CN110901528B - Control method and device of vehicle body electronic stabilization system for rotating hub test - Google Patents
Control method and device of vehicle body electronic stabilization system for rotating hub test Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The invention provides a method and a device for controlling an electronic vehicle body stabilizing system for a hub test, which belong to the field of vehicle test control.
Description
Technical Field
The invention relates to the field of automobile test control, in particular to a control method and a control device for an electronic stability system of a rotating hub test automobile body.
Background
An Electronic Stability Program (ESP) system mounted on a vehicle can control an engine to reduce torque and control a brake system to slightly apply brake to a driving wheel of the vehicle when a road surface adhesion rate is low and the driving wheel of the vehicle is slipping, thereby suppressing the slipping of the driving wheel of the vehicle and realizing more effective power output.
In the prior art, a vehicle body electronic stabilization system generally determines whether a vehicle driving wheel slips or not by detecting a rotation speed difference between the vehicle driving wheel and a non-driving wheel in real time.
In implementing the present disclosure, the inventors found that the related art has at least the following problems:
when a vehicle is placed on a hub testing machine for testing, even if a central console button is used for closing the electronic vehicle body stabilizing system in advance, when the rotating speed difference between a driving wheel and a non-driving wheel is too large, the electronic vehicle body stabilizing system still can give an alarm and automatically starts when the rotating speed difference falls back to a normal range, and the starting of the electronic vehicle body stabilizing system can enable the fuel economy detection result of the vehicle measured in the hub testing to be lower than the actual situation, so that the accurate evaluation of the vehicle is not facilitated.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for controlling an electronic vehicle body stability system for a hub test, so that the vehicle can smoothly complete the hub test after the electronic vehicle body stability system is turned off in advance by using a button, so as to obtain a more accurate fuel economy test result.
Specifically, the method comprises the following technical scheme:
in one aspect, the present invention provides a vehicle body electronic stability system control method for a hub test, the method being performed by a vehicle control unit, the method comprising:
and when a closing instruction of the electronic stabilizing system of the vehicle body is received, setting the electronic stabilizing system of the vehicle body to be in a closing state.
When the electronic stabilizing system of the vehicle body is in a closed state, the rotating speed difference of the front wheel and the rear wheel is detected.
And comparing the magnitude relation between the rotation speed difference of the front wheel and the rear wheel and a preset first rotation speed difference threshold value.
And when the speed difference of the front wheel and the rear wheel is greater than the first speed difference threshold value, increasing the first speed difference threshold value by a preset fine adjustment value to obtain a second speed difference threshold value.
And when the rotation speed difference of the front wheel and the rear wheel is greater than the second rotation speed difference threshold value, setting the electronic stabilizing system of the vehicle body to be in a state to be started.
When the electronic stabilizing system of the vehicle body is in a state to be started and the rotating speed difference of the front wheel and the rear wheel is reduced to zero, the electronic stabilizing system of the vehicle body is set to be in a starting state.
Optionally, the electronic body stability system shutdown command is triggered by an electronic body stability system shutdown button on a center console of the vehicle, the method further comprising:
when the rotating speed difference of the front wheel and the rear wheel is larger than the second rotating speed difference threshold value, the alarm lamp on the vehicle central console is controlled to be turned on, and the buzzer on the vehicle central console is controlled to buzz.
Optionally, when the electronic vehicle body stabilizing system is in a closed state, detecting a difference between the rotation speeds of the front wheel and the rear wheel, including:
when the electronic stabilizing system of the automobile body is in a closed state, the anti-lock braking system is used for detecting the rotation speed difference of the front wheel and the rear wheel.
Optionally, the first speed difference threshold is set in accordance with a first peak speed of a first phase of a hub test for testing a condition of the vehicle during acceleration of the vehicle drive wheels from zero speed to the first peak speed;
the trim value is set based on a speed difference between a second peak speed of the hub test during a second phase of the vehicle acceleration from zero speed to the second peak speed and the first peak speed of the first phase of the vehicle acceleration.
The fine tuning value is smaller than the rotation speed difference value between the second peak rotation speed and the first peak rotation speed.
Optionally, the method further comprises:
and when the accumulated time of the electronic vehicle body stabilizing system in the state to be started is greater than the preset reset time, setting the electronic vehicle body stabilizing system in the starting state.
In another aspect, the present invention provides a vehicle body electronic stability system control apparatus for a hub test, the apparatus being used in a vehicle control unit, the apparatus comprising:
the closing module is configured to place the electronic vehicle body stabilizing system into a closed state when receiving a closing instruction of the electronic vehicle body stabilizing system.
The detection module is configured to detect the rotation speed difference of the front wheel and the rear wheel when the electronic stabilizing system of the vehicle body is in a closed state.
And the comparison module is configured to compare the magnitude relation between the front-wheel rotation speed difference and the rear-wheel rotation speed difference and a preset first rotation speed difference threshold value.
And the fine adjustment module is configured to increase the first speed difference threshold value by a preset fine adjustment value to obtain a second speed difference threshold value when the speed difference of the front wheel and the rear wheel is greater than the first speed difference threshold value.
And the to-be-started module is configured to set the electronic stability system of the vehicle body to be in a to-be-started state when the rotation speed difference of the front wheel and the rear wheel is greater than the second rotation speed difference threshold value.
And the starting module is configured to set the electronic vehicle body stabilizing system to be in a starting state when the electronic vehicle body stabilizing system is in a state to be started and the rotating speed difference of the front wheel and the rear wheel is reduced to zero.
Optionally, the body electrical stability system shutdown command is triggered by a body electrical stability system shutdown button on a center console of the vehicle, and the module to be turned on includes:
and the alarm submodule is configured to control an alarm lamp on the vehicle center console to light and a buzzer on the vehicle center console to buzz when the rotation speed difference of the front wheel and the rear wheel is greater than the second rotation speed difference threshold value.
Optionally, the detection module is configured to detect a front-rear wheel speed difference with a brake anti-lock braking system when the body electrical stability system is in an off state.
Optionally, it is characterized in that the first and second parts,
the first speed difference threshold is set according to a first peak speed of a first stage of a hub test for testing the state of the vehicle during acceleration of the vehicle drive wheels from zero speed to the first peak speed;
the trim value is set based on a speed difference between a second peak speed of the hub test during a second phase of the vehicle acceleration from zero speed to the second peak speed and the first peak speed of the first phase of the vehicle acceleration.
The fine tuning value is smaller than the rotation speed difference value between the second peak rotation speed and the first peak rotation speed.
Optionally, the opening module is further configured to:
and when the accumulated time of the electronic vehicle body stabilizing system in the state to be started is greater than the preset reset time, setting the electronic vehicle body stabilizing system in the starting state.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the embodiment of the invention provides a control method and a control device for an electronic vehicle body stabilizing system for a hub test.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a control method of an electronic body stabilization system for a hub test according to an embodiment of the present invention;
fig. 2 is a block diagram of a control device of an electronic vehicle body stabilization system for a hub test according to a second embodiment of the present invention;
fig. 3 is a graph showing the relationship between time and front axle wheel speed in a hub test according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
Example one
The embodiment provides a vehicle body electronic stability system control method for a hub test, which is executed by a vehicle controller, as shown in fig. 1, and includes steps S101, S102, S103, S104, S105 and S106, which will be described in detail below.
In step S101, when a vehicle body electronic stability system shutdown instruction is received, the vehicle body electronic stability system is placed in a shutdown state.
In this embodiment, the body electrical stability system shutdown command is triggered by a body electrical stability system shutdown button on the vehicle center console.
As an alternative example, a body Electronic Stability system OFF button may be provided on the trim panel surface on both sides of the vehicle shift lever to display an "ESP OFF" character, where ESP is an abbreviation of Electronic Stability Program, and an indicator lamp having two colors of green and red, respectively, is provided on the body Electronic Stability system OFF button.
In order to meet the requirements of a rotating hub test and guarantee the requirements in the actual driving process, the closing button of the electronic stabilizing system of the automobile body can have two pressing modes, the two pressing modes are short pressing and long pressing respectively, and the two pressing modes trigger the closing process of the electronic stabilizing system of the automobile body applicable to different conditions respectively.
When the accumulated time length of the pressed closing button of the electronic stability system of the automobile body does not exceed a first time threshold value and is released, the pressing mode is judged to be short pressing, at the moment, the closing process of the common electronic stability system is triggered, namely, an indicator lamp emits green light, the electronic stability system is closed, when the rotating speed difference of the front wheel and the rear wheel is larger than a first rotating speed difference threshold value, the electronic stability system is set to be in a state to be started, and after the rotating speed difference of the front wheel and the rear wheel is reduced to zero, the electronic stability system is started.
When the accumulated time duration that the vehicle body electronic stability system closing button is pressed exceeds the first time threshold and is released, the pressing mode is judged to be long pressing, at the moment, a vehicle body electronic stability system closing process suitable for the hub test is triggered, the indicator lamp emits red light, and the step S102 is further executed.
As an alternative embodiment, the first time threshold is two seconds.
In step S102, when the vehicle body electronic stability system is in the off state, a front-rear wheel rotation speed difference is detected.
The anti-lock braking system can monitor the rotating speed of each wheel in real time, so that when the rotating speed suddenly becomes zero, namely the wheels are locked, the brake pump is controlled to apply braking force intermittently to relieve the locking state of the wheels. Therefore, as an alternative embodiment, when the electronic stability system of the automobile body is in a closed state, the anti-lock braking system is used for detecting the rotation speed difference of the front wheel and the rear wheel, so that a rotation speed measuring device is not required to be additionally arranged, and the implementation cost is reduced.
In step S103, the magnitude relationship between the front-rear wheel rotation speed difference and the preset first rotation speed difference threshold value is compared.
In this embodiment, the first speed difference threshold is set in accordance with a first peak speed of a first phase of a hub test for testing a condition of the vehicle during acceleration of the vehicle drive wheels from zero speed to the first peak speed.
For example, fig. 3 shows the relationship between time and front axle wheel speed in a hub test in which the front axle is the drive axle, and the first phase (5s-16s) of the hub test shown in fig. 3 is for testing the horsepower speed profile, torque speed profile, instantaneous fuel consumption, and time required for acceleration of the vehicle during acceleration of the vehicle drive wheels from zero speed to a first peak speed.
As an alternative embodiment, the first speed difference threshold is equal to the first peak speed, which is 3m/s as shown in FIG. 3.
In step S104, when the front-rear wheel speed difference is greater than the first speed difference threshold, the first speed difference threshold is increased by a preset fine adjustment value to obtain a second speed difference threshold.
In this embodiment, the trim value is set based on a speed difference between a second peak speed of the second phase of the hub test for testing the condition of the vehicle during acceleration of the vehicle drive wheels from zero speed to the second peak speed and a first peak speed of the first phase.
Specifically, the second phase (20s-33s) of the hub test shown in FIG. 3 is for testing the horsepower speed profile, torque speed profile, instantaneous fuel consumption, and time required for acceleration of the vehicle during acceleration of the vehicle drive wheels from zero speed to a second peak speed.
As an alternative embodiment, the second peak speed is 6m/s, as shown in FIG. 3.
As an alternative embodiment, the trim value is smaller than the difference between the second peak rotational speed and the first peak rotational speed, in particular the trim value may be 1 m/s.
In step S105, when the front-rear wheel rotation speed difference is greater than the second rotation speed difference threshold, the vehicle body electronic stability system is set to the standby state.
Specifically, the state that the electronic vehicle body stabilizing system is set to be turned on refers to a state that the electronic vehicle body stabilizing system is set to stand by and ready to be turned on at any time.
In this embodiment, the method further includes: when the current rear wheel rotation speed difference is greater than the second rotation speed difference threshold value, the alarm lamp on the control console in the vehicle is controlled to be turned on, and the buzzer on the control console in the vehicle is controlled to buzz, so that the driver is reminded.
In step S106, when the electronic body stability system is in the state to be turned on and the rotational speed difference between the front wheel and the rear wheel is reduced to zero, the electronic body stability system is set to the on state.
Since the time of each stage of the hub test is not too long, in order to avoid that the vehicle body electronic stability system closing button is pressed for a long time due to misoperation in actual driving, the vehicle body electronic stability system closing mode suitable for the hub test is entered, so that the driving wheel cannot timely inhibit the slipping condition when the driving wheel continuously slips for a long time, as an optional embodiment, the method further comprises the following steps:
and when the accumulated time of the electronic stability system of the automobile body in the state to be started is greater than the preset reset time, setting the electronic stability system of the automobile body in the starting state.
As an alternative embodiment, the preset reset time may be 5 seconds.
Specifically, when the electronic vehicle body stabilization system is in an open state, the electronic vehicle body stabilization system can control the master cylinder and the throttle valve to suppress wheel slip, and when the electronic vehicle body stabilization system is in a closed state, the electronic vehicle body stabilization system cannot control the master cylinder and the throttle valve to suppress wheel slip.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the embodiment of the invention provides a control method of a vehicle body electronic stabilizing system for a hub test, which is characterized in that after the electronic stabilizing system is closed and the rotating speed difference of front and rear wheels is greater than a first rotating speed difference threshold value, the first rotating speed difference threshold value is continuously increased by preset fine tuning parameters to obtain a second rotating speed difference threshold value, only when the rotating speed difference of the front and rear wheels is greater than the second rotating speed difference threshold value, the vehicle body electronic stabilizing system is set to be in a state to be started, and the vehicle body electronic stabilizing system is started after the rotating speed difference of the front and rear wheels falls back to zero, so that a vehicle can smoothly complete the hub test, and the influence of the vehicle body electronic stabilizing system on the output torque of a vehicle driving wheel in the hub test process is avoided.
Example two
The embodiment provides a vehicle body electronic stability system control device for a hub test, which is used in a vehicle control unit, and as shown in fig. 2, the device includes a closing module 201, a detecting module 202, a comparing module 203, a fine tuning module 204, a to-be-opened module 205, and an opening module 206:
the closing module 201 is configured to place the vehicle body electronic stability system in a closed state when receiving a vehicle body electronic stability system closing instruction.
In this embodiment, the body electrical stability system shutdown command is triggered by a body electrical stability system shutdown button on the vehicle center console.
As an alternative example, a body Electronic Stability system OFF button may be provided on the trim panel surface on both sides of the vehicle shift lever to display an "ESP OFF" character, where ESP is an abbreviation of Electronic Stability Program, and an indicator lamp having two colors of green and red, respectively, is provided on the body Electronic Stability system OFF button.
In order to meet the requirements of a rotating hub test and guarantee the requirements in the actual driving process, the closing button of the electronic stabilizing system of the automobile body can have two pressing modes, the two pressing modes are short pressing and long pressing respectively, and the two pressing modes trigger the closing process of the electronic stabilizing system of the automobile body applicable to different conditions respectively.
When the accumulated time length of the pressed closing button of the electronic stability system of the automobile body does not exceed a first time threshold value and is released, the pressing mode is judged to be short pressing, at the moment, the closing process of the common electronic stability system is triggered, namely, an indicator lamp emits green light, the electronic stability system is closed, when the rotating speed difference of the front wheel and the rear wheel is larger than a first rotating speed difference threshold value, the electronic stability system is set to be in a state to be started, and after the rotating speed difference of the front wheel and the rear wheel is reduced to zero, the electronic stability system is started.
When the accumulated time duration that the vehicle body electronic stability system closing button is pressed exceeds the first time threshold and is released, it is determined that the pressing mode is long pressing, at this time, a vehicle body electronic stability system closing flow suitable for the hub test is triggered, the indicator lamp emits red light, and the vehicle body electronic stability system closing flow further enters the detection module 202.
As an alternative embodiment, the first time threshold is two seconds.
The detection module 202 is configured to detect a front-rear wheel rotation speed difference when the electronic body stabilizing system is in a closed state.
The anti-lock braking system can monitor the rotating speed of each wheel in real time, so that when the rotating speed suddenly becomes zero, namely the wheels are locked, the brake pump is controlled to apply braking force intermittently to relieve the locking state of the wheels. Therefore, as an alternative embodiment, the detection module 202 is configured to detect the difference between the rotation speeds of the front and rear wheels by using the anti-lock braking system when the electronic stability system of the vehicle body is in the off state, so that a rotation speed measurement device is not required to be additionally arranged, and the implementation cost is reduced.
A comparison module 203 configured to compare a magnitude relationship between the front and rear wheel speed difference and a preset first speed difference threshold.
In this embodiment, the first speed difference threshold is set in accordance with a first peak speed of a first phase of a hub test for testing a condition of the vehicle during acceleration of the vehicle drive wheels from zero speed to the first peak speed.
For example, fig. 3 shows the relationship between time and front axle wheel speed in a hub test in which the front axle is the drive axle, and the first phase (5s-16s) of the hub test shown in fig. 3 is for testing the horsepower speed profile, torque speed profile, instantaneous fuel consumption, and time required for acceleration of the vehicle during acceleration of the vehicle drive wheels from zero speed to a first peak speed.
As an alternative embodiment, the first speed difference threshold is equal to a first peak speed, which is 3 m/s.
The fine-tuning module 204 is configured to increase the first speed difference threshold by a preset fine-tuning value to obtain a second speed difference threshold when the current rear wheel speed difference is greater than the first speed difference threshold.
In this embodiment, the trim value is set based on a speed difference between a second peak speed of the second phase of the hub test for testing the condition of the vehicle during acceleration of the vehicle drive wheels from zero speed to the second peak speed and a first peak speed of the first phase.
Specifically, the second phase (20s-33s) of the hub test shown in FIG. 3 is for testing the horsepower speed profile, torque speed profile, instantaneous fuel consumption, and time required for acceleration of the vehicle during acceleration of the vehicle drive wheels from zero speed to a second peak speed.
As an alternative embodiment, the second peak rotational speed is 6 m/s.
As an alternative embodiment, the trim value is smaller than the difference between the second peak rotational speed and the first peak rotational speed, in particular the trim value may be 1 m/s.
And the to-be-started module 205 is configured to set the electronic vehicle body stabilization system to be in a to-be-started state when the current rear wheel rotation speed difference is greater than the second rotation speed difference threshold value.
Specifically, the state that the electronic vehicle body stabilizing system is set to be turned on refers to a state that the electronic vehicle body stabilizing system is set to stand by and ready to be turned on at any time.
In this embodiment, the to-be-opened module 205 includes: and the alarm submodule 2051 is configured to control an alarm lamp on the vehicle center console to be turned on and control a buzzer on the vehicle center console to buzz when the current rear wheel rotation speed difference is greater than the second rotation speed difference threshold value, so that a driver is reminded.
The starting module 206 is configured to set the vehicle body electronic stability system to be in a starting state when the vehicle body electronic stability system is in a state to be started and the rotational speed difference between the front wheel and the rear wheel is reduced to zero.
Since the time of each stage of the hub test is not too long, in order to avoid that the body electronic stability system off button is pressed for a long time due to misoperation in actual driving, the body electronic stability system off mode suitable for the hub test is entered, so that the driving wheel cannot timely suppress the slipping condition when the slipping condition continues for a long time, as an optional embodiment, the starting module 206 is further configured to: and when the accumulated time of the electronic stability system of the automobile body in the state to be started is greater than the preset reset time, setting the electronic stability system of the automobile body in the starting state.
As an alternative embodiment, the preset reset time may be 5 seconds.
Specifically, when the electronic vehicle body stabilization system is in an open state, the electronic vehicle body stabilization system can control the master cylinder and the throttle valve to suppress wheel slip, and when the electronic vehicle body stabilization system is in a closed state, the electronic vehicle body stabilization system cannot control the master cylinder and the throttle valve to suppress wheel slip.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the embodiment of the invention provides a vehicle body electronic stabilization system control device for a hub test, which is used in a vehicle control unit and comprises a closing module 201, a detection module 202, a comparison module 203, a fine adjustment module 204, a module to be started 205 and a starting module 206: after the electronic stabilizing system is closed, when the rotating speed difference of the front wheel and the rear wheel is greater than the first rotating speed difference threshold value, the preset fine adjustment parameter is continuously added to the first rotating speed difference threshold value to obtain a second rotating speed difference threshold value, only when the rotating speed difference of the front wheel and the rear wheel is greater than the second rotating speed difference threshold value, the electronic stabilizing system of the vehicle body is set to be in a state to be started, and the electronic stabilizing system of the vehicle body is started after the rotating speed difference of the front wheel and the rear wheel falls back to zero, so that the vehicle can smoothly complete the hub test, and the situation that the electronic stabilizing system of the vehicle body influences the output torque of the vehicle driving wheel in the hub test process is avoided.
The present embodiment and the first embodiment are based on the same inventive concept and are device embodiments corresponding to the first embodiment of the method, so that those skilled in the art will understand that the description of the first embodiment also applies to the present embodiment, and some technical details are not described in the present embodiment again.
In the present application, it is to be understood that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A vehicle body electronic stability system control method for a hub test, the method being performed by a vehicle control unit, the method comprising:
when a closing instruction of an electronic vehicle body stabilizing system is received, setting the electronic vehicle body stabilizing system to be in a closing state;
when the electronic vehicle body stabilizing system is in a closed state, detecting a rotation speed difference of a front wheel and a rear wheel;
comparing the magnitude relation between the rotation speed difference of the front wheel and the rear wheel and a preset first rotation speed difference threshold value;
when the speed difference of the front wheel and the rear wheel is greater than the first speed difference threshold value, increasing the first speed difference threshold value by a preset fine adjustment value to obtain a second speed difference threshold value;
when the rotating speed difference of the front wheel and the rear wheel is larger than the second rotating speed difference threshold value, setting the electronic stabilizing system of the vehicle body to be in a state to be started;
and when the electronic vehicle body stabilizing system is in a state to be started and the rotating speed difference of the front wheel and the rear wheel is reduced to zero, setting the electronic vehicle body stabilizing system in a starting state.
2. The method of claim 1, wherein the electronic body stability system shutdown command is triggered by an electronic body stability system shutdown button on a vehicle center console, the method further comprising:
and when the rotating speed difference of the front wheel and the rear wheel is greater than the second rotating speed difference threshold value, controlling an alarm lamp on the vehicle central console to be turned on, and controlling a buzzer on the vehicle central console to buzz.
3. The method of claim 1, wherein detecting a front-rear wheel speed difference when the electronic body stability system is in an off state comprises:
and when the electronic vehicle body stabilizing system is in a closed state, detecting the rotation speed difference of the front wheel and the rear wheel by using an anti-lock braking system.
4. The method of claim 1,
the first speed difference threshold value is set according to a first peak speed of a first stage of a hub test, and the first stage of the hub test is used for testing the state of a vehicle in the process that a vehicle driving wheel is accelerated from zero speed to the first peak speed;
the fine adjustment value is set according to a rotation speed difference value between a second peak rotation speed of a second stage of the rotating hub test and the first peak rotation speed of a first stage, and the second stage of the rotating hub test is used for testing the state of the vehicle in the process that the driving wheel of the vehicle accelerates from zero rotation speed to the second peak rotation speed;
the fine adjustment value is smaller than a rotation speed difference value between the second peak rotation speed and the first peak rotation speed.
5. The method of claim 1, further comprising:
and when the accumulated time of the electronic stability system of the vehicle body in the state to be started is greater than the preset reset time, setting the electronic stability system of the vehicle body in the starting state.
6. An electronic vehicle body stabilization system control device for a hub test, wherein the device is used in a vehicle control unit, and the device comprises:
the closing module is configured to set the electronic vehicle body stabilizing system to be in a closing state when a closing instruction of the electronic vehicle body stabilizing system is received;
the detection module is configured to detect a rotation speed difference of front and rear wheels when the electronic vehicle body stabilizing system is in a closed state;
the comparison module is configured to compare the magnitude relation between the front-wheel rotation speed difference and the rear-wheel rotation speed difference and a preset first rotation speed difference threshold value;
a fine adjustment module configured to increase the first speed difference threshold by a preset fine adjustment value to obtain a second speed difference threshold when the front and rear wheel speed difference is greater than the first speed difference threshold;
the to-be-started module is configured to set the electronic vehicle body stabilizing system to be in a to-be-started state when the rotation speed difference of the front wheel and the rear wheel is larger than the second rotation speed difference threshold value;
the starting module is configured to set the electronic vehicle body stabilizing system to be in a starting state when the electronic vehicle body stabilizing system is in a state to be started and the rotating speed difference of the front wheel and the rear wheel is reduced to zero.
7. The apparatus of claim 6, wherein the electronic body stability system shutdown command is triggered by an electronic body stability system shutdown button on a center console of the vehicle, and the module to be turned on comprises:
and the alarm submodule is configured to control an alarm lamp on the vehicle center console to light and a buzzer on the vehicle center console to buzz when the rotation speed difference of the front wheel and the rear wheel is greater than the second rotation speed difference threshold value.
8. The apparatus of claim 6, wherein the detection module is configured to detect a front-to-rear wheel speed difference with a brake anti-lock braking system when the body electrical stability system is in an off state.
9. The apparatus of claim 6,
the first speed difference threshold value is set according to a first peak speed of a first stage of a hub test, and the first stage of the hub test is used for testing the state of a vehicle in the process that a vehicle driving wheel is accelerated from zero speed to the first peak speed;
the fine adjustment value is set according to a rotation speed difference value between a second peak rotation speed of a second stage of the rotating hub test and the first peak rotation speed of a first stage, and the second stage of the rotating hub test is used for testing the state of the vehicle in the process that the driving wheel of the vehicle accelerates from zero rotation speed to the second peak rotation speed;
the fine adjustment value is smaller than a rotation speed difference value between the second peak rotation speed and the first peak rotation speed.
10. The apparatus of claim 6, wherein the opening module is further configured to:
and when the accumulated time of the electronic stability system of the vehicle body in the state to be started is greater than the preset reset time, setting the electronic stability system of the vehicle body in the starting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236912.8A CN110901528B (en) | 2019-12-05 | 2019-12-05 | Control method and device of vehicle body electronic stabilization system for rotating hub test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236912.8A CN110901528B (en) | 2019-12-05 | 2019-12-05 | Control method and device of vehicle body electronic stabilization system for rotating hub test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110901528A CN110901528A (en) | 2020-03-24 |
| CN110901528B true CN110901528B (en) | 2022-03-15 |
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