JPS59179439A - Controlling method of car brake pressure retention - Google Patents
Controlling method of car brake pressure retentionInfo
- Publication number
- JPS59179439A JPS59179439A JP5314583A JP5314583A JPS59179439A JP S59179439 A JPS59179439 A JP S59179439A JP 5314583 A JP5314583 A JP 5314583A JP 5314583 A JP5314583 A JP 5314583A JP S59179439 A JPS59179439 A JP S59179439A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- wheel
- vehicle
- circuit
- brake pressure
- 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
-
- 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
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
- B60T8/1761—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
- B60T8/17616—Microprocessor-based systems
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は車両特に自動車におけるブレーキ圧力保持装置
の制御方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling a brake pressure holding device in a vehicle, particularly an automobile.
既知の如く、車両のオートスト２ｆ装置、制動力保持装
置等と表現されるブレーキ圧力保持装置につ、いては種
々のものが提案されているが、これは要するに、走行車
両の制動停止時にブレーキ装置内に伝えられているブレ
ーキ油圧力を、次ぎの車両発進等の際に与えられる信号
によって解除するまで自動的に保持するものとし、停止
車両の制動力をブレーキペダルへの路下如何によらず確
保させるようにした構成の装置をいい、一般的には油圧
作動型ブレーキ装置に対しての油圧伝達系に常開型の電
磁パルプ（オートスドッグパルプと称されることが多い
）を介設し、この電磁パルプを、車両制動時に車輪速度
が雰ないし同等の速度まで低下したときに閉状態に電磁
的に切換え動作させ、次ぎのアクセル（ダルへの路下等
に応じて電磁パルプの作動を解除させるようにした形式
のものが多い。As is known, various types of brake pressure holding devices have been proposed, such as vehicle auto-stop 2f devices and braking force holding devices. The system automatically maintains the brake fluid pressure transmitted to the brake pedal until it is released by a signal given when the next vehicle starts, etc., and applies braking force to a stopped vehicle regardless of whether the brake pedal is on the road or not. Generally, a normally open electromagnetic pulp (often referred to as an autosdog pulp) is installed in the hydraulic transmission system for a hydraulically actuated brake device. When the vehicle brakes, this electromagnetic pulp is electromagnetically switched to the closed state when the wheel speed decreases to a similar speed, and the electromagnetic pulp is activated in response to the next accelerator (such as when the vehicle is on the road). Many of them are designed to be released.
ところで、このようなブレーキ圧力保持装置は運動者の
意思に拘わらず自動的な制動状態を与えるものであるか
ら、車両走行中において無用に動作する。ことはむしろ
危険な状況を招くことにもなシかねない。By the way, since such a brake pressure holding device automatically provides a braking state regardless of the intention of the person exercising, it operates unnecessarily while the vehicle is running. This could even lead to a dangerous situation.
例えば車両の走行制御状態について更に検討を加えると
、走行中においては停止に至らないような速度減速のた
めのブレーキ操作が頻繁に行なわれる他、特殊な状況下
では車両走行中に車輪ロックを生ずる場合のあることも
知られておシ、この後者の場合は所謂アンチロックシス
テムを用いて車輪回転を回復させるべくブレーキ圧力を
低下させる制御を行なうことが望ましいとされて、従来
よりこのためのアンチロック装置あるいはアンチスキッ
ド装置が多数提案されているところであり、このような
車両走行中における車輪ロックの発生時に前記ブレーキ
圧力保持装置が動作するとすれば、アンチロック装置に
代表されるようなブレーキ圧力め制御とは全く逆の制御
状態を招いてしまう結果となる。For example, if we further examine the running control state of a vehicle, we find that while the vehicle is running, brake operations are frequently performed to reduce the speed without stopping the vehicle, and under special circumstances, the wheels may lock while the vehicle is running. In this latter case, it is desirable to use a so-called anti-lock system to reduce the brake pressure in order to restore wheel rotation. Many locking devices or anti-skid devices have been proposed, and if the brake pressure holding device operates when a wheel lock occurs while the vehicle is running, the brake pressure holding device as typified by the anti-lock device This results in a control state that is completely opposite to the control.
これは前記ブレーキ圧力保持装置が制動時の車輪速度が
雰すなわちロックと同様の状態となったことを制御要素
の一つとする場合の必然的結果である。This is an inevitable result when the brake pressure holding device uses as one of the control elements the fact that the wheel speed during braking is in a state similar to a lock state.
そこで本発明においては、前記ブレーキ圧力保持装置の
動作は、所謂車両走行制動時における車輪ロックの発生
によっては行なわれないすることを目的としてなされた
ものである。Therefore, in the present invention, the operation of the brake pressure holding device is designed to prevent the operation of the brake pressure holding device from occurring due to the occurrence of wheel locking during so-called braking while the vehicle is running.
而してこの目的全達成するための本発明の要旨とすると
ころは、車両ブレーキ装置内のブレーキ圧力を、車両停
止時から次の車両発進操作時まで自動的に保持するよう
作動するブレーキ油圧系中の電磁パルプを備えた車両に
おいて、前記電磁パルプの作動開始時点は、車両制動時
における車輪回転の停止検知により出力される第１の信
号と、車両走行中における車輪ロックの検知によ多出力
される信号を反転した第２の信号、換言すれば車輪回転
の停止が走行制動中の車輪ロックでないことを内容とす
る前記第２の信号とに基づいて決定する車両ブレーキ圧
力保持制御方法にある。The gist of the present invention to achieve all of these objects is to provide a brake hydraulic system that operates to automatically maintain the brake pressure in the vehicle brake system from the time the vehicle is stopped until the next time the vehicle is started. In a vehicle equipped with an internal electromagnetic pulp, the activation point of the electromagnetic pulp is determined by a first signal output by detecting a stop in wheel rotation when the vehicle is braking, and a multiple output by detecting a wheel lock while the vehicle is running. The vehicle brake pressure holding control method is determined based on a second signal that is an inversion of the signal that is applied, in other words, the second signal that indicates that the stop of wheel rotation is not a wheel lock during running braking. .
以下本発明の実施例を図面に基づいて説明する。Embodiments of the present invention will be described below based on the drawings.
第１図は本発明方法全実現する制御回路の一実施例をブ
ロック回路として示したものである。図においてｌは車
輪速度信号発生器であり、スピードセンサによシ車輪回
転に応じた周波数信号ｆを出力する。FIG. 1 shows, as a block circuit, one embodiment of a control circuit that implements the entire method of the present invention. In the figure, l is a wheel speed signal generator, which outputs a frequency signal f according to wheel rotation to a speed sensor.
２は車輪停止判定回路でラシ、前記信号ｆに基づき車輪
回転の停止（すなわち完全な停止又はこれと同等の状態
）を検出して信号Ｓ１’ｆｃ出力し次段のダート回路３
（本例ではＡＮＤ回路）に入力させる。このダート回路
３は前記信号Ｓｌ と後記信号Ｓ２およびＳ３のいずれ
もが入力されたときくブレーキ圧力保持装置の電磁パル
プ４を作動させるものであ々９
５は周波数信号ｆｘｆｔ、所定の電圧信号に変換して車
輪速度信号ｖｗヲ出するＦ−Ｖ変換器であり、信号ｖｗ
は比較回路６の一方の入力とされる。この比較回路６の
もう一方の入力は車両に応じて定められる適正な減速度
状態で減少する疑似車輪速度ｖＴでｌ）、疑似速度信号
発生器７から出力される。この信号ｖＴは例えば車輪速
度信号ＶＷから一定値ΔＶを減算し、更に制動開始時点
よシ一定の減速率（例えば１？程度の減速度に相当する
値）で降下する信号として得ることができ、第２図のＶ
Ｗ、 ＶＴの線図はこれらの関係を示している。Reference numeral 2 denotes a wheel stop determination circuit which detects the stoppage of wheel rotation (that is, a complete stop or a state equivalent to this) based on the signal f, and outputs a signal S1'fc to the next stage dirt circuit 3.
(AND circuit in this example). This dart circuit 3 operates the electromagnetic pulp 4 of the brake pressure holding device when both the signal Sl and the signals S2 and S3 described later are input, and 95 is a frequency signal fxft, which is converted into a predetermined voltage signal. This is an F-V converter that outputs a wheel speed signal vw.
is used as one input of the comparator circuit 6. The other input of the comparator circuit 6 is a pseudo wheel speed vT which decreases in an appropriate deceleration condition determined depending on the vehicle (l), which is output from the pseudo speed signal generator 7. This signal vT can be obtained, for example, by subtracting a constant value ΔV from the wheel speed signal VW, and further decreasing at a constant deceleration rate (for example, a value corresponding to a deceleration of about 1?) from the time when braking is started. V in Figure 2
The W, VT diagram shows these relationships.
そして比較回路６は前記二つの信号ＶＷ、 ＶＴを比較
してＶＷ＜ｖＴとなった時点（第２図の６１時点）を車
輪ロックとして車輪ロック検知信号Ｓ。The comparator circuit 6 compares the two signals VW and VT and determines that the wheels are locked when VW<vT (time 61 in FIG. 2) and outputs a wheel lock detection signal S.
全出力する。なおこのような方式による車輪ロックの検
出は実際に車輪がロックして回転停止する時点ｔ２よシ
も若干早めに行なわれるから、本実施例では比較回路６
の次段にタイマー８を設け、この信号Ｓ２の出力が一定
時間継続するようにしているが、この一定時間は例えば
１０秒程度の時間として長く定めることにより、後記す
る電磁パルプ誤作動の確実な防止が図れる。Full output. Note that wheel lock detection using this method is performed slightly earlier than the time t2 when the wheels actually lock and stop rotating, so in this embodiment, the comparison circuit 6
A timer 8 is provided at the next stage to ensure that the output of this signal S2 continues for a certain period of time. By setting this period of time as long as, for example, about 10 seconds, it is possible to ensure that the electromagnetic pulp does not malfunction as described later. It can be prevented.
９は前記タイマー８からの信号ｓ２を反転して、車輪ロ
ック発生時には電磁パルプ４を不作動とさせるための信
号Ｓｚｋ出力する反転器である。すなわち車輪ロックの
非検出時および車輪ロック検出後のタイマー設定時間経
過後においては、反転信号Ｓ２はオン信号としてダート
回路３に入力されることになシ、タイマー８から信号ｓ
２が出力されている間はｆ−）回路３にはオフ信号とし
て入力されることになる。Reference numeral 9 denotes an inverter that inverts the signal s2 from the timer 8 and outputs a signal Szk for disabling the electromagnetic pulp 4 when a wheel lock occurs. That is, when the wheel lock is not detected and after the timer setting time has elapsed after the wheel lock is detected, the inversion signal S2 is not inputted to the dirt circuit 3 as an ON signal, and the signal s is inputted from the timer 8.
While signal 2 is being output, it is input to the f-) circuit 3 as an off signal.
ダート回路３０更に他の一つの入力信号は、アクセルペ
ダルへの路下解除の際に出力される信号Ｓｓであシ、ア
クセル弁路下検知スイッチ１ｏに１夕出力され、り。Another input signal of the dirt circuit 30 is a signal Ss which is output when the accelerator pedal is released from the road, and is output to the accelerator valve road detection switch 1o.
以上の構成をなす制御回路により、ブレーキ圧力保持装
置の電磁パルプ４が作動されてブレーキ装置内に油圧全
自動的に保持することとなるのは、車両および車輪回転
がいずれも停止したときに限定されることになるのであ
る。すなわち車両走行中に車輪ロックによって車輪回転
停止しても、このときには第２図に示した車輪速度■７
と疑似車輪速度Ｖ、の関係によって信号Ｓ２の出力した
がって信号Ｓ２がオフとなってダート回路３は電磁パル
プ４の作動信号を出力しないからである。With the control circuit configured as described above, the electromagnetic pulp 4 of the brake pressure holding device is activated to fully automatically maintain the hydraulic pressure within the brake device only when both the vehicle and the wheel rotation have stopped. It will be done. In other words, even if the wheels stop rotating due to wheel lock while the vehicle is running, at this time the wheel speeds shown in Fig. 2 7
This is because the output of the signal S2, and therefore the signal S2, is turned off due to the relationship between and the pseudo wheel speed V, and the dirt circuit 3 does not output an activation signal for the electromagnetic pulp 4.
なお本発明は前記実施例のものに限定されるもΩではな
く、車輪ロックの検出手法としては従来知られているア
ンチロックシステム等の方法を応用して行なってもよい
し、またプＶ−キペダルへの路下検知を制御要素に加え
てもよく、本発明の要旨である車両走行中の車輪回転停
止をブレーキ圧力保持装置の非作動条件としたことを含
む種々の変更した態様のものを包含することは自然であ
る。It should be noted that the present invention is not limited to the above-mentioned embodiments, but the wheel lock detection method may be performed by applying a conventionally known method such as an anti-lock system. The on-road detection of the brake pedal may be added to the control element, and various modified embodiments including the gist of the present invention in which wheel rotation stop while the vehicle is running is set as a non-operation condition for the brake pressure holding device. Inclusion is natural.
図面は本発明の一実施例を説明するためのものであり、
第１図は制御方法に用いる！ロック回路図、第２図は車
輪ロック検知の一例を説明する図である。
に車輪速度信号発生器 ２：停車判定回路３：ｅ−）回
路 ４：電磁パルプ５ ＩＦ−Ｖ変換器 ６
：比較回路、。
７：疑似速度信号発生器 ８：タイマー９：反転器
１０：アクセル非踏下検知スイッチThe drawings are for explaining one embodiment of the present invention,
Figure 1 is used for control method! Lock circuit diagram, FIG. 2 is a diagram illustrating an example of wheel lock detection. Wheel speed signal generator 2: Stop judgment circuit 3: e-) circuit 4: Electromagnetic pulp 5 IF-V converter 6
: Comparison circuit,. 7: Pseudo speed signal generator 8: Timer 9: Inverter 10: Accelerator non-depression detection switch
Claims (2)
から次の車両発進操作時まで自動的に保持するよう作動
するブレーキ油圧系中の電磁ノ々ルプを備えた車両にお
いて、前記電磁パルプの作動開始は、車両制動時の車輪
回転停止の検知と、車両走行中における車輪ロックの検
知とに基づき、車両停止かつ車輪回転停止時にのみ行な
わせることを特徴とする車両ブレーキ圧力保持制御方法
。(1) In a vehicle equipped with an electromagnetic nozzle in the brake hydraulic system that operates to automatically maintain the brake pressure in the vehicle brake system from the time the vehicle is stopped until the next vehicle starting operation, the operation of the electromagnetic pulp A vehicle brake pressure holding control method characterized in that the start is performed only when the vehicle is stopped and the wheels have stopped rotating based on detection of wheel rotation stoppage during vehicle braking and wheel lock detection while the vehicle is running.
輪減速度が一定値を越えたことを条件として行なうこと
を特徴とする特許請求の範囲第（１）項に記載した車両
ブレーキ圧力保持制御方法。(2) A vehicle brake pressure holding control method according to claim (1), wherein wheel lock is detected while the vehicle is running on the condition that wheel deceleration exceeds a certain value. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5314583A JPS59179439A (en) | 1983-03-29 | 1983-03-29 | Controlling method of car brake pressure retention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5314583A JPS59179439A (en) | 1983-03-29 | 1983-03-29 | Controlling method of car brake pressure retention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59179439A true JPS59179439A (en) | 1984-10-12 |
Family
ID=12934655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5314583A Pending JPS59179439A (en) | 1983-03-29 | 1983-03-29 | Controlling method of car brake pressure retention |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59179439A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63130455A (en) * | 1986-11-19 | 1988-06-02 | Tokico Ltd | Brake device for vehicle |
| US7950750B2 (en) | 2005-10-20 | 2011-05-31 | Advics Co., Ltd. | Apparatus and method for maintaining braking force of vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194144A (en) * | 1981-05-25 | 1982-11-29 | Toyota Motor Corp | Brake state detector for car |
-
1983
- 1983-03-29 JP JP5314583A patent/JPS59179439A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194144A (en) * | 1981-05-25 | 1982-11-29 | Toyota Motor Corp | Brake state detector for car |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63130455A (en) * | 1986-11-19 | 1988-06-02 | Tokico Ltd | Brake device for vehicle |
| US7950750B2 (en) | 2005-10-20 | 2011-05-31 | Advics Co., Ltd. | Apparatus and method for maintaining braking force of vehicle |
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