WO2024128063A1 - 車両制御装置、車両制御方法、及び車両制御システム - Google Patents
車両制御装置、車両制御方法、及び車両制御システム Download PDFInfo
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- WO2024128063A1 WO2024128063A1 PCT/JP2023/043396 JP2023043396W WO2024128063A1 WO 2024128063 A1 WO2024128063 A1 WO 2024128063A1 JP 2023043396 W JP2023043396 W JP 2023043396W WO 2024128063 A1 WO2024128063 A1 WO 2024128063A1
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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
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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
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
-
- 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
-
- 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
- B60W10/20—Conjoint control of vehicle sub-units of different type or different function including control of steering 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
Definitions
- the present invention relates to a vehicle control device, a vehicle control method, and a vehicle control system that control a vehicle equipped with a steer-by-wire system.
- controlling the vehicle yaw moment alone may not be enough to achieve the desired turning performance, taking into account the effects of braking force, driving force (braking/driving force), and tire steering caused by alignment.
- the turning direction changes depending on the kingpin offset setting.
- the front wheel faces left, which is the opposite direction to the target turning direction, and the tire is steered in a direction that suppresses turning due to the braking force.
- the tire is steered in a direction that suppresses turning due to the braking force.
- the present invention was made in consideration of the above circumstances, and its purpose is to provide a vehicle control device, a vehicle control method, and a vehicle control system that can realize a turning function, including tire steering using braking and driving forces.
- a vehicle control device and a vehicle control method that are installed in a vehicle having a steer-by-wire system that steers left and right steerable wheels that are mechanically separated from a steering wheel, and in which the scrub radius of the steerable wheels is set to a negative value, and when a control unit provided in the vehicle control device acquires an abnormality signal of the steering function of the steer-by-wire system, outputs a first braking/driving command that makes the sum of the driving force and braking force applied to the steerable wheel on the outside of a turning wheel of the vehicle, of the left and right steerable wheels, smaller than the sum of the driving force and braking force applied to the steerable wheel on the inside of a turning wheel of the vehicle, when the driving force is a positive physical quantity and the braking force is a negative physical quantity in response to the steering operation input to the steering wheel.
- a vehicle control system includes the vehicle control device and a braking/driving actuator that applies braking/driving forces to the left and right steered wheels based on the first braking/driving command output from the control unit.
- this invention can provide a vehicle control device, vehicle control method, and vehicle control system that can achieve a turning function including tire steering using driving and braking forces.
- FIG. 1 is a configuration diagram of a vehicle control device and a vehicle control system according to a first embodiment of the present invention.
- 2 is a flowchart showing an outline of a vehicle control method in the vehicle control device and the vehicle control system shown in FIG. 1 .
- 1A and 1B are diagrams for explaining vehicle movement in response to braking/driving forces when turning; 4A and 4B are diagrams for explaining tire movement in response to braking/driving forces during cornering.
- 11A and 11B are diagrams for explaining vehicle movement under another control method using braking/driving forces.
- FIG. 11 is a diagram illustrating yet another control method using braking/driving forces, which illustrates the movement of the vehicle when the driving forces of the individual wheels can be controlled.
- FIG. 11 is a diagram illustrating yet another control method using braking/driving forces, which illustrates the movement of the vehicle when the driving forces of the individual wheels can be controlled.
- 11 is a flowchart for explaining a vehicle control device, a vehicle control method, and a vehicle control system according to a second embodiment of the present invention, and is an outline of a vehicle control method in the case where the steer-by-wire system controls the tire angle to assist steering when the steer-by-wire system is normal.
- 7 is a diagram for explaining the movement of the vehicle under control using braking/driving forces in the vehicle control method shown in FIG. 6 .
- a vehicle 10 includes a motor 72 that drives front wheels (tires) 11, 12, and a motor 73 that drives rear wheels (tires) 13, 14.
- the motors 72, 73 function as drive actuators, and drive the front wheels 11, 12 and the rear wheels 13, 14, respectively, in response to the amount of operation of an accelerator pedal 71 input to a powertrain control unit 33.
- the vehicle 10 is equipped with a steer-by-wire type steering mechanism (steer-by-wire system) in which the steering wheel 51 and the front wheels (steered wheels) 11, 12 are not physically connected but are mechanically separated from each other.
- this steering mechanism does not have a steering shaft.
- the steering angle is detected by the steering angle sensor 52, and a target tire angle and a target reaction force according to the conditions at the time of operation are calculated by the steering control unit 31.
- the target tire angle is then output from the steering control unit 31 to the wheel actuator 42, and the target reaction force is output to the reaction force actuator 41 in order to impart a steering reaction torque to the steering wheel 51, thereby performing steering control.
- the brake control unit 32 also performs braking using brake actuators 15, 16, 17, and 18 based on the amount of operation of the brake pedal 61 and the outputs of brake thrust sensors 21, 22, 23, and 24, which detect the thrust generated by the brakes.
- the steering control unit 31, brake control unit 32, and powertrain control unit 33 function as the control section 30 of the vehicle control device.
- the steering control unit 31 detects a system failure and, when it receives an abnormality signal for the steering function, the brake control unit 32 and powertrain control unit 33 control the braking force by the brakes and the driving force by the motors 72, 73 according to the steering operation input to the steering wheel 51.
- the brake control unit 32 selectively outputs a braking command to the brake actuators 15, 16, 17, and 18, and the powertrain control unit 33 selectively outputs a drive command to the motors 72 and 73, so that the sum of the driving force and braking force applied to the steered wheel on the outside of the turning wheel of the vehicle 10 is smaller than the sum of the driving force and braking force applied to the steered wheel on the inside of the turning wheel of the vehicle 10.
- Fig. 2 is a flow chart showing an outline of a vehicle control method in the vehicle control device shown in Fig. 1.
- the steering control unit 31 detects a malfunction of the SBW system (step S1). It is determined whether a malfunction that makes it impossible to steer the tires has occurred (step S2), and if a malfunction has occurred, a target yaw rate ( ⁇ * ) is calculated from the handle angle detected by the steering angle sensor 52 and the vehicle speed (V) (step S3).
- the brake control unit 32 and the powertrain control unit 33 detect the operation amount of the brake pedal 61 and the accelerator pedal 71, and the steering control unit 31 calculates a target longitudinal acceleration ( ⁇ x * ) (step S4).
- the target braking/driving forces ( Ffl , Ffr , Frl , Frr ) of each wheel are calculated from the target yaw rate ( ⁇ * ) and the target longitudinal acceleration ( ⁇ x * ) (step S5).
- the target braking forces of each wheel will be collectively referred to as " Fxx ".
- the target braking forces ( Tbxx ) to be generated by the brake actuators 15, 16, 17, 18 and the target driving torques ( Tmxx ) to be generated by the motors 72, 73 are calculated from the target braking/driving forces ( Fxx ) of each wheel.
- the brake control unit 32 drives the brake actuators 15, 16, 17, 18 in accordance with the target braking force ( Tbxx ), and the powertrain control unit 33 drives the motors 72, 73 in accordance with the target driving torque ( Tmxx ), and the process ends.
- step S2 if it is determined in step S2 that no malfunction has occurred, a target tire angle ( ⁇ ) is calculated from the handle angle detected by the steering angle sensor 52 (step S8). Thereafter, the wheel actuator 42 is driven from the target tire angle ( ⁇ ) and the process ends (step S9).
- 3A and 3B are diagrams for explaining the movement of the vehicle and tires in response to the braking/driving force during cornering.
- the movement is explained when the scrub radius ( ⁇ ) of the front wheels is negative (the kingpin axis KP is located outside the tire center).
- the moment (m BF2 ) around the kingpin axis when a braking force ( BF2 ) is generated is expressed by the following equation (1).
- the tire angular acceleration ( ⁇ ** ) is given by the following equation (3):
- the tire angle ( ⁇ ) is calculated from the second order integral of this equation (3).
- the lateral force (SF) is expressed by the following equation (4).
- the yaw moment (M C ) generated in the vehicle due to the braking forces (BF 1 , BF 2 ) and the lateral force (SF) is given by the following equation (5).
- turning of the vehicle 10 can be achieved by controlling the tire angle ( ⁇ ) at which the front wheels are steered by the braking force (BF 1 ) of the previous equation (1), the vehicle yaw moment (M ST ) generated from the lateral force (SF) generated by the tire angle ( ⁇ ), the yaw moment (M BF1 ) generated by the braking force (BF 1 ), and the vehicle yaw moment (M BF2 ) generated by the braking force (BF 2 ) of the rear wheels.
- the braking force (BF 2 ) of the rear wheels may be used to increase the amount of slip of the tire (right rear wheel 14) to reduce the lateral force of the tire (right rear wheel 14), thereby changing the balance of lateral forces with the front wheels to increase the yaw moment generated in the vehicle, thereby enabling turning.
- cornering can be achieved by using the side force generated by steering, by making the total value of the braking and driving forces smaller on the outer wheels than on the inner wheels.
- the front wheels generate a braking/driving force difference for steering the tires depending on the alignment characteristics
- the rear wheels generate a braking force difference for realizing the vehicle yaw moment since the influence of the alignment characteristics is relatively small. This not only enables the vehicle yaw moment to be generated using the braking/driving force difference in inter-functional redundancy when SBW fails, but also enables tire steering utilizing alignment characteristics, thereby realizing a turning function using the braking/driving force.
- the vehicle can be turned using the braking force difference generated on the front wheels and tire steering due to alignment, while the rear wheels can be turned by generating a vehicle yaw moment using the braking force difference between the left and right wheels, thereby achieving a turning function using tire steering due to braking force and vehicle yaw moment.
- FIG. 4 is a diagram for explaining the movement of the vehicle by another control method using the braking/driving force.
- the scrub radius of this vehicle 10 is also set to be negative.
- the front wheels 11, 12 In order to generate a moment around the kingpin axis with the driving forces TF2 , TF1 and the braking force BF2 , the front wheels 11, 12 generate torque by the motor 72 to drive the brake actuator 15 of the left front wheel 11, thereby generating a driving force difference. This causes the front wheels 11, 12 to turn in the turning direction, and the braking force BF1 of the right rear wheel 14 generates a vehicle yaw moment, thereby realizing the turning of the vehicle 10.
- braking/driving forces When braking/driving forces are used, they are distributed so as to achieve the target longitudinal acceleration ( ⁇ x * ). If the target longitudinal acceleration ( ⁇ x * ) cannot be achieved, the braking/driving forces of each wheel are distributed so that the longitudinal acceleration generated is on the deceleration side, for example, to achieve the required turning. Furthermore, when the force that can be generated at each wheel becomes saturated due to a change in load, etc., the braking/driving force is reallocated so that force is generated at another wheel. For example, in FIG 4, when the braking force BF1 that can be generated at the right rear wheel 14 becomes saturated, the braking/driving force is reallocated so that a driving force is generated at the left rear wheel 13. Furthermore, when wheel slip of a predetermined value or more is detected in each wheel, the braking/driving forces are redistributed so as not to increase the slip.
- FIG. 5 is a diagram for explaining the movement of a vehicle when the driving force of each wheel can be controlled, showing yet another control method using the braking and driving force.
- This example is applied to a so-called in-wheel motor vehicle 10 in which motors 81, 82, 83, and 84 are installed on each wheel.
- the scrub radius of this vehicle 10 is also set to be negative.
- the right front wheel 12 uses these motors 81 and 82, the right front wheel 12 generates a driving force TF 1 at the motor 82 to generate a moment around the kingpin axis, and the front wheels 11 and 12 are steered by generating a driving force difference.
- a vehicle yaw moment is generated by the braking force BF 1 of the brake actuator 18 of the right rear wheel 14 and the driving force of the motor 83 of the left rear wheel, thereby realizing the turning of the vehicle 10.
- FIG. 6 is a flowchart for explaining a vehicle control device, a vehicle control method, and a vehicle control system according to a second embodiment of the present invention, which is a schematic flow chart of the vehicle control method.
- the tire angle is controlled to assist steering.
- the steering control unit 31 calculates a target tire angle ( ⁇ * ) from the steering wheel angle detected by the steering angle sensor 52 (step S11).
- the tire angle deviation ( ⁇ e ) is calculated from the difference between the target tire angle ( ⁇ * ) and the tire angle ( ⁇ ) (step S12).
- the brake control unit 32 and the powertrain control unit 33 detect the operation amounts of the brake pedal 61 and the accelerator pedal 71, and the steering control unit 31 calculates a target longitudinal acceleration ( ⁇ x * ) (step S13). Then, the target braking/driving forces ( Ffl , Ffr , Frl , Frr ) of each wheel are calculated from the tire angle deviation ( ⁇ e ) and the target longitudinal acceleration ( ⁇ x * ) (step S14).
- the target braking forces of each wheel will be collectively referred to as " Fxx ".
- the target braking force (Tb xx ) to be generated by the brake actuators 15, 16, 17, 18 and the target driving torque (Tm xx ) to be generated by the motors 72, 73 are calculated from the target braking/driving force (F xx ) of each wheel (step S15).
- the brake control unit 32 drives the brake actuators 15, 16, 17, 18 in accordance with the target braking force ( Tbxx ), and the powertrain control unit 33 drives the motors 72, 73 in accordance with the target driving torque ( Tmxx ) (step S16). Then, the wheel actuator 42 is driven from the target tire angle ( ⁇ ) (step S17).
- This control method allows steering assistance to be achieved by controlling the tire angle. Furthermore, the steering assistance according to the second embodiment can be similarly applied to steering devices (EPS) that are not steer-by-wire (SBW) type, as long as the scrub radius of the steering wheel is negative.
- EPS steering devices
- SBW steer-by-wire
- Fig. 7 is a diagram for explaining the movement of the vehicle under control using the driving and braking forces in the vehicle control method shown in Fig. 6.
- the front wheels 11, 12, which are steered wheels, generate a moment around the kingpin axis with the driving forces TF2 , TF1 and the braking force BF2 , so that a torque is generated by the motor 72 and the brake actuator 15 of the left front wheel 11 is driven, thereby generating a driving force difference to assist the steering of the front wheels 11, 12.
- braking/driving forces When braking/driving forces are used, they are distributed so as to achieve the target longitudinal acceleration ( ⁇ x * ). If the target longitudinal acceleration ( ⁇ x * ) cannot be achieved, the steering of the tires is assisted by a braking/driving force difference up to the target longitudinal acceleration ( ⁇ x * ), for example.
- the front wheels are turned using the braking force difference generated by the alignment and tire steering, while the rear wheels are turned by generating a vehicle yaw moment using the left and right braking force difference. Therefore, if the tire steering function of the SBW fails, it is possible to realize the turning required by the system using braking and driving forces regardless of the vehicle alignment. Furthermore, by realizing the turning function using braking and driving forces regardless of the alignment characteristics, redundancy of the SBW can be reduced and costs can be reduced. As a result, a vehicle control device, vehicle control method, and vehicle control system can be obtained that can realize a turning function using tire steering using braking forces and vehicle yaw moment.
- the target longitudinal acceleration is calculated by the steering control unit 31, but it may be configured so that the calculation is performed by another control unit within the control section 30.
- the calculations performed by each of the control units 31, 32, and 33 within the control section 30 may be performed by another control unit, and a dedicated control unit may be provided to realize the turning function in the event that the steering function fails.
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Abstract
Description
図1は、本発明の実施形態に係る車両制御装置及び車両制御システムの構成図である。車両10は、前輪(タイヤ)11,12を駆動するモータ72と、後輪(タイヤ)13,14を駆動するモータ73を備えている。モータ72,73は、駆動アクチュエータとして働くもので、パワートレインコントロールユニット33に入力されたアクセルペダル71の操作量に応じて、前輪11,12と後輪13,14をそれぞれ駆動する。
ドライバがステアリングホイール51を操作すると、その操舵角をステアリング舵角センサ52が検出し、操作時の条件に応じた目標タイヤ角と目標反力をステアリングコントロールユニット31で求める。そして、ステアリングコントロールユニット31から目標タイヤ角をホイールアクチュエータ42に出力し、ステアリングホイール51に操舵反力トルクを付与するために目標反力を反力アクチュエータ41に出力して転舵制御を行う。
次のステップS6では、各輪の目標制駆動力(Fxx)から、ブレーキアクチュエータ15,16,17,18で発生させる目標制動力(Tbxx)と、モータ72,73で発生させる目標駆動トルク(Tmxx)を算出する。
次のステップS7では、目標制動力(Tbxx)に従いブレーキコントロールユニット32でブレーキアクチュエータ15,16,17,18を駆動させ、目標駆動トルク(Tmxx)に従いパワートレインコントロールユニット33でモータ72,73を駆動させて終了する。
その後、目標タイヤ角(σ)からホイールアクチュエータ42を駆動して終了する(ステップS9)。
また、旋回中に後輪の制動力(BF2)でタイヤ(右後輪14)のスリップ量を大きくすることでタイヤ(右後輪14)の横力を小さくし、前輪との横力のバランスを変化させることで車両に発生するヨーモーメントを大きくして旋回を実施してもよい。
スクラブ半径が設定された車輪は、制動によりタイヤを転舵する方向にモーメントが発生する。特にスクラブ半径がネガティブに設定された車輪では、制動力により発生させた車両ヨーモーメントを打ち消す方向にタイヤが転舵する(タイヤ転舵によりサイドフォースが発生し、車両ヨーモーメントを発生させる)。特に、この転舵による車両ヨーモーメントの影響が大きい車両では、想定する旋回方向と逆方向の旋回となる可能性がある。
このような特性のような車両では、制駆動力の合計値を内輪より外輪を小さくすることで、転舵によるサイドフォースを使用して旋回を実現できる。
これによって、SBW失陥時の機能間冗長で制駆動力差を用いて車両ヨーモーメントを発生させるだけでなく、アライメント特性を利用したタイヤ転舵を実現し制駆動力による旋回機能を実現できる。
更に、荷重変化等で各輪の発生可能な力が飽和する場合は、他の輪で力を発生するように制駆動力を再配分する。例えば、図4では右後輪14で発生可能な制動力BF1が飽和した場合、左後輪13に駆動力を発生させるように制駆動力を配分する。
更にまた、各輪で所定値以上の車輪スリップを検知した場合は、スリップを助長しないように制駆動力を再配分する。
まず、ステアリングコントロールユニット31により、ステアリング舵角センサ52で検出したハンドル角から目標タイヤ角(σ*)を算出する(ステップS11)。
次に、目標タイヤ角(σ*)とタイヤ角(σ)の差からタイヤ角偏差(σe)を算出する(ステップS12)。
その後、タイヤ角偏差(σe)と目標前後加速度(αx *)から各輪の目標制駆動力(Ffl,Ffr,Frl,Frr)を算出する(ステップS14)。なお、以後は、特に指定しない限り各輪の目標制動力をまとめて「Fxx」と表記する。
引き続き、各輪の目標制駆動力(Fxx)から、ブレーキアクチュエータ15,16,17,18で発生させる目標制動力(Tbxx)と、モータ72,73で発生させる目標駆動トルク(Tmxx)を算出する(ステップS15)。
そして、目標タイヤ角(σ)からホイールアクチュエータ42を駆動する(ステップS17)。
そして、制駆動力を使用する場合は、目標前後加速度(αx *)を達成するように制駆動力を配分する。また、目標前後加速度(αx *)が達成できない場合は、例えば目標前後加速度(αx *)相当までの制駆動力差でタイヤの転舵を補助する。
Claims (13)
- ステアリングホイールと機械的に切り離された左右の転舵輪を転舵させるステアバイワイヤシステムを有し、前記転舵輪におけるスクラブ半径がネガティブに設定された車両に設けられた車両制御装置であって、
前記車両制御装置が備えるコントロール部は、
前記ステアバイワイヤシステムにおける転舵機能の異常信号を取得した際、
前記ステアリングホイールに入力されるステアリング操作に応じて、
駆動力を正の物理量、制動力を負の物理量としたとき、前記左右の転舵輪のうち、前記車両の旋回外側の転舵輪に与える駆動力と制動力の合計値を、前記車両の旋回内側の転舵輪に与える駆動力と制動力の合計値より小さくする第1の制駆動指令を出力する、
車両制御装置。 - 請求項1に記載の車両制御装置であって、
前記転舵輪は前輪である、
車両制御装置。 - 請求項2に記載の車両制御装置であって、
前記コントロール部は、
前記ステアリングホイールに入力されるステアリング操作に応じて、
駆動力を正の物理量、制動力を負の物理量としたとき、左右の後輪のうち、前記車両の旋回内側の後輪に与える駆動力と制動力の合計値を、前記車両の旋回外側の後輪に与える駆動力と制動力の合計値より小さくする第2の制駆動指令を出力する、
車両制御装置。 - 請求項3に記載の車両制御装置であって、
前記コントロール部は、
前記ステアリングホイールに入力されるステアリング操作に応じて、
前記左右の後輪のうち、前記車両の旋回内側の後輪のスリップ量を大きくするスリップ制御指令を出力する、
車両制御装置。 - 請求項2に記載の車両制御装置であって、
前記第1の制駆動指令は、前記車両の旋回外側の前輪に制動力を与える指令である、
車両制御装置。 - 請求項2に記載の車両制御装置であって、
前記第1の制駆動指令は、前記車両の旋回内側の前輪に駆動力を与える指令である、
車両制御装置。 - 請求項2に記載の車両制御装置であって、
前記第1の制駆動指令は、前記車両の旋回外側の前輪に駆動力及び制動力を与え、前記車両の旋回内側の前輪に駆動力を与える指令である、
車両制御装置。 - 請求項3に記載の車両制御装置であって、
前記第1の制駆動指令は、前記車両の旋回外側の前輪に制動力を与える指令であり、
前記第2の制駆動指令は、前記車両の旋回外側の後輪に駆動力を与え、前記車両の旋回内側の後輪に制動力を与える指令である、
車両制御装置。 - 請求項3に記載の車両制御装置であって、
前記第1の制駆動指令は、前記車両の旋回内側の前輪に駆動力を与える指令であり、
前記第2の制駆動指令は、前記車両の旋回外側の後輪に駆動力を与え、前記車両の旋回内側の後輪に制動力を与える指令である、
車両制御装置。 - 請求項3に記載の車両制御装置であって、
前記第1の制駆動指令は、前記車両の旋回外側の前輪に駆動力及び制動力を与え、前記車両の旋回内側の前輪に駆動力を与える指令であり、
前記第2の制駆動指令は、前記車両の旋回外側の後輪に駆動力を与え、前記車両の旋回内側の後輪に制動力を与える指令である、
車両制御装置。 - ステアリングホイールと機械的に切り離された左右の転舵輪を転舵させるステアバイワイヤシステムを有し、前記転舵輪におけるスクラブ半径がネガティブに設定された車両に設けられたコントロール部が実行する車両制御方法であって、
前記コントロール部が、
前記ステアバイワイヤシステムにおける転舵機能の異常信号を取得した際、
前記ステアリングホイールに入力されるステアリング操作に応じて、
駆動力を正の物理量、制動力を負の物理量としたとき、前記左右の転舵輪のうち、前記車両の旋回外側の転舵輪に与える駆動力と制動力の合計値を、前記車両の旋回内側の転舵輪に与える駆動力と制動力の合計値より小さくする第1の制駆動指令を出力する、
車両制御方法。 - ステアリングホイールと機械的に切り離された左右の転舵輪を転舵させるステアバイワイヤシステムと、
前記転舵輪におけるスクラブ半径がネガティブに設定された車両に設けられたコントロール部であって、
前記ステアバイワイヤシステムにおける転舵機能の異常信号を取得した際、
前記ステアリングホイールに入力されるステアリング操作に応じて、
駆動力を正の物理量、制動力を負の物理量としたとき、前記左右の転舵輪のうち、前記車両の旋回外側の転舵輪に与える駆動力と制動力の合計値を、前記車両の旋回内側の転舵輪に与える駆動力と制動力の合計値より小さくする第1の制駆動指令を出力する、
コントロール部と、
前記第1の制駆動指令に基づいて前記左右の転舵輪に制駆動力を与える制駆動アクチュエータと、
を備える車両制御システム。 - ステアリングホイールと機械的に切り離された左右の転舵輪を転舵させるステアバイワイヤシステムを有する車両制御装置であって、
前記車両制御装置が備えるコントロール部は、
前記ステアリングホイールに入力されるステアリング操作に応じて、
駆動力を正の物理量、制動力を負の物理量としたとき、前記左右の転舵輪のうち車両の旋回外側の転舵輪に与える駆動力と制動力の合計値と、前記左右の転舵輪のうち前記車両の旋回内側の転舵輪に与える駆動力と制動力の合計値と、のうち、一方を他方より大きくする制駆動指令を前記転舵輪におけるスクラブ半径の設定に基づいて求め、
求められた前記制駆動指令を出力する、
車両制御装置。
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| JP2024564301A JPWO2024128063A1 (ja) | 2022-12-12 | 2023-12-05 | |
| CN202380065071.7A CN119866293A (zh) | 2022-12-12 | 2023-12-05 | 车辆控制装置、车辆控制方法以及车辆控制系统 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000190863A (ja) * | 1998-12-25 | 2000-07-11 | Toyota Motor Corp | 車両の操舵制御装置 |
| US20030221894A1 (en) * | 2002-05-30 | 2003-12-04 | Jurgen Guldner | Back-drivable steer-by-wire system with positive scrub radius |
| JP2005263182A (ja) * | 2004-03-22 | 2005-09-29 | Hitachi Ltd | 車両制御装置 |
| JP2007230527A (ja) * | 2006-03-03 | 2007-09-13 | Nissan Motor Co Ltd | ステアリング装置、自動車、及びステアリング制御方法 |
| WO2012001786A1 (ja) * | 2010-06-30 | 2012-01-05 | トヨタ自動車株式会社 | 車両の制御装置 |
| JP2021503402A (ja) * | 2017-10-10 | 2021-02-12 | ボルボトラックコーポレーション | 車両のステアリングシステムを制御する方法 |
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- 2023-12-05 JP JP2024564301A patent/JPWO2024128063A1/ja active Pending
- 2023-12-05 CN CN202380065071.7A patent/CN119866293A/zh active Pending
- 2023-12-05 DE DE112023005155.0T patent/DE112023005155T5/de active Pending
- 2023-12-05 WO PCT/JP2023/043396 patent/WO2024128063A1/ja not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000190863A (ja) * | 1998-12-25 | 2000-07-11 | Toyota Motor Corp | 車両の操舵制御装置 |
| US20030221894A1 (en) * | 2002-05-30 | 2003-12-04 | Jurgen Guldner | Back-drivable steer-by-wire system with positive scrub radius |
| JP2005263182A (ja) * | 2004-03-22 | 2005-09-29 | Hitachi Ltd | 車両制御装置 |
| JP2007230527A (ja) * | 2006-03-03 | 2007-09-13 | Nissan Motor Co Ltd | ステアリング装置、自動車、及びステアリング制御方法 |
| WO2012001786A1 (ja) * | 2010-06-30 | 2012-01-05 | トヨタ自動車株式会社 | 車両の制御装置 |
| JP2021503402A (ja) * | 2017-10-10 | 2021-02-12 | ボルボトラックコーポレーション | 車両のステアリングシステムを制御する方法 |
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| DE112023005155T5 (de) | 2026-02-12 |
| JPWO2024128063A1 (ja) | 2024-06-20 |
| CN119866293A (zh) | 2025-04-22 |
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