JPH0976889A - Wheel speed correcting method - Google Patents
Wheel speed correcting methodInfo
- Publication number
- JPH0976889A JPH0976889A JP7259295A JP25929595A JPH0976889A JP H0976889 A JPH0976889 A JP H0976889A JP 7259295 A JP7259295 A JP 7259295A JP 25929595 A JP25929595 A JP 25929595A JP H0976889 A JPH0976889 A JP H0976889A
- Authority
- JP
- Japan
- Prior art keywords
- wheel speed
- wheel
- tire
- mini
- measured
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2240/00—Monitoring, detecting wheel/tire behaviour; counteracting thereof
- B60T2240/08—Spare wheel detection; Adjusting brake control in case of spare wheel use
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車両の車輪速の補
正に関するものであり、特にミニタイヤを予備に備えた
車両の車輪速の補正に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle wheel speed correction, and more particularly to a vehicle wheel speed correction for a vehicle equipped with a spare mini tire.
【０００２】[0002]
【従来の技術】ミニタイヤを予備に備えた車両のアンチ
ロックブレーキ制御装置において、ミニタイヤを装着し
た際、ミニタイヤはノーマルタイヤに比べて径が小さい
ため、測定した車輪速がノーマルタイヤに比べて大きく
出てしまい、正確なアンチロックブレーキ制御を行うこ
とができない。そこで、従来、複数の車輪速を求め、こ
れらの差を求め、その差から補正係数を決めている。2. Description of the Related Art In an anti-lock brake control system for a vehicle equipped with a spare mini tire, when the mini tire is mounted, the diameter of the mini tire is smaller than that of a normal tire. Therefore, the anti-lock brake control cannot be performed accurately. Therefore, conventionally, a plurality of wheel speeds are obtained, the difference between them is obtained, and the correction coefficient is determined from the difference.
【０００３】しかし、以下のような問題点がある。 ＜イ＞旋回時は、全てノーマルタイヤであっても、内外
輪で速度差がでるためにミニタイヤと誤検出して不必要
な補正をすることになる。その結果、アンチロックブレ
ーキ制御中、推定車体速が低めに計算され、スリップが
深目になり、車両が不安定になる。 ＜ロ＞旋回時に、ミニタイヤが内輪になると、車輪速が
遅くなるためにミニタイヤの検出ができなくなるため
に、ミニタイヤの補正ができない。その結果、アンチロ
ックブレーキ制御に入ると、推定車体速が実際より高く
計算されるため、スリップが大きいと誤判断してブレー
キ力を緩め、停止距離が長くなる。 ＜ハ＞２輪以上が他輪より車輪速が速い時は、旋回又は
駆動輪がオーバースピンをしていると考えられるので、
ミニタイヤの補正を中断すると、もし、ミニタイヤを装
着しており、イグニッション・オン直後から上記旋回又
は駆動輪オーバースピンにより、ミニタイヤ補正が中断
したままアンチロックブレーキ制御に入ると、推定車体
速が実際より高く計算されるため、スリップが大きいと
誤判断してブレーキ力を緩め、停止距離が長くなる。However, there are the following problems. <B> When turning, even if the tires are all normal tires, a difference in speed will be generated between the inner and outer wheels, so that the tires will be erroneously detected as a mini tire and an unnecessary correction will be made. As a result, during the anti-lock brake control, the estimated vehicle speed is calculated to be low, the slip becomes deep, and the vehicle becomes unstable. <B> When the mini tire becomes the inner wheel during turning, the wheel speed becomes slow and the mini tire cannot be detected. Therefore, the mini tire cannot be corrected. As a result, when the antilock brake control is entered, the estimated vehicle speed is calculated higher than the actual vehicle speed, so the brake force is loosened by misjudging that the slip is large, and the stopping distance becomes longer. <C> When two or more wheels are faster than the other wheels, it is considered that turning or driving wheels are overspinning.
If the mini tire correction is interrupted, if the mini tire is installed and the anti-lock brake control is entered with the mini tire correction suspended due to the above turning or driving wheel overspin immediately after the ignition is turned on, the estimated vehicle speed will be reduced. Is calculated higher than the actual value, the brake force is loosened by misjudging that the slip is large, and the stopping distance becomes longer.
【０００４】[0004]
＜イ＞本発明は、ミニタイヤを予備に備えた車両におい
て、正確なタイヤの径の補正を行うことにある。 ＜ロ＞本発明は、ミニタイヤを予備に備えた車両におい
て、旋回状態でも正確なタイヤの径の補正を行うことに
ある。<A> The present invention is to accurately correct the diameter of a tire in a vehicle equipped with a spare mini tire. <B> The present invention is to accurately correct the tire diameter even in a turning state in a vehicle equipped with a spare mini tire.
【０００５】[0005]
【課題を解決するための手段】本発明は、ミニタイヤを
予備に備えた車両の車輪速補正方法において、各車輪に
ついて車輪速センサからの信号に基づいて測定車輪速を
求め、該測定車輪速と、車両のホイールベース、トレッ
ドおよび車輪速の関係式とから推定車輪速を求め、該測
定車輪速と該推定車輪速とを比較してミニタイヤの装着
を判定し、装着されたミニタイヤに対して車輪速の補正
を行うことを特徴とする車輪速補正方法にある。SUMMARY OF THE INVENTION The present invention is a method for correcting wheel speed of a vehicle equipped with a spare mini tire, wherein a measured wheel speed is obtained for each wheel based on a signal from a wheel speed sensor, and the measured wheel speed is determined. And, the wheelbase of the vehicle, the tread and the relational expression of the wheel speed, and obtain the estimated wheel speed, and compare the measured wheel speed and the estimated wheel speed to determine the mounting of the mini tire, and to the mounted mini tire. On the other hand, a wheel speed correction method is characterized in that the wheel speed is corrected.
【０００６】[0006]
【発明の実施の形態】以下、図面を用いて本発明の実施
の形態を説明する。 ＜イ＞ブレーキ制御装置（図１、図２） 通常ブレーキ制御では、ブレーキペダル１１が踏み込ま
れると、主リザーバ１３からブレーキ液を供給し、マス
タシリンダ１２でブレーキ液圧を発生し、その液圧は、
主液圧流路上の入口弁２３及び各車輪（１〜４）のホイ
ールシリンダ１４に付与され、ブレーキ制御が行われ
る。Embodiments of the present invention will be described below with reference to the drawings. <A> Brake control device (FIGS. 1 and 2) In the normal brake control, when the brake pedal 11 is depressed, the brake fluid is supplied from the main reservoir 13 to generate the brake fluid pressure in the master cylinder 12. Is
The brake control is performed by being applied to the inlet valve 23 on the main hydraulic pressure passage and the wheel cylinder 14 of each wheel (1 to 4).
【０００７】アンチロックブレーキ制御では、例えばブ
レーキが強くかかり車輪がスリップすると、アンチロッ
クブレーキ制御装置（ＡＢＳ制御装置）１０は車輪速セ
ンサ３１からの信号を基に電子制御装置３０により、Ａ
ＢＳ液圧ユニット２０を制御して各車輪（１〜４）に対
してアンチロックブレーキ制御を行う。なお、電子制御
装置３０は、専用ハード装置、又は、入力装置、処理装
置、出力装置など一般のコンピュータ装置の構成をとる
ことができる。In the anti-lock brake control, for example, when the brakes are strongly applied and the wheels slip, the anti-lock brake control device (ABS control device) 10 controls the electronic control device 30 based on the signal from the wheel speed sensor 31 to
The BS hydraulic unit 20 is controlled to perform antilock brake control for each wheel (1-4). The electronic control device 30 can be configured as a dedicated hardware device or a general computer device such as an input device, a processing device, and an output device.
【０００８】＜ロ＞ブレーキ液圧系統の構成（図２） ブレーキ液圧系統は、図２にＸ配管の例を示してあり、
マスタシリンダ１２を介して、独立した２系統の第１液
圧回路２１と第２液圧回路２２を有している。主リザー
バ１３は、マスタシリンダ１２に供給するブレーキ液の
液溜めである。第１液圧回路２１は、入口弁２３を介し
て右前輪２と左後輪３のホイールシリンダ１４に接続さ
れ、出口弁２４を介して補助リザーバ２７に接続されて
いる。同様に、第２液圧回路２２は、入口弁２３を介し
て右後輪４と左前輪１のホイールシリンダ１４に接続さ
れ、出口弁２４を介して補助リザーバ２７に接続されて
いる。<B> Configuration of brake hydraulic system (FIG. 2) The brake hydraulic system is shown in FIG.
It has two independent first hydraulic circuit 21 and second hydraulic circuit 22 via the master cylinder 12. The main reservoir 13 is a reservoir of brake fluid supplied to the master cylinder 12. The first hydraulic circuit 21 is connected to the wheel cylinders 14 of the right front wheel 2 and the left rear wheel 3 via the inlet valve 23, and is connected to the auxiliary reservoir 27 via the outlet valve 24. Similarly, the second hydraulic circuit 22 is connected to the wheel cylinders 14 of the right rear wheel 4 and the left front wheel 1 via the inlet valve 23, and is connected to the auxiliary reservoir 27 via the outlet valve 24.
【０００９】＜ハ＞旋回時の各車輪速の関係（図３） 車両が旋回している時は、各車輪速は異なるが、各車輪
速は、図３のように左旋回の場合、旋回中心の回りに各
旋回半径（Ｒ1 、Ｒ2 、Ｒ3 、Ｒ4 ）で旋回することか
ら、ホイールベース（ａ）とトレッド（ｂ）を用いて以
下の関係式（式４乃至式７）で表すことができる。ここ
で、ωは、車両が旋回する旋回中心の角速度である。ま
た、右旋回の場合は、左右を反対にするだけで同様の関
係式が得られる。<C> Relationship between wheel speeds during turning (FIG. 3) When the vehicle is turning, the wheel speeds are different, but the wheel speeds are left when turning left as shown in FIG. Since the vehicle turns with each turning radius (R1, R2, R3, R4) around the center, it can be expressed by the following relational expressions (Equations 4 to 7) using the wheel base (a) and the tread (b). it can. Here, ω is the angular velocity of the turning center around which the vehicle turns. Further, in the case of turning right, the same relational expression can be obtained only by reversing the left and right.
【式４】 (Equation 4)
【式５】 [Formula 5]
【式６】 [Formula 6]
【式７】 [Formula 7]
【００１０】＜ニ＞ミニタイヤの装着 最近の車両では、予備のタイヤとしてノーマルタイヤよ
りも径の小さいミニタイヤを備えている。装着されてい
たノーマルタイヤが破損して、その代わりにミニタイヤ
を装着すると、ミニタイヤはノーマルタイヤより径が小
さいため、車輪速センサの出力は、ノーマルタイヤの場
合より車輪速が大きな値となる。そこで、ミニタイヤを
装着した場合はタイヤの径を補正する必要がある。<D> Mounting of Mini Tires Recent vehicles are equipped with mini tires having a smaller diameter than normal tires as spare tires. If the normal tire that was installed is damaged and the mini tire is installed instead, the mini tire has a smaller diameter than the normal tire, so the output of the wheel speed sensor will have a higher wheel speed than that of the normal tire. . Therefore, when a mini tire is attached, it is necessary to correct the tire diameter.
【００１１】以下に、ブレーキ制御について説明する。 ＜イ＞通常ブレーキ制御 通常ブレーキ制御では、ブレーキペダル１１が踏み込ま
れると、主リザーバ１３からブレーキ液を供給し、マス
タシリンダ１２でブレーキ液圧を発生し、その液圧は、
主液圧流路上の入口弁２３及び各車輪（１〜４）のホイ
ールシリンダ１４に付与され、通常のブレーキ制御が行
われる。The brake control will be described below. <A> Normal brake control In the normal brake control, when the brake pedal 11 is depressed, the brake fluid is supplied from the main reservoir 13 to generate the brake fluid pressure in the master cylinder 12, and the fluid pressure is
The brake is applied to the inlet valve 23 on the main hydraulic pressure passage and the wheel cylinder 14 of each wheel (1 to 4) to perform normal brake control.
【００１２】＜ロ＞アンチロックブレーキ制御の概要 アンチロックブレーキ制御の場合は、ブレーキ液圧は、
戻り流路２９において出口弁２４、ポンプ２５、入口弁
２３の作動により、ホイールシリンダ１４から主液圧流
路II、出口弁２４を介して補助リザーバ２７に排出さ
れ、更に、ポンプ２５（モータ２６）、ダンピングチャ
ンバＤＣを介して主液圧流路Ｉに戻され、入口弁２３、
及び主液圧流路IIを介して車輪のホイールシリンダ１４
に供給される。この制御により、制動時の各車輪のスリ
ップに対してアンチロックブレーキ制御を行うことがで
きる。<B> Overview of anti-lock brake control In the case of anti-lock brake control, the brake fluid pressure is
In the return flow passage 29, the outlet valve 24, the pump 25, and the inlet valve 23 are actuated to discharge from the wheel cylinder 14 to the auxiliary reservoir 27 via the main hydraulic pressure passage II and the outlet valve 24, and further the pump 25 (motor 26). , Returned to the main hydraulic pressure passage I via the damping chamber DC, and the inlet valve 23,
And the wheel cylinder 14 of the wheel through the main hydraulic pressure passage II.
Is supplied to. By this control, anti-lock brake control can be performed against slip of each wheel during braking.
【００１３】以下、ミニタイヤの補正について前輪駆動
車を例にとって説明する（図４）。 ＜イ＞ミニタイヤの装着の検出１ 車両の発進の直後でもアンチロックブレーキ制御を行え
るために、発進時に４輪全ての車輪を車輪速センサ３１
により測定して、測定車輪速を求める。The correction of the mini tire will be described below by taking a front-wheel drive vehicle as an example (FIG. 4). <a> Detection of mounting of mini tires 1 Since the anti-lock brake control can be performed immediately after starting the vehicle, all four wheels are wheel speed sensors 31 at the time of starting.
To obtain the measured wheel speed.
【００１４】４輪が同一の径のタイヤ、例えばすべてノ
ーマルタイヤを装着しており、かつグリップ走行をして
いる場合、車両の旋回方向にかかわらず、測定車輪速
は、以下の関係式（式８乃至式１０）を満足する。これ
ら関係式は、式４乃至式７から導き出せる。また式１０
の代わりに式１０の近似式を使用することができる。式
１０の近似式の一例として式１１を用いることができ
る。When four wheels are equipped with tires of the same diameter, for example, all normal tires, and grip traveling is performed, the measured wheel speed is calculated by the following relational expression (equation) regardless of the turning direction of the vehicle. 8 to 10 are satisfied. These relational expressions can be derived from Expressions 4 to 7. Equation 10
The approximation of Equation 10 can be used instead of Expression 11 can be used as an example of the approximate expression of Expression 10.
【式８】 (Equation 8)
【式９】 [Formula 9]
【式１０】 (Equation 10)
【式１１】 [Formula 11]
【００１５】ここで測定車輪速が式８乃至式１１を満さ
ず、４輪がグリップ走行をしている場合、Ｖ3 ＞Ｖ1 の
時は、左後輪３がミニタイヤを装着していると推定さ
れ、又、Ｖ4 ＞Ｖ2 の時は、右後輪４がミニタイヤを装
着していると推定される。ミニタイヤが推定されると、
ミニタイヤの径の補正を行う。Here, when the measured wheel speed does not satisfy the formulas 8 to 11 and the four wheels are gripping, and when V3> V1, the left rear wheel 3 is equipped with a mini tire. It is estimated that when V4> V2, the right rear wheel 4 is presumed to be fitted with a mini tire. When mini tires are estimated,
Correct the diameter of the mini tire.
【００１６】＜ロ＞ミニタイヤの装着の検出２ 式１０乃至式１１から各車輪速（Ｖ1 乃至Ｖ4 ）を左辺
にした式に変形する。例えば左前輪の車輪速Ｖ1 は、以
下の式１２乃至式１３となる。これら式の右辺の車輪速
の変数に測定車輪速を代入して、４輪に対して推定車輪
速を求める。<B> Mini-tire mounting detection 2 Equations 10 to 11 are transformed into equations in which the wheel speeds (V1 to V4) are on the left side. For example, the wheel speed V1 of the left front wheel is given by the following equations 12 to 13. Substituting the measured wheel speed for the variable of the wheel speed on the right side of these equations, the estimated wheel speed is obtained for the four wheels.
【式１２】 (Equation 12)
【式１３】 (Equation 13)
【００１７】算出された推定車輪速と測定車輪速とを比
較して、以下の式１４を満たす車輪については、ミニタ
イヤを装着しておらずノーマルタイヤと推定する。それ
に対して、式１４を満たさない場合はミニタイヤが装着
されていると推定する。しかし、実際にミニタイヤが装
着されていると、装着輪の対角、即ち、右後輪４がミニ
タイヤなら右後輪４と、その対角である左前輪１が式１
４を満たさないことになる。By comparing the calculated estimated wheel speed with the measured wheel speed, the wheels satisfying the following expression 14 are estimated to be normal tires without the mini tires. On the other hand, when Expression 14 is not satisfied, it is estimated that the mini tire is mounted. However, when the mini tire is actually mounted, the diagonal of the mounted wheel, that is, if the right rear wheel 4 is a mini tire, the right rear wheel 4 and the diagonal left front wheel 1 are expressed by the formula 1
4 will not be met.
【式１４】 [Formula 14]
【００１８】そこで、対角の車輪（例えば、左前輪１と
右後輪４）のどちらかがミニタイヤか分からない場合、
別の対角の車輪（ノーマルタイヤである右前輪２と左後
輪３）を用いて各車輪速を推定する。この様にして推定
した推定車輪速と測定車輪速を比較して、等しい場合は
ミニタイヤでないと判断できる。なお、対角の車輪（例
えば、左前輪１と右後輪４）の車輪速は、式４乃至式７
を用いて、別の対角の車輪（右前輪２と左後輪３）の車
輪速の関数として表すことができる。例えば、左前輪１
の車輪速Ｖ1 は、別の対角の右前輪２と左後輪３の車輪
速Ｖ2 とＶ3 で以下の式１５のように表すことができ
る。また、式４乃至式７は左旋回の場合であるが、右旋
回の場合も同様な関係式で表すことができる。Therefore, when it is not known which one of the diagonal wheels (for example, the left front wheel 1 and the right rear wheel 4) is a mini tire,
The wheel speeds are estimated using wheels on different diagonals (the front right wheel 2 and the rear left wheel 3 which are normal tires). By comparing the estimated wheel speed thus estimated with the measured wheel speed, if they are equal, it can be determined that the tire is not a mini tire. Note that the wheel speeds of diagonal wheels (for example, the left front wheel 1 and the right rear wheel 4) are expressed by Equations 4 to 7
Can be expressed as a function of the wheel speed of another diagonal wheel (right front wheel 2 and left rear wheel 3). For example, left front wheel 1
The wheel speed V1 of the vehicle can be expressed by the following equation 15 using the wheel speeds V2 and V3 of the right front wheel 2 and the left rear wheel 3 at different diagonals. Further, although Equations 4 to 7 are for the case of turning left, the same relational expressions can be used for the case of turning right.
【式１５】 (Equation 15)
【００１９】＜ハ＞ミニタイヤの径の補正 ミニタイヤが装着されている車輪位置が判断されると、
ミニタイヤが装着されていない３車輪の測定車輪速を式
１０乃至式１１に代入して、ミニタイヤが装着されてい
る車輪の推定車輪速を求める。この推定車輪速と測定車
輪速の比（推定車輪速／測定車輪速）を用いてミニタイ
ヤの径の補正を行うことができる。<C> Correction of diameter of mini tire When the position of the wheel on which the mini tire is mounted is determined,
The estimated wheel speeds of the wheels to which the mini tires are attached are obtained by substituting the measured wheel speeds of the three wheels to which the mini tires are not attached into equations 10 to 11. The diameter of the mini tire can be corrected using the ratio of the estimated wheel speed and the measured wheel speed (estimated wheel speed / measured wheel speed).
【００２０】又は、ミニタイヤの径（ｋ）が既知の場
合、ノーマルタイヤの径（Ｋ）との比ｋ／Ｋを車輪速セ
ンサで測定されたミニタイヤの測定車輪速に掛けて、補
正車輪速を求めることができる。この補正車輪速を用い
てアンチロックブレーキ制御を行うことにより、正確な
アンチロックブレーキ制御を行うことができる。Alternatively, when the diameter (k) of the mini tire is known, the ratio k / K to the diameter (K) of the normal tire is multiplied by the measured wheel speed of the mini tire measured by the wheel speed sensor to obtain a correction wheel. You can ask for speed. By performing antilock brake control using this corrected wheel speed, accurate antilock brake control can be performed.
【００２１】[0021]
【発明の効果】本発明は、次のような効果を得ることが
できる。 ＜イ＞例えば、発進時に車両が旋回し、その直後にアン
チロック制御が行われた場合、発進直後にミニタイヤの
径の補正をしないと、正確なアンチロック制御ができな
い恐れがある。 しかし、本発明では、発進時に旋回してもミニタイヤの
装着の有無を検出して、タイヤの径の補正が行われるの
で、アンチロックブレーキ制御を正しく行うことができ
る。According to the present invention, the following effects can be obtained. <B> For example, when the vehicle turns at the time of starting and antilock control is performed immediately after that, there is a possibility that accurate antilock control cannot be performed unless the diameter of the mini tire is corrected immediately after starting. However, according to the present invention, the presence or absence of the mini-tire is detected and the tire diameter is corrected even if the vehicle is turning when starting, so that the anti-lock brake control can be correctly performed.
【図１】アンチロックブレーキ制御装置の概略図FIG. 1 is a schematic diagram of an antilock brake control device.
【図２】アンチロックブレーキ制御装置の液圧回路図FIG. 2 is a hydraulic circuit diagram of the anti-lock brake control device.
【図３】左旋回時の車輪の状態を示す図FIG. 3 is a diagram showing a state of wheels when turning left.
【図４】ミニタイヤの装着の検出フロー図[Fig. 4] Flow chart for detecting the mounting of mini tires
１・・・・左前輪 ２・・・・右前輪 ３・・・・左後輪 ４・・・・右後輪 １０・・・ＡＢＳ制御装置 ２０・・・ＡＢＳ液圧ユニット ３０・・・電子制御装置 1 ... Left front wheel 2 ... Right front wheel 3 ... Left rear wheel 4 ... Right rear wheel 10 ... ABS control device 20 ... ABS hydraulic unit 30 ... Electronic Control device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田進 静岡県浜北市中瀬8000 日清紡績株式会社 浜北精機工場内 (72)発明者 小澤渡 静岡県浜北市中瀬8000 日清紡績株式会社 浜北精機工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Yamada Nakase 8000, Nisshinbo Co., Ltd., Hamakita City, Shizuoka Prefecture (72) Wataru Ozawa Wataru Nakase 8000, Nisshinbo Co., Ltd., Hamakita City, Shizuoka Prefecture, Hamakita Seiki Co., Ltd.
Claims (5)
正方法において、 各車輪について車輪速センサからの信号に基づいて測定
車輪速を求め、 該測定車輪速と、車両のホイールベース、トレッドおよ
び車輪速の関係式とから推定車輪速を求め、 該測定車輪速と該推定車輪速とを比較してミニタイヤの
装着を判定し、 装着されたミニタイヤに対して車輪速の補正を行うこと
を特徴とする、 車輪速補正方法。1. A wheel speed correction method for a vehicle equipped with a spare mini tire, wherein a measured wheel speed is obtained for each wheel based on a signal from a wheel speed sensor, and the measured wheel speed and the wheel base and tread of the vehicle. And the relational expression of the wheel speed, the estimated wheel speed is obtained, the measured wheel speed is compared with the estimated wheel speed to determine the mini-tire installation, and the wheel speed is corrected for the installed mini-tire. A method for correcting wheel speed, which is characterized in that
正方法において、 各車輪について車輪速センサからの信号に基づいて測定
車輪速を求め、 車両のホイールベース、トレッドおよび車輪速の関係式
と、４輪中少なくとも２輪の測定車輪速を用いて、４輪
中の他の１輪の推定車輪速を求め、 該測定車輪速と該推定車輪速とを比較してミニタイヤの
装着を判定し、 装着されたミニタイヤに対して車輪速の補正を行うこと
を特徴とする、 車輪速補正方法。2. A wheel speed correction method for a vehicle equipped with a spare mini tire, wherein a measured wheel speed is obtained for each wheel based on a signal from a wheel speed sensor, and a relational expression of a wheel base, a tread and a wheel speed of the vehicle is obtained. Using the measured wheel speeds of at least two of the four wheels, the estimated wheel speed of the other one of the four wheels is obtained, and the measured wheel speed is compared with the estimated wheel speed to mount the mini tire. A method for correcting wheel speed, characterized by making a determination and correcting the wheel speed for the mounted mini tires.
て、 該測定車輪速と該推定車輪速との比較結果からミニタイ
ヤの補正係数を求めることを特徴とする、 車輪速補正方法。3. The wheel speed correcting method according to claim 2, wherein a correction coefficient of the mini tire is obtained from a result of comparison between the measured wheel speed and the estimated wheel speed.
て、 該関係式は、下記の式、これらの変形式、又はこれらの
近似式であることを特徴とする、 車輪速補正方法。 【式１】 【式２】 【式３】 4. The wheel speed correction method according to claim 2, wherein the relational expression is the following expression, a modified expression thereof, or an approximate expression thereof. (Equation 1) (Equation 2) (Equation 3)
補正方法において、 補正された車輪速を用いて、アンチロックブレーキ制御
を行うことを特徴とする、 車輪速補正方法。5. The wheel speed correction method according to any one of claims 1 to 4, wherein antilock brake control is performed using the corrected wheel speed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259295A JPH0976889A (en) | 1995-09-12 | 1995-09-12 | Wheel speed correcting method |
| DE1996136310 DE19636310A1 (en) | 1995-09-12 | 1996-09-06 | Wheel speed correcting methods for vehicles equipped with mini tyre as spare tyre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259295A JPH0976889A (en) | 1995-09-12 | 1995-09-12 | Wheel speed correcting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0976889A true JPH0976889A (en) | 1997-03-25 |
Family
ID=17332099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7259295A Pending JPH0976889A (en) | 1995-09-12 | 1995-09-12 | Wheel speed correcting method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0976889A (en) |
| DE (1) | DE19636310A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030050263A (en) * | 2001-12-18 | 2003-06-25 | 현대자동차주식회사 | a car speed auto control method |
| JP2007030749A (en) * | 2005-07-28 | 2007-02-08 | Nissin Kogyo Co Ltd | Differential diameter rate calculating method for wheel, and differential diameter rate calculating device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19721433A1 (en) * | 1997-05-22 | 1998-11-26 | Wabco Gmbh | Processes for processing signals |
| DE19809546C1 (en) * | 1998-03-05 | 1999-10-07 | Knorr Bremse Systeme | Method and device for determining the wheelbase of vehicles |
| DE102006008273A1 (en) * | 2006-02-22 | 2007-08-30 | Siemens Ag | Future lane forecast method e.g. for vehicle, involves determining speeds of wheels of vehicle and dependent on these wheel speeds vehicle variable state is estimated |
-
1995
- 1995-09-12 JP JP7259295A patent/JPH0976889A/en active Pending
-
1996
- 1996-09-06 DE DE1996136310 patent/DE19636310A1/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030050263A (en) * | 2001-12-18 | 2003-06-25 | 현대자동차주식회사 | a car speed auto control method |
| JP2007030749A (en) * | 2005-07-28 | 2007-02-08 | Nissin Kogyo Co Ltd | Differential diameter rate calculating method for wheel, and differential diameter rate calculating device |
| JP4580302B2 (en) * | 2005-07-28 | 2010-11-10 | 日信工業株式会社 | Wheel different diameter ratio calculation method and different diameter ratio calculation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19636310A1 (en) | 1997-03-13 |
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