WO2023084767A1 - 運転制御方法及び運転制御装置 - Google Patents
運転制御方法及び運転制御装置 Download PDFInfo
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- WO2023084767A1 WO2023084767A1 PCT/JP2021/041876 JP2021041876W WO2023084767A1 WO 2023084767 A1 WO2023084767 A1 WO 2023084767A1 JP 2021041876 W JP2021041876 W JP 2021041876W WO 2023084767 A1 WO2023084767 A1 WO 2023084767A1
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- control
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- lane
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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
- B60W30/10—Path keeping
- B60W30/12—Lane keeping
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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
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/023—Avoiding failures by using redundant parts
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/04—Monitoring the functioning of the control system
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
- B60W2050/022—Actuator failures
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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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
- B60W2050/0295—Inhibiting action of specific actuators or systems
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
- B60W2050/0297—Control Giving priority to different actuators or 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/223—Posture, e.g. hand, foot, or seat position, turned or inclined
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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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
- B60W2720/106—Longitudinal acceleration
Definitions
- the present invention relates to an operation control method and an operation control device.
- the operation control device described in Patent Document 1 executes lane keeping control or departure prevention control according to the lane width of the lane in which the vehicle is traveling and the vehicle speed of the vehicle.
- Patent Literature 1 does not determine whether or not an abnormality has occurred in the function of executing lane keeping control and perform control according to the determination result.
- the problem to be solved by the present invention is to determine a situation in which there is a possibility that an abnormality has occurred in the execution function of lane keeping control when controlling the own vehicle by lane keeping control and departure prevention control, and to It is an object of the present invention to provide a driving control method and a driving control device capable of controlling the driving of the own vehicle.
- the present invention determines whether or not the second control unit starts departure prevention control while lane keeping control is being executed by the first control unit. If it is determined to start, the lane keeping control being executed is terminated, deceleration control of the own vehicle is started, deviation prevention control is continued until the own vehicle stops by deceleration control, and the own vehicle stops by deceleration control. The above problem is solved by terminating the departure prevention control that is being executed when the
- the operation control device determines whether or not the second control unit starts the departure prevention control while the first control unit is executing the lane keeping control.
- the operation control device determines whether or not the second control unit starts the departure prevention control while the first control unit is executing the lane keeping control.
- FIG. 4 is a diagram showing an example of the positional relationship between the vehicle and lane boundaries when it is determined that the vehicle will deviate from the lane;
- FIG. 2 is a flow chart showing a procedure of an operation control method executed by the operation control device shown in FIG. 1;
- FIG. 4 is a diagram showing an example of the positional relationship between the vehicle and lane boundaries when it is determined that the vehicle will deviate from the lane;
- FIG. 2 is a flow chart showing a procedure of an operation control method executed by the operation control device shown in FIG. 1;
- FIG. 1 is a block diagram showing the configuration of an own vehicle 1 and an operation control device 100 that controls the autonomous operation of the own vehicle 1.
- the host vehicle 1 includes an operation control device 100, a detection device 101, a host vehicle position acquisition unit 102, a map database 103, an in-vehicle device 104, an output device 105, a steering device 106a, a braking device 106b, and a driving device 106c.
- the driving control device 100 executes the program stored in the ROM by the CPU, thereby controlling the steering device 106a, the braking device 106b and the driving device 106c of the own vehicle 1 to perform driving support control.
- the detection device 101 is, for example, an in-vehicle camera that captures images of the surroundings of the own vehicle 1.
- the detection device 101 detects lane boundary lines B1 and B2 of the lane L in which the vehicle 1 travels (see FIG. 2).
- the detection result of the detection device 101 is output to the operation control device 100 at predetermined time intervals.
- the own vehicle position acquisition unit 102 is composed of a GPS unit, a gyro sensor, a vehicle speed sensor, and the like.
- the own vehicle position acquisition unit 102 detects radio waves transmitted from a plurality of satellite communications by the GPS unit, periodically acquires the position information of the own vehicle 1, and acquires the acquired position information of the own vehicle 1 and the gyro sensor. and the vehicle speed acquired from the vehicle speed sensor, the current position of the vehicle 1 is detected.
- the position information of the own vehicle 1 detected by the own vehicle position acquisition unit 102 is output to the operation control device 100 at predetermined time intervals.
- the map database 103 is a memory that stores high-precision digital map information (high-precision map, dynamic map) including identification information of a plurality of lanes on a road, and is configured to be accessible from the operation control device 100. .
- the map information in the map database 103 also includes information about roads and/or lane curves and the size of the curves (for example, curvature or radius of curvature).
- the in-vehicle device 104 is various devices mounted in the vehicle, and operates by being operated by the driver.
- the in-vehicle device 104 includes a steering wheel 104a.
- the other vehicle-mounted devices 104 include accelerator pedals, brake pedals, navigation devices, direction indicators, wipers, lights, horns, other specific switches, and the like.
- the information is output to the operation control device 100 .
- the output device 105 is, for example, a display that outputs text information and/or image information or a speaker that outputs audio information.
- the steering device 106a has a steering actuator. Also, the steering actuator includes a motor or the like attached to a steering column shaft. The steering device 106 a performs steering control of the own vehicle 1 based on the steering angle of the steering wheel 104 a or a control signal input from the operation control device 100 .
- the braking device 106b includes a braking actuator. The braking device 106 b controls the braking operation of the host vehicle 1 based on the stroke amount of a brake pedal (not shown) or the like or a control signal input from the operation control device 100 .
- the drive device 106c operates the drive mechanism (in the case of an engine vehicle, the operation of the internal combustion engine) based on the stroke amount of an accelerator pedal (not shown) or the control signal input from the operation control device 100. , in an electric vehicle system, including the operation of the driving motor, and in a hybrid vehicle, including torque distribution between the internal combustion engine and the driving motor).
- the hands-off mode is a mode in which the driving control device 100 permits the vehicle 1 to run when the driver releases the steering wheel of the vehicle 1 .
- the operation control device 100 has a processor 10 .
- the processor 10 includes a ROM (Read Only Memory) that stores a program for controlling the operation of the own vehicle 1, a CPU (Central Processing Unit) that executes the program stored in the ROM, and an accessible storage device. It consists of functional RAM (random access memory).
- ROM Read Only Memory
- CPU Central Processing Unit
- RAM random access memory
- the operation circuit instead of or together with the CPU (Central Processing Unit), MPU (Micro Processing Unit), DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), etc. can be used.
- the processor 10 includes an abnormality determination section 14 and a vehicle control section 15 .
- the abnormality determination section 14 has a first abnormality determination section 14a and a second abnormality determination section 14b.
- the vehicle control section 15 has a first control section 11 , a second control section 12 and a vehicle speed control section 13 .
- the first control unit 11 , the second control unit 12 , the vehicle speed control unit 13 , the first abnormality determination unit 14 a and the second abnormality determination unit 14 b execute programs for realizing each function of the processor 10 .
- the operation control device 100 is mounted on the own vehicle 1, but the present invention is not limited to this, and the operation control device 100 may be a device that operates the own vehicle 1 remotely.
- the first control unit 11 executes lane keeping control to maintain the lateral position P of the vehicle 1 at a predetermined position within the driving lane L (see FIG. 2). Note that the lateral position P of the vehicle 1 is maintained near the center of the driving lane L when the first control unit 11 is executing the lane keeping control. That is, the first control unit 11 shifts the lateral position P of the vehicle 1 to the predetermined position of the driving lane L based on the lane boundary lines B1 and B2 detected by the detection device 101 or the driving lane information of the map database 03.
- the first control unit 11 controls the effect of switching the information acquisition means of the driving lane L between the detection device 101 and the map database 103, the road environment (cant, change in curvature of the driving lane L , changes in road width) and/or crosswinds, the lateral position P of the vehicle 1 is set to a predetermined position (near the center of the driving lane L) without making the driver feel uncomfortable.
- the steering device 106a is controlled to maintain.
- the first control unit 11 may adjust the yaw angle of the host vehicle 1 to perform lane keeping control by controlling the braking device 106b.
- the second control unit 12 executes departure prevention control to prevent the vehicle 1 from departing from the travel lane L based on the positions of the lane boundary lines B1 and B2 detected by the detection device 101 .
- the second control unit 12 starts deviation prevention control, controls the steering device 106a, and controls the vehicle.
- the direction of the own vehicle 1 is adjusted so that the vehicle 1 returns to the inside of the driving lane L.
- the second control unit 12 may adjust the yaw angle of the own vehicle 1 and execute departure prevention control by controlling the braking device 106b.
- the departure prevention control function of the second control unit 12 is ON even while the first control unit 11 is functioning normally.
- the second control unit 12 starts departure prevention control means that the second control unit 12 starts outputting a control signal to the vehicle control unit 15 based on the departure prevention control function.
- the second control unit 12 starts departure prevention control means that the second control unit 12 continuously outputs control signals to the vehicle control unit 15 based on the departure prevention control function.
- the second control unit 12 predicts that at least a part of the vehicle body of the vehicle 1 deviates from the lane boundary lines B1 and B2 of the driving lane L
- the second control unit 12 controls the steering device 106a to The traveling direction of the own vehicle 1 may be adjusted so that the vehicle remains inside the traveling lane L.
- the orientation of the vehicle 1 is not parallel to the extension direction of the travel lane L as shown in FIG. Calculate the shortest time T1 required until the Then, the second control unit 12 calculates the lateral movement amount X of the vehicle 1 on the assumption that the direction of the vehicle 1 becomes parallel to the extension direction of the driving lane L after the shortest time T1 has elapsed.
- the second control unit 12 moves the vehicle from the lane boundary line B1 of the driving lane L when the lateral movement amount X is greater than the distance D between the current lateral position P of the vehicle and the lane boundary line B1 (X>D). Departure prevention control is started by predicting that at least a part of the vehicle body of the vehicle 1 will deviate. On the other hand, when the lateral movement amount X is equal to or less than the distance D between the current lateral position P of the vehicle and the lane boundary line B1 (X ⁇ D), the second control unit 12 controls the vehicle 1 to move out of the driving lane L. Departure prevention control is not started.
- the second control unit 12 acquires the steering speed limit value ⁇ ′ of the own vehicle 1 .
- the second control unit 12 adds the steering angle change amount (t) obtained by integrating the steering speed limit value ⁇ ' over time t to the current initial steering angle ⁇ (0), Formula (1) below representing the steering angle ⁇ is created.
- ⁇ ⁇ (0)+ ⁇ (t) (1)
- FIG. The second control unit 12 compares the lateral movement amount X with the distance D from the current lateral position P of the vehicle 1 to the lane boundary line B1 to determine whether the vehicle 1 deviates from the driving lane L. determine whether or not
- the output device 105 instructs the driver to turn the steering of the own vehicle 1.
- Hands-on request information may be output requesting that the wheel 104a be gripped.
- the driving control device 100 may stop the driving support control including the lane keeping control and departure prevention control.
- the vehicle speed control unit 13 shown in FIG. 1 controls the vehicle speed V and acceleration/deceleration of the host vehicle 1 by controlling the braking device 106b and the driving device 106c.
- the first abnormality determination unit 14a determines whether or not an abnormality has occurred in the first control unit 11 (whether the first control unit 11 is out of order). Specifically, the first abnormality determination unit 14a determines whether or not the second control unit 12 starts departure prevention control while the first control unit 11 is performing lane keeping control. If the second control unit 12 starts the deviation prevention control while the lane keeping control is being executed, there is a high possibility that the lane keeping control is not functioning normally. 11 determines that an abnormality has occurred. In the present embodiment, "abnormality occurs" means failure of the control execution function.
- the first abnormality determination unit 14a determines that an abnormality has occurred in the first control unit 11 (the first control unit 11 has failed), that is, during execution of the lane keeping control, the second control unit 12 When starting the departure prevention control, the first control unit 11 ends the lane keeping control.
- the processor 10 outputs an alarm including hands-on request information to the output device 105 .
- the vehicle speed control unit 13 outputs control signals to the braking device 106b and the driving device 106c to start deceleration control of the host vehicle 1.
- the second control unit 12 continues the departure prevention control until the host vehicle 1 decelerated by the deceleration control stops, and terminates the departure prevention control when the host vehicle 1 stops. If the driver starts manual driving while the host vehicle 1 is decelerating, the vehicle speed control unit 13 ends the deceleration control before the host vehicle 1 stops.
- the second abnormality determination unit 14b constantly determines whether an abnormality has occurred in the second control unit 12 (whether the second control unit is out of order) even while the deviation prevention control is not being executed. are judging. That is, the second abnormality determination unit 14b determines whether or not an abnormality has occurred in the second control unit 12 before the second control unit 12 starts deviation prevention control. Further, when the second abnormality determination unit 14b determines that an abnormality has occurred in the second control unit 12, the processor 10 of the operation control device 100 performs driving support control including lane keeping control and departure prevention control. finish. The second abnormality determination unit 14b determines that an abnormality has occurred in the second control unit 12 when a system error in the second control unit 12 is detected.
- the second abnormality determination unit 14b determines whether the periodically calculated internal calculation result deviates from the reference value by a predetermined value or more. This predetermined value is appropriately set based on experimental results and the like according to the system used. While the second control unit 12 controls the own vehicle 1 so as not to deviate from the driving lane L, the first control unit 11 controls the vehicle 1 to move along the lane center route while the driving support control of the own vehicle 1 is being executed. , the number of internal calculations by the first control unit 11 increases. Therefore, the internal calculations of the first control unit 11 are more than the internal calculations of the second control unit 12, and the calculation results are integrated to output an output value. It is difficult to determine the divergence of the internal calculation results of 11. Further, even if the output value obtained by integrating many calculation results is constant, each internal calculation may differ, and the first abnormality determination unit 14a accurately determines the divergence of the internal calculation results of the first control unit 11. is difficult.
- the abnormality determination unit 14 determines that an abnormality has occurred in the first control unit 11 or the second control unit 12. In this case, the driving control device 100 may control the own vehicle 1 so as not to permit the driving assistance mode to transition to the hands-off mode.
- step S1 the second abnormality determination unit 14b determines whether or not the second control unit 12 has an abnormality. If there is an abnormality in the second control unit 12, the driving control device 100 ends the driving support control in step S8.
- step S2 the first abnormality determination unit 14a determines whether or not the second control unit 12 starts departure prevention control while the first control unit 11 is executing lane keeping control. If the second control unit 12 does not start departure prevention control while the first control unit 11 is executing lane keeping control, the process ends.
- step S2 when the first abnormality determination unit 14a determines that the second control unit 12 starts deviation prevention control while lane keeping control is being performed by the first control unit 11, the first abnormality determination is performed in step S3.
- the unit 14a determines that the first control unit 11 is abnormal. It should be noted that, in this determination, it is determined from external information that there is a crosswind stronger than a predetermined level, or from map information that there is a cant greater than a predetermined level on the road surface. If information is obtained on a point where it is difficult for the own vehicle 1 to travel in the lane, the determination of whether or not an abnormality has occurred in the first control unit 11 at that point may be suspended.
- step S4 the first control unit 11 terminates the lane keeping control.
- step S5 the vehicle speed control unit 13 starts deceleration control. Note that the processing of step S4 and the processing of step S5 may be performed at the same time, or the processing of step S4 may be performed after the processing of step S5.
- step S6 the operation control device 100 determines whether or not the vehicle 1 has stopped after deceleration.
- the operation control device 100 determines that the host vehicle 1 has not stopped, the operation control device 100 continues the determination in step S6 while continuing the deviation prevention control.
- the second control unit 12 ends the departure prevention control in step S7.
- the processor 10 of the operation control device 100 determines that the second control unit 12 starts departure prevention control while lane keeping control is being executed by the first control unit 11, Lane keeping control is ended, deceleration control of the own vehicle 1 is started, departure prevention control is continued until the own vehicle 1 is stopped by deceleration control, and departure prevention control being executed when the own vehicle is stopped by deceleration control. exit.
- the reason why the second control unit 12 starts departure prevention control while the first control unit 11 is executing lane keeping control is that the lane keeping control function of the first control unit 11 is not sufficiently exerted. , indicates that the vehicle 1 deviates from the driving lane L or may deviate.
- the operation control device 100 determines whether or not the second control unit 12 starts the deviation prevention control while the first control unit 11 is executing the lane keeping control. It is possible to determine a situation in which there is a possibility that a collision has occurred, and control the driving of the own vehicle according to the determination result.
- the second control unit 12 when starting departure prevention control while lane keeping control is being executed, that is, even when there is a possibility that an abnormality has occurred in the execution function of lane keeping control, the second control unit 12 The departure prevention control is continued until the vehicle 1 stops, and the departure prevention control ends when the own vehicle 1 stops.
- the operation control device 100 stops the own vehicle 1 while preventing the departure of the own vehicle 1 from the traveling lane L when an abnormality occurs in the function of executing the lane keeping control. Support control can be terminated.
- the processor 10 of the operation control device 100 determines that the second control unit 12 starts deviation prevention control while lane keeping control is being executed while controlling the operation of the own vehicle 1 in the hands-off mode. outputs hands-on request information requesting the driver to grip the steering wheel 104a of the own vehicle 1 .
- the driver starts manual driving by gripping the steering wheel 104a while the operation control device 100 continues the departure prevention control. be able to.
- the operation control device 100 can efficiently determine whether there is an abnormality (failure) in the first control unit 11 without using an abnormality determination device having a complicated configuration.
- the processor 10 of the operation control device 100 determines whether or not an abnormality has occurred in the second control unit 12 before the second control unit 12 starts deviation prevention control. ), and if there is an abnormality in the second control unit 12, the driving support control is terminated.
- the operation control device 100 can prevent in advance from being unable to accurately determine the presence or absence of an abnormality in the first control unit 11 due to the abnormality occurring in the second control unit 12 .
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Traffic Control Systems (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
図1は、自車両1及び自車両1の自律運転を制御する運転制御装置100の構成を示すブロック図である。自車両1は、運転制御装置100、検出装置101、自車両位置取得部102、地図データベース103、車載機器104、出力装置105、操舵装置106a、制動装置106b及び駆動装置106cを備える。運転制御装置100は、ROMに格納されたプログラムをCPUにより実行することで、自車両1の操舵装置106a、制動装置106b及び駆動装置106cを制御して、運転支援制御を実行する。
なお、以下の説明において、運転制御装置100は、ハンズオフモードで自車両1の運転を制御しているものとする。ハンズオフモードとは、ドライバが自車両1のステアリングから手を放した状態において運転制御装置100が自車両1の走行を許可するモードである。
なお、図1において、運転制御装置100は自車両1に搭載されているが、これに限定されず、運転制御装置100は、自車両1を遠隔で操作する装置であってもよい。
なお、第1制御部11が正常に機能している間も、第2制御部12の逸脱防止制御の機能はONの状態である。「第2制御部12が逸脱防止制御を開始する」とは、逸脱防止制御の機能に基づいて第2制御部12が車両制御部15への制御信号の出力を開始することをいう。「第2制御部12が逸脱防止制御を開始する」とは、逸脱防止制御の機能に基づいて第2制御部12が車両制御部15に継続して制御信号を出力することをいう。
まず、第2制御部12は、自車両1の操舵速度限界値δ’を取得する。
次に、第2制御部12は、現在の初期舵角δ(0)に、操舵速度限界値δ’を時間tで積分した舵角変化量(t)を加算して、時間t経過後の舵角δを示す以下の式(1)を作成する。
δ=δ(0)+δ(t) …(1)
θ=θ(0)+θ(t) …(2)
Vy(t)=V×sinθ(t) …(3)
そして、第2制御部12は、上記の式(3)で表されるVy(t)を最短時間T1で積分し、横移動量Xを算出する。第2制御部12は、この横移動量Xを、自車両1の現在の横方向位置Pから車線境界線B1までの距離Dと比較することにより、自車両1が走行車線Lを逸脱するか否かを判定する。
なお、本実施形態において、「異常が発生する」とは、制御を実行する機能が故障することをいう。
まず、ステップS1において、第2異常判定部14bは、第2制御部12に異常が発生しているか否かを判定する。第2制御部12に異常が発生している場合は、ステップS8において、運転制御装置100は運転支援制御を終了する。
さらに次に、ステップS5において、車速制御部13は減速制御を開始する。
なお、ステップS4の処理とステップS5の処理とは、同時に行われてもよく、ステップS5の処理の後にステップS4の処理が行われてもよい。
1…自車両
10…プロセッサ
11…第1制御部
12…第2制御部
14…異常判定部
15…車両制御部
104a…ステアリングホイール
L…走行車線
Claims (5)
- 走行車線内において自車両の横方向位置を所定の位置に維持する車線維持制御を実行する第1制御部と、前記走行車線からの前記自車両の逸脱を防止する逸脱防止制御を実行する第2制御部とを有するプロセッサを用いて前記自車両の運転支援制御を実行する運転制御方法であって、
前記プロセッサは、
前記第1制御部による前記車線維持制御の実行中に前記第2制御部が前記逸脱防止制御を開始するか否かを判定し、
前記車線維持制御の実行中に前記第2制御部が前記逸脱防止制御を開始すると判定した場合は、
実行中の前記車線維持制御を終了し、
前記自車両の減速制御を開始し、
前記減速制御により前記自車両が停止するまで前記逸脱防止制御を継続し、
前記減速制御により前記自車両が停止したときに実行中の前記逸脱防止制御を終了する、運転制御方法。 - 前記プロセッサは、
ハンズオフモードにより前記自車両の運転を制御しているときに、前記車線維持制御の実行中に前記第2制御部が前記逸脱防止制御を開始すると判定した場合は、ドライバに前記自車両のステアリングホイールを把持するように要求するハンズオン要求情報を出力する、請求項1に記載の運転制御方法。 - 前記プロセッサは、
前記車線維持制御の実行中に前記第2制御部が前記逸脱防止制御を開始すると判定した場合は、前記第1制御部に異常が発生していると判定する、請求項1又は2に記載の運転制御方法。 - 前記プロセッサは、
前記第2制御部が前記逸脱防止制御を開始する前に、前記第2制御部に異常が発生しているか否かを判定し、
前記第2制御部に異常が発生している場合は、前記運転支援制御を終了する、請求項1~3のいずれか一項に記載の運転制御方法。 - 自車両の運転支援制御を実行する運転制御装置であって、
走行車線内において自車両の横方向位置を所定の位置に維持する車線維持制御を実行する第1制御部と、前記走行車線からの前記自車両の逸脱を防止する逸脱防止制御を実行する第2制御部とを有する車両制御部と、
前記第1制御部による前記車線維持制御の実行中に前記第2制御部が前記逸脱防止制御を開始するか否かを判定する異常判定部とを備え、
前記異常判定部が、前記車線維持制御の実行中に前記第2制御部が前記逸脱防止制御を開始すると判定した場合は、
前記車両制御部は、
実行中の前記車線維持制御を終了し、
前記自車両の減速制御を開始し、
前記減速制御により前記自車両が停止するまで前記逸脱防止制御を継続し、
前記減速制御により前記自車両が停止したときに実行中の前記逸脱防止制御を終了する、運転制御装置。
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