Braking special specification design and system based on user braking behavior

Abstract

The invention provides a braking special specification design and system based on a user braking behavior, and the method comprises the steps: extracting a plurality of parts of user data hierarchically according to a market sales proportion, each part of user data comprising a braking initial speed, a braking end speed and braking time; according to the initial braking speed, the final braking speed and the braking time, the braking deceleration corresponding to each piece of user data is obtained, and the corresponding braking grade is obtained according to the braking deceleration; performing statistics on the user data according to the braking grade, so as to obtain an anti-fatigue design target of the braking system according to a statistical result; and according to the anti-fatigue design target of the braking system, performing a braking test on a target vehicle, and detecting a test result. According to the application, the problem of insufficient design or over-design caused by deviation between domestic user use requirements and anti-fatigue design of a traditional brake system can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of brake test and in particular to a brake special specification design and system based on user braking behavior. Background Art

[0002] At present, most of the domestic braking system anti-fatigue design requirements come from foreign vehicle manufacturers, but the driving behavior and road conditions of car users in different countries are quite different, which will seriously affect the user's braking behavior. If the foreign braking system anti-fatigue design data is directly used to design the braking system for the domestic market, it may lead to a deviation between the "domestic user demand" and the "anti-fatigue design" of the braking system, resulting in under-design or over-design.

[0003] In summary, it is very important to design special test specifications for vehicle braking durability based on the real braking data generated by domestic users during driving. Summary of the invention

[0004] Based on this, the purpose of the present invention is to propose a braking-specification design and system based on user braking behavior, aiming to solve the problem of insufficient or over-design caused by the deviation between the "domestic user usage needs" and the "anti-fatigue design" of the traditional braking system.

[0005] In a first aspect, an embodiment of the present invention provides a method for designing a braking specification based on a user's braking behavior, the method comprising: Extract multiple sets of user data in different levels according to the market sales share, each set of user data includes initial braking speed, final braking speed, and braking time; Acquire a braking deceleration corresponding to each piece of user data according to the braking initial speed, the braking final speed, and the braking time, and acquire a corresponding braking grade according to the braking deceleration; The user data is counted according to the braking level to obtain the anti-fatigue design target of the braking system according to the statistical results; A braking test is performed on a target vehicle according to the anti-fatigue design target of the braking system, and the test result is detected.

[0006] In some embodiments, the step of acquiring the braking deceleration corresponding to each piece of user data according to the braking initial speed, the braking final speed and the braking time, and acquiring the corresponding braking level according to the braking deceleration includes: With the preset initial braking speed value, the preset final braking speed value, and the preset braking deceleration as gradients, all user data are segmented and counted to obtain multiple time distribution result tables of braking deceleration.

[0007] In some embodiments, the step of acquiring the braking deceleration corresponding to each piece of user data according to the braking initial speed, the braking final speed and the braking time, and acquiring the corresponding braking level according to the braking deceleration further includes: The braking deceleration is obtained according to the following formula: a=(V2-V1) / Δt Among them, V1 represents the initial braking speed, the unit is m / s, V2 represents the final braking speed, the unit is m / s, Δt represents the inverse of the sampling frequency, the time is s.

[0008] In some embodiments, the step of performing a braking test on a target vehicle according to the anti-fatigue design target of the braking system and detecting the test result comprises: Design test conditions, including urban braking, urban simulation, suburban simulation, and high-speed outer ring simulation, and obtain the number of tests and mileage under each test condition; The anti-fatigue design goal of the braking system is to meet a preset percentage of users who travel a preset number of kilometers within a preset period without any major maintenance of the braking system.

[0009] In some embodiments, the step of performing a braking test on a target vehicle according to the anti-fatigue design target of the braking system and detecting the test result further includes: The vehicle is tested at 0%, 30%, 70% and 100% of the test respectively. The test items include braking performance evaluation and appearance inspection. The braking performance evaluation and appearance inspection each include multiple inspection contents. Each inspection content corresponds to an inspection standard to determine whether each inspection content meets the inspection standard and obtain the test result.

[0010] In a second aspect, an embodiment of the present invention further provides a braking specification design system based on user braking behavior, the system further comprising: A user data acquisition module is used to extract multiple user data in layers according to the market sales ratio, each of which includes the initial braking speed, the final braking speed, and the braking time; a braking deceleration calculation module, used to obtain a braking deceleration corresponding to each user data according to the braking initial speed, the braking final speed and the braking time, and to obtain a corresponding braking level according to the braking deceleration; A design target formulation module, used for performing statistics on the user data according to the braking level, so as to obtain a braking system anti-fatigue design target according to the statistical results; The test detection module is used to perform a braking test on a target vehicle according to the anti-fatigue design target of the braking system, and detect the test result.

[0011] In some embodiments, the braking deceleration calculation module is further used to: With the preset initial braking speed value, the preset final braking speed value, and the preset braking deceleration as gradients, all user data are segmented and counted to obtain multiple time distribution result tables of braking deceleration.

[0012] In some embodiments, the braking deceleration calculation module is further used to: The braking deceleration is obtained according to the following formula: a=(V2-V1) / Δt Among them, V1 represents the initial braking speed, the unit is m / s, V2 represents the final braking speed, the unit is m / s, Δt represents the inverse of the sampling frequency, the time is s.

[0013] In a third aspect, an embodiment of the present invention further provides a storage medium, including one or more programs stored in the storage medium, which, when executed, implements the above-mentioned method for designing braking special specifications based on user braking behavior.

[0014] In a fourth aspect, an embodiment of the present invention further provides an electronic device, the electronic device comprising a memory and a processor, wherein: The memory is used to store computer programs; When the processor is used to execute the computer program stored in the memory, the above-mentioned braking special specification design method based on user braking behavior is implemented.

[0015] Compared with the prior art, this application has the following advantages: This application uses the braking deceleration size as a benchmark, segments the user's braking process, collects statistical data on the user's braking time in each braking deceleration interval, and uses this data benchmark to design a braking system durability verification specification, which can effectively balance robust design and cost.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description or will be learned through embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flow chart of a braking special specification design method based on user braking behavior proposed in the first embodiment of the present invention; Figure 2 It is a schematic diagram of the deceleration cutting in the first embodiment of the present invention; Figure 3 A schematic diagram of the city simulation operation in the first embodiment of the present invention; Figure 4 It is a schematic diagram of the suburban simulation operation in the first embodiment of the present invention; Figure 5It is a schematic diagram of high-speed & outer loop simulation operation in the first embodiment of the present invention; Figure 6 A schematic diagram of a high-speed & outer loop simulation reference mark in the first embodiment of the present invention; Figure 7 It is a schematic diagram of the test process control in the first embodiment of the present invention; Figure 8 A schematic diagram of brake judder caused by abnormal wear of the brake disc in the first embodiment of the present invention; Fig. 9 A schematic diagram of oil leakage in the brake pipeline in the first embodiment of the present invention; Fig.10 This is a flow structure diagram of a braking specification design system based on user braking behavior in the second embodiment of the present invention.

[0018] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] The applicant found that the current domestic anti-fatigue design requirements for brake systems are mostly derived from the experience data of European and American vehicle manufacturers or brake system suppliers. Due to the large differences in domestic traffic conditions and user driving habits compared with those in Europe and the United States, it may lead to: 1. The anti-fatigue design of the brake system is insufficient, resulting in premature failure, affecting the safety of users' vehicles and even leading to recalls, which has a great negative impact on the company; 2. The fatigue resistance of the braking system is seriously over-designed, resulting in high costs and insufficient product competitiveness.

[0022] Based on this, this application proposes a braking special specification design method based on user braking behavior, so as to design a special specification for vehicle braking durability based on the braking data analysis results of users in the target market, which can effectively balance robust design and cost.

[0023] See also Figure 1 , which is a flow chart of a braking specification design method based on user braking behavior in a first embodiment of the present invention, the method comprises steps S101 to S104, wherein: Step S101: extracting multiple user data in layers according to market sales proportions, each of which includes initial braking speed, final braking speed, and braking time; In this step, stratified sampling is first performed to extract a certain amount of user data as samples. The braking information statistics of the samples will be used as market targets. Sampling needs to consider sales volume factors, typical geographical factors, climate factors, altitude factors, vehicle usage, etc. The sampling tracking time shall not be less than 1 year, and the total number of samples shall not be less than the minimum number required in theory.

[0024] In addition, using the brake pedal as a trigger signal, all braking processes and key information during vehicle driving, namely user data, are extracted, mainly including related information such as initial braking speed, final braking speed, and braking time.

[0025] Step S102: acquiring a braking deceleration corresponding to each piece of user data according to the braking initial speed, the braking final speed and the braking time, and acquiring a corresponding braking grade according to the braking deceleration; It should be noted that see Figure 2 In order to obtain the braking deceleration, it is necessary to calculate the deceleration according to the speed change, time change, and vehicle weight change. The braking deceleration is obtained according to the following formula: a=(V2-V1) / Δt Among them, V1 represents the initial braking speed, the unit is m / s, V2 represents the final braking speed, the unit is m / s, Δt represents the inverse of the sampling frequency, the time is s.

[0026] In addition, in the process of obtaining the corresponding braking level, all user data are segmented and counted with the preset initial braking speed value, the preset final braking speed value, and the preset braking deceleration as gradients to obtain multiple time distribution result tables of braking deceleration.

[0027] For example, 0.1g is used as the preset braking deceleration, 5km / h is used as the preset braking initial speed value and the preset braking final speed value, and the accumulated time of various braking deceleration intervals is obtained by segmentation and statistics. The following Tables 1 and 2 are the statistical results of the segmented time of a group of electric vehicle samples with a braking deceleration interval of 0.2~0.4g for more than 1.5 million km in one year.

[0028] Table 1 Time distribution results of 0.2-0.4g braking deceleration of a group of samples Table 2 The distribution results of the time proportion of 0.2-0.4g braking deceleration of a group of samples Step S103: performing statistics on the user data according to the braking level, so as to obtain the anti-fatigue design target of the braking system according to the statistical results; It should be noted that, in this step, the braking time distribution results of different users are statistically analyzed to obtain the anti-fatigue design target of the braking system. The anti-fatigue design target of the braking system is to meet the preset percentage of users who travel a preset number of kilometers within a preset period without any major overhaul of the braking system. For example, the following Table 3 is the result of "satisfying 95% of users and no braking system failure for 300,000 kilometers".

[0029] Table 3: Satisfy the requirements of 95% of users and the braking system will not fail within 300,000 km Step S104: performing a braking test on the target vehicle according to the anti-fatigue design target of the braking system, and detecting the test result.

[0030] In the step, regarding the braking test, it is necessary to design test conditions, which include urban braking, urban simulation, suburban simulation, and high-speed outer ring simulation, and obtain the number of tests and mileage under each test condition. The specific tests are as follows: 1. City Braking (1) Accelerate to 40 km / h with the accelerator fully open; (2) Brake to stop at a deceleration of 0.2g.

[0031] 2. Urban simulation (such as Figure 3 shown) (1) After entering the evaluation road, accelerate to 80 kph and maintain the WOT; (2) Slow down to 50 kph before entering a curve and maintain this speed through successive curves; (3) After entering the AB straight, accelerate to 70 kph and maintain the WOT; (4) Slow down to 50 kph before entering a curve and maintain this speed through successive curves; (5) After entering the CD straight, accelerate to 60 kph and maintain the WOT; (6) Slow down to 50 kph before the south curve and keep going through the curve; (7) After exiting the south curve, accelerate to 80 kph and maintain the WOT; (8) Slide and decelerate to 70 kph before the 1# braking point and maintain the speed; (9) Normal braking and stopping at brake point 1#; (10) Turn left at WOT and accelerate to 80 kph and maintain the speed; (11) Slide and decelerate to 70 kph before the 2# braking point and maintain the speed; (12) Braking at 0.5g at brake point 2; (13) Accelerate to 70 kph when turning left, decelerate to 50 kph before the curve and keep going through the curve; (14) After exiting the curve, accelerate to 70 kph and maintain the WOT. (15) Braking at 0.7g at the 3# braking point, the vehicle without ABS / ESP brakes to the maximum safe deceleration; (16) Turn left at WOT and accelerate to 90 kph and maintain the speed; (17) Slow down to 50 kph before the north curve and keep going through the curve; (18) After exiting the north curve, accelerate to 80 kph and maintain the speed; (19) Before entering a curve, decelerate to 50 kph and maintain the speed through the curve; (20) Slow down to 20 kph and maintain the speed before exiting; (21) Continue to the next operation or enter the next working state.

[0032] 3. Suburban simulation (such as Figure 4 shown) (1) Shift to D gear, enter the roundabout after confirming it is safe, and maintain the WOT acceleration to 50 km / h; (2) Maintain the D gear, accelerate to 70 km / h on the straight section before the 4# brake belt, brake to the stop at 0.3g after entering the 4# brake belt, and shift to the N gear; (3) Shift to D gear, enter the roundabout after confirming safety, accelerate to 80 km / h at WOT and maintain the speed, start gliding after passing the rest area, glide to 50 km / h before the curve and maintain the speed through the curve; (4) After exiting the curve, accelerate to 70 km / h at WOT, brake to the stop with 0.3g on the No. 1 brake, and shift to N gear; (5) Shift to D gear, enter the roundabout after confirming it is safe, and maintain the WOT acceleration to 50 km / h; (6) Maintain 50 km / h through Beiwan Road, accelerate to 70 km / h on the straight section before the 2# brake belt, brake to a stop at 0.3g after entering the 2# brake belt, and shift to N gear; (7) Shift to D gear, enter the roundabout after confirming safety, accelerate to 80 km / h at WOT and maintain the speed, start sliding at the "right guardrail start" position, maintain the speed to 70 km / h and enter the 3# brake belt, brake to the stop at 0.3g, and shift to N gear; (8) Shift to D gear, enter the roundabout after confirming it is safe, accelerate to 50 km / h at WOT and maintain the speed to pass through Nanwan Road; (9) Continue to the next operation or enter the next working condition.

[0033] 4. High-speed & outer loop simulation (such as Figure 5 and Figure 6 shown) (1) Enter the entrance of the expressway loop, park at the "Stop and Wait" position, and enter the loop after confirming it is safe: (2) Shift to D gear, accelerate to 80 km / h at WOT and keep going through the south curve; (3) After entering the West Straight, accelerate to 100 km / h at WOT and maintain the speed, coasting to the "Warning Light 1" position, and then brake to a stop at 0.7g after coasting to 60 km / h (60 km / h-0.7g-0 braking is performed only in the first lap, and 70 km / h-0.5g-0 braking is performed thereafter); (4) Shift to D gear, accelerate to 80 km / h at WOT and keep going through the north curve; (5) After entering the East Straight, accelerate to 100 km / h at WOT and maintain the speed, coast to the "Warning Light 2" position, and brake to stop at 0.5g after reaching 70 km / h (brake deceleration can be appropriately performed in advance, and the braking stop position must not exceed the warning light 3), and then shift to N gear; (6) Continue to the next operation or enter the next working condition.

[0034] In addition, during the brake test, the test times and mileage under each test condition will also be obtained. For details, please refer to Table 4 below: Table 4 Test times and mileage In addition, during the test, test operation control is also required. The test implementation is mainly controlled by Beidou positioning and navigation technology and vehicle automatic control technology (automatic monitoring of accelerator pedal, automatic monitoring of steering, automatic monitoring of brakes, etc.). The principle of the method is as follows: Figure 7 shown.

[0035] In addition, in some embodiments, after the test is completed, the vehicle will be inspected at 0%, 30%, 70%, and 100% of the test, respectively. The inspection items include braking performance evaluation and appearance inspection. The braking performance evaluation and appearance inspection each include multiple inspection contents, and each inspection content corresponds to an inspection standard to determine whether each inspection content meets the inspection standard and obtain the test results.

[0036] For example, the overall goal of this specification design is to "meet the goal of 95% of users and 300,000km without brake system overhaul in 10 years." The vehicle is inspected at 0%, 30%, 70%, and 100% of the test respectively. The inspection list and evaluation standard requirements are shown in Table 5 below.

[0037] Table 5 Examples of brake system inspection items and acceptance criteria By knowing which inspection contents meet the standards and which do not, targeted optimization can be carried out, which is conducive to balanced robust design.

[0038] In summary, according to the above-mentioned braking special specification design method based on user braking behavior, by taking the braking deceleration size as a benchmark, cutting the user's braking process, counting the user's braking time data in each braking deceleration interval, and designing the braking system durability verification specification based on this data, it is possible to effectively balance robust design and cost.

[0039] See also Fig.10 , which is a schematic diagram of the structure of a braking specification design system based on user braking behavior in a third embodiment, the system includes: The user data acquisition module 10 is used to extract multiple user data in layers according to the market sales proportion, each of which includes the initial braking speed, the final braking speed, and the braking time; A braking deceleration calculation module 20, for obtaining a braking deceleration corresponding to each user data according to the braking initial speed, the braking final speed and the braking time, and obtaining a corresponding braking level according to the braking deceleration; A design target formulation module 30, for collecting statistics on the user data according to the braking level, so as to obtain a braking system anti-fatigue design target according to the statistical results; The test detection module 40 is used to perform a braking test on the target vehicle according to the anti-fatigue design target of the braking system, and detect the test result.

[0040] On the other hand, the present invention further proposes a computer storage medium on which one or more programs are stored, and when the program is executed by a processor, the above-mentioned braking special specification design method based on user braking behavior is implemented.

[0041] On the other hand, the present invention further proposes an electronic device, including a memory and a processor, wherein the memory is used to store computer programs, and the processor is used to execute the computer programs stored in the memory to implement the above-mentioned braking special specification design method based on user braking behavior.

[0042] Those skilled in the art will appreciate that the logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For purposes of this specification, "computer-readable medium" may be any device that can contain storage, communication, propagation or transmission of a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0043] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0044] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A braking specification design method based on user braking behavior, characterized in that: The method comprises: Extract multiple sets of user data in different levels according to the market sales share, each set of user data includes initial braking speed, final braking speed, and braking time; Acquire a braking deceleration corresponding to each piece of user data according to the braking initial speed, the braking final speed, and the braking time, and acquire a corresponding braking grade according to the braking deceleration; The user data is counted according to the braking level to obtain the anti-fatigue design target of the braking system according to the statistical results; A braking test is performed on a target vehicle according to the anti-fatigue design target of the braking system, and the test result is detected.

2. The method for designing braking specifications based on user braking behavior according to claim 1, characterized in that: The step of acquiring the braking deceleration corresponding to each piece of user data according to the braking initial speed, the braking final speed and the braking time, and acquiring the corresponding braking level according to the braking deceleration comprises: With the preset initial braking speed value, the preset final braking speed value, and the preset braking deceleration as gradients, all user data are segmented and counted to obtain multiple time distribution result tables of braking deceleration.

3. The method for designing braking specifications based on user braking behavior according to claim 2, characterized in that: The step of acquiring the braking deceleration corresponding to each piece of user data according to the braking initial speed, the braking final speed and the braking time, and acquiring the corresponding braking level according to the braking deceleration also includes: The braking deceleration is obtained according to the following formula: a=(V2-V1) / Δt Among them, V1 represents the initial braking speed, the unit is m / s, V2 represents the final braking speed, the unit is m / s, Δt represents the inverse of the sampling frequency, the time is s.

4. The method for designing braking specifications based on user braking behavior according to claim 3 is characterized in that: The step of performing a braking test on a target vehicle according to the anti-fatigue design target of the braking system and detecting the test result comprises: Design test conditions, including urban braking, urban simulation, suburban simulation, and high-speed outer ring simulation, and obtain the number of tests and mileage under each test condition; The anti-fatigue design goal of the braking system is to meet a preset percentage of users who travel a preset number of kilometers within a preset period without any major maintenance of the braking system.

5. The method for designing braking specifications based on user braking behavior according to claim 4, characterized in that: The step of performing a braking test on the target vehicle according to the anti-fatigue design target of the braking system and detecting the test result also includes: The vehicle is tested at 0%, 30%, 70% and 100% of the test respectively. The test items include braking performance evaluation and appearance inspection. The braking performance evaluation and appearance inspection each include multiple inspection contents. Each inspection content corresponds to an inspection standard to determine whether each inspection content meets the inspection standard and obtain the test result.

6. A braking specification design system based on user braking behavior, characterized in that: The system further comprises: A user data acquisition module is used to extract multiple user data in layers according to the market sales ratio, each of which includes the initial braking speed, the final braking speed, and the braking time; a braking deceleration calculation module, used to obtain a braking deceleration corresponding to each user data according to the braking initial speed, the braking final speed and the braking time, and to obtain a corresponding braking level according to the braking deceleration; A design target formulation module, used for performing statistics on the user data according to the braking level, so as to obtain a braking system anti-fatigue design target according to the statistical results; The test detection module is used to perform a braking test on a target vehicle according to the anti-fatigue design target of the braking system, and detect the test result.

7. The braking specification design system based on user braking behavior according to claim 6, characterized in that: The braking deceleration calculation module is also used for: With the preset initial braking speed value, the preset final braking speed value, and the preset braking deceleration as gradients, all user data are segmented and counted to obtain multiple time distribution result tables of braking deceleration.

8. The braking specification design system based on user braking behavior according to claim 7, characterized in that: The braking deceleration calculation module is also used for: The braking deceleration is obtained according to the following formula: a=(V2-V1) / Δt Among them, V1 represents the initial braking speed, the unit is m / s, V2 represents the final braking speed, the unit is m / s, Δt represents the inverse of the sampling frequency, the time is s.

9. A storage medium, characterized in that: The storage medium stores one or more programs, which, when executed by the processor, implement the braking special specification design method based on user braking behavior as described in any one of claims 1-5.

10. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein: The memory is used to store computer programs; When the processor is used to execute the computer program stored in the memory, it implements the braking special specification design method based on user braking behavior as described in any one of claims 1-5.

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