CN1822974A - Vehicle braking system - Google Patents
Vehicle braking system Download PDFInfo
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- CN1822974A CN1822974A CN 200480020668 CN200480020668A CN1822974A CN 1822974 A CN1822974 A CN 1822974A CN 200480020668 CN200480020668 CN 200480020668 CN 200480020668 A CN200480020668 A CN 200480020668A CN 1822974 A CN1822974 A CN 1822974A
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Abstract
A vehicle braking system has two driver-operable input devices. The vehicle braking system is sufficiently configured such that one of the driver-operable input devices is effective in causing resistance to the rotation of at least one wheel only when a predetermined condition exists, and the other driver-operable input device is effective independent of the predetermined condition.
Description
Technical field
The present invention relates to have can be by first input media of driver's operation and can be by the motor vehicle braking system of second input media of driver's operation, described first input media only just works when predetermined state exists, and working of described second input media is irrelevant with predetermined state.
Background technology
In braking (brake-by-wire) system of conventional line traffic control, the machinery input that can be adopted conv that chaufeur is sent by the brake system input media of driver's operation changes into the electric signal of expression driver intention.This electric signal is deciphered according to the program or the software of controller by controller.Controller sends a signal that is passed to actuating unit.Actuating unit produces predetermined mechanical response to the signal that comes self-controller, and this mechanical response produces the resistance at least one wheel revolutions.
Summary of the invention
A kind of motor vehicle braking system, it comprises actuating unit, described actuating unit is configured to optionally produce predetermined mechanical response and produces resistance with the rotation to wheel.Can only when existing, one or more predetermined states just work by first input media of driver's operation to impelling actuating unit to produce predetermined mechanical response.Can work irrelevant to impelling actuating unit to produce predetermined mechanical response by second input media of driver's operation with the existence of one or more predetermined states.
First input media is stretcher preferably, and the preferably manual device of second input media pressure converter in the steering handwheel shell for example.Therefore the present invention only starts the manual brake system input media that approaches hand of driver under situation about limiting, and works to making car brakeing, to reduce the possibility of implementing braking unintentionally.
Described predetermined state preferably includes the state and the driving condition of representing that existence stops and goes that the expression vehicle has the collision risk of rising.
From below in conjunction with accompanying drawing to readily understanding above-mentioned feature and advantage of the present invention and further feature and advantage the detailed description of implementing best mode of the present invention and carrying out.
Description of drawings
Fig. 1 is the scheme drawing that is operably connected to the brake system on the collision avoidance system that is used for vehicle;
Fig. 2 be vehicle with brake system shown in Figure 1 and collision avoidance system be in the very dangerous potential condition of object collision under scheme drawing;
Fig. 3 is the diagram of circuit that is used for optionally making the method that can be started by the brake system input media of driver's operation;
Fig. 4 is the diagram of circuit that is used for optionally making the another kind of method that can be started by the brake system input media of driver's operation; And
Fig. 5 is the perspective schematic view that is used for alternative steering handwheel structure vehicle shown in Figure 1, that comprise propulsion system input media and brake system input media.
The specific embodiment
With reference to Fig. 1, vehicle 10 comprises brake system 14, collision avoidance system 18, propulsion system 22 and the drive condition decision system 26 (DCDS) of line traffic control.Brake system 14 comprise two can be by the brake system input media 30,34 of driver's operation.Input media the 30, the 34th, the part of people/car interface device can change into the electric signal of representing driver intention with the machinery input of chaufeur.Input media 30 comprises the braking footrest 38 that is operably connected on the conv 42, and conv 42 will change into electric control signal 46 from the mechanical control signal of chaufeur.Conv 42 adopts various sensor and produces expression brake pedal 38 positions, is applied to the power on the brake pedal 38 and the signal 46 of brake pedal moving velocity.
Brake system controller 62 is configured to according to predetermined algorithm signal 46,58 be handled, and produces actuating mechanism controls signal 66 according to described algorithm.Actuating mechanism controls signal 66 is passed to brake system actuating unit 70, and brake system actuating unit 70 is configured to actuating mechanism controls signal 66 is produced predetermined mechanical response.
It will be appreciated by those skilled in the art that and in scope of the presently claimed invention, can adopt multiple brake system actuating unit.For example, electrohydraulic actuator, servomotor, magnet coil or the like of brake system actuating unit 70.Brake system actuating unit 70 is operably connected on the wheel 74 and response comes the actuating mechanism controls signal 66 of automatic brake system controller 62 and optionally produces the resistance that wheel 74 is rotated.In an illustrated embodiment, the brake system actuating unit is operably connected on the brake clamp 78 and brake clamp 78 is engaged with braking runner 82.In scope of the presently claimed invention, can adopt other stop mechanism, for example in regeneration brake, adopt electrical motor as the resistance of actuating unit generation to wheel revolutions.
Brake system 14 in a preferred embodiment is " line traffic controls ", just conductive path for example electric wire or printed circuit board (PCB) and brake system each component interconnect and will be sent to controller 62 from the control signal of input media, and the signal of self-controller 62 is sent to actuating unit 70 in the future.But in scope of the presently claimed invention, can adopt any brake system.Those skilled in the art also recognizes, has several different methods and media to be used for transmitting and received signal between parts, comprises that machinery is connected with hydraulic pressure, fiber-optic signal transmits, transmission of wireless signals or the like.
Propulsion system 22 comprises that the chemical power that energy stored for example is stored to the fuel form is converted into mechanical energy so that the energy conversion system of wheel 74 rotations.In an illustrated embodiment, energy conversion device comprises by input shaft 94 and is connected to combustion engine 86 on the automatic driver 90.Automatic driver 90 is connected on the wheel 74 by output shaft 98.The U.S. Patent No. 4 of authorizing Polak on January 31st, 1978,070,927 and the US Patent 5,601 of authorizing people such as Long on February 11st, 1997, described schematic automatic driver in 506, the full content that is incorporated herein above-mentioned patent as a reference.
Propulsion system input media 102 comprises the stretcher that is operably connected on the conv 110 Das Gaspedal 106 just, and conv 110 will change into electric control signal 114 from the mechanical control signal of chaufeur.Conv 110 adopts various sensor and produces the expression accelerator pedal position, is applied to the power on the Das Gaspedal and the signal 114 of Das Gaspedal moving velocity.Propulsion system controller 118 is configured to according to pre-defined algorithm control signal 122 is handled and produced to the signal 114 from conv 110, and this control signal 122 of driving engine 86 responses produces torque and power.More particularly, propulsion system controller 118 produces signal 122, this signal 122 of engine response comprises signal change throttle (not shown) position from conv 110 based on the various inputs to the propulsion system controller, correspondingly changes the power and the torque output of driving engine.
Propulsion system controller 118 also produces control signal 126 by driving device 90 response to determine one of a plurality of discrete speed ratios between input shaft 94 and output shaft 98.More particularly, propulsion system controller 118 produces signal 126, and driving device responds the speed ratio that this signal 126 changes between input shaft and the output shaft.
Collision avoidance system 18 comprises anticollision sensor 130 and collision avoidance system controller 134.Sensor 130 is monitored environment and signal 138 is sent to collision avoidance system controller 134, and signal 138 is carrying the sensor information of describing the vehicle environmental condition.Collision avoidance system controller 134 is incorporated into program, analyzes the sensor information from signal 138, to determine whether existing one or more expression vehicles to have the predetermined vehicle-state of the collision risk of rising.Controller 134 comprises and has information storage medium stores information therefor 142, and controller 134 adopts described canned data to determine the existence of one or more predetermined states based on sensor information or do not exist.It will be appreciated by those skilled in the art that described canned data can have many forms in scope of the presently claimed invention, for example relational database, look-up table, formula or the like.
It will be appreciated by those skilled in the art that the structure that in scope of the presently claimed invention, can adopt multiple collision avoidance system 18.For example sensor 130 can comprise radar sensor, video sensor, opto-electronic pickup or the like.Collision avoidance system also can comprise the radar transmitter (not shown).
Anticollision controller 134 is incorporated into program and is formed at and produces the signal 146 that the expression vehicle has the collision risk of rising when controller 134 is determined existing of one or more predetermined states.Signal 146 is sent to brake system controller 62 and is sent to propulsion system controller 118.The U.S. Patent application No.10/272 of the common transfer of submitting on October 15th, 2002 has described schematic collision avoidance system in 532, at this full content of quoting this application as a reference.
DCDS26 comprises and is configured to monitor environment and signal 154 is sent to the sensor 150 of DCDS controller 158 that signal 154 is carrying the sensor information of describing the vehicle environmental condition.Controller 158 is incorporated into program, analyzes the sensor information from signal 154, to determine whether existing expression to have and stop and to go the one or more predetermined vehicle-state of driving condition of (stop-and-go).That is to say controller 158 determines whether vehicle 10 may be in vehicle acceleration that need replace and the running state of slowing down more than predetermined occurrence frequency.For example, if vehicle quicken to surpass the number of times that predetermined value then slows down above predetermined value and surpasses the predetermined times value in predetermined time duration, the driving condition that stops and go can appear then.
Controller 158 comprises having information storage medium stores information therefor 162, controller 158 adopt described canned data based on determine from the sensor information of sensor 150 expression have the driving condition that stops and go one or more predetermined states existence or do not exist.It will be appreciated by those skilled in the art that at scope inner storag information of the presently claimed invention to have many forms, for example relational database, look-up table, formula or the like.
In illustrative examples, sensor 150 is global positioning system (GPS) sensors of determining vehicle 10 positions, and the information that is stored in storage medium 162 comprises cartographic information.Controller 158 is compared vehicle location with cartographic information, to determine for example whether vehicle 10 is in the density of population zone higher than predetermined value, or be not on the street of a cross roads that in predetermined phase mutual edge distance, has an a predetermined level is exceeded, vehicle needs to stop at described cross roads.Equally, controller can detect whether vehicle is positioned on the express highway to be lower than preset vehicle speed, and described preset vehicle speed can be represented to have and regularly constantly is forced to the driving condition that stops.
In another illustrative examples, sensor 150 is configured to reclaim real time execution information.For example, the transmitting set (not shown) can be sent to sensor 150 with the information of representing the running state at vehicle location place.Also in another illustrative examples, sensor 150 monitor vehicle speed, and controller 158 is analyzed the recent trend of car speeds.Frequent starting and parking or other frequent variations on acceleration/accel can represent to exist the driving condition that stops and go.
Also in the another one illustrative examples, the action of sensor 150 brake monitoring system input devices 30,34 and propulsion system input media 102.The chaufeur driving condition that conversion expression existence stops and goes between brake system input media 30,34 and propulsion system input media 102 continually.
Determine that at least one expression stops and the driving condition of going when existing when controller 158, controller 158 is sent to brake system controller 62 with signal 166.
Brake system 14 is configured to only can operate so that car brakeing just produces the resistance to wheel revolutions the input media on the steering handwheel 54 34 when having one or more predetermined state.More particularly, brake system controller 62 is incorporated into program and only is configured to and transmits the signal 146 that the expression vehicles have very big collision risk when collision avoidance system controller 134, or the DCDS controller when transmitting the signal 166 that there is the driving condition that stops and go in expression response from the signal 58 of input media 34 and generation actuating mechanism controls signal 66.
In other words, only when collision avoidance system controller 134 is determined automobile storage at very big collision risk based on sensor 130, perhaps when DCDS controller 158 determines that based on sensor 150 vehicle may be in the driving condition that stops and go, just can operate so that car brakeing the input media on the steering handwheel 54 34.Effectively haveing nothing to do of motor vehicle braking system input media 30 with one or more predetermined states.
In a preferred embodiment, DCDS controller 158 also transmits signal 166 to indicating device 170.Indicating device 170 response signals 166 and produce can be by the observable indication 174 of vehicle driver, chaufeur input medias 34 are pointed out in this indication 174 to be exercisable or to be exercisable behind preset time.It will be appreciated by those skilled in the art that in scope of the presently claimed invention and can adopt multiple indicating device.For example, indicating device 170 can provide the light-emitting diode (LED) or the indicator lamp of visible signal, can provide the loud speaker of aud. snl. or other audible signal.Other indication comprises demonstration information, symbol, tactile feedback or the like.
In addition, in a preferred embodiment, power input device conv 110 is sent to brake system controller 62 to provide a description the information of accelerator pedal position to brake system controller 62 with signal 114.Brake system controller 62 is incorporated into program and only is configured to just to respond when signal 114 indication Das Gaspedals 106 are not depressed and produce zero torque by chaufeur control thus from the signal 58 of input media 34 and generation actuating mechanism controls signal 66.
In a preferred embodiment, anticollision controller 134 also is sent to propulsion system controller 118 with signal 146.The propulsion system controller is configured to response signal 146 lowers category driving device 90, just makes driving device 90 become second speed ratio higher than first speed ratio from first speed ratio.Propulsion system controller 118 is constructed such that also driving engine 86 for example reduces torque and power output by closed throttle disk, and do not take the position or the power driven system control signal 114 of Das Gaspedal into account, in vehicle has the process of very big collision risk, Das Gaspedal was lost efficacy thus.
In scope of the presently claimed invention, can be with one or more combining in the controller 62,118,134,158.Like this, for example single controller can be configured to receive and handle the signal from conv 42,50,110 and sensor 130,150, and produces signal 66,122,126.
With reference to Fig. 2, wherein identical Reference numeral relates to the parts identical with Fig. 1, and vehicle 10 comprises brake system 14, collision avoidance system 18, propulsion system 22 and is installed in the interior drive condition decision system DCDS26 of vehicle.Sensor 130 is configured to monitor two vehicle-states just in the appearance of the object 178 on vehicle 10 courses and the distance between object 178 and the vehicle 10.The collision avoidance system controller is incorporated into program to determine the rate of change of above-mentioned distance, just the speed that distance reduces between vehicle 10 and the object 178.When the distance between object 178 and the vehicle 10 during less than predetermined value, and rate of change then satisfies predetermined state more than predetermined value, and the collision avoidance system controller sends the signal that expression has the collision risk of rising.
Referring now to Fig. 3, schematically shown a kind of method that is used for optionally making brake system to start by the input media of driver's operation.A kind of schematic control logic that is used for brake system and collision avoidance system combination of this method representative.This method comprises that the monitoring environment is to determine exist (step 182) of at least one preset vehicle state.This method comprises that also monitoring can want the signal of implementing to brake (step 186) to determine the expression chaufeur by the input media of driver's operation.This method comprises also whether inquiry exists at least one predetermined vehicle-state (step 190).If whether the result, then the brake system controller can not respond the signal from input media, and input media becomes inoperative to causing braking thus.If inquire about 190 result for being that then input media works to brake.Like this, next step is exactly whether inquiry exists expression to want the signal of implementing to brake (step 194).If the result is for being, then this method comprises and implements braking (step 198).
With reference to Fig. 4, represented the another kind of method that is used for optionally making the motor vehicle braking system startup.Method representative shown in Figure 4 is used for another schematic control logic of vehicle shown in Figure 1.This method comprises monitor vehicle state (step 182), with the appearance of determining at least one predetermined state or exist.This method comprises also whether inquiry exists first predetermined state (step 202).In a preferred embodiment, first predetermined state represents that vehicle has the collision risk of raising.If the result is for being, if just first predetermined state exists, then this method comprise make the propulsion system input media for example Das Gaspedal lost efficacy (step 206), inoperative thereby the propulsion system input media becomes to the control of propulsion system; This method also comprises makes driving device lower category (step 210); Start brake system input media (step 214), the brake system input media is worked optionally to produce the resistance to wheel revolutions.In a preferred embodiment, the propulsion system input media only just lost efficacy when not responding from signal that the propulsion system input media transmits.Equally, the signal that transmits from the brake system input media by response of brake system input media is activated just becoming and works to implement braking (if existence).
If, to the result of query steps 202 whether then this method comprises whether inquiry exists second predetermined state (step 218).In a preferred embodiment, second predetermined state represents that vehicle is in the driving condition that stops and go.If the result is for being, then this method comprises that the startup to the brake system input media produces realizable indication (step 222), and whether inquiry propulsion system input media has transmitted the signal (step 226) of torque of control energy converting system or power.If then the brake system input media is not activated.If whether the result, then this method comprises startup brake system input media (step 214).It should be noted, can expect that the startup to the brake system input media produces realizable indication after step 202 is determined the existence of first predetermined state.
If there is no first and second predetermined states, then this method comprises whether inquiry starts brake system input media (step 230), if, then for example the brake system input media was lost efficacy (step 234) by the control signal that does not respond from input media, inoperative thereby input media subtend wheel revolutions produces resistance.This method comprises also whether inquiry propulsion system input media lost efficacy (step 238), if then start propulsion system input media (step 242).
Can expect under the non-existent situation of first and second predetermined states inefficacy of indication brake equipment or inoperative to causing braking.
With reference to Fig. 5, wherein identical Reference numeral relates to parts identical among Fig. 1 and 2, has schematically shown the alternative steering handwheel assembly 54 ' that is used for vehicle shown in Figure 1.This steering handwheel assembly 54 ' comprises by a plurality of disc 254 interconnective dish hub 246 and edges 250.This steering handwheel assembly 54 ' also comprises manual propulsion system input media 102 ', and this propulsion system input media 102 ' comprises button 258 and is configured to based on the position of button 258 and the conv 262 that produces the control signal 114 that is sent to propulsion system controller (representing with 118) in Fig. 1 that moves.Steering handwheel assembly 54 ' also comprises alternative manual brake system input media 34 ', and this brake system input media 34 ' comprises button 266 and is configured to produce the conv 270 of the control signal 58 that is sent to brake system controller (representing with 62) in Fig. 1.Can expect that manual propulsion system input media 102 ' is to be used to stop and the driving condition of going.
Implement best mode of the present invention although described in detail, those are familiar with those skilled in the art in the invention and will recognize that, the various variations of implementing the solution of the present invention and embodiment all are in the scope of additional claim.
Claims (19)
1. motor vehicle braking system, it comprises:
Actuating unit, described actuating unit are operably connected on the wheel and are configured to optionally produce predetermined mechanical response and produce resistance with the rotation to described wheel;
Can be by first input media of driver's operation, described can only when at least one predetermined state exists, just working by first input media of driver's operation to impel described actuating unit to produce predetermined mechanical response; And
Can be by second input media of driver's operation, described can be irrelevant to impelling described actuating unit to produce the existence of situation that described predetermined mechanical response works and described at least one predetermined state by second input media of driver's operation.
2. motor vehicle braking system as claimed in claim 1 is characterized in that, described can be manual by first input media of driver's operation, and described can the operation with pin by second input media of driver's operation.
3. motor vehicle braking system as claimed in claim 2 is characterized in that, also comprises steering handwheel, wherein said can be on described steering handwheel by first input media of driver's operation.
4. vehicle, it comprises:
At least one wheel; Having can be by the first brake system input media of driver's operation and can be by the brake system of the secondary brake system input media of driver's operation, and described brake system is configured to selectively produce the resistance to the rotation of described at least one wheel; At least one controller; And at least one sensor, be configured to monitor at least one vehicle-state and will represent that the sensor signal of described at least one vehicle-state is sent to described at least one controller;
Wherein, described at least one controller is configured to determine that described sensor signal represents that at least one predetermined vehicle-state exists and still do not exist; Described brake system operationally is connected on described at least one controller, just works when existing to produce the resistance to the rotation of described at least one wheel so that described first input media is only determined described at least one predetermined state when described at least one controller; And the rotation of described at least one wheel of the described second input media subtend produces the existence of resistance role and described at least one predetermined state or does not exist irrelevant.
5. vehicle as claimed in claim 4 is characterized in that, described first input media is manual, and described second input media is operated with pin.
6. vehicle as claimed in claim 4 is characterized in that described brake system also comprises the brake system actuating unit; Wherein said first input media and second input media are configured to transmit control signal to described at least one controller; Described at least one controller operationally is connected on the described actuating unit, optionally to make described actuating unit the rotation of described at least one wheel is produced resistance; Described at least one controller is incorporated into program, so that described actuating unit only determines when described at least one controller that described at least one predetermined vehicle-state just responds when existing from the control signal of described first input media rotation of described at least one wheel is produced resistance.
7. vehicle as claimed in claim 4 is characterized in that, described at least one predetermined state represents that vehicle has the collision risk of raising.
8. vehicle as claimed in claim 7, it is characterized in that, also comprise propulsion system, described propulsion system comprises the energy conversion system that is configured to optionally provide to described at least one wheel torque, also comprising can be by the propulsion system input media of driver's operation, and it is configured to produce the torque value that is offered described at least one wheel by the control signal of described energy conversion system response with change; Described at least one controller operationally is connected on the described propulsion system, so that described propulsion system input media is inoperative to the torque that is provided by described energy conversion system is provided when described at least one controller determines that described at least one predetermined state exists.
9. vehicle as claimed in claim 7 is characterized in that, also comprises propulsion system, and described propulsion system comprises having input shaft and output shaft drive, and described output shaft fully is configured to optionally to described at least one wheel transmitting torque; Described driving device is configured to optionally determine a plurality of speed ratios between described input shaft and output shaft; Described driving device operationally is connected on described at least one controller so that described driving device when described at least one controller determines that described at least one predetermined state exists from first speed ratio, second speed ratio higher that lower category than described first speed ratio.
10. vehicle as claimed in claim 4 is characterized in that, described at least one predetermined state is represented replacing of vehicle acceleration and deceleration.
11. vehicle as claimed in claim 10, it is characterized in that, also comprise propulsion system, described propulsion system comprises the energy conversion system that is configured to optionally provide to described at least one wheel torque, also comprising can be by the propulsion system input media of driver's operation, and it is configured to optionally to produce the torque value that is offered described at least one wheel by the control signal of the expression controlling torque of described energy conversion system response with change; Described at least one controller operationally is connected on the described propulsion system so that the described first brake system input media only when described control signal indication zero controlling torque just the rotation of described at least one wheel of subtend produce resistance and work.
12. vehicle as claimed in claim 10 is characterized in that, also comprises the propulsion system that operationally is connected on described at least one wheel; Steering handwheel, and on described steering handwheel or near described steering handwheel and being configured to, optionally produce manual propulsion system input media by the propulsion system control signal of described propulsion system response.
13. vehicle as claimed in claim 4 is characterized in that, also comprises the indicating device that operationally is connected on described at least one controller and is configured to optionally produce the appreciable indication of people; Described at least one controller is configured to determine described at least one predetermined state when described at least one controller makes described indicating device produce indication when existing.
14. a method, it comprises:
The running environment of monitor vehicle to be determining existing or not existing of predetermined state, and described vehicle comprises that have can be by the first brake system input media of driver's operation and can be by the brake system of the secondary brake system input media of driver's operation; And
Make the described first brake system input media respond not existing of described predetermined state and the wheel revolutions of the described vehicle of subtend to produce resistance inoperative.
15. method as claimed in claim 14 is characterized in that, also comprises making the described first brake system input media respond the existence of described predetermined state and working to produce resistance to the wheel revolutions of described vehicle.
16. method as claimed in claim 15 is characterized in that, comprises that also make can be inoperative by existing of described at least one predetermined state of the propulsion system input media of driver's operation response.
17. method as claimed in claim 15 is characterized in that, comprises that also the existence that responds described at least one predetermined state lowers category driving device.
18. method as claimed in claim 15 is characterized in that, comprises that also the existence that responds described at least one predetermined state produces the realizable indication of chaufeur.
19. method as claimed in claim 14, it is characterized in that, comprise that also the existence that makes the described first brake system input media only just respond described predetermined state under propulsion system input media indication propulsion system is the situation of zero controlling torque works with the wheel revolutions generation resistance to described vehicle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48804303P | 2003-07-17 | 2003-07-17 | |
| US60/488,043 | 2003-07-17 | ||
| US10/888,489 | 2004-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1822974A true CN1822974A (en) | 2006-08-23 |
Family
ID=36923781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200480020668 Pending CN1822974A (en) | 2003-07-17 | 2004-07-14 | Vehicle braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1822974A (en) |
-
2004
- 2004-07-14 CN CN 200480020668 patent/CN1822974A/en active Pending
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