WO2017017764A1 - 制動制御装置及び制動制御方法 - Google Patents
制動制御装置及び制動制御方法 Download PDFInfo
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- WO2017017764A1 WO2017017764A1 PCT/JP2015/071257 JP2015071257W WO2017017764A1 WO 2017017764 A1 WO2017017764 A1 WO 2017017764A1 JP 2015071257 W JP2015071257 W JP 2015071257W WO 2017017764 A1 WO2017017764 A1 WO 2017017764A1
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- braking
- braking device
- host vehicle
- main
- vehicle
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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
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
- B60T8/17552—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve responsive to the tire sideslip angle or the vehicle body slip angle
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
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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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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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
- B60T8/17—Using electrical or electronic regulation means to control braking
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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
- B60T8/17—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
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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
- B60T8/24—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 vehicle inclination or change of direction, e.g. negotiating bends
- B60T8/245—Longitudinal vehicle inclination
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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
- B60T8/34—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 having a fluid pressure regulator responsive to a speed condition
- B60T8/48—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 having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
- B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
- B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
- B60W10/182—Conjoint control of vehicle sub-units of different type or different function including control of braking systems including control of parking brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
- B60W10/184—Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/14—Adaptive cruise control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/14—Adaptive cruise control
- B60W30/16—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
- B60W30/17—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle with provision for special action when the preceding vehicle comes to a halt, e.g. stop and go
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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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/06—Hill holder; Start aid systems on inclined road
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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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/10—Automatic or semi-automatic parking aid systems
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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
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
- B60T2210/10—Detection or estimation of road conditions
- B60T2210/12—Friction
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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
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
- B60T2210/30—Environment conditions or position therewithin
- B60T2210/32—Vehicle surroundings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/40—Coefficient of friction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2556/00—Input parameters relating to data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2556/00—Input parameters relating to data
- B60W2556/10—Historical data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/81—Braking systems
Definitions
- the present invention relates to a braking control device and a method for automatically controlling a main braking device that is normally used for braking a host vehicle that is running and a second braking device that is used to maintain the stopped state of the host vehicle.
- Patent Document 1 is disclosed as a travel control device that automatically controls such a main braking device.
- the braking force by the main braking device is limited to a certain time, and thereafter, control is performed so as to switch to a second braking device such as a parking brake. This is because the durability of the pump is taken into consideration because the main braking device increases the hydraulic pressure with the pump to exert the braking force.
- the second braking device when switching from the main braking device to the second braking device, the second braking device is generally configured to brake only the two rear wheels of the vehicle. Therefore, the main braking device brakes all four wheels. Switch to a state where only 2 wheels are braked. In this case, there is a possibility that the vehicle can not be supported and the stop state cannot be maintained in a situation where the vehicle easily slips on a road surface with a low friction coefficient or a steep road. At this time, even if an alarm is sounded to the occupant, there is a problem that the time from when the alarm is sounded until the vehicle starts to slide is too short, and there is no time for the occupant to operate the main braking device.
- a driving support system such as adaptive cruise control
- the driving support system is released urgently, and the main braking device shifts to the second braking device.
- the occupant removes the seat belt or opens the door and is in a position that is not suitable for driving, so even if the occupant tries to operate the main brake device to stop the body that started to slide, operate it. It was not possible to ensure sufficient time for.
- the present invention has been proposed in view of the above-described circumstances, and ensures the time for the occupant to operate the main braking device even when the main braking device is switched to the second braking device in a situation where slipping easily occurs. It is an object of the present invention to provide a braking control device and a method thereof.
- a braking control apparatus and method predicts a slip degree indicating a possibility that the host vehicle will slip, and the host vehicle is in a stopped holding state by the main braking device.
- the main braking device is switched to the second braking device. At this time, the timing at which the braking force of the main braking device decreases to a predetermined value or less is delayed as the predicted slip degree increases.
- the timing at which the braking force of the main braking device decreases according to the slip degree is delayed. Can secure time for operating the main braking device.
- FIG. 1 is a block diagram showing the configuration of the braking control system according to the first embodiment of the present invention.
- FIG. 2 is a view for explaining an arrangement on the vehicle of the braking control system according to the first embodiment of the present invention.
- FIG. 3 is a diagram for explaining a slip degree prediction method by the braking control apparatus according to the first embodiment of the present invention.
- FIG. 4 is a view for explaining a slip degree prediction method by the braking control apparatus according to the first embodiment of the present invention.
- FIG. 5 is a flowchart showing a processing procedure of braking control processing by the braking control device according to the first embodiment of the present invention.
- FIG. 1 is a block diagram showing the configuration of the braking control system according to the first embodiment of the present invention.
- FIG. 2 is a view for explaining an arrangement on the vehicle of the braking control system according to the first embodiment of the present invention.
- FIG. 3 is a diagram for explaining a slip degree prediction method by the braking control apparatus according to the first embodiment of the present
- FIG. 6 is a diagram for explaining a switching method from the main braking device at the normal time to the second braking device by the braking control device according to the first embodiment of the present invention.
- FIG. 7 is a view for explaining a switching method from the main braking device to the second braking device in an emergency by the braking control device according to the first embodiment of the present invention.
- FIG. 8 is a view for explaining a switching method from the main braking device to the second braking device in an emergency by the braking control device according to the first embodiment of the present invention.
- FIG. 9 is a diagram for explaining a switching method from the main braking device to the second braking device in an emergency by the braking control device according to the modified example of the present invention.
- FIG. 7 is a view for explaining a switching method from the main braking device to the second braking device in an emergency by the braking control device according to the first embodiment of the present invention.
- FIG. 8 is a view for explaining a switching method from the main braking device to the second
- FIG. 10 is a diagram for explaining a switching method from the main braking device to the second braking device in an emergency by the braking control device according to the modification of the present invention.
- FIG. 11 is a flowchart showing a processing procedure of braking control processing by the braking control device according to the second embodiment of the present invention.
- FIG. 12 is a flowchart showing a processing procedure of the braking control processing by the braking control device according to the third embodiment of the present invention.
- FIG. 1 is a block diagram illustrating a configuration of a braking control system including a braking control device according to the present embodiment.
- FIG. 2 is a diagram illustrating an arrangement on the vehicle of the braking control system according to the present embodiment.
- the braking control system 1 includes a vehicle drive controller 3, an engine controller 5, a wiper operation switch 7, a front camera 9, a communication unit 11, and a GPS receiver 13. It has.
- the braking control system 1 includes an acceleration sensor 15, a navigation device 17, a front radar 19, a vehicle speed sensor 21, a brake pedal switch 23, a seat belt sensor 25, and a door sensor 27.
- the braking control system 1 includes a driving support controller 29, a main braking device 31, a second braking device 33, a display 35, a speaker 37, and a braking control device 100.
- the braking control system 1 having such a configuration is mounted on a vehicle, and the mounted vehicle is equipped with a system that travels following a preceding vehicle ahead of the host vehicle, such as adaptive cruise control.
- the vehicle drive controller 3 includes a system for controlling the drive of the vehicle such as an anti-lock brake system, a traction control system, and a vehicle dynamics control.
- the engine controller 5 is a controller that controls the engine. There is a switch for selecting the engine operating mode near the driver's seat of the vehicle, and when the snow mode is selected there, the tires are able to suppress rapid engine rotation even when the accelerator pedal is depressed suddenly on a road surface with a low coefficient of friction. Can prevent idling.
- the state of the engine controller 5 is used to determine whether the road surface has a low friction coefficient.
- the wiper operation switch 7 operates a wiper for wiping off raindrops and snow adhering to the front window.
- the state of the wiper operation switch 7 is used to determine whether the road surface has a low friction coefficient.
- the front camera 9 captures an image of the front of the host vehicle and acquires an image. From the captured image, the inter-vehicle distance and relative speed between the preceding vehicle and the host vehicle are detected, and the gradient and slip information displayed on the front sign and the electric bulletin board are read. These pieces of information are used to determine whether the road surface has a low friction coefficient or a steep road.
- the communication unit 11 transmits and receives information communication services using road-to-vehicle communication and mobile phone lines. Of the received information, weather and slip information are used to determine whether the road surface has a low friction coefficient.
- the GPS receiver 13 receives the current time information from the satellite in addition to the latitude, longitude, and altitude of the vehicle. If the latitude is high, the temperature tends to be low, and if the altitude is high, the temperature is likely to be low as well. Therefore, it can be used to determine whether the road surface has a low friction coefficient. Further, it is possible to determine whether the road is a slope road from the altitude information history.
- the acceleration sensor 15 measures acceleration applied to the host vehicle. In a stationary state, the inclination of the host vehicle can be detected by measuring the gravitational acceleration component. This makes it possible to determine whether the road is a slope road.
- Navigation device 17 stores map information electronically and calculates a guide route to the destination of the vehicle. In addition, road gradient information is stored.
- the front radar 19 measures the inter-vehicle distance and relative speed between the preceding vehicle and the host vehicle using millimeter waves.
- the vehicle speed sensor 21 measures the vehicle speed of the host vehicle.
- the brake pedal switch 23 detects whether or not the brake pedal is depressed.
- the seat belt sensor 25 detects whether or not the seat belt is fastened.
- the door sensor 27 detects the open / closed state of the door.
- the driving support controller 29 controls driving support systems such as adaptive cruise control, emergency brakes, and auto hold brakes, and automatic driving systems. Furthermore, you may provide the system which added the steering control function to adaptive cruise control.
- the driving support controller 29 uses the front camera 9 and the front radar 19 to measure the presence of the preceding vehicle and the inter-vehicle distance, and sends a command to the engine controller 5 and the braking control device 100 to accelerate and decelerate the host vehicle. And when a preceding vehicle stops, the own vehicle is also stopped and stop holding control is performed.
- the driving support controller 29 When there is no preceding vehicle, the driving support controller 29 performs vehicle speed control that keeps the set vehicle speed constant, and when there is a preceding vehicle, the driving support controller 29 performs inter-vehicle maintenance control that keeps the distance between the preceding vehicle constant. Do.
- the main braking device 31 is a brake that is commonly used for braking the host vehicle while traveling.
- the main brake device 31 increases the hydraulic pressure (brake hydraulic pressure) with a pump in conjunction with the brake pedal, and presses the brake pad against the brake rotor to brake the host vehicle. .
- the main braking device 31 is configured to apply braking to the four wheels of the host vehicle.
- the second braking device 33 is a brake used for maintaining the stop state of the host vehicle, such as a side brake and a parking brake, and is configured to apply braking to the two rear wheels of the host vehicle.
- the display 35 has a function of displaying system states such as adaptive cruise control, emergency braking, and auto hold brake, and displaying the operating state of the second braking device 33.
- the speaker 37 outputs sound in synchronism with the display when information is presented or a warning is issued from adaptive cruise control, emergency brake, auto hold brake or the like.
- the braking control device 100 is a controller that receives a command from the driving support controller 29 and automatically controls the main braking device 31 and the second braking device 33 to perform braking control of the host vehicle. In this embodiment, it is integrated with the vehicle drive controller 3 and mounted on the host vehicle.
- the braking control device 100 operates the main braking device 31 in accordance with commands from adaptive cruise control, emergency braking, and auto hold braking to perform stop holding control. And if the time limit of stop holding control is exceeded, it switches from the main braking device 31 to the 2nd braking device 33, and the main braking device 31 is cancelled
- the braking control device 100 having such a function includes a slip degree prediction unit 110 and a braking device switching unit 120.
- the slip degree prediction unit 110 predicts a slip degree indicating the possibility that the host vehicle will slip. As described below, the degree of slip increases as the possibility of slip increases.
- the slip degree may be predicted using only the friction coefficient prediction degree or the gradient prediction degree.
- the slip degree prediction unit 110 gives a score “a” when there is an operation history of a system that controls driving or braking of the host vehicle within a predetermined period in the past.
- the target system is at least one of an anti-lock braking system (ABS), a traction control system (TCS), and a vehicle stability control (VSC).
- ABS anti-lock braking system
- TCS traction control system
- VSC vehicle stability control
- the slip degree prediction unit 110 gives a score b when the traveling mode of the host vehicle is set to the snow mode, and gives a score c when the wiper of the host vehicle is in an operating state. Furthermore, the slip degree prediction unit 110 gives a score d according to the road display around the host vehicle. For example, if any of rain information, snow information, or slip information is posted on a sign or an electric bulletin board within a predetermined period in the past, a score d is given.
- the slip degree prediction unit 110 gives points e and f according to the road environment information around the host vehicle. For example, when the snow and rain weather information and slip information are received from the information communication service such as road-to-vehicle communication within the past predetermined time, a score e is given, and the outside temperature is below freezing point Is given a score f.
- the slip degree prediction unit 110 gives a score g if the current date and time, for example, the date is winter season, and gives a score h if the time is after sunset. Further, as the position information of the host vehicle, a point i is given if the latitude of the current location is a predetermined value or more, and a score j is given if the altitude of the current location is a predetermined value or more. These scores a to j may all be set to the same score, or may be set to a high score for important conditions.
- the degree of prediction of the coefficient of friction increases as the coefficient of friction of the road on which the vehicle travels is predicted to be lower. Therefore, the friction coefficient prediction degree predicts the low friction coefficient of the road on which the host vehicle is traveling.
- the slip degree prediction unit 110 gives a score A when the output value of the acceleration in the front-rear direction of the acceleration sensor 15 is a predetermined value or more. Further, when the distance difference value ⁇ h / ⁇ x ( ⁇ h: difference value of altitude, ⁇ x: difference value of distance) of the altitude information of the own vehicle acquired from the GPS receiver 13 is a predetermined value or more, a score B is given.
- the slip degree prediction unit 110 gives a score C when the road gradient value of the map information around the host vehicle acquired from the navigation device 17 is equal to or greater than a predetermined value. Further, when the numerical value of the sign indicating the gradient in the road display around the host vehicle is equal to or greater than a predetermined value, a score D is given. These scores A to D are set to different scores, and the highest score among the given scores is calculated as the gradient prediction degree. However, the scores A to D may be the same.
- the gradient prediction degree is for predicting the magnitude of the gradient of the road on which the host vehicle is traveling.
- the braking device switching unit 120 is in the main braking device 31 when the host vehicle is in the stopped holding state by the main braking device 31 and when the time limit for the stop holding control has elapsed or when the emergency release condition of the driving support system is satisfied. Is switched to the second braking device 33. At this time, the braking device switching unit 120 delays the timing at which the braking force of the main braking device 31 decreases to a predetermined value or less as the slip degree predicted by the slip degree prediction unit 110 increases. Specifically, as a method of delaying the timing when the braking force of the main braking device 31 decreases, in this embodiment, the timing for starting the decrease of the braking force of the main braking device 31 is delayed.
- the timing at which the braking force of the main braking device 31 decreases according to the degree of slip is delayed, it is possible to ensure time for the occupant to operate the main braking device 31 even when the host vehicle starts to slip by switching the braking device. it can.
- the braking control device 100 includes a general-purpose electronic circuit including a microcomputer, a microprocessor, and a CPU, and peripheral devices such as a memory. And by operating a specific program, it operates as the slip degree prediction unit 110 and the braking device switching unit 120 described above.
- step S10 when the set switch or resume switch is turned on by the driver, the driving support controller 29 operates a driving support system such as adaptive cruise control.
- a driving support system such as adaptive cruise control.
- the host vehicle travels with a certain distance between the preceding vehicle and the preceding vehicle by the following traveling control.
- step S20 when the preceding vehicle to be followed stops, the braking control device 100 automatically controls the main braking device 31 according to the instruction of the driving support controller 29 to stop the own vehicle. At this time, the host vehicle stops with a certain inter-vehicle distance from the preceding vehicle. Then, the braking control device 100 activates the stop holding control and puts the host vehicle in the stop holding state by the main braking device 31.
- step S30 the slip degree prediction unit 110 calculates the slip degree.
- the slip degree prediction unit 110 uses the tables shown in FIGS. 3 and 4 to calculate the friction coefficient prediction degree that predicts the friction coefficient of the road on which the host vehicle travels, and the road on which the host vehicle travels. The gradient prediction degree that predicted the gradient of is calculated. Then, the slip degree is calculated by multiplying the friction coefficient prediction degree and the gradient prediction degree.
- step S40 the braking control apparatus 100 determines whether or not the time after the stop holding control is activated is within the time limit.
- the time limit is a time set in consideration of the durability of the pump that increases the hydraulic pressure of the main braking device 31. Then, if the time after the stop holding control is activated is not within the time limit, the process proceeds to step S50, and if it is within the time limit, the process proceeds to step S70.
- step S50 the braking device switching unit 120 operates the second braking device 33 when the time after the stop holding control is activated exceeds the time limit. As shown in FIG. 6, when the braking device switching unit 120 detects a switching signal output when the time limit is exceeded, the braking device switching unit 120 first activates the second braking device 33. When the second braking device 33 is activated, an indicator indicating that the second braking device 33 is activated is lit on the display 35.
- step S60 the driving support controller 29 normally releases the driving support system when the second braking device 33 is activated. Accordingly, the braking device switching unit 120 switches from the main braking device 31 to the second braking device 33. That is, when the second braking device 33 is activated, the braking device switching unit 120 normally cancels the automatic control of the main braking device 31 that has been in charge of the stop-holding control so far and quickly releases the hydraulic pressure of the brake. Reduce power. Further, when the driving support system is released, a release notification image is displayed on the display 35, and a release notification sound is output from the speaker 37 to notify the driver. When the main braking device 31 is switched to the second braking device 33 in this way, the braking control process according to the present embodiment ends.
- step S70 the driving support controller 29 determines whether or not the emergency release condition is satisfied.
- the driving support controller 29 detects that the seat belt of the driver's seat has been removed by the seat belt sensor 25 or detects that the door of the driver's seat has been opened by the door sensor 27, the driving support controller 29 satisfies the emergency release condition. judge. If the emergency release condition is not satisfied, the process returns to step S40. If the emergency release condition is satisfied, the process proceeds to step S80.
- step S80 the brake device switching unit 120 operates the second brake device 33 when detecting that the emergency release condition is satisfied.
- the braking device switching unit 120 first activates the second braking device 33 when detecting a switching signal output when the emergency release condition is satisfied.
- an indicator indicating that the second braking device 33 is activated is lit on the display 35.
- step S90 the driving support controller 29 urgently releases the driving support system when the second braking device 33 is activated. Accordingly, the braking device switching unit 120 switches from the main braking device 31 to the second braking device 33. That is, when the second braking device 33 is activated, the braking device switching unit 120 urgently cancels the automatic control of the main braking device 31 that has been in charge of the stop holding control so far, and quickly releases the brake hydraulic pressure to control the braking device. Reduce power. At this time, the braking device switching unit 120 delays the timing at which the braking force of the main braking device 31 decreases to a predetermined value or less as the slip degree calculated in step S30 increases.
- the slip degree prediction unit 110 classifies the slip degrees calculated in step S30 into four levels 1 to 4.
- the classification method is to set three thresholds in advance, level 1 when the slip degree is smaller than the smallest threshold, level 2 when the smallest threshold or more, level 3 when the middle threshold or more, If it is greater than or equal to a large threshold, it is classified as level 4. That is, level 1 is a case where the slip degree is small and the possibility of the vehicle slipping is low, and level 4 is a case where the slip degree is large and the possibility of the vehicle slipping is high.
- the number of levels need not be limited to four, and may be more or less than four.
- the braking device switch part 120 delays the timing which starts the fall of the braking force of the main braking device 31 according to the classified level, as shown to Fig.7 (a).
- the timing for starting the reduction of the braking force is W and is not different from the normal time, but when the slip degree increases and becomes level 2, the timing for starting the reduction of the braking force is delayed.
- the timing for starting the reduction of the braking force is further delayed from Y to Z.
- the predetermined value is a value of the braking force of the main braking device 31 when the host vehicle starts to slip due to a decrease in the braking force, and may be obtained in advance through experiments or simulations, or depending on the degree of slip. It may be set each time. Since the timing at which the braking force of the main braking device 31 decreases is delayed in this way, even if the vehicle is switched from the main braking device 31 to the second braking device 33 on a road with a low friction coefficient or a steep road, The time for the occupant to operate the main braking device 31 can be secured.
- the braking device switching unit 120 may provide an upper limit value for a time during which the braking force of the main braking device 31 decreases to a predetermined value or less, and may change the upper limit value according to the slip degree. As shown in FIG. 8 (b), an upper limit value is set for the time during which the braking force decreases for each level corresponding to the slip degree. And the braking device switching part 120 reduces the braking force of the main braking device 31 so that this upper limit may not be exceeded, as shown to Fig.8 (a).
- the braking force of the main braking device 31 is reduced so as not to exceed the upper limit value W, and when the level is 2 to 4, the main braking device 31 is controlled so as not to exceed the upper limit values X, Y, Z. Reduce power.
- the upper limit value By providing the upper limit value in this way, long-time use of the main braking device 31 can be suppressed, and failure of the main braking device 31 can be reduced.
- a release notification image is displayed on the display 35, and a release notification sound is output from the speaker 37 to notify the driver.
- the main braking device 31 is switched to the second braking device 33 in this way, the braking control process according to the present embodiment ends.
- the timing at which the braking force of the main braking device 31 is reduced to a predetermined value or less is delayed by slowing down the speed at which the braking force of the main braking device 31 is reduced.
- the speed at which the braking force is reduced is W and is not different from the normal time, but when the slip degree is increased to level 2, the speed at which the braking force is reduced becomes slower.
- X When the slip degree further increases and reaches levels 3 and 4, the speed at which the braking force is reduced further decreases from Y to Z.
- the timing at which the braking force of the main braking device 31 decreases to a predetermined value or less is delayed.
- the timing at which the braking force of the main braking device 31 decreases to a predetermined value or less is delayed by gradually reducing the braking force of the main braking device 31.
- level 1 as shown by W, the braking force is decreased stepwise only once.
- the braking force is applied twice as shown by X. Decreasing gradually.
- the slip degree further increases and reaches levels 3 and 4, as indicated by Y and Z, the braking force is decreased stepwise 3 times and 4 times, respectively.
- the timing at which the braking force of the main braking device 31 decreases to a predetermined value or less is delayed.
- the timing at which the braking force of the main braking device 31 is reduced to a predetermined value or less is delayed by delaying the timing at which the braking force of the main braking device 31 is started.
- the timing at which the braking force of the main brake device 31 easily decreases can be obtained. Can be delayed.
- the timing at which the braking force of the main braking device 31 is reduced to a predetermined value or less is delayed by slowing down the speed at which the braking force of the main braking device 31 is reduced.
- the timing at which the braking force of the main braking device 31 decreases to a predetermined value or less is delayed by gradually reducing the braking force of the main braking device 31.
- the braking force of the main braking device 31 gradually decreases, so that the occupant can grasp the decrease in the braking force, and the main braking device 31 can be operated easily.
- an upper limit value is provided for the time when the braking force of the main braking device 31 decreases to a predetermined value or less, and this upper limit value is changed according to the slip degree.
- the slip degree is predicted from the friction coefficient of the road on which the host vehicle travels.
- the slip degree is predicted from the gradient of the road on which the host vehicle travels. Therefore, when switching from the main braking device 31 to the second braking device 33 on a steep road, it is possible to reliably predict that the host vehicle slips and starts to move.
- the present embodiment is different from the first embodiment in that the braking control process is applied to the emergency brake.
- the emergency braking is performed when the driving support controller 29 determines the possibility of collision with the preceding vehicle from the distance between the preceding vehicle measured by the front camera 9 and determines that the possibility of collision is high. 31 is driven to stop the own vehicle.
- the driving support controller 29 performs stop holding control after the host vehicle stops, and issues a command to operate the second braking device 33 and release the main braking device 31 when a predetermined time has elapsed.
- step S ⁇ b> 110 the driving support controller 29 determines the possibility of a collision by detecting the inter-vehicle distance and the relative speed with the preceding vehicle based on information from the front camera 9 and the front radar 19.
- the possibility of collision is low, the possibility of collision is continuously determined in step S110, and when the possibility of collision is high, the process proceeds to step S120.
- Step S120 when the operation support controller 29 instructs the braking control device 100 to operate the emergency brake, the braking control device 100 automatically controls the main braking device 31 and decelerates until the own vehicle stops.
- the braking control device 100 activates the stop holding control, and the main braking device 31 puts the host vehicle in the stop holding state.
- step S130 to step S190 is the same as the processing from step S30 to step S90 of the first embodiment shown in FIG. Then, when the emergency brake is normally released in step S160, or when the emergency brake is emergency released in step S190 and switched from the main braking device 31 to the second braking device 33, the braking control process according to the present embodiment ends. .
- the main braking device is switched according to the slip degree when the main braking device 31 is switched to the second braking device 33 even when the emergency brake is operated.
- the timing at which the braking force 31 decreases is delayed.
- the time for the occupant to operate the main braking device 31 can be secured. it can.
- the present embodiment is different from the first embodiment in that the braking control process is applied to the auto hold brake.
- the auto-hold brake is stopped by driving the main braking device 31 even when the driver does not keep stepping on the brake pedal when the driving support system is not operating and the driver stops by acceleration / deceleration operation. Holding control is performed. Note that if the accelerator pedal is operated while the vehicle is stopped, the vehicle is started with the stop holding control canceled.
- step S ⁇ b> 210 the driving support controller 29 determines whether or not the driver is stepping on the brake pedal while the host vehicle is stopped based on information from the vehicle speed sensor 21 and the brake pedal switch 23. .
- the brake state is continuously determined in step S210, and when the driver is stepping on the brake pedal, the process proceeds to step S220.
- step S220 when the operation of the auto hold brake is instructed by the driving support controller 29, the brake control device 100 automatically controls the main brake device 31 with a predetermined brake fluid pressure to execute the stop holding control. To the stop holding state.
- step S230 to step S290 is the same as the processing from step S30 to step S90 of the first embodiment shown in FIG. Then, when the auto hold brake is normally released in step S260, or when the auto hold brake is urgently released in step S290 and switched from the main braking device 31 to the second braking device 33, the braking control processing according to the present embodiment is performed. finish.
Abstract
Description
[制動制御システムの構成]
図1は、本実施形態に係る制動制御装置を備えた制動制御システムの構成を示すブロック図である。図2は、本実施形態に係る制動制御システムの車両上の配置を示す図である。図1に示すように、本実施形態に係る制動制御システム1は、車両駆動コントローラ3と、エンジンコントローラ5と、ワイパー作動スイッチ7と、前方カメラ9と、通信ユニット11と、GPS受信機13とを備えている。また、制動制御システム1は、加速度センサ15と、ナビゲーション装置17と、前方レーダー19と、車速センサ21と、ブレーキペダルスイッチ23と、シートベルトセンサ25と、ドアセンサ27とを備えている。さらに、制動制御システム1は、運転支援コントローラ29と、主制動装置31と、第2制動装置33と、ディスプレイ35と、スピーカ37と、制動制御装置100とを備えている。このような構成の制動制御システム1は車両に搭載されており、搭載された車両にはアダプティブクルーズコントロール等の自車両前方の先行車に対して追従走行するシステムが装備されている。
スリップ度合=摩擦係数予測度合×勾配予測度合
ただし、スリップ度合は、摩擦係数予測度合だけ、あるいは勾配予測度合だけを用いて予測してもよい。
摩擦係数予測度合=a+b+c+d+e+f+g+h+i+j
となる。
勾配予測度合=MAX(A、B、C、D)
となる。
次に、本実施形態に係る制動制御装置100による制動制御処理の手順を図5のフローチャートを参照して説明する。
変形例1では、図9(a)に示すように、主制動装置31の制動力を低下させる速さを遅くすることで、主制動装置31の制動力が所定値以下まで低下するタイミングを遅らせる。例えば、レベル1の場合には、制動力を低下させる速さはWとなって通常時と変わらないが、スリップ度合が大きくなってレベル2になると、制動力を低下させる速さは遅くなってXとなる。そして、スリップ度合がさらに大きくなってレベル3、4になると、制動力を低下させる速さはYからZへとさらに遅くなっていく。このように主制動装置31の制動力を低下させる速さを遅くすることで、主制動装置31の制動力が所定値以下まで低下するタイミングを遅らせる。
変形例2では、図10(a)に示すように、主制動装置31の制動力を段階的に低下させることで、主制動装置31の制動力が所定値以下まで低下するタイミングを遅らせる。例えば、レベル1の場合には、Wで示すように制動力を1回だけ段階的に低下させているが、スリップ度合が大きくなってレベル2になると、Xで示すように制動力を2回段階的に低下させている。そして、スリップ度合がさらに大きくなってレベル3、4になると、Y、Zで示すように制動力をそれぞれ3回、4回段階的に低下させている。このように主制動装置31の制動力を段階的に低下させることで、主制動装置31の制動力が所定値以下まで低下するタイミングを遅らせる。
以上詳細に説明したように、本実施形態に係る制動制御装置100では、主制動装置31を第2制動装置33へ切り替えるときに、スリップ度合が大きくなるのに応じて主制動装置31の制動力が所定値以下まで低下するタイミングを遅らせる。これにより、摩擦係数の低い路面や急勾配の道路で主制動装置31から第2制動装置33へ切り替えられて自車両が滑り始めても、乗員が主制動装置31を操作する時間を確保することができる。
次に、本発明の第2実施形態に係る制動制御装置について図面を参照して説明する。尚、本実施形態に係る制動制御システムの構成は第1実施形態と同一なので、詳細な説明は省略する。
本実施形態では、制動制御処理を緊急ブレーキに適用したことが第1実施形態と相違している。緊急ブレーキは、運転支援コントローラ29が、前方カメラ9によって計測された先行車との間の車間距離から先行車との衝突可能性を判断し、衝突可能性が高いと判断したときに主制動装置31を駆動して自車両を停止させるものである。運転支援コントローラ29は、自車両の停止後には停止保持制御を行い、所定時間が経過すると、第2制動装置33を作動させて主制動装置31を解除するように指令を出す。
以上詳細に説明したように、本実施形態に係る制動制御装置100では、緊急ブレーキの作動時においても、主制動装置31を第2制動装置33へ切り替えるときに、スリップ度合に応じて主制動装置31の制動力が低下するタイミングを遅らせる。これにより、摩擦係数の低い路面や急勾配の道路で主制動装置31から第2制動装置33へ切り替えられて自車両が滑り始めても、乗員が主制動装置31を操作する時間を確保することができる。
次に、本発明の第3実施形態に係る制動制御装置について図面を参照して説明する。尚、本実施形態に係る制動制御システムの構成は第1実施形態と同一なので、詳細な説明は省略する。
本実施形態では、制動制御処理をオートホールドブレーキに適用したことが第1実施形態と相違している。オートホールドブレーキは、運転支援システムが作動しておらず、運転者による加減速の操作で停車しているときに、運転者がブレーキペダルを踏み続けなくても主制動装置31を駆動して停止保持制御を行うものである。尚、停止保持中にアクセルペダルが操作されると、停止保持制御を解除して自車両は発進する。
以上詳細に説明したように、本実施形態に係る制動制御装置100では、オートホールドブレーキの作動時においても、主制動装置31を第2制動装置33へ切り替えるときに、スリップ度合に応じて主制動装置31の制動力が低下するタイミングを遅らせる。これにより、摩擦係数の低い路面や急勾配の道路で主制動装置31から第2制動装置33へ切り替えられて自車両が滑り始めても、乗員が主制動装置31を操作する時間を確保することができる。
3 車両駆動コントローラ
5 エンジンコントローラ
7 ワイパー作動スイッチ
9 前方カメラ
11 通信ユニット
13 GPS受信機
15 加速度センサ
17 ナビゲーション装置
19 前方レーダー
21 車速センサ
23 ブレーキペダルスイッチ
25 シートベルトセンサ
27 ドアセンサ
29 運転支援コントローラ
31 主制動装置
33 第2制動装置
35 ディスプレイ
37 スピーカ
100 制動制御装置
110 スリップ度合予測部
120 制動装置切替部
Claims (8)
- 走行中の自車両の制動に常用する主制動装置と自車両の停止状態の保持に用いる第2制動装置とを自動制御する制動制御装置であって、
前記自車両がスリップする可能性を示すスリップ度合を予測するスリップ度合予測部と、
前記自車両が前記主制動装置によって停止保持状態のときに、前記主制動装置から前記第2制動装置へ切り替える制動装置切替部とを備え、
前記制動装置切替部は、前記主制動装置を前記第2制動装置へ切り替えるときに、前記スリップ度合予測部によって予測された前記スリップ度合が大きくなるのに応じて、前記主制動装置の制動力が所定値以下まで低下するタイミングを遅らせることを特徴とする制動制御装置。 - 前記制動装置切替部は、前記主制動装置の制動力の低下を開始するタイミングを遅らせることで、前記主制動装置の制動力が所定値以下まで低下するタイミングを遅らせることを特徴とする請求項1に記載の制動制御装置。
- 前記制動装置切替部は、前記主制動装置の制動力を低下させる速さを遅くすることで、前記主制動装置の制動力が所定値以下まで低下するタイミングを遅らせることを特徴とする請求項1に記載の制動制御装置。
- 前記制動装置切替部は、前記主制動装置の制動力を段階的に低下させることで、前記主制動装置の制動力が所定値以下まで低下するタイミングを遅らせることを特徴とする請求項1に記載の制動制御装置。
- 前記制動装置切替部は、前記主制動装置の制動力が所定値以下まで低下する時間に上限値を設け、前記上限値は前記スリップ度合に応じて変更することを特徴とする請求項1~4のいずれか1項に記載の制動制御装置。
- 前記スリップ度合予測部は、前記自車両が走行する道路の摩擦係数から前記スリップ度合を予測し、前記自車両の駆動または制動を制御するシステムの作動履歴、前記自車両の走行モード、前記自車両のワイパーの作動状態、前記自車両周囲の道路表示、前記自車両周囲の道路環境情報、現在の日時、前記自車両の位置情報のうちの少なくとも1つに基づいて前記スリップ度合を予測することを特徴とする請求項1~5のいずれか1項に記載の制動制御装置。
- 前記スリップ度合予測部は、前記自車両が走行する道路の勾配から前記スリップ度合を予測し、前記自車両の加速度センサの出力、前記自車両の高度情報、前記自車両周囲の地図情報、前記自車両周囲の道路表示のうちの少なくとも1つに基づいて前記スリップ度合を予測することを特徴とする請求項1~6のいずれか1項に記載の制動制御装置。
- 走行中の自車両の制動に常用する主制動装置と自車両の停止状態の保持に用いる第2制動装置とを自動制御する制動制御装置の制動制御方法であって、
前記制動制御装置は、
前記自車両がスリップする可能性を示すスリップ度合を予測し、
前記自車両が前記主制動装置によって停止保持状態のときに、前記主制動装置から前記第2制動装置へ切り替え、
前記主制動装置を前記第2制動装置へ切り替えるときに、予測された前記スリップ度合が大きくなるのに応じて、前記主制動装置の制動力が所定値以下まで低下するタイミングを遅らせることを特徴とする制動制御方法。
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MYPI2018700313A MY168945A (en) | 2015-07-27 | 2015-07-27 | Braking control device and braking control method |
KR1020187005054A KR101899764B1 (ko) | 2015-07-27 | 2015-07-27 | 제동 제어 장치 및 제동 제어 방법 |
BR112018001594-6A BR112018001594B1 (pt) | 2015-07-27 | 2015-07-27 | Dispositivo de controle de frenagem e método de controle de frenagem |
EP15899598.5A EP3330142B1 (en) | 2015-07-27 | 2015-07-27 | Braking control device and braking control method |
CA2993769A CA2993769C (en) | 2015-07-27 | 2015-07-27 | Braking control device and braking control method |
PCT/JP2015/071257 WO2017017764A1 (ja) | 2015-07-27 | 2015-07-27 | 制動制御装置及び制動制御方法 |
US15/744,126 US10766469B2 (en) | 2015-07-27 | 2015-07-27 | Braking control device and braking control method |
CN201580081938.3A CN107848505B (zh) | 2015-07-27 | 2015-07-27 | 制动控制装置和制动控制方法 |
MX2018000816A MX366383B (es) | 2015-07-27 | 2015-07-27 | Dispositivo de control de frenado y metodo de control de frenado. |
JP2017530501A JP6540805B2 (ja) | 2015-07-27 | 2015-07-27 | 制動制御装置及び制動制御方法 |
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US10407068B2 (en) * | 2016-11-22 | 2019-09-10 | Hyundai Motor Company | System and method of controlling automatic vehicle hold |
CN110816292A (zh) * | 2019-11-19 | 2020-02-21 | 湖南恒润汽车有限公司 | 一种电动汽车启动/驻车防溜车预警方法及系统 |
RU2740820C1 (ru) * | 2019-08-09 | 2021-01-21 | Тойота Дзидося Кабусики Кайся | Устройство помощи при вождении |
US20210061275A1 (en) * | 2018-02-02 | 2021-03-04 | Hitachi Automotive Systems, Ltd. | Vehicle Control Apparatus and Method for Controlling the Same, and Vehicle Control System |
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JP6631453B2 (ja) * | 2016-09-26 | 2020-01-15 | 株式会社アドヴィックス | 車両の制動制御装置 |
US10884808B2 (en) * | 2016-12-16 | 2021-01-05 | Accenture Global Solutions Limited | Edge computing platform |
GB2579202A (en) * | 2018-11-23 | 2020-06-17 | Caterpillar Sarl | A method of monitoring the brake performance of a machine |
TWI687329B (zh) * | 2018-12-19 | 2020-03-11 | 宏碁股份有限公司 | 剎車控制方法、剎車系統及車輛 |
CN109733358B (zh) * | 2018-12-28 | 2021-04-30 | 芜湖易泽中小企业公共服务股份有限公司 | 一种基于接近传感器的汽车安全驾驶系统及其驾驶方法 |
FR3103303B1 (fr) * | 2019-11-14 | 2022-07-22 | Continental Automotive | Détermination d’un coefficient de friction pour un véhicule sur une route |
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- 2015-07-27 KR KR1020187005054A patent/KR101899764B1/ko active IP Right Grant
- 2015-07-27 RU RU2018106898A patent/RU2669505C1/ru active
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- 2015-07-27 US US15/744,126 patent/US10766469B2/en active Active
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US10407068B2 (en) * | 2016-11-22 | 2019-09-10 | Hyundai Motor Company | System and method of controlling automatic vehicle hold |
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CN110816292A (zh) * | 2019-11-19 | 2020-02-21 | 湖南恒润汽车有限公司 | 一种电动汽车启动/驻车防溜车预警方法及系统 |
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MX2018000816A (es) | 2018-05-15 |
US10766469B2 (en) | 2020-09-08 |
US20180201241A1 (en) | 2018-07-19 |
EP3330142B1 (en) | 2019-10-02 |
CN107848505A (zh) | 2018-03-27 |
EP3330142A4 (en) | 2018-08-01 |
JPWO2017017764A1 (ja) | 2018-04-19 |
CN107848505B (zh) | 2019-03-08 |
BR112018001594A2 (ja) | 2018-09-18 |
CA2993769C (en) | 2018-09-25 |
EP3330142A1 (en) | 2018-06-06 |
MX366383B (es) | 2019-07-08 |
RU2669505C1 (ru) | 2018-10-11 |
BR112018001594B1 (pt) | 2022-12-13 |
KR101899764B1 (ko) | 2018-09-17 |
JP6540805B2 (ja) | 2019-07-10 |
KR20180021924A (ko) | 2018-03-05 |
CA2993769A1 (en) | 2017-02-02 |
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