CN115092105A - Automatic adjusting method for automobile brake pedal feeling and automobile - Google Patents
Automatic adjusting method for automobile brake pedal feeling and automobile Download PDFInfo
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- CN115092105A CN115092105A CN202210898470.9A CN202210898470A CN115092105A CN 115092105 A CN115092105 A CN 115092105A CN 202210898470 A CN202210898470 A CN 202210898470A CN 115092105 A CN115092105 A CN 115092105A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses an automatic adjusting method for automobile brake pedal feel and an automobile, wherein the method comprises the following steps: and acquiring habit data of a driver in the braking process, and adjusting the existing braking Map based on the habit data to enable the braking Map to accord with the habit of the driver. The invention has the advantages that: the braking Map is adjusted according to the data of each braking, so that the braking Map is more in line with the habit of a driver, and the user experience is improved; and the brake Map of each person can be matched through face recognition, so that the brake Map is ensured to be individually adapted to each person, and the intelligent degree of the vehicle is improved.
Description
Technical Field
The invention relates to the field of automobile brake pedal training, in particular to an automatic automobile brake pedal feeling adjusting method and an automobile.
Background
The frozen state of the current brake pedal feeling is adjusted and fixed according to manufacturers, and only one pedal feeling is obtained after mass production. The driving habits of everyone are different, and one pedal feeling cannot meet the requirements of the public. Generally, male drivers prefer a pedal feel with a large braking force, and female drivers prefer a pedal feel with a small braking force. At present, the road is complicated, the power of the vehicle is promoted, and the pedal feeling caused by the synchronous promotion is required. However, the discomfort and the better pedal feel of the vehicle may also lead to complaints: the problem after sale that brake force is not big enough, brake response is too sensitive, the braking is soft etc. how to solve the footboard feel and to promoting user experience crucial, generally only fixed brake sense among the prior art, so can't satisfy customer's demand that the self-adaptation is dynamic.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an automatic adjusting method for automobile brake pedal feeling and an automobile.
In order to achieve the purpose, the invention adopts the technical scheme that: an automatic adjusting method for automobile brake pedal feeling comprises the following steps:
and acquiring habit data of a driver in the braking process, and adjusting the existing braking Map based on the habit data to enable the braking Map to accord with the habit of the driver.
After the vehicle is started, the personalized brake Map matched with the driver is obtained through identity recognition to perform brake control, and the habit data of the driver is detected in the brake process to adjust the personalized brake Map.
And during identity recognition, if the personalized braking Map corresponding to the identity information is not obtained, taking the stored standard braking Map as the personalized braking Map corresponding to the identity information.
The brake ECU outputs the brake torque according to a brake Map, wherein the brake Map refers to a relation Map between the pedal stroke and the brake torque, and the relation between the pedal stroke and the brake torque is adjusted by adjusting the existing brake Map based on the habit data.
Brake pedal travel data and deceleration signals are collected at each braking to represent the habits of the driver, and then the braking Map is adjusted based on the habits of the driver.
The method comprises the steps of collecting travel data and deceleration signals of a brake pedal during each braking, and increasing or decreasing braking torque in a braking Map according to the collected travel data and deceleration signals of the brake pedal.
The number of times the vehicle is braked during each vehicle trip is detected, and the braking torque in the brake Map is adjusted on the basis of the number of times of braking.
And in the process of one-time driving, comparing the braking times with a braking time threshold value, and increasing the braking torque in the braking Map when the braking times is greater than the braking time threshold value.
And matching the adjusted brake Map with the identity information and storing the matched brake Map after each braking or stopping.
An automobile and an automatic adjusting method for automobile brake pedal feeling.
The invention has the advantages that: the brake Map is adjusted according to the data of each braking, so that the brake Map is more in line with the habit of a driver, and the user experience is improved; and the brake Map of each person can be matched through face recognition, so that the brake Map is ensured to be individually adapted to each person, and the intelligent degree of the vehicle is improved.
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The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic diagram of an automatic adjusting method for the pedal feel of an automobile brake according to the present invention.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
The invention aims to provide a strategy for automatically adjusting the feel of a brake pedal of an automobile, which is only suitable for braking under a normal driving condition, and emergency braking is not in the category. After the system collects and analyzes the braking action of the driver, the optimal pedal feeling suitable for driving is given, and the satisfaction degree of the driver on braking can be improved. The emergency braking means that the pedal travel change rate is larger than a certain change rate threshold value, and the judgment belongs to the emergency braking at the moment.
Under a normal state, after the vehicle leaves a factory, a host factory uniformly adjusts and sets a standard brake Map to be stored in a brake ECU, the standard Map refers to a corresponding curve of the travel of a brake pedal and the brake torque or a comparison table in one-to-one correspondence, the acquired travel data of the brake pedal during braking is used for acquiring the corresponding brake torque based on the standard brake Map and then outputting the brake torque to realize braking, and the brake torque changes in real time along with the change of the travel of the pedal in real time to control the braking of the vehicle. However, in this case, the habit of failing to adapt to each person may easily occur, for example, some people like to rapidly reduce the speed, and some people like to meet the speed reduction, so in order to adapt to each person, the method for automatically adjusting the pedal feeling of the brake of the automobile is provided, and the specific scheme is as follows:
firstly, a standard brake Map is calibrated in the brake ECU when the vehicle leaves the factory, and the standard brake Map is used for realizing the brake control of the vehicle.
When the vehicle is used, after the vehicle is started every time, the vehicle-mounted face recognition system can perform face recognition on a driver to judge the identity information of the driver at the moment, then obtains the personalized brake Map matched with the driver through the identity recognition to perform brake control, and detects the habit data of the driver in the brake process to adjust the personalized brake Map.
When a driver uses the vehicle for the first time or a new driver uses the vehicle, if the face identification fails to obtain the corresponding identity information, the brake ECU matches a standard brake Map for the driver as an individualized brake Map; the standard brake Map accords with the individualized brake Map which is used by a driver through the adjustment travel repeatedly based on the driver data in the driving process, the brake Map is stored in the brake ECU and is matched with the identity of the driver, and when the driver uses the standard brake Map again next time, the corresponding individualized brake Map is obtained through direct identity recognition, so that the individualized brake Map is matched.
During identification, if the personalized brake Map corresponding to the identity information is not acquired, the stored standard brake Map is used as the personalized brake Map corresponding to the identity information, when a driver drives, brake parameters are collected in real time to represent habit data of the driver, and the existing brake Map is adjusted based on the habit data, so that the brake Map accords with habits of the driver.
When the driver brakes each time, the driver needs to brake by deeply pedaling and the driver needs to brake by lightly pedaling, and the stored personalized brake Map is finely adjusted by collecting the data, so that the habit requirements of the user are met.
During braking, the brake ECU outputs braking torque according to a braking Map stored in the ECU, wherein the braking Map refers to a relation Map between pedal travel and braking torque, the existing braking Map of data collected in the braking process is adjusted after braking is completed to adjust the relation between the pedal travel and the braking torque, and the adjustment of the application refers to fine adjustment of the braking torque corresponding to the braking pedal travel under the condition that the braking pedal travel is kept unchanged in the braking Map, so that fine adjustment of the braking Map is realized.
The application can adopt two modes to adjust the personalized brake Map:
1. the method comprises the steps of collecting travel data of a brake pedal and deceleration signals to represent habits of a driver during each braking, and then adjusting a brake Map based on the habits of the driver to increase or decrease the brake torque in the brake Map. Detecting that the travel of a brake pedal is deep during primary braking, and if the travel of the brake pedal is larger than a set pedal travel threshold, finely adjusting the brake torque value while keeping the pedal travel unchanged in a brake Map, wherein the fine adjustment refers to that the corresponding brake torque increases the torque t under the same pedal travel data, and the t is a calibrated tiny torque value; otherwise, fine adjustment is carried out on the reduction torque t, and the brake torque corresponding to the pedal stroke in the Map is reduced by the torque t in a unified mode.
2. The number of times of braking of the vehicle is detected during each trip of the vehicle, and the braking torque in the brake Map is adjusted based on the number of times of braking.
The process of each stroke refers to that the brake ECU is in a stroke process from starting to flameout of the vehicle when detecting that the vehicle is started, in the process of one driving, the braking frequency is compared with a braking frequency threshold value, and when the braking frequency is greater than the braking frequency threshold value, the braking torque in the brake Map is increased, namely the braking torque is increased while the pedal stroke parameter is kept unchanged in the brake Map stored in the brake ECU after braking is finished, the magnitude of each adjustment is torque t, and the torque t can be calibrated.
The updated brake Map is stored in the brake ECU after each trimming of the brake Map, and can be used again for the next braking or the next use of the vehicle. During storage, the finely-adjusted personalized Map needs to be stored and matched with identity information, and a corresponding personalized brake Map can be conveniently obtained based on the identity recognized by the face when the vehicle is used next time.
In a preferred embodiment of the present application, the brake ECU stores a standard brake Map, and when it is detected that the brake pedal change rate is greater than the set change rate during the current braking, and in an emergency such as an emergency brake, braking needs to be performed according to the standard brake Map calibrated by a manufacturer, so as to ensure the safety of braking, and avoid the safety risk caused by the personalized brake Map.
In a preferred embodiment, in consideration of safety requirements and regulatory requirements, in the adjusted brake Map, the torque that is increased or decreased by the fine adjustment while keeping the brake pedal stroke parameter constant is between the torque value ± nt in the standard Map, that is, the upper limit value and the lower limit value of the brake adjustment of the personalized brake Map are set, so as to avoid the occurrence of safety accidents, for example: in the standard braking Map, the braking torque corresponding to the pedal stroke a is b; there are numerous such curves in Map that correspond to point travel; when the torque b corresponding to the pedal stroke a is adjusted, the braking torque corresponding to the pedal stroke a is limited to b-nt to b + nt. The method is characterized in that the limitation of upward adjustment and downward adjustment of the braking torque is limited, t is the braking torque value adjusted each time, n is a positive number, and nt is the maximum torque threshold value adjusted, and the method can be realized through calibration, so that the defects that an unlimited school adapts to vehicle safety risks caused by driver habits and does not meet the requirements of regulations are avoided.
Obtaining by driver's habit: after the pedal travel, the brake deceleration and the brake switch signal obtain brake information such as the brake treading frequency and the like, the brake system automatically recommends proper pedal feeling under the condition of meeting the regulations and safety conditions, and finally recommends optimal pedal feeling through repeated iteration of the feedback of the driver for multiple times.
FIG. 1 is a schematic diagram of a pedal feel control strategy. The system shown in fig. 1 comprises: a driver 1; a pedal stroke sensor 2; a brake signal 3; a deceleration signal 4; brake ECU5, recommendation 6, storage 7, face recognition system 8, targets (different drivers) 9.
First, the driver 1 performs normal braking, and data of each braking includes: the pedal travel sensor 2, the brake signal 3 and the deceleration signal 4 are sent to the brake ECU5, and the ECU analyzes the default pedal feeling data of the system according to the data fed back by the driver, so that the requirements of the driver are met, wherein the pedal feeling data comprise various brake working conditions, a series of working conditions such as high speed, low speed and urban traffic lights. For example, 1: during the primary braking, the degree of driver demand can be judged according to the linearity of the pedal stroke sensor 2 and the deceleration linear signal 3, and the ECU5 performs system adjustment according to the collected braking data. And (3) repeatedly iterating the data acquired by the current brake (under the same type of working condition) and the scheme recommended by the ECU5 until the data are linearly consistent. For example, 2: the ECU obtains the braking times according to the braking signals 2 and the braking signals 2 in the process of one travel of the driver, and the braking times are used for measuring whether the braking times are reasonable or not based on the database. For this condition, the ECU5 is adapted to increase the braking force to reduce the number of driver's brakes. This scheme also requires iteration and verification and is performed in the manner described above with reference to example 1. And after the scheme verification is finished, namely after the braking is finished each time, taking the Map with one adjusted stroke as a recommended braking scheme, then storing the Map 7, determining a recommended target by face recognition when the vehicle is used next time or when the vehicle runs next time, and then finding out the matched personalized braking Map based on the face. The above example is a pedal feel scheme customized according to the driving habits of driver a, and so on, the system can customize the pedal feel of each driver, such as driver B, driver C, and so on. To the contrary, the automobile industry has the system. Then the driver can drive any one vehicle at will, and the ECU5 automatically recommends the pedal feeling through the internet system, so that the driving experience is better.
The invention discloses a strategy for automatically adjusting the pedal feeling of an automobile brake. The invention does not relate to the expenses of die sinking, cost and the like, has relatively low implementation cost, and can be realized by only adding one strategy and changing control software. The safety aspect has no risk, and the development can be implemented.
It is clear that the specific implementation of the invention is not restricted to the above-described modes, and that various insubstantial modifications of the inventive concept and solution are within the scope of protection of the invention.
Claims (10)
1. An automatic adjusting method for automobile brake pedal feeling is characterized by comprising the following steps:
and acquiring habit data of a driver in the braking process, and adjusting the existing braking Map based on the habit data to enable the braking Map to accord with the habit of the driver.
2. The automatic adjusting method of the feeling of the brake pedal of the automobile as claimed in claim 1, characterized in that: after the vehicle is started, the personalized brake Map matched with the driver is obtained through identity recognition to perform brake control, and the habit data of the driver is detected in the brake process to adjust the personalized brake Map.
3. The automatic adjusting method of the feeling of the brake pedal of the automobile as claimed in claim 2, characterized in that: and during identity recognition, if the personalized braking Map corresponding to the identity information is not acquired, taking the stored standard braking Map as the personalized braking Map corresponding to the identity information.
4. A method for automatically adjusting the feel of a brake pedal for an automobile according to any one of claims 1 to 3, characterized in that: the brake ECU outputs the brake torque according to a brake Map, wherein the brake Map refers to a relation Map between the pedal stroke and the brake torque, and the relation between the pedal stroke and the brake torque is adjusted by adjusting the existing brake Map based on the habit data.
5. The automatic adjusting method of the feeling of the brake pedal of the automobile as claimed in claim 4, characterized in that: brake pedal travel data and deceleration signals are collected at each braking to represent the habits of the driver, and then the braking Map is adjusted based on the habits of the driver.
6. The automatic adjusting method for the feeling of the brake pedal of the automobile as claimed in claim 5, characterized in that: the method comprises the steps of collecting travel data and deceleration signals of a brake pedal during each braking, and increasing or decreasing braking torque in a braking Map according to the collected travel data and deceleration signals of the brake pedal.
7. The automatic adjusting method of the feeling of the brake pedal of the automobile according to claim 5, characterized in that: the number of times the vehicle is braked during each vehicle trip is detected, and the braking torque in the brake Map is adjusted on the basis of the number of times of braking.
8. The automatic adjusting method of the feeling of the brake pedal of the automobile according to claim 7, characterized in that: and in the process of one-time driving, comparing the braking times with a braking time threshold value, and increasing the braking torque in the braking Map when the braking times is greater than the braking time threshold value.
9. The automatic adjusting method of the feeling of the brake pedal of the automobile as claimed in any one of claims 1 to 8, characterized in that: and matching the adjusted brake Map with the identity information and storing the matched brake Map after each braking or stopping.
10. An automobile, characterized in that: the automobile comprises an automatic adjusting method of automobile brake pedal feeling according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210898470.9A CN115092105B (en) | 2022-07-28 | 2022-07-28 | Automatic adjusting method for automobile brake pedal feel and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210898470.9A CN115092105B (en) | 2022-07-28 | 2022-07-28 | Automatic adjusting method for automobile brake pedal feel and automobile |
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| CN115092105A true CN115092105A (en) | 2022-09-23 |
| CN115092105B CN115092105B (en) | 2023-09-26 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120074770A1 (en) * | 2010-09-28 | 2012-03-29 | Robert Bosch Gmbh | Brake control of a vehicle based on driver behavior |
| CN108327720A (en) * | 2018-02-08 | 2018-07-27 | 浙江力邦合信智能制动系统股份有限公司 | A kind of Vehicular intelligent brake control method |
| CN108482187A (en) * | 2018-04-26 | 2018-09-04 | 浙江吉利汽车研究院有限公司 | The control method for vehicle and system of identity-based identification |
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- 2022-07-28 CN CN202210898470.9A patent/CN115092105B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120074770A1 (en) * | 2010-09-28 | 2012-03-29 | Robert Bosch Gmbh | Brake control of a vehicle based on driver behavior |
| CN103201148A (en) * | 2010-09-28 | 2013-07-10 | 罗伯特·博世有限公司 | Brake control of a vehicle based on driver behavior |
| CN108327720A (en) * | 2018-02-08 | 2018-07-27 | 浙江力邦合信智能制动系统股份有限公司 | A kind of Vehicular intelligent brake control method |
| CN108482187A (en) * | 2018-04-26 | 2018-09-04 | 浙江吉利汽车研究院有限公司 | The control method for vehicle and system of identity-based identification |
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| CN115092105B (en) | 2023-09-26 |
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