as spring constants in a torsional direction of a connecting member between a roller and a torque meter and a connecting member between a torque meter and a flywheel, respectively. The number is set so as to deviate from the standard response frequency of the brake pressure control by the antilock brake.
【０００８】[0008]
【作用】ねじり振動系の固有振動数がブレーキ圧制御の
標準的な応答周波数から外れた値になっているため、共
振現象が発生せず、トルクメータで検出されるトルクは
アンチロックブレーキによるブレーキ圧の増減制御に応
じて正確に変化する。[Function] Since the natural frequency of the torsional vibration system is a value outside the standard response frequency of the brake pressure control, resonance phenomenon does not occur, and the torque detected by the torque meter is braked by the antilock brake. It changes accurately according to the pressure increase / decrease control.
【０００９】[0009]
【実施例】図１はアンチロックブレーキの検査装置を示
し、該装置は、前輪用の左右１対のローラ１1、１1と、
後輪用の左右１対のローラ１2、１2とを備え、前輪用の
ローラ１1、１1間に該各ローラ１1を夫々クラッチ２1を
介して連結したギアボックス３1と、後輪用のローラ
１2、１2間に該各ローラ１2を夫々クラッチ２2を介して
連結したギアボックス３2とを配置し、両ギアボックス
３1、３2をドライブシャフト４を介して連結し、前記各
ローラに各車輪を乗せて自動車を走行させたとき、駆動
輪たる前輪の回転によりローラ１1とクラッチ２1とギア
ボックス３1とドライブシャフト４とギアボックス３2と
クラッチ２2とローラ１2とを介して後輪が回転されるよ
うにした。各ローラ１1、１2は、同期回転するようにベ
ルト５を介して連結した前後１対の分割ローラ１ａ、１
ｂで構成されており、両分割ローラ１ａ、１ｂの外周面
の摩擦係数を大きく設定すると共に、両分割ローラ１
ａ、１ｂの回転慣性モーメントを互に等しく且つ合計の
回転慣性モーメントが各車輪の回転慣性モーメントより
若干大きくなるように設定し、ブレーキ作動時に各車輪
が各分割ローラ１ａ、１ｂに対し実質的にスリップしな
いようにした。又、各ローラ１1、１2の後側の分割ロー
ラ１ｂにフライホイール６を連結し、該分割ローラ１ｂ
とフライホイール６との間にトルクメータ７を介設し
て、各ローラ１1、１2の減速度をトルクとして検出し、
トルクメータ７の検出信号をマイクロコンピュータから
成るモニター回路８に入力して、後記する検査を行うよ
うにした。図中７ａはトルクメータ７と分割ローラ１ｂ
とを連結する継手、７ｂはトルクメータ７とフライホイ
ール６とを連結する継手である。尚、前輪用のローラ１
1、１1は固定台９上に、又後輪用のローラ１2、１2は前
後動自在な摺動台１０上に設けられており、前記ドライ
ブシャフト４の後部をスリーブ４ａとこれに嵌合するス
プライン軸４ｂとで伸縮自在な構造とし、摺動台１０の
動きにより自動車の軸距に合わせて前輪用のローラ１1
と後輪用のローラ１2との間の距離を調整し得るように
した。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an anti-lock brake inspection device, which comprises a pair of left and right rollers 1 1 , 1 1 for front wheels,
And a roller 1 2, 1 2 of a pair of right and left rear wheel, a gear box 3 1 obtained by connecting the roller 1 1, 1 respective roller 1 1 between 1 for the front wheels through a respective clutch 2 1, A gear box 3 2 in which the respective rollers 1 2 are connected via a clutch 2 2 is arranged between the rear wheel rollers 1 2 and 1 2 , and both gear boxes 3 1 and 3 2 are connected via a drive shaft 4. When the vehicle is run with the wheels mounted on the rollers, the front wheels, which are the drive wheels, rotate to rotate the rollers 1 1 , the clutch 2 1 , the gearbox 3 1 , the drive shaft 4, the gearbox 3 2 and the clutch. The rear wheel is made to rotate via 2 2 and the roller 1 2 . Each of the rollers 1 1 and 1 2 is a pair of front and rear split rollers 1 a and 1 a connected via a belt 5 so as to rotate synchronously.
b, and the friction coefficient of the outer peripheral surface of both split rollers 1a and 1b is set to be large, and
The rotational inertia moments of a and 1b are set to be equal to each other and the total rotational moment of inertia is set to be slightly larger than the rotational inertia moment of each wheel. I tried not to slip. Further, connecting the flywheel 6 to the rollers 1 1, 1 2 of the rear split roller 1b, the divided roller 1b
And then interposed a torque meter 7 between the flywheel 6, it detects the rollers 1 1, 1 2 of the deceleration as a torque,
The detection signal of the torque meter 7 is input to the monitor circuit 8 composed of a microcomputer to perform the inspection described later. In the figure, 7a is a torque meter 7 and a split roller 1b.
The joint 7b connects the torque meter 7 and the flywheel 6. Incidentally, the roller 1 for the front wheels
1, 1 1 on the fixed base 9, and the roller 1 2 for the rear wheels, 1 2 is provided on the moving freely slide board 10 before and after the rear portion of the drive shaft 4 to the sleeve 4a It has a structure that allows it to expand and contract with the mating spline shaft 4b, and the movement of the sliding table 10 allows the front wheel roller 1 1 to match the axial distance of the automobile.
The distance between the rollers 1 2 for the rear wheels and the like can be adjusted.
【００１０】ブレーキ検査に際しては、各車輪を各ロー
ラ１1、１2上に乗せて自動車を走行させ、所定の速度に
達したとき、各ローラ１1、１2のクラッチ２1、２2をオ
フして各ローラ１1、１2が夫々独立して回転されるよう
にし、この状態でブレーキペダルを踏む。そして、この
ブレーキ時にトルクメータ７で検出されるトルクに基い
てアンチロックブレーキが正常に働いたか否かを判定す
る。In the brake inspection, the wheels are placed on the rollers 1 1 and 1 2 to drive the automobile, and when a predetermined speed is reached, the clutches 2 1 and 2 2 of the rollers 1 1 and 1 2 are engaged. The rollers are turned off so that the rollers 1 1 and 1 2 are independently rotated, and the brake pedal is depressed in this state. Then, based on the torque detected by the torque meter 7 during this braking, it is determined whether or not the antilock brake has worked normally.
【００１１】各ローラ１1、１2を構成する両分割ローラ
１ａ、１ｂ及びベルト５の合計慣性モーメントをＩ1、
トルクメータ７の慣性モーメントをＩ2、フライホイー
ル６の慣性モーメントをＩ3、各ローラとトルクメータ
７との間の連結部材たる継手７ａのねじり方向のばね定
数をｋ1、トルクメータ７とフライホイール６との間の
連結部材たる継手７ｂのねじり方向のばね定数をｋ2と
し、図２（ｂ）の如くローラとフライホイールとが互い
に逆方向にねじれるような振動の固有振動数ｆ1と、図
２（ｃ）の如くローラとフライホイールとが共に同方向
にねじれるような振動の固有振動数ｆ2とを上記数１か
ら求めた場合に、ｋ1、ｋ2を１１７kg・ｍ／degに設定
したとき、 ｆ1≒３６Ｈｚ ｆ2≒１０Ｈｚ となり、ｋ1、ｋ2を９００kg・ｍ／degに設定したと
き、 ｆ1≒１００Ｈｚ ｆ2≒３０Ｈｚ となる装置を用いてブレーキの検査を行った。ここで、
ローラ上でブレーキングしたときのアンチロックブレー
キによるブレーキ圧制御の標準的な応答周波数は数Ｈｚ
〜２０Ｈｚ程度であり、ｋ1、ｋ2を１１７kg・ｍ／deg
に設定した場合には、ｆ2が応答周波数にほぼ一致する
ため、共振現象を生じてトルク波形は図３（ｂ）に示す
通り不正確なものになる。一方、ｋ1、ｋ2を９００kg・
ｍ／degに設定した場合には、ｆ1、ｆ2が共に応答周波
数から大きく外れた値になり、共振現象の発生が防止さ
れてトルク波形は図３（ａ）に示す通りブレーキ圧の増
減に応じて正確に変化する。かくて、トルクメータ７で
検出されるトルク波形に基いてアンチロックブレーキの
良否を正確に判定できる。[0011] both split roller 1a constituting the rollers 1 1, 1 2, the total moment of inertia of 1b and the belt 5 I 1,
The moment of inertia of the torque meter 7 is I 2 , the moment of inertia of the flywheel 6 is I 3 , the spring constant in the torsional direction of the joint 7a, which is a connecting member between each roller and the torque meter 7, is k 1 , the torque meter 7 and the fly meter 6 are fly. The spring constant of the joint 7b, which is a connecting member between the wheel 6 and the wheel 6, in the torsional direction is k 2, and the natural frequency f 1 of the vibration such that the roller and the flywheel are twisted in opposite directions as shown in FIG. As shown in FIG. 2C, when the natural frequency f 2 of the vibration in which both the roller and the flywheel are twisted in the same direction is calculated from the above formula 1, k 1 and k 2 are 117 kg · m / deg. When set to, f 1 ≈ 36 Hz f 2 ≈ 10 Hz, and when k 1 and k 2 are set to 900 kg · m / deg, brake inspection is performed using a device that f 1 ≈ 100 Hz f 2 ≈ 30 Hz It was here,
The standard response frequency of the brake pressure control by the anti-lock brake when braking on the roller is several Hz.
Is about 20 Hz, and k 1 and k 2 are 117 kg · m / deg
When set to, f 2 almost coincides with the response frequency, so that a resonance phenomenon occurs and the torque waveform becomes inaccurate as shown in FIG. 3B. On the other hand, k 1 and k 2 are 900 kg
When m / deg is set, both f 1 and f 2 are values that deviate significantly from the response frequency, the occurrence of resonance phenomenon is prevented, and the torque waveform changes as shown in FIG. Accurately changes according to. Thus, the quality of the antilock brake can be accurately determined based on the torque waveform detected by the torque meter 7.
【００１２】[0012]
【発明の効果】以上説明から明らかなように、本発明に
よれば、アンチロックブレーキによるブレーキ圧の増減
制御に伴うローラの減速度の変化をトルクメータにより
トルク変化として共振現象の影響を受けることなく正確
に検出でき、アンチロックブレーキの良否判定の正確性
を向上できる。As is apparent from the above description, according to the present invention, the change of the deceleration of the roller due to the increase / decrease control of the brake pressure by the antilock brake is affected by the resonance phenomenon as the torque change by the torque meter. It can be accurately detected without the need to improve the accuracy of the quality judgment of the antilock brake.
【図１】 本発明装置の一例の平面図FIG. 1 is a plan view of an example of the device of the present invention.
【図２】 （ａ）はローラとトルクメータとフライホイ
ールとから成るねじり振動系の模式図、（ｂ）（ｃ）は
この振動系の振動形態を示す図2A is a schematic diagram of a torsional vibration system including a roller, a torque meter, and a flywheel, and FIGS. 2B and 2C are diagrams showing vibration modes of this vibration system.
【図３】 （ａ）は本発明装置によって検出されるトル
ク波形を示す図、（ｂ）は比較装置によって検出される
トルク波形を示す図3A is a diagram showing a torque waveform detected by the device of the present invention, and FIG. 3B is a diagram showing a torque waveform detected by a comparison device.
【符号の説明】 １1、１2 ローラ ６ フライホ
イール ７ トルクメータ ７ａ、７ｂ 継手（連結部
材）[Explanation of reference numerals] 1 1 1 2 roller 6 flywheel 7 torque meter 7a, 7b joint (connecting member)
Claims (1)
に順に直列に連結されるトルクメータとフライホイール
とを備え、ローラ上で自動車を走行させてブレーキング
したときにトルクメータで検出されるトルクの変化に基
いてアンチロックブレーキの良否を判定する装置におい
て、ローラとトルクメータとの間の連結部材及びトルク
メータとフライホイールとの間の連結部材のねじり方向
のばね定数を、ローラとトルクメータとフライホイール
とを夫々慣性質量とするねじり振動系の固有振動数がア
ンチロックブレーキによるブレーキ圧制御の標準的な応
答周波数から外れるように設定したことを特徴とするア
ンチロックブレーキの検査装置。1. A torque that is detected by a torque meter when a vehicle is mounted on the roller, a torque meter and a flywheel that are sequentially connected to the roller in series are provided, and the vehicle travels on the roller and is braked. In a device for determining the quality of an anti-lock brake based on the change of, the spring constant in the torsional direction of the connecting member between the roller and the torque meter and the connecting member between the torque meter and the flywheel is determined by the roller and the torque meter. An anti-lock brake inspection device, characterized in that the natural frequencies of a torsional vibration system having inertia masses of a flywheel and a flywheel are set to deviate from the standard response frequency of brake pressure control by the antilock brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4296074A JP2587357B2 (en) | 1992-11-05 | 1992-11-05 | Inspection device for anti-lock brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4296074A JP2587357B2 (en) | 1992-11-05 | 1992-11-05 | Inspection device for anti-lock brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06148008A true JPH06148008A (en) | 1994-05-27 |
| JP2587357B2 JP2587357B2 (en) | 1997-03-05 |
Family
ID=17828782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4296074A Expired - Fee Related JP2587357B2 (en) | 1992-11-05 | 1992-11-05 | Inspection device for anti-lock brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2587357B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806997A (en) * | 2017-10-17 | 2018-03-16 | 北京新能源汽车股份有限公司 | Vehicle brake test bench |
| CN107884204A (en) * | 2017-10-17 | 2018-04-06 | 北京新能源汽车股份有限公司 | Vehicle brake test bench |
-
1992
- 1992-11-05 JP JP4296074A patent/JP2587357B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806997A (en) * | 2017-10-17 | 2018-03-16 | 北京新能源汽车股份有限公司 | Vehicle brake test bench |
| CN107884204A (en) * | 2017-10-17 | 2018-04-06 | 北京新能源汽车股份有限公司 | Vehicle brake test bench |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2587357B2 (en) | 1997-03-05 |
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