CN113479176B - Electronic brake pedal adjustment method, device, apparatus, medium, and program product - Google Patents

Electronic brake pedal adjustment method, device, apparatus, medium, and program product Download PDF

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Publication number
CN113479176B
CN113479176B CN202110956726.2A CN202110956726A CN113479176B CN 113479176 B CN113479176 B CN 113479176B CN 202110956726 A CN202110956726 A CN 202110956726A CN 113479176 B CN113479176 B CN 113479176B
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China
Prior art keywords
pedal
curve
electronic brake
characteristic curve
brake pedal
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CN202110956726.2A
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CN113479176A (en
Inventor
霍晓锋
由佳
柏杨
夏金龙
于江
万兴
王俊
王来平
同兴
赖美军
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Zhejiang Geely Holding Group Co Ltd
Ningbo Geely Automobile Research and Development Co Ltd
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Zhejiang Geely Holding Group Co Ltd
Ningbo Geely Automobile Research and Development Co Ltd
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Publication of CN113479176A publication Critical patent/CN113479176A/en
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Priority to PCT/CN2022/103598 priority patent/WO2023020140A1/en
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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
    • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
    • 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
    • B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
    • 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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/3255—Systems in which the braking action is dependent on brake pedal data
    • 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
    • B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
    • B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/82—Brake-by-Wire, EHB

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Braking Elements And Transmission Devices (AREA)

Abstract

The application provides an electronic brake pedal adjusting method, device, equipment, medium and program product, wherein operating characteristic parameters of an electronic brake pedal are obtained, a characteristic diagram to be adjusted is determined and output according to the operating characteristic parameters, then an adjusting instruction input by a user is obtained, the adjusting instruction is used for editing and adjusting the characteristic diagram to be adjusted, and then a target characteristic curve of the electronic brake pedal is determined according to the adjusting instruction, so that the operating feeling of the electronic brake pedal meets the individual requirements of the user. The technical problem that control parameters of a brake operator cannot be fully adjusted according to self characteristics of a brake operator in the prior art is solved. The automatic adjustment of the operation control parameters of the brake operator is realized according to the personalized characteristics of different operators, and the technical effect of the use experience of the operators is improved.

Description

Electronic brake pedal adjustment method, device, apparatus, medium, and program product
Technical Field
The present application relates to the field of vehicle technologies, and in particular, to a method, an apparatus, a device, a medium, and a program product for adjusting an electronic brake pedal.
Background
With the popularization of electric vehicles, the wire control technology is gradually replacing the traditional mechanical structure. In recent years, various manufacturers of automobiles and parts successively provide a decoupling type electronic power-assisted brake device to replace a traditional mechanical brake pedal.
At present, the existing decoupling type electronic power-assisted brake device senses the brake intention of a driver through a pedal sensor, so that the pipeline pressure of four brake wheel cylinders is controlled to realize the effect of controlling the deceleration of a vehicle. However, the control strategy of the conventional electronic power-assisted brake device is mainly designed around a vehicle as a core, individual control requirements of a driver are ignored, and the control strategy can only be switched among a limited set of control parameters, but cannot be adjusted more specifically for the driver.
Therefore, the conventional technology has the technical problem that the control parameter of the brake operator cannot be fully adjusted according to the self characteristic of the brake operator.
Disclosure of Invention
The application provides an electronic brake pedal adjusting method, device, equipment, medium and program product, which aim to solve the technical problem that the control parameters of a brake operator cannot be fully adjusted according to the self characteristics of a brake operator in the prior art.
In a first aspect, the present application provides an electronic brake pedal adjustment method comprising:
acquiring operating characteristic parameters of an electronic brake pedal;
determining and outputting a characteristic diagram to be adjusted according to the operation characteristic parameters;
acquiring an adjusting instruction input by a user, wherein the adjusting instruction is used for editing and adjusting a characteristic diagram to be adjusted;
and determining a target characteristic curve of the electronic brake pedal according to the adjusting instruction so that the operation feeling of the electronic brake pedal meets the individual requirement of a user.
In one possible design, the operating characteristic parameters include: a set of multi-dimensional property arrays, the feature elements of each array in the set of multi-dimensional property arrays comprising: deceleration, maximum pedal force, minimum pedal force, and current pedal force;
correspondingly, determining and outputting a characteristic diagram to be adjusted according to the operating characteristic parameters, wherein the characteristic diagram to be adjusted comprises the following steps:
determining a first upper limit curve of the pedal force according to the deceleration and the maximum pedal force in each array;
determining a first lower limit curve of the pedal force according to the deceleration and the minimum pedal force in each array;
determining a first current characteristic curve of the pedal force according to the deceleration in each array and the current pedal force;
and outputting the first upper limit curve, the first lower limit curve and the first current characteristic curve on the interactive interface.
In one possible design, the adjustment instruction includes a global offset instruction, and the obtaining of the adjustment instruction input by the user includes:
acquiring an overall offset instruction input by a user in a preset operation mode;
correspondingly, the target characteristic curve of the electronic brake pedal is determined according to the adjusting instruction, and the target characteristic curve comprises the following steps:
and shifting the whole of the first current characteristic curve to the first upper limit curve or the first lower limit curve by a first preset amplitude according to the whole shifting command so as to determine a first target characteristic curve of the pedal force, wherein the target characteristic curve comprises the first target characteristic curve.
In one possible design, the adjustment instruction includes a local adjustment instruction, and the obtaining of the adjustment instruction input by the user includes:
acquiring a local adjusting instruction input by a user through a preset operation mode;
correspondingly, the target characteristic curve of the electronic brake pedal is determined according to the adjusting instruction, and the target characteristic curve comprises the following steps:
and according to at least one adjusting interval corresponding to the local adjusting instruction, performing offset adjustment on at least one curve segment of the first current characteristic curve between the first upper limit curve and the first lower limit curve by a second preset amplitude so as to determine a second target characteristic curve of the pedal force, wherein the target characteristic curve comprises a second target characteristic curve.
In one possible design, the feature elements include: deceleration, maximum pedal travel, minimum pedal travel, and current pedal travel;
correspondingly, determining and outputting a characteristic diagram to be adjusted according to the operating characteristic parameters, wherein the characteristic diagram to be adjusted comprises the following steps:
determining a second upper limit curve of the pedal stroke according to the deceleration and the maximum pedal stroke in each array;
determining a second lower limit curve of the pedal stroke according to the deceleration and the minimum pedal stroke in each array;
determining a second current characteristic curve of the pedal stroke according to the deceleration in each array and the current pedal stroke;
and outputting the second upper limit curve, the second lower limit curve and the second current characteristic curve at the interactive interface.
In one possible design, the adjustment instruction includes a global offset instruction, and the obtaining of the adjustment instruction input by the user includes:
acquiring an overall offset instruction input by a user through a preset operation mode;
correspondingly, the target characteristic curve of the electronic brake pedal is determined according to the adjusting instruction, and the target characteristic curve comprises the following steps:
and shifting the whole of the second current characteristic curve to a second upper limit curve or a second lower limit curve by a first preset amplitude according to the whole shifting command so as to determine a third target characteristic curve of the pedal stroke, wherein the target characteristic curve comprises the third target characteristic curve.
In one possible design, the adjustment instruction includes a local adjustment instruction, and the obtaining of the adjustment instruction input by the user includes:
acquiring a local adjusting instruction input by a user through a preset operation mode;
correspondingly, the target characteristic curve of the electronic brake pedal is determined according to the adjusting instruction, and the target characteristic curve comprises the following steps:
and according to at least one adjusting interval corresponding to the local adjusting instruction, performing offset adjustment on at least one curve segment of the second current characteristic curve between the second upper limit curve and the second lower limit curve by a fourth preset amplitude, so as to determine a fourth target characteristic curve of the pedal stroke, wherein the target characteristic curve comprises the fourth target characteristic curve.
Optionally, the method further includes:
acquiring an operation instruction input by a user;
and determining the control parameters of the brake system according to the operation command and the target characteristic curve.
In a second aspect, the present application provides an electronic brake pedal adjustment device comprising:
the acquisition module is used for acquiring the operating characteristic parameters of the electronic brake pedal;
the processing module is used for determining and outputting a characteristic diagram to be adjusted according to the operation characteristic parameters;
the acquisition module is also used for acquiring an adjusting instruction input by a user, and the adjusting instruction is used for editing and adjusting the characteristic diagram to be adjusted;
and the processing module is also used for determining a target characteristic curve of the electronic brake pedal according to the adjusting instruction so that the operation feeling of the electronic brake pedal meets the individual requirements of a user.
In one possible design, the operating characteristic parameters include: a set of multi-dimensional property arrays, the feature elements of each array in the set of multi-dimensional property arrays comprising: deceleration, maximum pedal force, minimum pedal force, and current pedal force;
a processing module for determining a first upper limit curve of the pedal force according to the deceleration and the maximum pedal force in each array; determining a first lower limit curve of the pedal force according to the deceleration and the minimum pedal force in each array; determining a first current characteristic curve of the pedal force according to the deceleration in each array and the current pedal force; and outputting the first upper limit curve, the first lower limit curve and the first current characteristic curve on the interactive interface.
In one possible design, the adjusting instruction comprises an overall offset instruction, and the acquiring module is used for acquiring the overall offset instruction input by a user in a preset operation mode;
and the processing module is used for shifting the whole of the first current characteristic curve to the first upper limit curve or the first lower limit curve by a first preset amplitude according to the whole shifting instruction so as to determine a first target characteristic curve of the pedal force, wherein the target characteristic curve comprises the first target characteristic curve.
In one possible design, the adjustment instruction includes a local adjustment instruction, and the acquisition module is used for acquiring the local adjustment instruction input by a user in a preset operation mode;
and the processing module is used for performing offset adjustment on at least one curve segment of the first current characteristic curve between the first upper limit curve and the first lower limit curve by a second preset amplitude according to at least one adjustment interval corresponding to the local adjustment instruction, so that a second target characteristic curve of the pedal force is determined, wherein the target characteristic curve comprises the second target characteristic curve.
In one possible design, the feature elements include: deceleration, maximum pedal travel, minimum pedal travel, and current pedal travel;
a processing module to:
determining a second upper limit curve of the pedal stroke according to the deceleration and the maximum pedal stroke in each array; determining a second lower limit curve of the pedal stroke according to the deceleration and the minimum pedal stroke in each array; determining a second current characteristic curve of the pedal stroke according to the deceleration in each array and the current pedal stroke; and outputting the second upper limit curve, the second lower limit curve and the second current characteristic curve at the interactive interface.
In one possible design, the adjusting instruction comprises an overall offset instruction, and the acquiring module is used for acquiring the overall offset instruction input by a user in a preset operation mode;
and the processing module is used for shifting the whole second current characteristic curve to a second upper limit curve or a second lower limit curve by a first preset amplitude according to the whole shifting instruction so as to determine a third target characteristic curve of the pedal stroke, wherein the target characteristic curve comprises a third target characteristic curve.
In one possible design, the adjusting instruction comprises a local adjusting instruction, and the obtaining module is used for obtaining the local adjusting instruction input by a user through a preset operation mode;
and the processing module is used for adjusting at least one curve segment of the second current characteristic curve in a deviation manner between the second upper limit curve and the second lower limit curve by a fourth preset amplitude according to at least one adjusting interval corresponding to the local adjusting instruction, so as to determine a fourth target characteristic curve of the pedal stroke, wherein the target characteristic curve comprises the fourth target characteristic curve.
Optionally, the obtaining module is further configured to obtain an operation instruction input by a user;
and the processing module is also used for determining the control parameters of the braking system according to the operation commands and the target characteristic curve.
In a third aspect, the present application provides an electronic device comprising:
a memory for storing program instructions;
and the processor is used for calling and executing the program instructions in the memory to execute any one of the possible electronic brake pedal adjusting methods provided by the first aspect.
In a fourth aspect, the present application provides a vehicle comprising: an electronic brake pedal and the electronic device provided in the third aspect;
the electronic brake pedal is electrically connected with a brake system of the vehicle to control the brake system to realize vehicle braking, and feedback force in the braking process is fed back to a user.
In a fifth aspect, the present application provides a storage medium having a computer program stored thereon, the computer program being configured to execute any one of the possible electronic brake pedal adjustment methods provided by the first aspect.
In a sixth aspect, the present application further provides a computer program product comprising a computer program that, when executed by a processor, implements any one of the possible electronic brake pedal adjustment system methods provided by the first aspect.
The application provides an electronic brake pedal adjusting method, device, equipment, medium and program product, wherein operating characteristic parameters of an electronic brake pedal are obtained, a characteristic diagram to be adjusted is determined and output according to the operating characteristic parameters, then an adjusting instruction input by a user is obtained, the adjusting instruction is used for editing and adjusting the characteristic diagram to be adjusted, and then a target characteristic curve of the electronic brake pedal is determined according to the adjusting instruction, so that the operating feeling of the electronic brake pedal meets the individual requirements of the user. The technical problem that control parameters of a brake operator cannot be fully adjusted according to self characteristics of a brake operator in the prior art is solved. The automatic adjustment of the operation control parameters of the brake operator is realized according to the personalized characteristics of different operators, and the technical effect of the use experience of the operators is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic view of an application scenario of an electronic brake pedal adjustment according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method for adjusting an electronic brake pedal according to an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of a brake pedal force profile provided by an embodiment of the present application;
FIG. 4 is a schematic illustration of a brake pedal travel characteristic provided by an embodiment of the present application;
FIG. 5 is a schematic diagram of a hardware principle of an adjusting knob according to an embodiment of the present disclosure;
FIG. 6 is a schematic flow chart illustrating another method for adjusting an electronic brake pedal provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of an electronic brake pedal adjustment device according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an electronic device provided in the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, including but not limited to combinations of embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any inventive step are within the scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and claims of this application and in the above-described drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The inventive concept of the present application is:
the physiological characteristics and the operation habits of different operators of the brake operator are classified in advance or customized individually, so that the operators can feel comfortable operation and can accurately sense the feedback condition of the vehicle during operation.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic view of an application scenario of an electronic brake pedal adjustment according to an embodiment of the present application. As shown in fig. 1, when a user depresses an electronic brake pedal 10, an electronic device 11 on the electronic brake pedal analyzes a braking intention of the user through a pedal force sensor 111 and a pedal stroke sensor 112, generates a corresponding control parameter according to the analyzed braking intention of the user, inputs the control parameter into a hydraulic device 13 of a brake system, and transmits a hydraulic pressure corresponding to the hydraulic device parameter to a vehicle brake caliper 14 for corresponding braking. The user can set the relationship curve of the pedal force and the deceleration corresponding to the pedal travel individually through the vehicle-mounted interactive interface 12. On the vehicle interactive interface 12, the user can directly personalize the characteristic curve 121 and/or the characteristic curve 122 via the buttons 123 or directly.
The following describes in detail how to implement the electronic brake pedal adjustment method provided by the present application.
Fig. 2 is a schematic flowchart of an electronic brake pedal adjustment method according to an embodiment of the present disclosure.
As shown in fig. 2, the specific steps of the electronic brake pedal adjusting method include:
s201, obtaining the operation characteristic parameters of the electronic brake pedal.
In this step, the operation characteristic parameters include: a set of multi-dimensional property arrays, the feature elements of each array in the set of multi-dimensional property arrays comprising: deceleration, maximum pedal force, minimum pedal force, and current pedal force.
Specifically, the multidimensional feature array set can be expressed as formula (1):
Figure BDA0003220597450000071
wherein, anFor deceleration, FMAX1Maximum pedal force, FMINnTo minimize pedal force, F0nIs the current pedal force.
In one possible design, the feature elements include: deceleration, maximum pedal travel, minimum pedal travel, and current pedal travel.
Specifically, the multidimensional feature array set can be expressed as formula (2):
Figure BDA0003220597450000081
wherein, anFor deceleration, SMAX1Maximum pedal stroke, SMINnMinimum pedal stroke, S0nThe current pedal stroke.
In one possible design, the feature elements include: deceleration, maximum pedal force, minimum pedal force, current pedal force, maximum pedal travel, minimum pedal travel, and current pedal travel.
Specifically, the multidimensional feature array set can be expressed as formula (3):
Figure BDA0003220597450000082
it should be noted that the feature elements may also include other contents, and those skilled in the art may select the feature elements according to practical situations, and the feature elements are not limited herein.
And S202, determining and outputting a characteristic diagram to be adjusted according to the operation characteristic parameters.
In this step, the multidimensional feature array set is converted into a feature curve, and the feature curve is displayed on an interactive interface of the vehicle, such as a vehicle-mounted display screen.
Fig. 3 is a schematic diagram of a brake pedal force characteristic curve provided in the embodiment of the present application. As shown in fig. 3, equation (1) is plotted as a characteristic curve of the brake pedal force using a preset curve-fitting model.
Specifically, the first upper limit curve f1 of the pedal force is determined based on the deceleration in each array and the maximum pedal force; determining a first lower limit curve f2 of the pedal force according to the deceleration in each array and the minimum pedal force; determining a first current characteristic f0 of the pedal force according to the deceleration in each array and the current pedal force; and outputting the first upper limit curve f1, the first lower limit curve f2 and the first current characteristic curve f0 at the interactive interface.
Fig. 4 is a schematic diagram of a brake pedal stroke characteristic provided in the embodiment of the present application. As shown in fig. 4, the equation (2) is plotted as a characteristic curve of the brake pedal stroke using a preset curve-fitting model.
Specifically, the second upper limit curve f1 of the pedal stroke is determined according to the deceleration in each array and the maximum pedal stroke; determining a second lower limit curve f2 of the pedal stroke according to the deceleration in each array and the minimum pedal stroke; determining a second current characteristic f0 of the pedal stroke according to the deceleration in each array and the current pedal stroke; and outputting a second upper limit curve f1, a second lower limit curve f2 and a second current characteristic curve f0 at the interactive interface.
In fig. 3 and 4, f0 may be a standard pedal force or pedal travel characteristic curve set according to the input demand when calibrating the brake system.
And S203, acquiring an adjusting instruction input by a user.
In this step, the adjustment instruction is used to edit and adjust the characteristic diagram to be adjusted.
In this embodiment, the adjustment instruction includes an overall offset instruction, and the overall offset instruction input by the user through a preset operation mode is acquired, where the preset operation mode includes: buttons, knobs, touch screens, etc.
Specifically, as shown in fig. 3 and 4, a plurality of sets of stepped pedal force or pedal travel characteristics may be implemented between f1 and f 2. Optionally, the characteristic curves are matched in the calibration matching process of the brake system, and linear control or nonlinear control with better pedal feeling is realized.
Fig. 5 is a schematic hardware diagram of an adjusting knob according to an embodiment of the present disclosure. As shown in FIG. 5, the mechanical structure of the adjusting knob and the slide rheostat RBecomeThe upper sliding sheet is connected to realize the output voltage U1And finally realizing the change of the output pedal force or the signal voltage of the pedal stroke sensor. Note that the resistor R1Acting to limit or restrict U1Is measured.
It should be noted that, when the knob is used for performing personalized adjustment on the characteristic curve, the knob can also be related to the current value of the signal output.
And S204, determining a target characteristic curve of the electronic brake pedal according to the adjusting instruction so that the operation feeling of the electronic brake pedal meets the individual requirements of the user.
In this step, the whole of the first current characteristic curve is shifted to the first upper limit curve or the first lower limit curve by a first preset amplitude according to the whole shift command, so as to determine a first target characteristic curve of the pedal force, wherein the target characteristic curve comprises the first target characteristic curve.
Specifically, as shown in fig. 1, the user may shift the characteristic curve as a whole by clicking the integral adjustment button 123, and click a plus sign to approach the characteristic curve at the upper limit, and click a minus sign to approach the characteristic curve at the lower limit.
Further, after the response characteristic of the brake pedal is adjusted, the method further comprises the following steps:
acquiring an operation instruction input by a user; and determining the control parameters of the brake system according to the operation command and the target characteristic curve. Namely, after the response characteristic of the brake pedal is adjusted by a user to enable the operation feeling of the brake pedal to meet the individual requirement of the user, the electronic brake pedal is used for operating the brake system of the vehicle.
The embodiment provides an electronic brake pedal adjusting method, which includes the steps of obtaining operating characteristic parameters of an electronic brake pedal, determining and outputting a characteristic diagram to be adjusted according to the operating characteristic parameters, then obtaining an adjusting instruction input by a user, editing and adjusting the characteristic diagram to be adjusted according to the adjusting instruction, and then determining a target characteristic curve of the electronic brake pedal according to the adjusting instruction, so that the operating feeling of the electronic brake pedal meets the individual requirements of the user. The technical problem that control parameters of a brake operator cannot be fully adjusted according to self characteristics of a brake operator in the prior art is solved. The automatic adjustment of the operation control parameters of the brake operator is realized according to the personalized characteristics of different operators, and the technical effect of the use experience of the operators is improved.
FIG. 6 is a schematic flow chart of another method for adjusting an electric brake pedal provided in the practice of the present application. As shown in fig. 6, the electronic brake pedal adjusting method includes the specific steps of:
s601, obtaining the operation characteristic parameters of the electronic brake pedal.
And S602, determining and outputting a characteristic diagram to be adjusted according to the operation characteristic parameters.
For steps S601-S602, reference may be made to steps S201-S202, which are not described herein.
And S603, acquiring an adjusting instruction input by a user.
In this step, the adjustment instruction includes a local adjustment instruction. And acquiring a local adjusting instruction input by a user through a preset operation mode. The preset operation mode comprises the following steps: (1) a user clicks a preset adjusting point on a selected characteristic curve, and then dials the adjusting point to move up and down or left and right, or moves the adjusting point through a knob or a button, so that the shape of the characteristic curve near the adjusting point is changed;
(2) and the user double clicks any point on the characteristic curve, sets the point as an adjusting point, and then stirs the adjusting point to adjust the corresponding interval on the characteristic curve.
(3) The user clicks two points on the characteristic curve in sequence, the curve between the two points is set as an adjustment target, and then at least one point on the adjustment target is dragged to change the shape of the curve.
S604, according to at least one adjusting interval corresponding to the local adjusting instruction, at least one curve section of the second current characteristic curve is adjusted in a shifting mode between the second upper limit curve and the second lower limit curve in a fourth preset amplitude.
In this step, the second current characteristic includes: the map of the pedal force versus deceleration and the map of the pedal stroke versus deceleration are, for example, the characteristic maps shown in fig. 3 and 4.
The adjustment interval may be a curve in a certain section of the characteristic curve, or may be the entire characteristic curve.
It should be noted that the user can arbitrarily perform offset adjustment on the characteristic curve between the second upper limit curve (i.e., the upper limit curve) and the second lower limit curve (i.e., the lower limit curve), but when the user's adjustment instruction indicates that the characteristic curve exceeds the range limited by the second upper limit curve and the second lower limit curve, the corresponding maximum or minimum limit value can only be reached.
Further, when the user inputs an adjustment instruction, the adjustment result is synchronously displayed on the vehicle-mounted screen, timing is started after the user stops inputting, and if the adjustment instruction input by the user is not received again within the preset time, the preset evaluation model is started to evaluate the control safety of the brake system corresponding to the adjusted characteristic curve.
For example, if the characteristic curve adjusted by the user makes the braking performance too sensitive (i.e. the calculated braking response sensitivity is greater than a first preset threshold) or too slow (i.e. the calculated braking response sensitivity is less than a second preset threshold), a prompt is sent to the user, or the characteristic curve is automatically optimized to a shape that meets the preset safety performance requirement on the current basis.
And S605, acquiring an operation instruction input by a user.
In the embodiment, after the user finishes adjusting the characteristic parameters of the electrically known pedal, namely, finishes adjusting the pedal feel, the user enters a test driving mode, and in the mode, the running speed of the vehicle is limited within a preset threshold value, such as 30 km/h. So that the user can actually feel and adapt to the change of the brake pedal feel.
And S606, determining control parameters of the brake system according to the operation command and the target characteristic curve.
In this step, after the user operates the brake pedal, the operation intention of the user is fed back according to the adjusted target characteristic curve, and then the corresponding control parameter is generated for the brake system.
For example, if the user adjusts the pedal stroke characteristic curve to shorten the pedal stroke corresponding to the maximum braking force, the brake is performed according to the adjusted pedal stroke.
It should be noted that, in the test driving mode, if the user feels that the pedal feel has been adapted to the adjusted pedal feel, a corresponding confirmation instruction or application instruction may be input, the characteristic parameter corresponding to the pedal feel is determined to be updated, and the test driving mode is ended. If the user feels that further adjustment is needed or reduction is needed, the vehicle needs to be stopped first, and then the corresponding button is clicked on the vehicle-mounted interactive interface for setting.
In this embodiment, the driver may store at least one set of corresponding electronic brake pedal feel control parameters in the vehicle-mounted controller in advance. Other drivers can call the characteristic parameter as an adjustment basis to perform personalized adjustment during debugging. Of course, the control parameters can be automatically switched by using identity recognition means such as face recognition when the sensor detects that the identity of the driver changes.
The embodiment provides an electronic brake pedal adjusting method, which includes the steps of obtaining operating characteristic parameters of an electronic brake pedal, determining and outputting a characteristic diagram to be adjusted according to the operating characteristic parameters, then obtaining an adjusting instruction input by a user, editing and adjusting the characteristic diagram to be adjusted according to the adjusting instruction, and then determining a target characteristic curve of the electronic brake pedal according to the adjusting instruction, so that the operating feeling of the electronic brake pedal meets the individual requirements of the user. The technical problem that control parameters of a brake operator cannot be fully adjusted according to self characteristics of a brake operator in the prior art is solved. The automatic adjustment of the operation control parameters of the brake operator is realized according to the personalized characteristics of different operators, and the technical effect of the use experience of the operators is improved.
Fig. 7 is a schematic structural diagram of an electronic brake pedal adjusting device according to an embodiment of the present application. The electronic brake pedal adjustment device 700 may be implemented by software, hardware, or a combination of both.
As shown in fig. 7, the electronic brake pedal adjusting apparatus 700 includes:
an obtaining module 701, configured to obtain an operation characteristic parameter of an electronic brake pedal;
a processing module 702, configured to determine and output a characteristic map to be adjusted according to the operation characteristic parameter;
the obtaining module 701 is further configured to obtain an adjustment instruction input by a user, where the adjustment instruction is used to edit and adjust a characteristic diagram to be adjusted;
the processing module 702 is further configured to determine a target characteristic curve of the electronic brake pedal according to the adjustment instruction, so that the operation feeling of the electronic brake pedal meets the individual requirement of the user.
In one possible design, the operating characteristic parameters include: a set of multi-dimensional property arrays, the feature elements of each array in the set of multi-dimensional property arrays comprising: deceleration, maximum pedal force, minimum pedal force, and current pedal force;
a processing module 702 for determining a first upper limit curve of pedal force based on the deceleration and the maximum pedal force in each array; determining a first lower limit curve of pedal force according to the deceleration and the minimum pedal force in each array; determining a first current characteristic curve of the pedal force according to the deceleration in each array and the current pedal force; and outputting the first upper limit curve, the first lower limit curve and the first current characteristic curve at the interactive interface.
In one possible design, the adjustment instruction includes an overall offset instruction, and the obtaining module 701 is configured to obtain the overall offset instruction input by the user through a preset operation mode;
the processing module 702 is configured to shift the entirety of the first current characteristic curve to the first upper limit curve or the first lower limit curve by a first preset magnitude according to the entirety shift instruction, so as to determine a first target characteristic curve of the pedal force, where the target characteristic curve includes the first target characteristic curve.
In one possible design, the adjustment instruction includes a local adjustment instruction, and the obtaining module 701 is configured to obtain the local adjustment instruction input by the user through a preset operation mode;
the processing module 702 is configured to perform offset adjustment on at least one curve segment of the first current characteristic curve between the first upper limit curve and the first lower limit curve by a second preset amplitude according to at least one adjustment interval corresponding to the local adjustment instruction, so as to determine a second target characteristic curve of the pedal force, where the target characteristic curve includes the second target characteristic curve.
In one possible design, the feature elements include: deceleration, maximum pedal travel, minimum pedal travel, and current pedal travel;
a processing module 702 configured to:
determining a second upper limit curve of the pedal stroke according to the deceleration and the maximum pedal stroke in each array; determining a second lower limit curve of the pedal stroke according to the deceleration and the minimum pedal stroke in each array; determining a second current characteristic curve of the pedal stroke according to the deceleration in each array and the current pedal stroke; and outputting the second upper limit curve, the second lower limit curve and the second current characteristic curve at the interactive interface.
In one possible design, the adjustment instruction includes an overall offset instruction, and the obtaining module 701 is configured to obtain the overall offset instruction input by the user through a preset operation mode;
the processing module 702 is configured to shift the whole of the second current characteristic curve to the second upper limit curve or the second lower limit curve by a first preset amplitude according to the whole shift instruction, so as to determine a third target characteristic curve of the pedal stroke, where the target characteristic curve includes the third target characteristic curve.
In a possible design, the adjustment instruction includes a local adjustment instruction, and the obtaining module 701 is configured to obtain the local adjustment instruction input by the user through a preset operation mode;
the processing module 702 is configured to perform offset adjustment on at least one curve segment of the second current characteristic curve between the second upper limit curve and the second lower limit curve by a fourth preset amplitude according to at least one adjustment interval corresponding to the local adjustment instruction, so as to determine a fourth target characteristic curve of the pedal stroke, where the target characteristic curve includes the fourth target characteristic curve.
Optionally, the obtaining module 701 is further configured to obtain an operation instruction input by a user;
the processing module 702 is further configured to determine a control parameter of the brake system according to the operation command and the target characteristic curve.
It should be noted that the apparatus provided in the embodiment shown in fig. 7 may execute the method provided in any of the above method embodiments, and the specific implementation principle, technical features, term explanations and technical effects thereof are similar and will not be described herein again.
Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 8, the electronic device 800 may include: at least one processor 801 and a memory 802. Fig. 8 shows an electronic device as an example of a processor.
The memory 802 stores programs. In particular, the program may include program code including computer operating instructions.
Memory 802 may comprise high-speed RAM memory and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The processor 801 is configured to execute computer-executable instructions stored in the memory 802 to implement the methods described in the method embodiments above.
The processor 801 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.
Alternatively, the memory 802 may be separate or integrated with the processor 801. When the memory 802 is a device independent of the processor 801, the electronic device 800 may further include:
a bus 803 for connecting the processor 801 and the memory 802. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. Buses may be classified as address buses, data buses, control buses, etc., but do not represent only one bus or type of bus.
Alternatively, in a specific implementation, if the memory 802 and the processor 801 are integrated into a chip, the memory 802 and the processor 801 may communicate through an internal interface.
An embodiment of the present application further provides a vehicle, including: an electronic brake pedal and any one of the possible electronic devices in the embodiment shown in fig. 8.
The electronic brake pedal is electrically connected with a brake system of the vehicle to control the brake system to realize vehicle braking, and feedback force in the braking process is fed back to a user.
Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium may include: various media that can store program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and in particular, the computer-readable storage medium stores program instructions for the methods in the above method embodiments.
An embodiment of the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements the method in the foregoing method embodiments.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (11)

1. An electronic brake pedal adjustment method, comprising:
acquiring operation characteristic parameters of an electronic brake pedal;
determining and outputting a characteristic diagram to be adjusted according to the operating characteristic parameters;
acquiring an adjusting instruction input by a user, wherein the adjusting instruction is used for editing and adjusting the characteristic diagram to be adjusted;
determining a target characteristic curve of the electronic brake pedal according to the adjusting instruction so that the operation feeling of the electronic brake pedal meets the individual requirement of the user;
if the operating characteristic parameter includes: a set of multi-dimensional property arrays, the feature elements of each array in the set of multi-dimensional property arrays comprising: deceleration, maximum pedal force, minimum pedal force, and current pedal force;
correspondingly, the determining and outputting the characteristic diagram to be adjusted according to the operation characteristic parameters includes:
determining a first upper limit curve of pedal force according to the deceleration and the maximum pedal force in each of the arrays;
determining a first lower limit curve of pedal force based on the deceleration and the minimum pedal force in each of the arrays;
determining a first current characteristic of pedal force based on said deceleration and said current pedal force in each of said arrays;
and outputting the first upper limit curve, the first lower limit curve and the first current characteristic curve on an interactive interface.
2. The electronic brake pedal adjustment method of claim 1, wherein the adjustment command includes a global offset command, and the obtaining of the user-input adjustment command includes:
acquiring the integral offset instruction input by the user through a preset operation mode;
correspondingly, the determining the target characteristic curve of the electronic brake pedal according to the adjusting instruction comprises the following steps:
shifting the entirety of the first current characteristic curve to the first upper limit curve or the first lower limit curve by a first preset amplitude according to the overall shifting command, so as to determine a first target characteristic curve of pedal force, wherein the target characteristic curve comprises the first target characteristic curve.
3. The electronic brake pedal adjustment method according to claim 1 or 2, wherein the adjustment instruction includes a local adjustment instruction, and the acquiring of the adjustment instruction input by the user includes:
acquiring the local adjusting instruction input by the user through a preset operation mode;
correspondingly, the determining the target characteristic curve of the electronic brake pedal according to the adjusting instruction comprises the following steps:
and according to at least one adjusting interval corresponding to the local adjusting instruction, performing offset adjustment on at least one curve segment of the first current characteristic curve between the first upper limit curve and the first lower limit curve by a second preset amplitude so as to determine a second target characteristic curve of the pedal force, wherein the target characteristic curve comprises the second target characteristic curve.
4. The electronic brake pedal adjustment method according to claim 1, wherein the operating characteristic parameters, if any, include: a set of multi-dimensional property arrays, the feature elements of each array in the set of multi-dimensional property arrays comprising: deceleration, maximum pedal travel, minimum pedal travel, and current pedal travel;
correspondingly, the determining and outputting the characteristic diagram to be adjusted according to the operation characteristic parameters includes:
determining a second upper limit curve of pedal travel according to the deceleration and the maximum pedal travel in each of the arrays;
determining a second lower limit curve of the pedal stroke according to the deceleration and the minimum pedal stroke in each array;
determining a second current characteristic of the pedal travel from the deceleration and the current pedal travel in each of the arrays;
and outputting the second upper limit curve, the second lower limit curve and the second current characteristic curve on an interactive interface.
5. The electronic brake pedal adjustment method of claim 4, wherein the adjustment command includes a global offset command, and the obtaining of the user-input adjustment command includes:
acquiring the integral offset instruction input by the user through a preset operation mode;
correspondingly, the step of determining the target characteristic curve of the electronic brake pedal according to the adjusting instruction comprises the following steps:
shifting the whole of the second current characteristic curve to the second upper limit curve or the second lower limit curve by a first preset amplitude according to the whole shifting command so as to determine a third target characteristic curve of the pedal stroke, wherein the target characteristic curve comprises the third target characteristic curve.
6. The electronic brake pedal adjustment method according to claim 4 or 5, wherein the adjustment command includes a local adjustment command, and the acquiring of the adjustment command input by the user includes:
acquiring the local adjusting instruction input by the user through a preset operation mode;
correspondingly, the determining the target characteristic curve of the electronic brake pedal according to the adjusting instruction comprises the following steps:
and performing offset adjustment on at least one curve segment of the second current characteristic curve between the second upper limit curve and the second lower limit curve by a fourth preset amplitude according to at least one adjustment interval corresponding to the local adjustment instruction, so as to determine a fourth target characteristic curve of the pedal stroke, wherein the target characteristic curve comprises the fourth target characteristic curve.
7. The electronic brake pedal adjustment method according to any one of claims 1 to 2, further comprising:
acquiring an operation instruction input by the user;
and determining control parameters of the brake system according to the operation command and the target characteristic curve.
8. An electronic brake pedal adjustment device, comprising:
the acquisition module is used for acquiring the operating characteristic parameters of the electronic brake pedal;
the processing module is used for determining and outputting a characteristic diagram to be adjusted according to the operation characteristic parameters;
the acquisition module is further used for acquiring an adjusting instruction input by a user, and the adjusting instruction is used for editing and adjusting the characteristic diagram to be adjusted;
the processing module is further used for determining a target characteristic curve of the electronic brake pedal according to the adjusting instruction so that the operation feeling of the electronic brake pedal meets the individual requirements of the user;
if the operating characteristic parameter includes: a set of multi-dimensional property arrays, the feature elements of each array in the set of multi-dimensional property arrays comprising: deceleration, maximum pedal force, minimum pedal force, and current pedal force;
the processing module is used for determining a first upper limit curve of pedal force according to the deceleration and the maximum pedal force in each array; determining a first lower limit curve of pedal force based on the deceleration and the minimum pedal force in each of the arrays; determining a first current characteristic of pedal force based on said deceleration and said current pedal force in each of said arrays; and outputting the first upper limit curve, the first lower limit curve and the first current characteristic curve on an interactive interface.
9. An electronic device, comprising: a processor and a memory;
the memory for storing a computer program for the processor;
the processor is configured to execute the electronic brake pedal adjustment method of any one of claims 1 to 7 via execution of the computer program.
10. A vehicle, characterized by comprising: an electronic brake pedal and the electronic device of claim 9;
the electronic brake pedal is electrically connected with a brake system of the vehicle to control the brake system to realize vehicle braking, and feedback force in the braking process is fed back to a user.
11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the electronic brake pedal adjustment method according to any one of claims 1 to 7.
CN202110956726.2A 2021-08-19 2021-08-19 Electronic brake pedal adjustment method, device, apparatus, medium, and program product Active CN113479176B (en)

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