Control method for optimizing dragging of brake calipers and related products

Abstract

The invention relates to a control method for optimizing dragging of brake calipers and a related product. The current vehicle state is obtained by collecting vehicle driving data. And when the vehicle is in the braking and static state, the current vehicle weight, the slope value of the current vehicle and the tire radius of the current vehicle are obtained, and the minimum braking pressure, namely the minimum braking pressure meeting the parking requirement, of the current vehicle is determined through formula calculation. After the minimum brake pressure of the current vehicle is obtained, the maximum pressure buildup pressure of the current vehicle can be obtained according to the obtained slope value of the current vehicle and the environment temperature value of the current vehicle. The maximum built-up pressure is used for limiting the maximum brake pressure which can be built by the vehicle hydraulic brake system. No matter how the driver steps on the brake pedal, the brake pressure does not exceed the maximum build-up pressure, so that the dragging torque of the brake calipers is optimized under the condition that the automobile meets static braking, and the requirements of consumers for automobile performance are met.

Description

Technical Field

[0001] This invention relates to the technical field of automotive braking, and in particular to a control method for optimizing brake caliper drag and related products. Background Technology

[0002] With the development of the automotive industry, consumers have increasingly higher demands for vehicle performance. Vehicle power, fuel economy, and driving comfort are all important considerations. Among these, the safety of the braking system is a crucial component of vehicle safety. Strict safety regulations require braking systems to operate stably and reliably.

[0003] Currently, automobiles typically exhibit brake caliper drag torque. This drag torque is particularly noticeable during static braking, and increases significantly with higher braking pressure. Caliper drag torque negatively impacts vehicle performance. For example, it can lead to power loss and increased fuel consumption, thus hindering the fulfillment of consumer demands for optimal vehicle performance. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an optimized control method and related products for brake caliper drag, which solves the problem that there is a brake caliper drag torque when a car is statically braking, thus failing to meet consumers' performance requirements for the car.

[0005] To achieve the above and other related objectives, the present invention provides a control method for optimizing brake caliper drag, the control method comprising:

[0006] Determine the current vehicle status, that is, determine whether the current vehicle is braking and stationary;

[0007] If so, determine the current minimum braking pressure of the vehicle;

[0008] The maximum build-up pressure of the current vehicle is determined based on the minimum braking pressure, so that the driver's target braking pressure does not exceed the maximum build-up pressure.

[0009] Optionally, before determining the current vehicle status, the method further includes:

[0010] Obtain vehicle driving data;

[0011] The current vehicle status is determined based on the vehicle driving data.

[0012] Optionally, the vehicle driving data includes the current wheel speed pulse sensing signal, the current vehicle speed, and the current brake pedal opening.

[0013] Optionally, determining the current vehicle status based on the vehicle driving data includes:

[0014] When the current brake pedal opening is detected to be higher than the preset opening value, it is determined that the vehicle is currently in a braking state.

[0015] When the current vehicle speed is detected to be lower than the preset speed value and the current wheel speed pulse sensor signal frequency is lower than the preset frequency value, it is determined that the current vehicle is stationary.

[0016] Optionally, determining the minimum braking pressure of the current vehicle includes:

[0017] Get the current vehicle weight, the current slope of the vehicle, and the current tire radius of the vehicle;

[0018] The minimum braking pressure of the current vehicle is calculated based on the current vehicle weight, the current slope of the vehicle, and the current tire radius. The minimum braking pressure of the current vehicle is P=W*R*S.

[0019] Where W is the vehicle's full load mass in kilograms (kg); R is the vehicle's tire radius in meters (m); and S is the slope of the vehicle in percentage (%).

[0020] Optionally, determining the current vehicle's maximum pressure build-up based on the minimum braking pressure includes:

[0021] Obtain the current slope value and the current ambient temperature value of the vehicle;

[0022] The first pressure deviation coefficient and the second pressure deviation coefficient are calculated by referring to tables based on the current slope value and the current ambient temperature value of the vehicle.

[0023] The maximum pressure build-up pressure of the current vehicle = the minimum braking pressure of the current vehicle * the first pressure deviation coefficient * the second pressure deviation coefficient.

[0024] Optionally, the control method further includes:

[0025] Determine the current vehicle status, that is, determine whether the current vehicle is braking and stationary;

[0026] If not, then execute the normal pressure build-up strategy;

[0027] The normal pressure-building strategy is that the current vehicle's pressure build-up completely follows the driver's target braking pressure.

[0028] The present invention also provides a control system for optimizing brake caliper drag, the control system comprising:

[0029] The information acquisition module is used to acquire relevant vehicle data, including current wheel speed pulse sensor signal, current vehicle speed, current brake pedal opening, current vehicle weight, current vehicle slope, current vehicle tire radius, and current vehicle ambient temperature.

[0030] The signal processing module is used to process and judge the data after receiving relevant data from the vehicle, and to determine the maximum pressure build-up.

[0031] The pressure control module is used to limit the maximum braking pressure of the vehicle's hydraulic braking system so that the driver's target braking pressure does not exceed the maximum build-up pressure.

[0032] The present invention also provides a machine-readable storage medium having a machine-executable program stored thereon, wherein the machine-executable program, when executed by a processor, implements any of the above-described methods for controlling the optimized brake caliper drag.

[0033] The present invention further provides a computer device, including a memory, a processor, and a machine-executable program stored in the memory and running on the processor, wherein the processor, when executing the machine-executable program, implements any of the above-described methods for controlling optimized brake caliper drag.

[0034] In a method for optimizing brake caliper drag control according to the present invention, vehicle driving data is collected to obtain the current vehicle state. When the vehicle is braking and stationary, the current vehicle weight, the current slope value, and the current tire radius are obtained. The minimum braking pressure of the current vehicle, i.e., the minimum braking pressure that meets parking requirements, is calculated using a formula. After obtaining the minimum braking pressure, the maximum brake build-up pressure of the current vehicle can be obtained based on the current slope value and the current ambient temperature value. The maximum brake build-up pressure limits the maximum braking pressure that the vehicle's hydraulic braking system can build up. No matter how the driver depresses the brake pedal, the braking pressure will not exceed the maximum brake build-up pressure, thus optimizing the drag torque of the brake caliper while meeting static braking requirements, thereby satisfying consumer demands for vehicle performance. Attached Figure Description

[0035] Figure 1 This is a flowchart of an embodiment of the control method for optimizing brake caliper drag according to the present invention;

[0036] Figure 2 This is a schematic diagram of a machine-readable storage medium according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of a computer device according to an embodiment of the present invention. Detailed Implementation

[0038] The following reference Figures 1-3 This invention describes an optimized brake caliper drag control method and related products.

[0039] like Figure 1 As shown, this embodiment of the invention provides a control method for optimizing brake caliper drag, the control method including:

[0040] Step S1: Acquire vehicle driving data. Vehicle driving data includes the current wheel speed pulse sensor signal, the current vehicle speed, and the current brake pedal opening.

[0041] Step S2: Determine the current vehicle status based on the vehicle driving data. That is, determine whether the vehicle is currently braking and stationary. If yes, proceed to step S3; otherwise, proceed to step S4.

[0042] Furthermore, the current vehicle status is determined based on vehicle driving data, including:

[0043] When the current brake pedal opening is detected to be higher than the preset opening value, it is determined that the vehicle is currently in a braking state.

[0044] When the current vehicle speed is detected to be lower than the preset speed value and the current wheel speed pulse sensor signal frequency is lower than the preset frequency value, it is determined that the current vehicle is stationary.

[0045] It should be noted that the preset opening value, preset vehicle speed and preset frequency value mentioned above are all based on the setting of basic thresholds. The balanced thresholds obtained by combining real vehicle scenario testing and error redundancy design meet the relevant ISO standards for vehicles.

[0046] Step S3: Determine the minimum braking pressure for the current vehicle. This is the minimum braking pressure required to meet parking requirements.

[0047] Further, determine the minimum braking pressure of the current vehicle, including:

[0048] Get the current vehicle weight, the current slope of the vehicle, and the current tire radius of the vehicle;

[0049] The minimum braking pressure of the vehicle is calculated based on the current vehicle weight, the current slope of the vehicle, and the current tire radius.

[0050] Let P be the minimum braking pressure of the current vehicle. Then, the minimum braking pressure of the current vehicle is P = W * R * S.

[0051] Where W is the vehicle's full load mass in kilograms (kg); R is the vehicle's tire radius in meters (m); and S is the slope of the vehicle in percentage (%).

[0052] Step S4: Execute the normal pressure build-up strategy. The normal pressure build-up strategy involves the vehicle's current pressure build-up completely following the driver's target braking pressure to meet the driver's normal braking needs.

[0053] Step S5: After determining the minimum braking pressure of the current vehicle, determine the maximum brake build-up pressure of the current vehicle based on the minimum braking pressure, so that the driver's target braking pressure does not exceed the maximum brake build-up pressure. The driver's target braking pressure is the braking pressure obtained when the driver depresses the brake pedal.

[0054] Furthermore, the maximum pressure build-up pressure of the current vehicle is determined based on the minimum braking pressure, including:

[0055] Obtain the current slope value and the current ambient temperature value of the vehicle;

[0056] The first pressure deviation coefficient and the second pressure deviation coefficient are calculated by referring to tables based on the current slope value and the current ambient temperature value of the vehicle.

[0057] The current maximum build-up pressure of the vehicle = the current minimum braking pressure of the vehicle * the first pressure deviation coefficient * the second pressure deviation coefficient.

[0058] In summary, this application obtains the current vehicle status by collecting vehicle driving data. When the vehicle is braking and stationary, the current vehicle weight, the current slope value, and the current tire radius are obtained. The minimum braking pressure, i.e., the minimum braking pressure required to meet parking requirements, is then calculated using a formula. After obtaining the minimum braking pressure, the maximum brake build-up pressure is obtained based on the current slope value and the ambient temperature. The maximum brake build-up pressure limits the maximum braking pressure that the vehicle's hydraulic braking system can build up. Regardless of how the driver depresses the brake pedal, the braking pressure will not exceed the maximum brake build-up pressure, ensuring that the brake calipers do not experience drag torque under static braking conditions, thus meeting consumer demands for vehicle performance.

[0059] In theory, the maximum pressure build-up can be equal to the minimum braking pressure. However, considering the influence of other external factors, in order to ensure the safety of static braking, the maximum pressure build-up is set to be greater than the minimum braking pressure, taking into account the first and second pressure deviation coefficients, to allow for redundancy.

[0060] This invention also provides a control system for optimizing brake caliper drag, the control system comprising:

[0061] The information acquisition module is used to acquire relevant vehicle data, including current wheel speed pulse sensor signal, current vehicle speed, current brake pedal opening, current vehicle weight, current vehicle slope, current vehicle tire radius, and current vehicle ambient temperature.

[0062] Specifically, various sensors or monitoring devices installed on the vehicle acquire current wheel speed pulse sensing signals, current vehicle speed, current brake pedal opening, current vehicle weight, current slope, current tire radius, and current ambient temperature. These sensors and monitoring devices transmit the collected information to the vehicle's electronic control unit (ECU). The ECU communicates with the input of the information acquisition module, enabling the module to obtain the aforementioned vehicle data. For example, acquiring current wheel speed pulse sensing signals can be done through wheel speed sensors installed on the wheels and then transmitted to the ECU.

[0063] The signal processing module is used to process and analyze the received vehicle data to determine the maximum pressure build-up. The input of the signal processing module is connected to the output of the information acquisition module to obtain relevant vehicle data.

[0064] Specifically, first, determine whether the vehicle is currently braking and stationary based on relevant vehicle data. If so, calculate the minimum braking pressure using a formula based on the vehicle's data. Finally, determine the maximum pressure build-up based on the minimum braking pressure, the current slope value obtained from a table, and the corresponding first and second pressure deviation coefficients for the current ambient temperature value.

[0065] The pressure control module limits the maximum braking pressure of the vehicle's hydraulic braking system to ensure that the driver's target braking pressure does not exceed the maximum build-up pressure. The driver's target braking pressure is the braking pressure obtained when the driver depresses the brake pedal.

[0066] In summary, by configuring the information acquisition module, signal processing module, and pressure control module, the brake calipers will not exhibit drag torque when the vehicle is in static braking condition, thus meeting consumers' demands for vehicle performance.

[0067] refer to Figure 2 The present invention also provides a machine-readable storage medium 400 on which a machine-executable program 410 is stored. When the machine-executable program 410 is executed by a processor, it implements the optimized brake caliper drag control method in the above embodiments.

[0068] refer to Figure 3 The present invention also provides a computer device 500, including a memory 520, a processor 510, and a machine-executable program 410 stored in the memory and running on the processor. When the processor 510 executes the machine-executable program 410, it implements the optimized brake caliper drag control method described in the above embodiments.

[0069] For the purposes of this embodiment, the machine-readable storage medium 400 can be any means capable of containing, storing, communicating, propagating, or transmitting a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the machine-readable storage medium 400 include: an electrical connection (electronic device) having one or more wires, a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, the machine-readable storage medium 400 can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0070] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system.

[0071] Computer device 500 can be, for example, a server, desktop computer, laptop computer, tablet computer, or smartphone. In some examples, computer device 500 can be a cloud computing node. Computer device 500 can be described in the general context of computer system executable instructions (such as program modules) executed by a computer system. Typically, program modules can include routines, programs, object programs, components, logic, data structures, etc., that perform specific tasks or implement specific abstract data types. Computer device 500 can be implemented in a distributed cloud computing environment where tasks are performed by remote processing devices linked through a communication network. In a distributed cloud computing environment, program modules can reside on local or remote computing system storage media, including storage devices.

[0072] Computer device 500 may include a processor 510 adapted to execute stored instructions and a memory 520 that provides temporary storage space for the operation of said instructions during operation. The processor 510 may be a single-core processor, a multi-core processor, a computing cluster, or any other configuration. The memory 520 may include random access memory (RAM), read-only memory, flash memory, or any other suitable storage system.

[0073] The processor 510 can be connected via a system interconnect (e.g., PCI, PCI-Express, etc.) to an I / O interface (input / output interface) suitable for connecting the computer device 500 to one or more I / O devices (input / output devices). I / O devices may include, for example, a keyboard and indicating devices, where indicating devices may include a touchpad or touchscreen, etc. I / O devices may be built into the computer device 500 or may be external devices connected to the computing device.

[0074] The processor 510 can also be linked via a system interconnect to a display interface suitable for connecting the computer device 500 to a display device. The display device may include a display screen as a built-in component of the computer device 500. The display device may also include an external computer monitor, television, or projector connected to the computer device 500. Furthermore, a network interface controller (NIC) may be adapted to connect the computer device 500 to a network via a system interconnect. In some embodiments, the NIC may use any suitable interface or protocol (such as an Internet Minicomputer System Interface) to transmit data. The network may be a cellular network, a radio network, a wide area network (WAN), a local area network (LAN), or the Internet, etc. Remote devices can connect to the computing device via the network.

[0075] 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 control method for optimizing brake caliper drag, characterized in that, The control method includes: Determine the current vehicle status, that is, determine whether the current vehicle is braking and stationary; If so, determine the current minimum braking pressure of the vehicle; The maximum build-up pressure of the current vehicle is determined based on the minimum braking pressure, so that the driver's target braking pressure does not exceed the maximum build-up pressure.

2. The method for controlling optimized brake caliper drag according to claim 1, characterized in that, Before determining the current vehicle status, the process also includes: Obtain vehicle driving data; The current vehicle status is determined based on the vehicle driving data.

3. The method for controlling optimized brake caliper drag according to claim 2, characterized in that, The vehicle driving data includes the current wheel speed pulse sensor signal, the current vehicle speed, and the current brake pedal opening.

4. The method for controlling optimized brake caliper drag according to claim 3, characterized in that, The method of determining the current vehicle status based on the vehicle driving data includes: When the current brake pedal opening is detected to be higher than the preset opening value, it is determined that the vehicle is currently in a braking state. When the current vehicle speed is detected to be lower than the preset speed value and the current wheel speed pulse sensor signal frequency is lower than the preset frequency value, it is determined that the current vehicle is stationary.

5. The method for controlling optimized brake caliper drag according to claim 1, characterized in that, Determining the minimum braking pressure of the current vehicle includes: Get the current vehicle weight, the current slope of the vehicle, and the current tire radius of the vehicle; The minimum braking pressure of the current vehicle is calculated based on the current vehicle weight, the current slope of the vehicle, and the current tire radius. The minimum braking pressure of the current vehicle is P=W*R*S. Where W is the vehicle's full load mass in kilograms (Kg); R is the vehicle's tire radius in meters (m); and S is the slope of the vehicle in percentage (%).

6. The method for controlling optimized brake caliper drag according to claim 1, characterized in that, The method of determining the current vehicle's maximum pressure build-up based on the minimum braking pressure includes: Obtain the current slope value and the current ambient temperature value of the vehicle; The first pressure deviation coefficient and the second pressure deviation coefficient are calculated by referring to tables based on the current slope value and the current ambient temperature value of the vehicle. The maximum pressure build-up pressure of the current vehicle = the minimum braking pressure of the current vehicle * the first pressure deviation coefficient * the second pressure deviation coefficient.

7. The method for controlling optimized brake caliper drag according to claim 1, characterized in that, The control method further includes: Determine the current vehicle status, that is, determine whether the current vehicle is braking and stationary; If not, then execute the normal pressure build-up strategy; The normal pressure-building strategy is that the current vehicle's pressure build-up completely follows the driver's target braking pressure.

8. A control system for optimizing brake caliper drag, characterized in that, The control system includes: The information acquisition module is used to acquire relevant vehicle data, including current wheel speed pulse sensor signal, current vehicle speed, current brake pedal opening, current vehicle weight, current vehicle slope, current vehicle tire radius, and current vehicle ambient temperature. The signal processing module is used to process and judge the data after receiving relevant data from the vehicle, and to determine the maximum pressure build-up. The pressure control module is used to limit the maximum braking pressure of the vehicle's hydraulic braking system so that the driver's target braking pressure does not exceed the maximum build-up pressure.

9. A machine-readable storage medium, characterized in that, It stores a machine-executable program, which, when executed by a processor, implements the optimized brake caliper drag control method according to any one of claims 1-7.

10. A computer device, characterized in that, It includes a memory, a processor, and a machine-executable program stored in the memory and running on the processor, wherein the processor, when executing the machine-executable program, implements the control method for optimizing brake caliper drag as described in any one of claims 1-7.

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