Active adjusting method and system for brake pedal mode and application

Abstract

The invention belongs to the technical field of automobile braking, and provides an active adjusting method and system for the mode of a brake pedal and application, and the method comprises the steps that a vibration database is constructed, and preset vibration threshold values under different vehicle working conditions and corresponding brake pedal mode adjusting strategies are stored in the vibration database; a brake pedal vibration signal is collected in real time and processed into a vibration characteristic value, and the vibration characteristic value is compared with a preset vibration threshold value in a vibration database under the current working condition; based on the comparison result, calling a corresponding modal adjustment strategy, generating an adjustment instruction and executing the adjustment instruction to actively change the mass distribution of the brake pedal and dynamically shift the intrinsic mode of the brake pedal; and the steps are executed circularly, and self-adaptive vibration suppression is carried out under different working conditions. Resonance is avoided by dynamically adjusting the mode of the brake pedal, and vibration suppression and full-working-condition adaptation can be achieved.

Description

Technical Field

[0001] This application relates to the field of automotive braking technology, and in particular to an active adjustment method, system and application of brake pedal modes. Background Technology

[0002] In the field of new energy vehicles, the vibration characteristics of powertrain components such as motors and reducers differ significantly from those of traditional fuel vehicles. Their wide-frequency vibrations are easily transmitted to the brake pedal through the transmission system. As a key control component, if the inherent modes of the brake pedal are coupled with the vibration frequencies of excitation sources such as the powertrain and chassis, resonance can occur. This not only causes noticeable pedal vibration but also generates vibration feedback through the driver's foot, reducing driving comfort. In the long term, it may even affect the driver's judgment accuracy in braking operations, posing a safety hazard.

[0003] Currently, existing technologies for brake pedal vibration suppression mainly focus on passive optimization solutions, such as:

[0004] 1. By attaching damping materials such as butyl rubber to the surface of the brake pedal body, the viscoelasticity of the material is used to convert the mechanical energy of vibration into heat energy to weaken the vibration. However, its vibration reduction parameters are fixed and cannot be adapted to the variable excitation frequency of new energy vehicles; moreover, it is prone to aging and debonding in high temperature and high humidity environments, resulting in a rapid decline in vibration reduction effect. Regular maintenance and replacement are required, and its applicability to all working conditions is poor.

[0005] 2. By optimizing the shape, wall thickness, and reinforcing rib layout of the pedal bracket through finite element analysis, the structural stiffness can be improved to change the natural frequency of the pedal, thereby avoiding the excitation source frequency. However, this solution is designed based on specific working conditions and is difficult to adapt to the excitation changes under different driving modes and loads of new energy vehicles; increasing stiffness often comes with increased weight and structural complexity, and its adaptability is limited by installation space constraints.

[0006] 3. Existing technology three adjusts the pedal mode by pre-setting a fixed mass block to avoid the excitation source frequency. Its disadvantage is that once the position and mass parameters of the mass block are determined, they cannot be changed. It can only match a single vibration frequency under specific working conditions and cannot cope with the dynamic changes in the excitation source frequency under different vehicle speeds and loads of new energy vehicles.

[0007] In summary, while existing passive solutions can mitigate vibration under specific conditions, their fixed vibration reduction parameters, reliance on specific operating conditions, and lack of dynamic adjustment capabilities make it difficult to meet the adaptive vibration suppression requirements of new energy vehicles under all operating conditions.

[0008] Based on this, existing technologies have proposed some active optimization schemes. For example, patent application CN120716644A discloses an active damping brake pedal, a brake pedal control method, and an automobile. The brake pedal includes a base, a pedal body, a transmission mechanism, and a drive mechanism. The pedal body is rotatably mounted on the base; the transmission mechanism is mounted on the base, with its input and output ends coaxially arranged, and the input end fixedly connected to the output end of the drive mechanism, while the output end of the transmission mechanism is fixedly connected to the pedal body; the drive mechanism is mounted on the base, with its output end fixedly connected to the input end of the transmission mechanism. The drive mechanism outputs torque to the pedal body through the transmission mechanism to provide damping to the pedal body. This method, by setting the transmission mechanism with coaxial input and output ends, ensures that the force is always along the same axial direction during torque transmission, resulting in smoother transmission and effectively reducing bouncing and vibration during rotation. However, this method deals with the force feedback characteristics of the pedal under manual pedaling, actively applying a torque to counteract the pedaling motion. It cannot directly solve or optimize the pedal vibration problem caused by external excitation. Summary of the Invention

[0009] In view of the shortcomings of the prior art, the present invention provides an active adjustment method, system and application for brake pedal mode, which avoids resonance by dynamically adjusting the brake pedal mode, and can achieve vibration suppression and adaptation to all working conditions.

[0010] To achieve the above and related objectives, the present invention adopts the following technical solution:

[0011] The first aspect of this invention provides an active adjustment method for brake pedal modes, comprising the following steps:

[0012] Step S100: Construct a vibration database, which stores preset vibration thresholds for different vehicle operating conditions and their corresponding brake pedal mode adjustment strategies.

[0013] Step S200: The brake pedal vibration signal is collected in real time and processed into vibration feature values. The vibration feature values ​​are compared with the preset vibration threshold in the vibration database under the current working condition.

[0014] Step S300: Based on the comparison results, the corresponding modal adjustment strategy is invoked, adjustment instructions are generated and executed to actively change the mass distribution of the brake pedal and dynamically shift its inherent mode.

[0015] Step S400: Repeat steps S200 to S300 to perform adaptive vibration suppression under different working conditions.

[0016] Furthermore, the method also includes: pre-setting a receiving cavity inside the brake pedal and filling it with iron sand, and installing multiple electromagnets at different positions on the brake pedal.

[0017] Furthermore, in step S100, the modal adjustment strategy includes the correspondence between a preset vibration threshold and one or more target electromagnets, as well as the current flow rate set for the target electromagnets.

[0018] Furthermore, in step S200, the vibration characteristic value is the root mean square value of the vibration signal.

[0019] Furthermore, step S300 also includes: keeping all electromagnets de-energized when the vibration characteristic value does not exceed the preset vibration threshold.

[0020] Furthermore, step S300 also includes: when the vibration characteristic value exceeds the preset vibration threshold, calling the corresponding modal adjustment strategy, sending an adjustment command to the corresponding target electromagnet, and the target electromagnet generates magnetic force after being energized, attracting and fixing the iron sand in the accommodating cavity to change the mass distribution of the brake pedal.

[0021] A second aspect of the present invention provides an active adjustment system for brake pedal modes, comprising:

[0022] The vibration database construction module is used to build a vibration database, which stores preset vibration thresholds for different vehicle operating conditions and their corresponding brake pedal mode adjustment strategies.

[0023] The signal acquisition and processing module is used to acquire brake pedal vibration signals in real time and process them into vibration characteristic values, and compare the vibration characteristic values ​​with preset vibration thresholds in the vibration database under the current working conditions.

[0024] The adjustment decision and execution module is used to call the corresponding modal adjustment strategy based on the comparison results, generate adjustment commands and execute them to actively change the mass distribution of the brake pedal and dynamically shift its inherent mode.

[0025] The cyclic feedback module is used to cyclically call the signal acquisition and processing module and the adjustment decision and execution module to perform adaptive vibration suppression under different operating conditions.

[0026] Furthermore, it also includes a mass distribution adjustment mechanism, comprising a receiving cavity disposed inside the brake pedal and filled with iron sand, and multiple electromagnets disposed at different positions on the brake pedal.

[0027] A third aspect of the present invention provides a computer-readable storage medium having computer-readable instructions stored thereon, which, when executed by a computer processor, cause the computer to perform the above-described active adjustment method for brake pedal modes.

[0028] A fourth aspect of the present invention provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above-described active adjustment method for brake pedal modes.

[0029] The beneficial technical effects of this invention are as follows:

[0030] This invention actively adjusts the mass distribution of the brake pedal to alter its inherent modes, thereby avoiding the frequencies of vehicle body excitation sources, preventing resonance, and achieving vibration suppression. Unlike passive optimization schemes such as vibration isolation and absorption in transmission systems, this invention actively alters the inherent mass properties of the brake pedal to mitigate vibration.

[0031] This invention has a fast response speed and can dynamically adjust the brake pedal mode in real time according to changes in operating conditions. Furthermore, through a preset vibration database, this invention can achieve full operating condition adaptation and can cope with various driving scenarios.

[0032] This invention achieves closed-loop, adaptive vibration suppression loops that cover all operating conditions through cyclic feedback.

[0033] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0034] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. In the drawings:

[0035] Figure 1 This is a flowchart of the active adjustment method for brake pedal modes in this application;

[0036] Figure 2 This is a flowchart of another exemplary active adjustment method of this application;

[0037] Figure 3 This is a schematic diagram of an exemplary structure of the brake pedal of this application;

[0038] Figure 4 This is another exemplary structural diagram of the brake pedal of this application;

[0039] Figure 5 This is a framework diagram of the active adjustment system for the brake pedal modes of this application;

[0040] Figure 6 A schematic diagram of the structure of a computer system suitable for an embodiment of this application is shown.

[0041] Figure Labels

[0042] 1: Vibration sensor; 2: Sensor mounting slot; 3: Sensor mounting limit block; 4: First electromagnet; 5: First plastic end cap; 6: First magnetic shield; 7: Iron sand; 8: Second electromagnet; 9: Second plastic end cap; 10: Second magnetic shield; 11: Wire harness; 12: Wiring trough. Detailed Implementation

[0043] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should be understood that certain features of the invention (described in the context of separate embodiments for clarity) may also be provided in a single embodiment. Conversely, multiple features of the invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or, where appropriate, in any other described embodiment of the invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The invention is further illustrated below by specific examples; however, it should be noted that the specific process conditions and results described in the embodiments of the invention are merely illustrative and should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be covered within the scope of protection of the invention.

[0044] Please see Figure 1 The flowchart of the active adjustment method for brake pedal modes in this application is described in detail below:

[0045] Step S100: Construct a vibration database, which stores preset vibration thresholds for different vehicle operating conditions and their corresponding brake pedal modal adjustment strategies.

[0046] Specifically, in combination Figure 2This application, through extensive preliminary experiments and simulations, completes the setting and initialization of vibration thresholds and constructs a vibration database. First, this application identifies the main vibration excitation sources of new energy vehicles, such as the vibration frequency of the drive motor at different speeds, the gear meshing frequency of the reducer, and the road excitation transmitted from the chassis. This application divides the vehicle's operating state into various conditions, including low-speed conditions (vehicle speed less than 30 km / h), high-speed conditions (vehicle speed greater than 80 km / h), fully loaded conditions, and unloaded conditions. Then, under different conditions, this application collects raw vibration signals through vibration sensors installed on the brake pedal and processes them into characteristic values ​​that reflect vibration intensity, namely the root mean square (RMS) value. The RMS value can effectively characterize the average energy level of vibration over a period of time. This application analyzes the vibration RMS values ​​of typical frequencies of excitation sources such as the powertrain and chassis under different operating conditions of new energy vehicles and sets one or more preset vibration thresholds. The preset vibration thresholds can be used to determine whether the brake pedal may resonate. Next, for each operating condition and its preset vibration threshold, this application pre-calculates and sets the corresponding brake pedal modal adjustment strategy, which includes the correspondence between the preset vibration threshold and one or more target electromagnets, as well as the current flow rate set for the target electromagnets. Finally, this application pre-stores this mapping relationship between different operating conditions, preset vibration thresholds, and modal adjustment strategies into the control system in the form of a data table or algorithm to construct a vibration database, so as to facilitate the control system to perform fast query and matching during real-time operation.

[0047] Specifically, before performing step S100, this application requires pre-setting a receiving cavity inside the brake pedal and filling it with iron sand, installing multiple electromagnets at different positions on the brake pedal, and installing a vibration sensor on the brake pedal. More specifically, the receiving cavity in this application is a closed cavity pre-embedded inside the brake pedal body, and its shape, volume, and position are obtained through simulation calculations to ensure that the mass distribution and moment of inertia of the brake pedal can be effectively changed. The iron sand in this application is preferably coarse iron sand, which has good fluidity, high specific gravity, and can be controlled by magnetic force. In a free and loose state, the iron sand vibrates with the brake pedal, and after being attracted and fixed, it becomes part of the mass of the brake pedal. The multiple electromagnets in this application are arranged at key modal influence points, such as near the support end and the pedal end, based on the structural modal and vibration mode analysis of the brake pedal, and each electromagnet can be controlled independently. The vibration sensor in this application is preferably a triaxial accelerometer, which is integrated on the surface or base of the brake pedal to ensure that the sensor can collect brake pedal vibration data in real time.

[0048] More specifically, such as Figure 3 and Figure 4As shown in the example, during installation, the vibration sensor 1 of the brake pedal of this application is inserted into the sensor mounting slot 2. The shape of the slot matches the shell of the vibration sensor 1 to provide radial positioning. The sensor mounting limiting block 3 is fixed to one side of the sensor mounting slot 2 by fasteners to provide axial compression, preventing the vibration sensor 1 from loosening during vibration, ensuring a stable connection between the vibration sensor 1 and the brake pedal, and ensuring accurate transmission of vibration signals. The first electromagnet 4 and the second electromagnet 8 of this application generate a strong magnetic field when energized, and the magnetic field disappears when de-energized. The first magnetic shield 6 and the second magnetic shield 10 can be made of highly permeable magnetic material and are wrapped around the electromagnets to constrain and guide the magnetic lines of force, so that the magnetic field is concentrated on the iron sand in the accommodating cavity. The first plastic end cap 5 and the second plastic end cap 9 of this application can be made of non-magnetic material and are installed on the outside of the magnetic shield to provide sealing, protection, and installation positioning.

[0049] More specifically, such as Figure 4 As shown, the iron sand 7 in this application is filled in a pre-fabricated cavity inside the pedal arm. When the electromagnet is energized, the iron sand 7 near it is magnetized and attracted and fixed, becoming part of the concentrated mass of the pedal; when the power is off, the iron sand returns to a free-flowing state. By controlling the on and off states of the electromagnets at different positions, the mass distribution can be reconstructed. The brake pedal of this application also includes a wiring harness 11, which includes wires for powering and communicating with the vibration sensor 1, the first electromagnet 4, and the second electromagnet 8; and a wiring groove 12, which is a groove machined on the outer surface of the first magnetic shield 6, in which the wiring harness 11 is neatly embedded.

[0050] Step S200: The brake pedal vibration signal is collected in real time and processed into vibration feature values. The vibration feature values ​​are then compared with the preset vibration threshold in the vibration database under the current operating conditions.

[0051] Specifically, the vibration characteristic value of this application is the root mean square value of the vibration signal.

[0052] Specifically, this application performs real-time vibration monitoring by acquiring vibration signals in real time through vibration sensors. These signals include time-domain waveforms of amplitude, phase, and time. Then, this application calculates the root mean square value based on these vibration signals.

[0053] Step S300: Based on the comparison results, the corresponding modal adjustment strategy is invoked, adjustment instructions are generated and executed to actively change the mass distribution of the brake pedal and dynamically shift its inherent mode.

[0054] Specifically, when the vibration characteristic value does not exceed the preset vibration threshold, all electromagnets are kept de-energized. When the vibration characteristic value exceeds the preset vibration threshold, the corresponding modal adjustment strategy is invoked, and an adjustment command is sent to the corresponding target electromagnet. After the target electromagnet is energized, it generates magnetic force, attracts and fixes the iron sand in the accommodating cavity, thereby changing the mass distribution of the brake pedal.

[0055] Specifically, in combination Figure 2 The assembly controller of this application receives the vibration characteristic value from the acceleration signal acquisition module and compares it with a preset vibration threshold. When the monitored vibration characteristic value is less than or equal to the preset vibration threshold, the assembly controller determines that the current vibration level is within an acceptable range, with no risk of resonance, and no active adjustment is required. At this time, the assembly controller does not send any adjustment command to the electromagnet current flow controller, no current flows through any electromagnets, the iron filings are in a free-flowing, loose state within the accommodating cavity, and the brake pedal maintains its original intrinsic mode. More specifically, when the monitored vibration characteristic value is greater than the preset vibration threshold, the assembly controller, based on the currently identified vehicle operating condition, queries and invokes a modal adjustment strategy matching the operating condition from a pre-built vibration database. The assembly controller converts this strategy into specific adjustment commands and sends them to the electromagnet current flow controller. The electromagnet current flow controller drives the designated target electromagnet to be energized, causing it to generate a strong magnetic field. The magnetic field penetrates the magnetic shield and attracts and fixes the coarse iron sand in the vicinity of the magnetic field to a specific position on the inner wall of the cavity. This instantly changes the mass distribution and center of mass position inside the brake pedal, thereby dynamically shifting its natural mode. This makes the new natural mode far away from the current external excitation frequency, thus avoiding or suppressing resonance at its source.

[0056] Step S400: Repeat steps S200 to S300 to perform adaptive vibration suppression under different working conditions.

[0057] Specifically, as vehicle operating conditions change (such as increased vehicle speed or changed load), the vibration sensor continuously monitors the brake pedal vibration signal in a loop. The assembly controller repeats the threshold judgment and electromagnet control steps based on the new monitoring results, dynamically switching the fixed position of the iron shot to achieve modal adaptive adjustment and vibration suppression under all operating conditions.

[0058] The present invention will be described in detail below through specific examples and embodiments. It should also be understood that the following embodiments are only for specific illustration of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made by those skilled in the art based on the above description of the present invention are within the scope of protection of the present invention. The specific process parameters, etc., in the following examples are merely examples within a suitable range; that is, those skilled in the art can make appropriate selections within the appropriate range based on the description herein, and are not intended to be limited to the specific values ​​in the examples below.

[0059] Example 1

[0060] The active adjustment method for the brake pedal mode in this embodiment is as follows:

[0061] 1) A triaxial accelerometer is installed on the upper end of the brake pedal base to collect the vibration signal of the brake pedal base in real time;

[0062] 2) Based on the time-domain statistical feature method, the above vibration signal is processed into vibration RMS value;

[0063] 3) The assembly controller compares the vibration RMS value with the preset vibration threshold, calls the corresponding modal adjustment strategy based on the vibration database, and generates adjustment instructions;

[0064] 4) Based on the above adjustment instructions, the assembly controller transmits signals to the electromagnet current flow control, controls the magnetic force of the first and second electromagnets on the coarse iron sand, dynamically changes the mass distribution of the brake pedal, adjusts its natural mode, avoids resonance with the vehicle body excitation source, and simultaneously achieves vibration suppression.

[0065] 5) As the vehicle's operating conditions change, the triaxial acceleration sensor continuously and cyclically collects the vibration signal of the brake pedal. The assembly controller repeats the threshold judgment and electromagnet control steps based on the new monitoring results, dynamically switching the fixed position of the iron shot to achieve modal adaptive adjustment and vibration suppression under all operating conditions.

[0066] In this embodiment, the brake pedal is securely mounted to the front bulkhead of the vehicle body via a base at its bottom using four fasteners.

[0067] Please see Figure 5 This is a framework diagram of the active adjustment system 500 for brake pedal modes according to this application, including:

[0068] Vibration database construction module 510 is used to construct a vibration database, which stores preset vibration thresholds under different vehicle operating conditions and their corresponding brake pedal mode adjustment strategies.

[0069] The signal acquisition and processing module 520 is used to acquire the brake pedal vibration signal in real time and process it into vibration feature values, and compare the vibration feature values ​​with the preset vibration threshold in the vibration database under the current working condition.

[0070] The adjustment decision and execution module 530 is used to call the corresponding modal adjustment strategy based on the comparison results, generate adjustment instructions and execute them to actively change the mass distribution of the brake pedal and dynamically shift its inherent mode.

[0071] The cyclic feedback module 540 is used to cyclically call the signal acquisition and processing module and the adjustment decision and execution module to perform adaptive vibration suppression under different operating conditions.

[0072] Specifically, this application also includes a mass distribution adjustment mechanism, comprising a receiving cavity disposed inside the brake pedal and filled with iron sand, and multiple electromagnets disposed at different positions on the brake pedal.

[0073] It should be noted that the active adjustment system for brake pedal mode provided in the above embodiments and the active adjustment method for brake pedal mode provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments and will not be repeated here. In practical applications, the active adjustment system for brake pedal mode provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the system can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0074] Embodiments of this application also provide a computer device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by the one or more processors, cause the computer device to implement the active adjustment method for brake pedal modes provided in the above embodiments.

[0075] Figure 6 A schematic diagram of the structure of a computer system suitable for an embodiment of this application is shown. It should be noted that... Figure 6 The computer system 600 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0076] like Figure 6 As shown, the computer system 600 includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage section 608 into a random access memory (RAM) 603, such as performing the methods described in the above embodiments. The RAM 603 also stores various programs and data required for system operation. The CPU 601, ROM 602, and RAM 603 are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604. The following components are connected to the I / O interface 605: an input section 606 including a keyboard, mouse, etc.; an output section 607 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (local area network) card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A driver 610 is also connected to the I / O interface 605 as needed. Removable media 611, such as disks, optical discs, magneto-optical discs, semiconductor memories, etc., are installed on drive 610 as needed so that computer programs read from them can be installed into storage section 608 as needed.

[0077] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer tool programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 609, and / or installed from removable medium 611. When the computer program is executed by central processing unit (CPU) 601, it performs various functions defined in the system of this application.

[0078] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, flash memory, an optical fiber, a portable compact disk read-only memory, an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. Computer programs contained on computer-readable media can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0079] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0080] The units described in the embodiments of this application can be implemented by tools or by hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the unit itself.

[0081] Another aspect of this application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a computer's processor, causes the computer to perform the active adjustment method for brake pedal modes as described above. This computer-readable storage medium may be included in the computer device described in the above embodiments, or it may exist independently and not incorporated into the computer device.

[0082] Another aspect of this application provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the active adjustment method for brake pedal modes provided in the various embodiments described above.

[0083] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method for actively adjusting brake pedal modes, characterized in that, Includes the following steps: Step S100: Construct a vibration database, which stores preset vibration thresholds for different vehicle operating conditions and their corresponding brake pedal mode adjustment strategies. Step S200: The brake pedal vibration signal is collected in real time and processed into vibration feature values. The vibration feature values ​​are compared with the preset vibration threshold in the vibration database under the current working condition. Step S300: Based on the comparison results, the corresponding modal adjustment strategy is invoked to generate and execute adjustment instructions in order to actively change the mass distribution of the brake pedal and dynamically shift its inherent mode. Step S400: Repeat steps S200 to S300 to perform adaptive vibration suppression under different operating conditions.

2. The active adjustment method according to claim 1, characterized in that, The method further includes: pre-setting a receiving cavity inside the brake pedal and filling it with iron sand, and installing multiple electromagnets at different positions on the brake pedal.

3. The active adjustment method according to claim 2, characterized in that, In step S100, the modal adjustment strategy includes the correspondence between the preset vibration threshold and one or more target electromagnets, and the current flow rate set for the target electromagnet.

4. The active adjustment method according to claim 3, characterized in that, In step S200, the vibration characteristic value is the root mean square value of the vibration signal.

5. The active adjustment method according to claim 2, characterized in that, Step S300 further includes: keeping all electromagnets de-energized when the vibration characteristic value does not exceed the preset vibration threshold.

6. The active adjustment method according to claim 5, characterized in that, Step S300 further includes: when the vibration characteristic value exceeds the preset vibration threshold, calling the corresponding modal adjustment strategy, sending the adjustment command to the corresponding target electromagnet, and the target electromagnet generates magnetic force after being energized, attracting and fixing the iron sand in the accommodating cavity to change the mass distribution of the brake pedal.

7. An active adjustment system for brake pedal modes, characterized in that, include: The vibration database construction module is used to build a vibration database, which stores preset vibration thresholds for different vehicle operating conditions and their corresponding brake pedal mode adjustment strategies. The signal acquisition and processing module is used to acquire brake pedal vibration signals in real time and process them into vibration feature values, and compare the vibration feature values ​​with preset vibration thresholds in the vibration database under the current operating conditions. The adjustment decision and execution module is used to call the corresponding modal adjustment strategy based on the comparison results, generate adjustment instructions and execute them to actively change the mass distribution of the brake pedal and dynamically shift its inherent mode. The cyclic feedback module is used to cyclically call the signal acquisition and processing module and the adjustment decision and execution module to perform adaptive vibration suppression under different operating conditions.

8. The active adjustment system according to claim 7, characterized in that, It also includes a mass distribution adjustment mechanism, comprising a receiving cavity disposed inside the brake pedal and filled with iron sand, and multiple electromagnets disposed at different positions on the brake pedal.

9. A computer-readable storage medium, characterized in that, It stores computer-readable instructions, which, when executed by the computer's processor, cause the computer to perform the active adjustment method of the brake pedal mode as described in any one of claims 1 to 6.

10. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, when the processor executes the computer program, it implements the steps of the active adjustment method for the brake pedal mode according to any one of claims 1 to 6.

Images