KR102388275B1 - In-wheel system with autonomous emergency braking utility and control method thereof - Google Patents

Abstract

Disclosed are an in-wheel system having an automatic emergency braking function and a control method thereof. An in-wheel system having an automatic emergency braking function of the present invention includes: a braking pressure sensing unit for sensing a braking pressure for operating a brake; an in-wheel speed sensing unit for sensing the rotational speed of the in-wheel motor; an in-wheel torque sensing unit for detecting the torque of the in-wheel motor; an in-wheel motor driving unit for driving the in-wheel motor; and an emergency braking signal from a peripheral device or a braking pressure, rotational speed, and torque from the braking pressure sensing unit, the in-wheel speed sensing unit, and the in-wheel torque sensing unit, respectively, to determine the emergency braking state, and then to the in-wheel motor through the in-wheel motor driving unit It is characterized in that it comprises an in-wheel control unit that performs emergency braking by outputting the maximum reverse torque value, determines the failure state of the in-wheel motor based on the battery state and the driving state of the in-wheel motor, and drives the in-wheel motor normally if normal.

Description

IN-WHEEL SYSTEM WITH AUTONOMOUS EMERGENCY BRAKING UTILITY AND CONTROL METHOD THEREOF

The present invention relates to an in-wheel system having an automatic emergency braking function and a control method thereof, and more particularly, by applying a maximum reverse torque output value to an in-wheel motor during emergency braking by AEB logic or in-wheel logic in a vehicle equipped with an in-wheel system. The present invention relates to an in-wheel system having an automatic emergency braking function for rapidly decelerating a vehicle by increasing a total deceleration amount of the vehicle, and a control method therefor.

In general, an automatic emergency braking system (AEBS) is a system capable of minimizing damage caused by a collision by performing an alarm and automatic braking function when a collision with a vehicle located in front of a control vehicle is visualized.

Here, the AEBS monitors the relative distance to the vehicle in front and the presence or absence of a preceding vehicle to determine when AEB control is to be entered or released. As forward vehicle monitoring sensors currently in use, radar, lidar, and camera are used.

At this time, the sensor module for monitoring the vehicle in front is mounted on the upper part of the windshield in the case of a camera/lidar, and on the upper and lower grill portions of the vehicle in the case of a radar.

In addition, in recent years, electric vehicles driven by motors, fuel cell vehicles, hybrid vehicles, etc. have been developed according to the severity of environmental problems caused by the use of fossil fuels such as gasoline and diesel and the depletion of limited resources.

The in-wheel system is a system in which an in-wheel motor is mounted inside the wheel of each wheel of the vehicle so that each wheel can be controlled independently.

In addition, since each wheel can be controlled by independent driving, torque can be adjusted for each wheel, so that the vehicle's behavioral performance can be improved.

The background technology of the present invention is disclosed in Republic of Korea Patent Publication No. 10-1526622 (announced on June 8, 2015, a method for preventing engine stop when an automatic emergency braking device operates).

In the case of a subject that has already been recognized through the sensor in the automatic emergency braking system as above, if the subject comes close to the subject regardless of the driver's will to accelerate, it will automatically decelerate to prevent a major collision in advance. For example, when a bicycle, child, etc.) appears suddenly, there is a problem in that a major collision can be prevented only by emergency braking with great responsiveness.

In addition, in a collision situation caused by a subject that the sensor cannot detect (eg, a bird, flying object, etc.), rapid deceleration must be performed only with the driver's will to brake. There is no problem.

The present invention has been devised to improve the above problems, and an object of the present invention according to one aspect is to apply the maximum reverse torque output value to the in-wheel motor during emergency braking by AEB logic or in-wheel logic in a vehicle equipped with an in-wheel system An in-wheel system with an automatic emergency braking function that enables safe operation by rapidly decelerating the vehicle by increasing the total deceleration amount of the vehicle and then diagnosing the failure of the in-wheel motor to determine the failure of the in-wheel motor due to over-output and turning it off and to provide a method for controlling the same.

According to an aspect of the present invention, there is provided an in-wheel system having an automatic emergency braking function, comprising: a braking pressure sensing unit for sensing a braking pressure for operating a brake; an in-wheel speed sensing unit for sensing the rotational speed of the in-wheel motor; an in-wheel torque sensing unit for detecting the torque of the in-wheel motor; an in-wheel motor driving unit for driving the in-wheel motor; and an emergency braking signal from a peripheral device or a braking pressure, rotational speed, and torque from the braking pressure sensing unit, the in-wheel speed sensing unit, and the in-wheel torque sensing unit, respectively, to determine the emergency braking state, and then to the in-wheel motor through the in-wheel motor driving unit The in-wheel control unit performs emergency braking by outputting the maximum reverse torque value, determines the failure state of the in-wheel motor based on the battery state and the driving state of the in-wheel motor, and drives the in-wheel motor normally when it is normal; , an emergency braking determination unit that receives an emergency braking signal from a peripheral device or receives braking pressure, rotational speed, and torque from the braking pressure sensing unit, the in-wheel speed sensing unit, and the in-wheel torque sensing unit, respectively, to determine the emergency braking state of the vehicle; The emergency braking determination unit determines the emergency braking state when any one of a case in which the braking pressure is equal to or greater than the set pressure, the rotation speed is reduced, and the torque is reverse torque, or an emergency braking signal is input, After emergency braking, the in-wheel control unit determines the failure state of the in-wheel motor based on the first failure diagnosis condition. The fault condition is determined based on the second fault diagnosis condition in the normal driving condition, and if it is normal, the in-wheel motor is operated normally. characterized by maintaining it.

In the present invention, the peripheral device is characterized in that it includes an Autonomous Emergency Braking (AEB) device.

In the present invention, the in-wheel control unit receives the vehicle speed from the vehicle speed sensing unit after emergency braking and determines the failure state when the vehicle speed is decelerated to less than a set speed.

In the present invention, the in-wheel control unit receives an inverter fault code and a battery fault code from the in-wheel motor driving unit and the battery management device, respectively, and receives the rotation speed and temperature from the in-wheel speed sensing unit and the in-wheel temperature sensing unit, respectively, to diagnose the failure of the in-wheel motor. It characterized in that it further comprises;

According to another aspect of the present invention, there is provided a control method of an in-wheel system having an automatic emergency braking function, comprising: determining, by an in-wheel controller, an emergency braking state of a vehicle; performing emergency braking by outputting a maximum reverse torque to the in-wheel motor through the in-wheel motor driving unit when the in-wheel controller determines the emergency braking state and is in the emergency braking state; determining, by the in-wheel controller, a failure state of the in-wheel motor based on a first failure diagnosis condition after emergency braking; and when the in-wheel controller determines the failure state of the in-wheel motor, stopping the driving of the in-wheel motor if the failure state is found, and normally driving the in-wheel motor if the in-wheel motor is normal. receiving an emergency braking signal from a peripheral device; receiving, by the in-wheel control unit, braking pressure, rotational speed, and torque from the braking pressure sensing unit, the in-wheel speed sensing unit, and the in-wheel torque sensing unit, respectively; and determining, by the in-wheel control unit, as an emergency braking state when any of the cases in which the braking pressure is equal to or greater than the set pressure, the rotation speed is reduced, and the torque is reversed, or when an emergency braking signal is input, is satisfied; and , when the in-wheel controller receives the vehicle speed from the vehicle speed detection unit after emergency braking and the vehicle speed is decelerated to less than a set speed, determining a failure state of the in-wheel motor based on a first failure diagnosis condition; and when the set time elapses after the in-wheel control unit stops the driving of the in-wheel motor, determining the failure state of the in-wheel motor based on a second failure diagnosis condition in a normal driving condition wider than the first failure diagnosis condition; The method may further include: if the failure state of the in-wheel motor is determined as a result of determining the failure state, maintaining the driving stop state of the in-wheel motor, and normally driving the in-wheel motor if normal.

In the present invention, the peripheral device is characterized in that it includes an Autonomous Emergency Braking (AEB) device.

In the present invention, the step of determining the fault state of the in-wheel motor includes the in-wheel control unit receiving an inverter fault code and a battery fault code from the in-wheel motor driving unit and the battery management device, respectively, and receiving the rotation speed and the rotation speed from the in-wheel speed sensing unit and the in-wheel temperature sensing unit It is characterized in that it receives the temperature and determines the failure state of the in-wheel motor.

An in-wheel system having an automatic emergency braking function and a control method thereof according to an aspect of the present invention apply a maximum reverse torque output value to an in-wheel motor during emergency braking by AEB logic or in-wheel logic in a vehicle equipped with an in-wheel system, thereby increasing the total output of the vehicle. By increasing the deceleration amount, the braking distance during emergency braking of the vehicle can be reduced, and energy efficiency can be improved by regeneration due to reverse torque.

In addition, by diagnosing the failure of the in-wheel motor after rapid deceleration, the failure of the in-wheel motor due to over-output is determined and turned off, so that safe operation can be achieved.

1 is a block diagram illustrating an in-wheel system having an automatic emergency braking function according to an embodiment of the present invention.
2 is a flowchart illustrating a control method of an in-wheel system having an automatic emergency braking function according to an embodiment of the present invention.

Hereinafter, an in-wheel system having an automatic emergency braking function and a control method thereof according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a block diagram illustrating an in-wheel system having an automatic emergency braking function according to an embodiment of the present invention.

1, the in-wheel system having an automatic emergency braking function according to an embodiment of the present invention includes a braking pressure sensing unit 20, an in-wheel speed sensing unit 30, an in-wheel torque sensing unit 40, and an in-wheel It includes a motor driving unit 90 and an in-wheel control unit 80 .

The braking pressure sensing unit 20 senses the braking pressure at which the driver operates the brake in order to determine the driver's emergency braking intention, and provides it to the in-wheel control unit 80 .

The in-wheel speed sensing unit 30 detects the rotational speed of the in-wheel motor 100 and provides it to the in-wheel control unit 80 so that it can be determined whether the brake is operated and decelerated based on the acceleration obtained by differentiating the rotational speed. It is also possible to determine whether there is a malfunction.

The in-wheel torque sensing unit 40 detects the torque of the in-wheel motor 100 and provides it to the in-wheel control unit 80 to determine whether it is a deceleration state, that is, a braking state.

The in-wheel motor driving unit 90 not only drives the in-wheel motor 100 through the inverter, but also determines the driving state of the in-wheel motor 100 and provides an inverter fault code.

Here, the inverter fault code may include an overcurrent state, a disconnection state, a resolver failure state, and a communication abnormal state of each phase of the in-wheel motor 100 .

The in-wheel control unit 80 receives an emergency braking signal from a peripheral device or receives braking pressure, rotation speed, and torque from the braking pressure sensing unit 20, the in-wheel speed sensing unit 30, and the in-wheel torque sensing unit 40, respectively. It determines the emergency braking state and outputs the maximum reverse torque to the in-wheel motor 100 through the in-wheel motor driving unit 80 to perform emergency braking, and based on the battery state and the driving state of the in-wheel motor 100, the in-wheel motor ( 100) is determined, and if it is normal, the in-wheel motor 100 is normally driven.

In this embodiment, in order to determine the emergency braking state, the in-wheel control unit 80 receives an emergency braking signal from the AEB device 10, which is a peripheral device, to determine the emergency braking state, as well as to determine the emergency braking state by the in-wheel system itself. If it is determined that any one of them is in an emergency braking state, emergency braking may be performed.

Here, the in-wheel control unit 80 may include an emergency braking determination unit 82 and a failure diagnosis unit 84 .

The emergency braking determining unit 82 receives an emergency braking signal from the AEB device 10 or receives a braking pressure and rotational speed from the braking pressure sensing unit 20 , the in-wheel speed sensing unit 30 , and the in-wheel torque sensing unit 40 , respectively. and torque may be input to determine the emergency braking state of the vehicle.

Here, in order to determine the emergency braking state, the emergency braking determination unit 82 is configured to, when the braking pressure exceeds about 5 bar, the differential acceleration has a (-) value with respect to the rotation speed, and the torque is reverse torque, It can be judged that the brake was applied with the will to brake.

Therefore, the emergency braking determination unit 82 may determine the emergency braking state when the emergency braking state is satisfied in any one of the emergency braking state caused by the driver's emergency braking and the case where the emergency braking signal is input from the AEB device 10 . .

Here, the AEB device 10 may detect the presence of a preceding vehicle through a sensor such as a radar, a lidar, a camera, and the like, and output an emergency braking signal when it approaches the vehicle based on the relative distance to the vehicle in front.

The fault diagnosis unit 84 receives an inverter fault code and a battery fault code from the in-wheel motor driving unit 80 and the battery management device 60, respectively, and rotates from the in-wheel speed sensing unit 30 and the in-wheel temperature sensing unit 70, respectively. A failure of the in-wheel motor 100 is diagnosed by inputting the speed and temperature.

In this case, the fault code input from the battery management device 60 includes overcharge and overdischarge states of the battery (not shown).

Therefore, the fault diagnosis unit 84 determines whether the temperature of the in-wheel motor 100 is overheated above a set temperature, whether there is an abnormality in the rotation speed input from the in-wheel speed detection unit 30, whether the battery is normal, and whether the inverter is normal. cognition can be judged.

Here, the fault diagnosis of the in-wheel motor 100 is performed when the in-wheel control unit 80 performs emergency braking and then receives the vehicle speed from the vehicle speed detection unit 50 and sets the vehicle speed to less than the set speed, for example, less than about 5 km/h. In case of deceleration, a fault condition can be determined.

In this case, the in-wheel control unit 80 may apply a failure diagnosis condition in a normal driving state and a failure diagnosis condition after emergency braking when determining the failure state of the in-wheel motor 100 differently. That is, since the maximum value of reverse torque is applied to the in-wheel motor 100 for emergency braking to be excessively driven, the fault condition is set narrower than the fault diagnosis condition of the normal driving condition to determine the fault condition. When this occurs, the drive may be stopped to secure a time for recovery.

Accordingly, the in-wheel control unit 80 determines the failure state of the in-wheel motor 100 based on the first failure diagnosis condition after performing emergency braking. When this elapses, the fault condition is determined based on the second fault diagnosis condition, which is a fault diagnosis condition in a normal driving state that is wider than the first fault diagnosis condition, and when the condition is normal, the in-wheel motor 100 can be driven normally.

At this time, if the fault condition is determined based on the second fault diagnosis condition, the in-wheel control unit 80 maintains the driving stop state of the in-wheel motor 100, turns off the engine, and then returns to the fault condition in the initialized state when starting a new engine. can judge

As described above, according to the in-wheel system having an automatic emergency braking function according to an embodiment of the present invention, the maximum reverse torque output value is applied to the in-wheel motor during emergency braking by AEB logic or in-wheel logic in a vehicle equipped with the in-wheel system. By increasing the total deceleration amount of the vehicle, the braking distance can be reduced during emergency braking of the vehicle, and energy efficiency can be improved by regeneration due to reverse torque. It determines the failure of the motor and turns it off so that safe operation can be achieved.

2 is a flowchart illustrating a control method of an in-wheel system having an automatic emergency braking function according to an embodiment of the present invention.

As shown in FIG. 2 , in the control method of an in-wheel system having an automatic emergency braking function according to an embodiment of the present invention, first, the in-wheel controller 80 determines the emergency braking state of the vehicle.

To this end, the in-wheel control unit 80 receives an emergency braking signal from a peripheral device (S10).

Here, the peripheral device may include the AEB device 10 , and the AEB device 10 detects the presence or absence of a preceding vehicle through a sensor such as a radar, lidar, or camera, and approaches the vehicle based on the relative distance to the vehicle in front. When this happens, an emergency braking signal can be output.

Also, the in-wheel control unit 80 receives braking pressure, rotational speed, and torque from the braking pressure sensing unit 20 , the in-wheel speed sensing unit 30 , and the in-wheel torque sensing unit 40 , respectively ( S12 ).

From steps S10 and S12, the in-wheel control unit 80 receives an emergency braking signal from the AEB device 10, and receives the braking pressure sensing unit 20, the in-wheel speed sensing unit 30, and the in-wheel torque sensing unit 40, respectively. The emergency braking state of the vehicle is determined by receiving the braking pressure, rotation speed, and torque (S14).

Here, when the braking pressure exceeds about 5 bar, the differential acceleration has a (-) value with respect to the rotation speed, and the torque is the reverse torque, it is determined that the driver has applied the brake with an urgent will to brake. can do.

Accordingly, the in-wheel control unit 80 may determine the emergency braking state when the emergency braking state is satisfied in any one of the emergency braking state by the driver's emergency braking and the case in which the emergency braking signal is input from the AEB device 10 .

In step S14, the in-wheel control unit 80 determines the emergency braking state and, if not in the emergency braking state, normally drives the in-wheel motor 100 (S30).

On the other hand, if it is an emergency defrost state after determining the emergency braking state in step S14, the in-wheel control unit 80 outputs the maximum reverse torque to the in-wheel motor 100 through the in-wheel motor driving unit 90 to perform emergency braking (S16) ).

As described above, while performing emergency braking through the AEB device 10 in the emergency braking situation, the in-wheel system also outputs the maximum reverse torque to the in-wheel motor 100 to perform emergency braking, resulting in a large deceleration effect and quick response. can make it

After emergency braking is performed in step S16, the in-wheel control unit 80 receives the vehicle speed from the vehicle speed detection unit 50 and determines whether the vehicle speed is decelerated to less than a set speed, for example, less than about 5 km/h (S18) .

If the vehicle speed is not decelerated below the set speed in step S18, the in-wheel control unit 80 continuously performs emergency braking. However, when the vehicle speed is decelerated below the set speed, the failure state of the in-wheel motor 100 is determined as the first diagnosis condition. Diagnosis is based on (S20).

Here, the in-wheel control unit 80 may diagnose a failure under the first failure diagnosis condition set narrower than the second failure diagnosis condition, which is a failure diagnosis condition in a normal driving state of the in-wheel motor 100 .

That is, when determining the failure state of the in-wheel motor 100 , the in-wheel control unit 80 may apply a failure diagnosis condition in a normal driving state and a failure diagnosis condition after emergency braking is performed differently. Since this is a state in which the maximum reverse torque is applied to the in-wheel motor 100 for emergency braking and excessively driven. In the event of an occurrence, the drive may be stopped to secure time for recovery.

At this time, the in-wheel control unit 80 determines whether the temperature of the in-wheel motor 100 is overheated above a set temperature, whether there is an abnormality in the rotation speed input from the in-wheel speed detection unit 30, whether the battery is in a normal state, or whether the inverter is normal. can be determined according to the first fault diagnosis condition.

After diagnosing the failure of the in-wheel motor 100 based on the first failure diagnosis condition in step S20, it is determined whether the in-wheel motor 100 is defective (S22).

If it is determined in step S22 whether the in-wheel motor 100 is faulty and the in-wheel motor 100 is not faulty, the in-wheel control unit 80 ends emergency braking and drives the in-wheel motor 100 normally (S30).

However, in step S22, it is determined whether the in-wheel motor 100 is faulty, and if the in-wheel motor 100 is faulty, the in-wheel control unit 80 stops the driving of the in-wheel motor 100 so that only coasting is performed (S24). .

After stopping the driving of the in-wheel motor 100 in step S24, when the set time elapses, the in-wheel control unit 80 based on the second fault diagnosis condition, which is a fault diagnosis condition in a normal driving state wider than the first fault diagnosis condition, A failure of the motor 100 is diagnosed (S26).

After diagnosing the failure of the in-wheel motor 100 based on the second failure diagnosis condition in step S26, it is determined whether the in-wheel motor 100 is defective (S28).

In step S28 , it is determined whether the in-wheel motor 100 is faulty, and if the in-wheel motor 100 is not faulty, the in-wheel controller 80 normally drives the in-wheel motor 100 ( S30 ).

However, in step S28, it is determined whether the in-wheel motor 100 is faulty, and when the in-wheel motor 100 is faulty, the in-wheel control unit 80 maintains the driving stop state of the in-wheel motor 100, turns off the engine, and then starts a new engine. In the initialized state, the fault state can be determined again.

As described above, according to the control method of an in-wheel system having an automatic emergency braking function according to an embodiment of the present invention, the maximum output value of reverse torque to the in-wheel motor during emergency braking by AEB logic or in-wheel logic in a vehicle equipped with the in-wheel system By increasing the total deceleration amount of the vehicle by applying the It determines the failure of the in-wheel motor and turns it off so that safe operation can be achieved.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely an example, and those skilled in the art to which various modifications and equivalent other embodiments are possible. will understand

Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

10: AEB device 20: braking pressure sensing unit
30: in-wheel speed detection unit 40: in-wheel torque detection unit
50: vehicle speed detection unit 60: battery management device
70: in-wheel temperature sensing unit 80: in-wheel control unit
82: emergency braking determination unit 84: fault diagnosis unit
90: in-wheel motor driving unit 100: in-wheel motor

Claims (7)

a braking pressure sensing unit that senses a braking pressure that operates a brake;
an in-wheel speed sensing unit for sensing the rotational speed of the in-wheel motor;
an in-wheel torque sensing unit for detecting a torque of the in-wheel motor;
an in-wheel motor driving unit for driving the in-wheel motor; and
The in-wheel motor receives an emergency braking signal from a peripheral device or receives the braking pressure, the rotational speed, and the torque from the braking pressure sensing unit, the in-wheel speed sensing unit, and the in-wheel torque sensing unit, respectively, to determine an emergency braking state It performs emergency braking by outputting the maximum value of reverse torque to the in-wheel motor through a driving unit, determines the failure state of the in-wheel motor based on the battery state and the driving state of the in-wheel motor, and drives the in-wheel motor normally In-wheel control unit; including,
The in-wheel control unit,
Determining an emergency braking state of the vehicle by receiving an emergency braking signal from the peripheral device or receiving the braking pressure, the rotational speed, and the torque from the braking pressure sensing unit, the in-wheel speed sensing unit, and the in-wheel torque sensing unit, respectively Including; emergency braking determination unit;
The emergency braking determination unit determines that the emergency braking is in an emergency braking state when any one of a case where the braking pressure is equal to or greater than a set pressure, a decrease in the rotation speed, and the torque is a reverse torque, or a case in which the emergency braking signal is input and
The in-wheel control unit determines a failure state of the in-wheel motor based on a first failure diagnosis condition after performing emergency braking. If the fault condition is determined based on the second fault diagnosis condition in the normal driving condition wider than the diagnosis condition, the in-wheel motor is normally driven, and the fault condition is determined based on the second fault diagnosis condition. An in-wheel system with an automatic emergency braking function, characterized in that the in-wheel motor maintains the driving stop state.
The in-wheel system with an automatic emergency braking function according to claim 1, wherein the peripheral device includes an Autonomous Emergency Braking (AEB) device.
The automatic emergency braking function according to claim 1, wherein the in-wheel control unit receives the vehicle speed from the vehicle speed sensing unit after emergency braking and determines a failure state when the vehicle speed is decelerated to less than a set speed. in-wheel system with
The method of claim 1, wherein the in-wheel control unit comprises:
Failure diagnosis for diagnosing the failure of the in-wheel motor by receiving an inverter fault code and a battery fault code from the in-wheel motor driving unit and the battery management device, respectively, and receiving the rotation speed and temperature from the in-wheel speed sensing unit and the in-wheel temperature sensing unit, respectively The in-wheel system with an automatic emergency braking function, characterized in that it further comprises a unit.
determining, by the in-wheel controller, an emergency braking state of the vehicle;
performing emergency braking by outputting, by the in-wheel controller, a maximum reverse torque value to the in-wheel motor through an in-wheel motor driving unit, if the emergency braking state is determined as a result of determining the emergency braking state;
determining, by the in-wheel controller, a failure state of the in-wheel motor based on a first failure diagnosis condition after emergency braking; and
When the in-wheel control unit determines the failure state of the in-wheel motor, stopping the driving of the in-wheel motor if the failure state is found, and normally driving the in-wheel motor if the in-wheel motor is normal;
The step of determining the emergency braking state includes:
receiving, by the in-wheel control unit, an emergency braking signal from a peripheral device;
receiving, by the in-wheel control unit, a braking pressure, a rotational speed, and a torque from a braking pressure sensing unit, an in-wheel speed sensing unit, and an in-wheel torque sensing unit, respectively; and
determining, by the in-wheel control unit, as an emergency braking state when any one of a case in which the braking pressure is equal to or greater than a set pressure, the rotation speed is reduced, and the torque is a reverse torque, or a case in which the emergency braking signal is input is satisfied; including;
determining, by the in-wheel control unit, a failure state of the in-wheel motor based on the first failure diagnosis condition when the in-wheel control unit receives the vehicle speed from the vehicle speed sensing unit and the vehicle speed is decelerated to less than a set speed; and
determining, by the in-wheel control unit, a failure state of the in-wheel motor based on a second failure diagnosis condition in a normal driving condition wider than the first failure diagnosis condition when a set time elapses after stopping the driving of the in-wheel motor;
Automatic emergency braking further comprising; if the in-wheel control unit determines the failure state of the in-wheel motor, and if it is a failure state, maintaining the driving stop state of the in-wheel motor, and normally driving the in-wheel motor if normal. A control method for an in-wheel system with a function.
The method of claim 5, wherein the peripheral device includes an Autonomous Emergency Braking (AEB) device.
The method of claim 5, wherein the determining of the fault state of the in-wheel motor comprises: the in-wheel control unit receives an inverter fault code and a battery fault code from the in-wheel motor driving unit and the battery management device, respectively, and detects the in-wheel speed sensing unit and the in-wheel temperature A control method of an in-wheel system with an automatic emergency braking function, characterized in that receiving rotational speed and temperature respectively from a unit and determining a failure state of the in-wheel motor.

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