KR20240115049A - Driving Torque Control Apparatus And Method For Vehicle - Google Patents

Abstract

A torque braking device and method are disclosed. Cheoyang's torque braking device according to this embodiment is a driving torque control device for a vehicle including a driver assistance system that provides a preset braking force to the brake unit based on a signal received from a detection unit that detects a stationary or approaching obstacle. , a speed sensor that outputs a speed signal corresponding to the speed of the vehicle, a pedal sensor that outputs a driver torque signal that corresponds to the driving torque generated by the driver's operation of the accelerator pedal, and a speed sensor, a pedal sensor, and the torque of the vehicle. It is provided including a control unit that outputs a preset minimum engine torque value based on the speed signal, driver torque signal, and engine torque signal respectively received from the sensor.

Description

Driving Torque Control Apparatus And Method For Vehicle}

The present invention relates to a driving torque control device and method for a vehicle, and more specifically, to a driving torque control device and method for a vehicle equipped with and operating a collision avoidance system.

Recently, research has been conducted on vehicles equipped with an advanced driver assist system (ADAS) that actively provides information on vehicle status, driver status, and surrounding environment to reduce the burden on the driver and improve convenience. is actively underway.

One of these driver assistance systems is Rear Cross-Traffic Collision-Avoidance Assist (RCCA) and Parking Collision-Avoidance Assist-Reverse (PCA-R). .

This driver assistance system detects obstacles such as approaching vehicles using radar or ultrasonic sensors installed in the vehicle, and brakes are performed by an electronic braking system such as IDB (Integrated Dynamic Brake) or ESC (Electronic Stability Control).

However, when driving torque is added by the driver's operation of the accelerator pedal while the driver assistance system is in operation, there is a problem in that sufficient braking force is not generated due to braking slip phenomenon, which may result in a collision accident.

This embodiment provides a driving torque control device for a vehicle that is provided with braking force due to the operation of a driver assistance system and is capable of preventing a collision due to braking by controlling the driving torque generated by the driver's operation of the accelerator pedal; and We would like to provide a method.

According to one embodiment of the present invention, it includes a driver assistance system that provides a preset braking force to a braking unit based on a signal received from a detection unit that detects a stopping or approaching obstacle, and the braking force is provided by the driver assistance system, A driving torque control device for a vehicle, comprising: a speed sensor that outputs a speed signal corresponding to the speed of the vehicle, and a pedal sensor that outputs a driver torque signal that corresponds to the driving torque generated by the driver's operation of the accelerator pedal of the vehicle. , a torque sensor outputting an engine torque signal corresponding to the engine torque of the vehicle, and based on the speed signal, the driver torque signal, and the engine torque signal received from the speed sensor, the pedal sensor, and the torque sensor, respectively. A driving torque control device for a vehicle including a control unit that outputs a preset minimum engine torque value is provided.

The control unit compares the speed signal with a preset speed limit value, and when the speed signal exceeds the speed limit value, the control unit compares the driver torque signal with a preset driver torque limit value, and when the driver torque signal exceeds the driver torque limit value. If the value is exceeded, the engine torque signal is compared with a preset engine torque limit value, and if the engine torque signal exceeds the engine torque limit value, the preset minimum engine torque value is output.

The control unit outputs a preset minimum engine torque value when the driver torque signal is present.

The control unit stops outputting a preset minimum engine torque value when there is no braking force provided by the driver assistance system.

According to another embodiment of the present invention, it includes a driver assistance system that provides a preset braking force to a braking unit based on a signal received from a detection unit that detects a stopping or approaching obstacle, and the braking force is provided by the driver assistance system. In a method of controlling driving torque of a vehicle, the speed of the vehicle is compared with a preset speed limit value, and when the speed of the vehicle exceeds the speed limit value, the driver torque generated by manipulating the accelerator pedal of the vehicle is adjusted to a preset value. Compare with a driver torque limit value, and if the driver torque exceeds the driver torque limit value, compare the torque in the engine of the vehicle with a preset engine torque limit value, and if the engine torque exceeds the engine torque limit value, A method for controlling driving torque of a vehicle including outputting a set minimum engine torque value is provided.

The method of controlling driving torque of the vehicle includes outputting a preset minimum engine torque value when the driver torque is generated.

The method of controlling driving torque of the vehicle includes stopping output of a preset minimum engine torque value when braking force is not provided by the driver assistance system.

The vehicle driving torque control device and method according to this embodiment controls the driving torque generated by the driver's operation of the accelerator pedal in a vehicle receiving braking force due to the operation of the driver assistance system to prevent collisions due to braking slip. can do.

1 is a block diagram showing the configuration of a vehicle to which a driving torque control device for a vehicle according to an embodiment of the present invention is applied.
Figure 2 is a block diagram showing the main configuration of a vehicle driving torque control device according to an embodiment of the present invention.
Figure 3 is a graph to explain the braking slip phenomenon that occurs when the driving torque control device of a vehicle according to an embodiment of the present invention does not operate.
Figure 4 is a graph to explain the braking slippage phenomenon that is suppressed when the driving torque control device of a vehicle according to an embodiment of the present invention is activated.
Figure 5 is a flowchart showing an algorithm of a method for controlling driving torque of a vehicle according to an embodiment of the present invention.

Like reference numerals refer to like elements throughout the specification. This specification does not describe all elements of the embodiments, and general content or overlapping content between the embodiments in the technical field to which the disclosed invention pertains is omitted. The term 'part, module, member, block' used in the specification may be implemented as software or hardware, and depending on the embodiment, a plurality of 'part, module, member, block' may be implemented as a single component, or It is also possible for one 'part, module, member, or block' to include multiple components.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only direct connection but also indirect connection, and indirect connection includes connection through a wireless communication network. do.

Additionally, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary.

Throughout the specification, when a member is said to be located “on” another member, this includes not only cases where a member is in contact with another member, but also cases where another member exists between the two members.

Terms such as first and second are used to distinguish one component from another component, and the components are not limited by the above-mentioned terms.

Singular expressions include plural expressions unless the context clearly makes an exception.

The identification code for each step is used for convenience of explanation. The identification code does not explain the order of each step, and each step may be performed differently from the specified order unless a specific order is clearly stated in the context. there is.

Hereinafter, the operating principle and embodiments of the disclosed invention will be described with reference to the attached drawings.

1 is a block diagram showing the configuration of a vehicle to which a driving torque control device for a vehicle according to an embodiment of the present invention is applied. Additionally, Figure 2 is a block diagram showing the main configuration of a vehicle driving torque control device according to an embodiment of the present invention.

Referring to FIGS. 1 and 2 , a vehicle V to which a vehicle driving torque control device according to an embodiment of the present invention is applied includes a driver assistance system.

Here, the driver assistance system 10 includes a detection unit 11 for detecting obstacles approaching the vehicle V, such as a radar or ultrasonic sensor, and a detection unit 11 for detecting obstacles approaching the vehicle V based on the signal detected by the detection unit 11. Braking force is provided to the braking unit 12.

Such vehicle assistance system 10 may be, for example, Rear Cross-Traffic Collision-Avoidance Assist (RCCA), Rear Parking Collision-Avoidance Assist-Reverse (PCA-R), etc. .

Additionally, in the driver assistance system 10, the braking unit 12 may be controlled by an electronic brake device such as Integrated Dynamic Brake (IDB) or Electronic Stability Control (ESC).

In addition, although not shown in the driver assistance system 10, the detection unit 11 is not provided in the vehicle V, but is provided separately in a parking facility, etc. to detect an obstacle, receive a corresponding signal, and use the braking unit 12. It may be configured to provide braking force.

A driving torque control device for a vehicle according to an embodiment of the present invention includes the driver assistance system 10 and is used to control the driving torque in the vehicle V in which the driver assistance system 10 is operating. will be.

The driving torque control device for a vehicle according to an embodiment of the present invention controls the driving torque of the vehicle based on the speed sensor 100, pedal sensor 200, torque sensor 300, and signals received from these sensors. It includes a control unit 400 that does.

More specifically, the speed sensor 100 outputs a speed signal (hereinafter referred to as a speed signal) corresponding to the speed of the vehicle and may be a wheel speed sensor or the like.

Additionally, the pedal sensor 200 outputs a signal (hereinafter referred to as driver torque signal) corresponding to the driving torque generated by the driver's operation of the accelerator pedal of the vehicle.

Additionally, the torque sensor 300 outputs a signal (hereinafter referred to as engine torque) corresponding to the engine torque of the vehicle.

Meanwhile, the control unit 400 includes a processor 410 and a memory 420.

The processor 610 can control the overall operation of the vehicle driving torque control device according to an embodiment of the present invention.

The memory 420 may store a program for processing or controlling the processor 410 and various data for operating a vehicle driving torque control device according to an embodiment of the present invention.

For example, the memory 420 includes not only volatile memories such as S-RAM and D-RAM, but also flash memory, Read Only Memory (ROM), and Erasable Programmable Read Only Memory (EP-ROM). : EPROM) and other non-volatile memories.

More specifically, the control unit 400 compares the speed signal with a preset speed limit value, and when the speed signal exceeds the speed limit value, compares the driver torque signal with a preset driver torque limit value, and compares the driver torque signal with a preset driver torque limit value. When the signal exceeds the driver torque limit value, the engine torque signal is compared with a preset engine torque limit value, and when the engine torque signal exceeds the engine torque limit value, a preset minimum engine torque value is output. .

Here, the minimum engine torque value refers to the friction torque generated by friction, and can be preset and stored in the memory 420.

Additionally, the control unit 400 may be configured to output the engine torque response value when there is a driver torque signal and to maintain the engine torque when there is no driver torque signal.

Accordingly, the vehicle driving torque control device according to this embodiment controls the driving torque generated by the driver's operation of the accelerator pedal in a vehicle receiving braking force due to the operation of the driver assistance system to prevent collisions due to braking slip. It can be prevented.

Meanwhile, Figure 3 is a graph to explain the braking slippage phenomenon that occurs when the driving torque control device of a vehicle according to an embodiment of the present invention does not operate.

Referring to FIG. 3, the actual engine torque of the vehicle gradually increases in response to the driver torque signal generated by the driver's operation of the accelerator pedal.

Accordingly, the acceleration required by the investment assistance system 10 greatly decreases in a stepwise manner, while the actual acceleration of the vehicle decreases gently. That is, when the vehicle's driving torque control device according to an embodiment of the present invention does not operate, the vehicle (V) brakes and slips due to the driver's torque signal, which causes a collision of the vehicle (V). It can cause it.

At this time, the total braking force provided to the vehicle V by the braking unit 12 may be estimated as a value obtained by subtracting the driver torque from the braking force output to the braking unit 12 by the investment assistance system 10. You can.

Figure 4 is a graph to explain the braking slippage phenomenon that is suppressed when the driving torque control device of a vehicle according to an embodiment of the present invention is activated.

On the other hand, referring to FIG. 4, the actual engine torque of the vehicle excludes an increase in some sections due to the output of a preset engine torque minimum value from the control unit 400 in place of the driver torque signal generated by the driver's operation of the accelerator pedal. and can be maintained.

That is, when the vehicle's driving torque control device according to an embodiment of the present invention is activated, the actual acceleration of the vehicle matches the acceleration required by the investment assistance system 10 except for some sections, thereby preventing the braking slip phenomenon. This can be suppressed.

At this time, the total braking force provided to the vehicle V by the braking unit 12 is estimated as a value obtained by subtracting the minimum value of the engine torque from the braking force output to the braking unit 12 by the investment assistance system 10. It can be.

Accordingly, the vehicle drive control device according to an embodiment of the present invention controls the driving torque generated by the driver's operation of the accelerator pedal in a vehicle that is receiving braking force due to the operation of the driver assistance system to prevent braking due to slippage. Collisions can be prevented.

Meanwhile, Figure 5 is a flowchart showing an algorithm of a vehicle driving control method according to an embodiment of the present invention.

Referring to FIGS. 1 and 5 , a vehicle to which the vehicle driving control method according to an embodiment of the present invention is applied includes the driver assistance system 10 as described above.

The driver assistance system 10 includes a detection unit 11 for detecting obstacles approaching the vehicle V, as described in the vehicle drive control device according to an embodiment of the present invention, and detection in the detection unit 11. Based on the received signal, braking force is provided to the brake unit 12 of the vehicle V.

Referring to FIG. 5, in the method of controlling the driving torque of a vehicle in which braking force is provided by the driver assistance system 10 (S100), the speed of the vehicle is compared with a preset speed limit value (S200) and the vehicle's If the speed exceeds the speed limit value, the driver torque generated by manipulating the accelerator pedal of the vehicle is compared with a preset driver torque limit value (S300), and if the driver torque exceeds the driver torque limit value, the vehicle Comparing the engine torque with a preset engine torque limit value (S400) and, if the engine torque exceeds the engine torque limit value, outputting the preset minimum engine torque value (S500).

Additionally, the method of controlling the driving torque of the vehicle may include outputting a preset minimum engine torque value when the driver torque is generated without comparing the engine torque with a preset engine torque limit value (S400).

Additionally, the method of controlling driving torque of the vehicle may include stopping output of a preset minimum engine torque value when braking force is not provided by the driver assistance system 10.

Accordingly, the method of controlling the driving of a vehicle according to an embodiment of the present invention controls the driving torque generated by the driver's operation of the accelerator pedal in a vehicle receiving braking force due to the operation of the driver assistance system, thereby controlling the driving torque generated by the driver's operation of the accelerator pedal. Collisions can be prevented.

As described above, the disclosed embodiments have been described with reference to the attached drawings. A person skilled in the art to which the present invention pertains will understand that the present invention can be practiced in forms different from the disclosed embodiments without changing the technical idea or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

V. Vehicle 10. Driver assistance systems
11. Detection unit 12. Braking unit
100. Speed sensor 200. Pedal sensor
300. Torque sensor 400. Control unit
410. Processor 420. Memory

Claims (7)

A driving torque control device for a vehicle including a driver assistance system that provides a preset braking force to a brake unit based on a signal received from a detection unit that detects a stationary or approaching obstacle, comprising:
a speed sensor that outputs a speed signal corresponding to the speed of the vehicle;
a pedal sensor that outputs a driver torque signal corresponding to driving torque generated by the driver's operation of the accelerator pedal of the vehicle; and
Driving torque of the vehicle, including a control unit that outputs a preset minimum engine torque value based on the speed signal, the driver torque signal, and the engine torque signal received from the speed sensor, the pedal sensor, and the torque sensor of the vehicle, respectively. Control device. According to paragraph 1,
The control unit
Compare the speed signal with a preset speed limit value, and if the speed signal exceeds the speed limit value,
Compare the driver torque signal with a preset driver torque limit value, and if the driver torque signal exceeds the driver torque limit value,
A driving torque control device for a vehicle that compares the engine torque signal with a preset engine torque limit value and outputs a preset minimum engine torque value when the engine torque signal exceeds the engine torque limit value. According to paragraph 1,
The control unit
A driving torque control device for a vehicle that outputs a preset minimum engine torque value when the driver torque signal is present. According to paragraph 1,
The control unit
A driving torque control device for a vehicle that stops outputting a preset minimum engine torque value when there is no braking force provided by the driver assistance system. A driving torque control method for a vehicle including a driver assistance system that provides a preset braking force to a brake unit based on a signal received from a detection unit that detects a stationary or approaching obstacle, comprising:
Compare the speed of the vehicle with a preset speed limit value, and if the speed of the vehicle exceeds the speed limit value,
The driver torque generated by manipulating the accelerator pedal of the vehicle is compared with a preset driver torque limit value, and if the driver torque exceeds the driver torque limit value,
A method of controlling driving torque of a vehicle comprising comparing the engine torque of the vehicle with a preset engine torque limit value and outputting a preset minimum engine torque value when the engine torque exceeds the engine torque limit value. According to clause 5,
The driving torque control method of the vehicle is
A method of controlling driving torque for a vehicle, including outputting a preset minimum engine torque value when the driver torque occurs. According to clause 5,
The driving torque control method of the vehicle is
A method of controlling driving torque for a vehicle, including stopping output of a preset minimum engine torque value when there is no braking force provided by the driver assistance system.