CN1101884A - Method for preventing skidding of wheels when emergency brake of automobile - Google Patents
Method for preventing skidding of wheels when emergency brake of automobile Download PDFInfo
- Publication number
- CN1101884A CN1101884A CN 93119220 CN93119220A CN1101884A CN 1101884 A CN1101884 A CN 1101884A CN 93119220 CN93119220 CN 93119220 CN 93119220 A CN93119220 A CN 93119220A CN 1101884 A CN1101884 A CN 1101884A
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- China
- Prior art keywords
- automobile
- amplifier
- emergency braking
- wheel
- automobile emergency
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- 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
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
- B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The new method and apparatus for preventing direction offset and steering wheel runaway when emergency braking of automobile on smooth road feature that by testing the deflection angles of front and rear wheels on braking, the braking force to one wheel is regulated while current braking force to another wheel is maintained, to make the deflection angles of front and rear wheels consistent.
Description
The present invention relates to automotive technology, more particularly, relate to a kind of running car that is used for and skid and the automobile emergency of being partial to braking method for preventing skidding of wheels and device thereof at the smooth road emergency braking.
Automobile is urgent glancing impact on flushing road surface, because Uneven road, loads irregularly, brakes reasons such as asynchronous, causes the automobile slip easily, and bearing circle is out of control, the generation that causes the accident.Domestic and international many experts and scholar have carried out a large amount of research to this, obtained many achievements in research, develop some anti-skid devices.But because the automobile emergency glancing impact, inertia is big, and the time is short, and these devices are difficult to obtain good effect, all are not widely used so far.The departure point of these devices all is to want to stop or reduce the slip of automobile, Purely mechanical is wherein arranged, jet, water spray, sandblast and spray are arranged, and some increase the method for friction material, though played certain effect with these methods to anti-skidding, yet have some problems:
1. the major cause that causes the accident of automobile emergency braking is not that automobile slides, but bearing circle is out of control, the automobile deflection, and these methods all fail to address this problem well.
2. use inconvenient with the method for spray material.
3. because automobile emergency glancing impact inertia is big, spray material skidproof effect is not obvious, if increase emitted dose, will bring the installation difficulty to equipment, use unfavorable factors such as inconvenience, cost costliness, is not therefore promoted the use of.
4. the mechanical type anti-skid device can be divided into two classes, and a class is to make automobile 4 take turns whole brakings simultaneously, and a class is to increase friction force in addition by auxiliary device.Last class obviously can not prevent the automobile deflection and solve the bearing circle out-of-control phenomenon, in fact often cause the appearance of accident owing to bearing circle is out of control, back one class is because automatic reaction speed is slow, if it is liftoff too near that this device is installed in advance, cruising that certainly will the overslaugh automobile, if liftoff too high, then can not play good skidproof effect.
In fact, when flushing road surface is got on the car emergency braking, the major cause that causes accident is not slip, but bearing circle is out of control, therefore Japan has developed electronics or anti-skid device recently, thereby guarantees that bearing circle is not out of control, and its principle is to guarantee that the braking force perseverance is less than tire and ground-surface friction force, obtained some application, yet there are following two problems in this kind method:
1. because road surface situation complexity, its friction force with tire is difficult to detection, otherwise will increase cost.
2. the method does not allow automobile to slide, and only be to roll, yet coefficient of rolling friction thereby must increase the operating range of emergency braking less than coefficient of sliding resistance.
Therefore this kind device also is difficult to carry out energetically.
The object of the present invention is to provide and a kind ofly avoid or weaken automobile urgent glancing impact bearing circle on smooth road automobile emergency braking method for preventing skidding of wheels out of control, utilize this method can overcome the existing shortcoming that prevents automobile emergency glancing impact direction out of control method.
The present invention also aims to provide a kind of automobile emergency braking anti-deflection device, this automobile emergency braking anti-deflection device allow automobile to slide so that during emergency braking operating range the shortest and prevent that bearing circle is out of control.
The object of the present invention is achieved like this, constructs a kind of automobile emergency braking method for preventing skidding of wheels, comprises following steps:, comprise following steps:
Detect automobile front and rear wheel corner;
Judge whether the front and rear wheel drift angle is identical, if step identical then duplicate detection automobile front and rear wheel drift angle;
Judge that front and rear wheel is left avertence or right avertence;
The calculating adjustment amount reaches and adjusts by the left avertence control method when judging front and rear wheel generation left avertence;
The calculating adjustment amount reaches and adjusts by the right avertence control method when judging front and rear wheel generation right avertence.
The object of the present invention is achieved like this, construct a kind of automobile emergency braking anti-deflection device simultaneously, comprising, front-wheel direction corner detector 1, trailing wheel direction deflection angle detector 2, receive first signal processor 3 of the output signal of described front-wheel direction deflection angle detector 1, receive the secondary signal treater 4 of the output signal of described trailing wheel direction deflection angle detector 2, with described first, secondary signal treater 3, the micro controller system 5 of 4 couplings, and with first D/A converter 6 and second D/A converter 7 of described micro controller system 5 couplings, respectively with described first, second A/D converter 6, first amplifier 8 and second amplifier 9 of the coupling of 7 mouths are respectively with described first, second amplifier 8, first actuating unit and second actuating unit 10 of the coupling of 9 mouths, 11.
Automobile emergency braking anti-deflection device of the present invention is characterized in that, described front-wheel direction corner detector 1 comprises and is used for the directly code-disc of detection.
Automobile emergency braking anti-deflection device of the present invention is characterized in that described trailing wheel direction deflection angle detector 2 comprises pressure sensor 108,09 and inertia transmission device 106,107,103,101.
Automobile emergency braking anti-deflection device of the present invention, it is characterized in that, described first signal processor 3 comprises amplifier 301, counting machine 302 and energy disperser 303, described secondary signal treater 4 comprises filter 401,401 ', amplifier 402,402 ', with amplifier 402,402 ' and the calibration channel 403,403 ' that connects, A/D changer 404,404 ' and energy disperser 405,405 '.
Automobile emergency braking anti-deflection device of the present invention is characterized in that described first, second actuating unit 10,11 comprises hydraulic pressure or air-operated solenoid valve.
Implement automobile emergency braking method for preventing skidding of wheels of the present invention and device thereof, fundamentally changed the automobile method that emergency braking causes the accident on flushing road surface that how to prevent, becoming in the past anti-skidding is anti-inclined to one side (allowing automobile that certain slip is arranged).Mechanical type in the past, material spray formula anti-skid device can not solve automobile deflection problem and bearing circle problem out of control.Secondly and device of the present invention can address this problem, and, has overcome their use inconvenience, and difficulty is installed, the shortcoming of DeGrain, comparing with the electronic type anti-skid device of nearest Japan more has significant progress, 1). it is convenient to measure; 2). cost is not high; 3). stopping distance is shorter.In fact place this method can obtain better effects, and key is to think:
1). automobile slides and causes that automobile is partial to and bearing circle is out of control, but is not to prevent that the automobile slip from just can prevent the automobile deflection;
2). adopt the notion that directly prevents the automobile deflection, and developed corresponding device thereof;
3). allow automobile to slide, and do not allow the automobile deflection, so just can shorten the operating range of glancing impact;
4). adopt computer control, can realize complicated control.
In conjunction with the accompanying drawings, further specify embodiments of the invention, in the accompanying drawing,
Fig. 1 is the block representation of automobile emergency braking method for preventing skidding of wheels of the present invention;
Fig. 2 is the constructional drawing of automobile emergency braking anti-deflection device of the present invention;
Fig. 3 is the electrical schematic diagram of automobile emergency braking anti-deflection device of the present invention;
Fig. 4 is for being used for the structural representation of the trailing wheel drift angle detector 2 of indirect detection among Fig. 2;
Fig. 5 is the logic diagram of control program in the micro controller system 5 among Fig. 2.
In order to reduce the automobile accident rate that emergency braking causes on flushing road surface as far as possible, at first be the bearing circle problem out of control that should solve this moment, guaranteeing to reduce the stopping distance of automobile under the bearing circle preceding topic not out of control as far as possible.Fig. 1 has provided a kind of under the condition of the stopping distance that influences automobile hardly, prevent the control method that bearing circle is out of control, promptly by detecting the angle of deviation of front and back wheel this moment, compare two angle of deviation, guaranteeing that one takes turns under the condition of slip (glancing impact supposes that two trailing wheels are all sliding), perhaps can say, guaranteeing that one takes turns under the condition that is in current braking force, with fuzzy control method or other control method another is taken turns braking force adjustment, the two-wheel angle of deviation is consistent before and after making.
Fig. 2 has provided the automobile emergency braking anti-deflection device of implementing Fig. 1 method, and as seen this device is made up of following components, 1). the test section of forming by front-wheel direction corner detector 1 and trailing wheel direction deflection angle detector 2; 2). the signal processing that constitutes by first signal processor 3 and secondary signal treater 4; 3). computer part 5; And by first, second D/ A converter 6,7, the control operating part that first, second amplifier 8,9 and first, second actuating unit 10,11 constitute.
The test section is used to finish the detection of front and rear wheel direction deflection angle, direct detection is arranged and survey two kinds indirectly, and directly detecting is exactly the angle of deviation that directly detects wheel, as methods such as available code-disc mode, potential device, inductance, electric capacity, photoelectric code disks.Indirect detection is exactly by pressure, and methods such as acceleration/accel, speed detect, and again by calculating, calculate the angle of deviation of wheel, but as adopts pressure sensor, methods such as strain-gauge detect.
Secondly detection also can be divided into contact detection and non-contact detection, contact detects as methods such as potential device, code-disc, pressure sensor, electrostrictive strains.Methods such as non-contact detecting such as inductance, electric capacity, photoelectric code disk, more than these methods all can be used for detection to the front and back wheel angle of deviation.
Described front-wheel direction corner detector 1 adopts directly and detects, and described trailing wheel direction deflection angle detector 2 adopts Indirect Detecting Method that trailing wheel is detected the drift angle.Fig. 4 has provided a kind of enforcement constructional drawing of indirect detection.Wherein, Fig. 4 (a) is a cutaway view; Fig. 4 (b) is a birds-eye view.In Fig. 4 (a) and Fig. 4 (b), 101 is hexagonal (hexagon)nut, and 102 is ring washer, and 103 is bearing, and 104 is that spring washer, 105 is that bolt, 106 is swivel arm, and 107 is that bearing support, 108 and 109 is pressure sensor.
Signal processing is mainly finished functions such as filtering to detection signal, shaping, amplification, correction, A/D conversion, makes it signal and is converted to and can be the binary mode that computing machine receives.As shown in Figure 3, first signal processor 3 of signal processing comprises amplifier 301, counting machine 302, energy disperser 303 respectively, secondary signal treater 4 comprises filter 401,401 ', amplifier 402,402 ', calibration channel 403,403 ', A/D changer 404,404 ', and energy disperser 405,405 '.Band left-falling stroke person ", " is used for left rear wheel, is not with left-falling stroke person to be used for off hind wheel.
Actuating unit is undertaken the control task to controlled object, and it comprises that D/A conversion, signal amplify and power element three parts, adopt electromagnetic valve to make power element here.
Claims (6)
1, a kind of method for preventing skidding of wheels of automobile emergency glancing impact is characterized in that, comprises following steps:
Detect automobile front and back wheel corner;
Judge whether the front and rear wheel drift angle is identical, if step identical then duplicate detection automobile front and back wheel drift angle;
Judge that front and rear wheel is left avertence or right avertence;
The calculating adjustment amount reaches and adjusts by the left avertence control method when judging front and rear wheel generation left avertence;
The calculating adjustment amount reaches and adjusts by the right avertence control method when judging front and rear wheel generation right avertence.
2, a kind of anti-deflection device of automobile emergency glancing impact, it is characterized in that comprising: front-wheel direction corner detector (1), trailing wheel direction deflection angle detector (2), receive first signal processor (3) of the output signal of described front-wheel direction deflection angle detector (1), receive the secondary signal treater (4) of the output signal of described trailing wheel direction deflection angle detector (2), with described first, secondary signal treater (3), (4) Ou He micro controller system (5), and with first D/A converter (6) and second D/A converter (7) of described micro controller system (5) coupling, respectively with described first, second A/D converter (6), (7) first amplifier (8) and second amplifier (9) of mouth coupling are respectively with described first, second amplifier (8), (9) first actuating unit (10) and second actuating unit (11) of mouth coupling.
3, automobile emergency braking anti-deflection device as claimed in claim 2 is characterized in that, described front-wheel direction corner detector (1) comprises and is used for the directly code-disc of detection.
4, automobile emergency braking anti-deflection device as claimed in claim 2 is characterized in that described trailing wheel direction deflection angle detector (2) comprises pressure sensor (108,109) and inertia transmission device (106,107,103,101).
5, automobile emergency braking anti-deflection device as claimed in claim 2, it is characterized in that, described first signal processor (3) comprises amplifier (301), counting machine (302) and energy disperser (303), described secondary signal treater (4) comprises filter (401,401 '), amplifier (402,402 '), with amplifier (402,402 ') and the calibration channel (403,403 '), A/D changer (404,404 ') and the energy disperser (405,405 ') that connect.
6, automobile emergency braking anti-deflection device as claimed in claim 2 is characterized in that described first, second actuating unit (10), (11) comprise hydraulic pressure or air-operated solenoid valve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93119220 CN1101884A (en) | 1993-10-19 | 1993-10-19 | Method for preventing skidding of wheels when emergency brake of automobile |
| AU79359/94A AU7935994A (en) | 1993-10-19 | 1994-10-19 | Process and apparatus of anti-inclination for controlling in an emergency braking |
| PCT/CN1994/000078 WO1995011149A1 (en) | 1993-10-19 | 1994-10-19 | Process and apparatus of anti-inclination for controlling in an emergency braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93119220 CN1101884A (en) | 1993-10-19 | 1993-10-19 | Method for preventing skidding of wheels when emergency brake of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1101884A true CN1101884A (en) | 1995-04-26 |
Family
ID=4992808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93119220 Pending CN1101884A (en) | 1993-10-19 | 1993-10-19 | Method for preventing skidding of wheels when emergency brake of automobile |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1101884A (en) |
| AU (1) | AU7935994A (en) |
| WO (1) | WO1995011149A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740869A (en) * | 2017-02-06 | 2017-05-31 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of anti-deviation method and system of automobile |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3817546A1 (en) * | 1988-05-24 | 1989-12-07 | Bosch Gmbh Robert | METHOD FOR INCREASING THE CONTROLLABILITY OF A BRAKED VEHICLE |
| DE3840456A1 (en) * | 1988-12-01 | 1990-06-07 | Bosch Gmbh Robert | METHOD FOR INCREASING THE CONTROL OF A VEHICLE |
| US4998593A (en) * | 1989-03-31 | 1991-03-12 | Aisin Seiki Kabushiki Kaisha | Steering and brake controlling system |
| DE3933653B4 (en) * | 1989-10-09 | 2004-05-27 | Robert Bosch Gmbh | A wheel slip |
| DE4026626A1 (en) * | 1990-08-23 | 1992-02-27 | Bosch Gmbh Robert | METHOD FOR REGULATING VEHICLE DYNAMICS |
| JPH04126669A (en) * | 1990-09-18 | 1992-04-27 | Nissan Motor Co Ltd | Behavior controller of vehicle |
| JPH04292250A (en) * | 1991-03-20 | 1992-10-16 | Hitachi Ltd | Antiskid controller and method thereof |
| JPH04358955A (en) * | 1991-06-05 | 1992-12-11 | Hitachi Ltd | Safety device of antiskid control system |
| US5251137A (en) * | 1991-07-10 | 1993-10-05 | General Motors Corporation | Vehicle handling control method for antilock braking |
| JP2583367B2 (en) * | 1991-07-22 | 1997-02-19 | 日産自動車株式会社 | Braking force control device |
| JPH0565059A (en) * | 1991-09-09 | 1993-03-19 | Hitachi Ltd | Anti-skid brake control device |
-
1993
- 1993-10-19 CN CN 93119220 patent/CN1101884A/en active Pending
-
1994
- 1994-10-19 AU AU79359/94A patent/AU7935994A/en not_active Abandoned
- 1994-10-19 WO PCT/CN1994/000078 patent/WO1995011149A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740869A (en) * | 2017-02-06 | 2017-05-31 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of anti-deviation method and system of automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995011149A1 (en) | 1995-04-27 |
| AU7935994A (en) | 1995-05-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |