Self-adaptive fluid infusion control method, device and equipment for brake-by-wire system

Abstract

The invention relates to the technical field of brake-by-wire, and provides a self-adaptive fluid infusion control method, device and equipment for a brake-by-wire system. The method comprises the steps that when a to-be-controlled vehicle enters a braking mode, the deceleration and the running speed of the to-be-controlled vehicle are obtained; according to the deceleration, the road surface type of the road surface where the to-be-controlled vehicle is located is recognized, and the road surface type is the type obtained by dividing the road surface based on the adhesion coefficient; and determining a liquid supplementing strategy according to the road surface type and the driving speed, and controlling the to-be-controlled vehicle to supplement liquid based on the liquid supplementing strategy. The method has the core advantages that the attachment type of the current road surface is recognized by obtaining the deceleration and the driving speed of the vehicle, and the optimal liquid supplementing strategy is selected accordingly. According to the method, the inherent defect that a traditional fixed parameter fluid infusion strategy is single in performance under different road conditions is overcome, and the performance optimal balance within the full working condition range is achieved. The intelligent self-adaptive mechanism greatly improves the comprehensive performance and the driving experience of the brake-by-wire system.

Description

Technical Field

[0001] This invention relates to the field of brake-by-wire technology, and in particular to an adaptive fluid replenishment control method, apparatus, and equipment for brake-by-wire systems. Background Technology

[0002] Currently, based on different implementation methods and system architectures, brake-by-wire technology is divided into three categories: Extended Host Bridge Two-box (EHB Two-box), Extended Host Bridge One-box (EHB One-box), and Embedded Bridge (EMB). Among these, the Two-box is the most stable, mature, and technologically advanced, but it employs a separate design, placing the Electronic Stability Controller (ESC) and the electronic power steering separately. The One-box system represents the highest level of integration in current Extended Host Bridge (EHB) technology, integrating the electronic power steering, ESC, and hydraulic control unit into a compact module. The core advantage of the EMB system lies in its foundation in mature hydraulic braking technology, circumventing the regulatory and technical hurdles faced by fully steer-by-wire systems, while offering better performance and functional scalability than traditional braking systems. However, it is still in the research and development stage and has not yet been mass-produced or commercialized.

[0003] During emergency braking, the vehicle's Anti-lock Braking System (ABS) may be triggered. When ABS is activated, hydraulic fluid flows from the wheel inlet valves into the wheels to pressurize them and apply pressure. As the wheels approach lock-up, the wheel outlet valves open, and fluid flows back to the reservoir. Therefore, the hydraulic fluid in the circuit is continuously consumed during this process. When the fluid level drops to a certain point, the fluid in the circuit will be insufficient to meet the next pressurization requirement, necessitating replenishment. Current technology often uses the same replenishment strategy for all road conditions, failing to address the different replenishment requirements of various road surfaces. This results in problems such as high replenishment noise and delayed response. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an adaptive fluid replenishment control method, device and equipment for a brake-by-wire system, so as to solve the above-mentioned technical problem.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an adaptive fluid replenishment control method for a brake-by-wire system, comprising: when the vehicle to be controlled enters braking mode, acquiring the deceleration and travel speed of the vehicle to be controlled; identifying the road surface type of the road surface where the vehicle to be controlled is located based on the deceleration, wherein the road surface type is a category of road surface based on the level of the adhesion coefficient; determining a fluid replenishment strategy based on the road surface type and the travel speed, and controlling the vehicle to be controlled to replenish fluid based on the fluid replenishment strategy.

[0006] The beneficial effects of this invention are as follows: Its core advantage lies in identifying the current road surface adhesion type by acquiring vehicle deceleration and speed, and then selecting the optimal fluid replenishment strategy accordingly. This method overcomes the inherent defect of traditional fixed-parameter fluid replenishment strategies, which exhibit only single-mode performance under different road conditions, achieving optimal performance balance across the entire operating range. This intelligent adaptive mechanism significantly improves the overall performance and driving experience of the brake-by-wire system, and can be implemented solely based on existing vehicle signals without incurring additional hardware costs, demonstrating extremely high reliability, practicality, and promotional value.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the road surface type is a low-adhesion road surface, a medium-adhesion road surface, or a high-adhesion road surface.

[0009] Furthermore, the step of identifying the road surface type of the road where the vehicle to be controlled is located based on the deceleration includes: when the deceleration is less than a first preset threshold, determining the road surface type as a low-adhesion road surface; when the deceleration is greater than or equal to the first preset threshold and less than or equal to a second preset threshold, determining the road surface type as a medium-adhesion road surface; and when the deceleration is greater than the second preset threshold, determining the road surface type as a high-adhesion road surface.

[0010] Furthermore, the fluid replenishment strategy can be a first fluid replenishment strategy, a second fluid replenishment strategy, a third fluid replenishment strategy, or a fourth fluid replenishment strategy; the first fluid replenishment strategy represents fluid replenishment based on a first preset flow rate, the second fluid replenishment strategy represents fluid replenishment based on a second preset flow rate, the third fluid replenishment strategy represents fluid replenishment based on a third preset flow rate, and the fourth fluid replenishment strategy represents fluid replenishment based on a fourth preset flow rate; wherein, the first preset flow rate is less than the second preset flow rate, the second preset flow rate is less than the third preset flow rate, and the third preset flow rate is less than the fourth preset flow rate.

[0011] Furthermore, determining the fluid replenishment strategy based on the road surface type and the driving speed includes: when the road surface type is a low-friction road surface, determining whether the driving speed is less than a first preset speed; if it is less, determining the fluid replenishment strategy as the first fluid replenishment strategy; otherwise, determining the fluid replenishment strategy as the second fluid replenishment strategy.

[0012] Furthermore, the step of determining the fluid replenishment strategy based on the road surface type and the driving speed further includes: when the road surface type is a medium-gray road surface, determining whether the driving speed is less than a second preset speed; if it is less, determining the fluid replenishment strategy as the second fluid replenishment strategy; otherwise, determining the fluid replenishment strategy as the third fluid replenishment strategy.

[0013] Furthermore, the step of determining the fluid replenishment strategy based on the road surface type and the driving speed also includes: when the road surface type is a high-adhesion road surface, determining whether the driving speed is less than a third preset speed; if it is less, then determining the fluid replenishment strategy as the third fluid replenishment strategy; otherwise, determining the fluid replenishment strategy as the fourth fluid replenishment strategy.

[0014] To address the aforementioned technical problems, the present invention also provides an adaptive fluid replenishment control device for a brake-by-wire system, comprising: The data acquisition module is used to acquire the deceleration and speed of the vehicle to be controlled when the vehicle to be controlled enters the braking mode. The type recognition module is used to identify the road surface type of the road surface where the vehicle to be controlled is located based on the deceleration. The road surface type is a category of road surface based on the level of the adhesion coefficient. The strategy generation module is used to determine a fluid replenishment strategy based on the road surface type and the driving speed, so as to control the vehicle to be controlled to replenish fluid based on the fluid replenishment strategy.

[0015] To address the aforementioned technical problems, the present invention also provides an electronic device, including 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 adaptive fluid replenishment control method for a brake-by-wire system as described above.

[0016] To address the aforementioned technical problems, the present invention also provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the adaptive fluid replenishment control method for a brake-by-wire system as described above. Attached Figure Description

[0017] Figure 1 This is a flowchart of the adaptive fluid replenishment control method for a brake-by-wire system according to the present invention; Figure 2This is a schematic diagram comparing the flow rates of different replenishment strategies in the adaptive replenishment control method for a brake-by-wire system according to the present invention. Figure 3 This is a schematic diagram of the adaptive fluid replenishment control device for a brake-by-wire system according to the present invention; Figure 4 This is a schematic diagram of the electronic device of the present invention. Detailed Implementation

[0018] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] Example 1 like Figure 1 As shown, this embodiment provides an adaptive fluid replenishment control method for a brake-by-wire system, including: S101. When the vehicle to be controlled enters braking mode, obtain the deceleration and speed of the vehicle to be controlled.

[0020] S102. Based on the deceleration, identify the road surface type of the road surface where the vehicle to be controlled is located. The road surface type is a category of road surface based on the level of the adhesion coefficient.

[0021] S103. Determine the fluid replenishment strategy based on the road surface type and driving speed, and control the vehicle to be controlled to replenish fluid based on the fluid replenishment strategy.

[0022] When the vehicle begins full braking, its deceleration and speed are acquired. The magnitude of the deceleration is used to determine the current road conditions. Then, based on different road types and real-time vehicle speed, a comprehensive judgment is made to match the optimal fluid replenishment strategy. This ensures smooth and quiet fluid replenishment under low-traction conditions and fast and stable fluid replenishment under high-traction conditions.

[0023] The core advantage of this method lies in identifying the current road surface adhesion type by acquiring vehicle deceleration and speed, and then selecting the optimal fluid replenishment strategy accordingly. This method overcomes the inherent limitation of traditional fixed-parameter fluid replenishment strategies, which exhibit inconsistent performance under different road conditions, achieving optimal performance balance across the entire operating range. This intelligent adaptive mechanism significantly improves the overall performance and driving experience of the brake-by-wire system, and can be implemented using only existing vehicle signals without additional hardware costs, demonstrating extremely high reliability, practicality, and promotional value.

[0024] Optionally, in the embodiments, the road surface type is a low-adhesion road surface, a medium-adhesion road surface, or a high-adhesion road surface.

[0025] Low-friction road surfaces refer to road conditions with a very low coefficient of friction, making them extremely slippery. When a vehicle brakes at full force on such a surface, the maximum braking deceleration is between 0 and 2 m / s². 2In situations like muddy roads, zebra crossings or traffic markings after rain, or compacted snow, the tires are prone to locking up, causing ABS to intervene frequently and significantly increasing braking distance. In these situations, the challenge lies in maintaining vehicle stability and steering control, rather than aiming for the shortest possible braking distance.

[0026] Medium-coefficient road surface refers to a road surface with a moderate coefficient of adhesion, which is a relatively common road condition. When a vehicle brakes at full force on this type of road surface, the maximum braking deceleration is approximately 2 m / s². 2 Up to 6m / s 2 In between. For example, slippery asphalt roads, dry roads with fine sand or dust, heavily worn old roads, and damp brick roads. For roads with medium traction, the tires have some grip, but it is not optimal, and the ABS may work intermittently.

[0027] High-adhesion road surfaces refer to road conditions with a very high coefficient of friction and excellent tire grip. When a vehicle brakes at full force on such a surface, the maximum braking deceleration is approximately 6 m / s². 2 Up to 10 m / s 2 Between these surfaces, such as dry, clean asphalt or concrete roads, and professional racetracks, the tires provide excellent grip on high-adhesion surfaces, generating very high braking force. The challenge of the braking system is how to efficiently and quickly transfer this enormous hydraulic pressure to the wheel ends to achieve the shortest possible braking distance. In this situation, ABS may not activate, or it may activate very late.

[0028] Optionally, in an embodiment, identifying the road surface type of the road where the vehicle to be controlled is located based on the deceleration includes: determining the road surface type as a low-adhesion road surface when the deceleration is less than a first preset threshold; determining the road surface type as a medium-adhesion road surface when the deceleration is greater than or equal to the first preset threshold and less than or equal to a second preset threshold; and determining the road surface type as a high-adhesion road surface when the deceleration is greater than the second preset threshold.

[0029] Based on practical experience, the first preset threshold is set to 2 m / s. 2 The second preset threshold is set to 6 m / s 2 .

[0030] Optionally, in the embodiments, the fluid replenishment strategy is a first fluid replenishment strategy, a second fluid replenishment strategy, a third fluid replenishment strategy, or a fourth fluid replenishment strategy; the first fluid replenishment strategy represents fluid replenishment based on a first preset flow rate, the second fluid replenishment strategy represents fluid replenishment based on a second preset flow rate, the third fluid replenishment strategy represents fluid replenishment based on a third preset flow rate, and the fourth fluid replenishment strategy represents fluid replenishment based on a fourth preset flow rate; wherein, the first preset flow rate is less than the second preset flow rate, the second preset flow rate is less than the third preset flow rate, and the third preset flow rate is less than the fourth preset flow rate.

[0031] like Figure 2As shown, the four curves, from bottom to top, represent the flow rate change curves corresponding to the first replenishment strategy, the second replenishment strategy, the third replenishment strategy, and the fourth replenishment strategy, respectively.

[0032] The first fluid replenishment strategy uses a low flow rate to control motor speed, reduce replenishment noise, improve NVH (noise, vibration, and harshness) performance, and meet braking requirements. The second strategy uses a medium-low flow rate to balance response speed and noise control. The third strategy uses a medium-high flow rate to ensure rapid replenishment response while moderately controlling noise. The fourth strategy uses a high flow rate to prioritize braking performance, quickly build up pressure, and ignore noise factors (due to already high ambient noise levels).

[0033] Optionally, in an embodiment, determining the fluid replenishment strategy based on the road surface type and driving speed includes: when the road surface type is a low-adhesion road surface, determining whether the driving speed is less than a first preset speed; if it is less, determining the fluid replenishment strategy as the first fluid replenishment strategy; otherwise, determining the fluid replenishment strategy as the second fluid replenishment strategy.

[0034] Optionally, in the embodiments, determining the fluid replenishment strategy based on the road surface type and driving speed further includes: when the road surface type is a medium-gray road surface, determining whether the driving speed is less than a second preset speed; if it is less, determining the fluid replenishment strategy as the second fluid replenishment strategy; otherwise, determining the fluid replenishment strategy as the third fluid replenishment strategy.

[0035] Optionally, in the embodiments, determining the fluid replenishment strategy based on the road surface type and driving speed further includes: when the road surface type is a high-adhesion road surface, determining whether the driving speed is less than a third preset speed; if it is less, determining the fluid replenishment strategy as the third fluid replenishment strategy; otherwise, determining the fluid replenishment strategy as the fourth fluid replenishment strategy.

[0036] Vehicle speed will be limited depending on the road conditions. In this embodiment, the first preset speed is set to 20 kph (kilometers per hour), the second preset speed is set to 40 kph, and the third preset speed is set to 70 kph.

[0037] Selecting different fluid replenishment strategies based on varying road conditions and vehicle speeds is crucial for optimizing brake-by-wire performance and NVH (noise, vibration, and harshness) performance. Therefore, multiple different replenishment strategies are employed to adapt to different road conditions. For example, on low-friction surfaces and at lower speeds, vehicle vibration, road surface noise, environmental noise, and wind noise are minimal. During braking, the main noise source is the high-speed motor's high-speed whine during fluid replenishment. To optimize this noise, the first replenishment strategy is chosen: requesting a smaller fluid flow rate to control motor speed while maintaining low-friction braking performance. As another example, on high-friction surfaces and at higher speeds, vehicle vibration, road surface noise, environmental noise, and wind noise are the primary sources of noise. In this case, braking intensity is higher, requiring a rapid increase in fluid volume. To meet this performance requirement, the fourth replenishment strategy is chosen: requesting a larger fluid flow rate primarily to satisfy braking performance.

[0038] In summary, this method comprehensively considers multiple influencing factors and optimizes the fluid replenishment mechanism of the brake-by-wire hydraulic system. It significantly improves the fluid replenishment stability, response speed, and overall NVH performance under different road surface and vehicle speed conditions. On high-friction surfaces and at high speeds, priority is given to ensuring braking efficiency, using a large-flow fluid replenishment to quickly build pressure, significantly shortening braking distance and ensuring driving safety. On low-friction surfaces and at low speeds, priority is given to ensuring ride comfort, using a small-flow fluid replenishment to effectively suppress the whine and hydraulic fluctuations caused by high-speed motor operation, greatly improving the vehicle's NVH performance.

[0039] Example 2 like Figure 3 As shown, this embodiment provides an adaptive fluid replenishment control device 200 for a brake-by-wire system, comprising: The data acquisition module 201 is used to acquire the deceleration and speed of the vehicle to be controlled when the vehicle to be controlled enters the braking mode. The type recognition module 202 is used to identify the road surface type of the road surface where the vehicle to be controlled is located based on the deceleration. The road surface type is a category of road surface based on the level of the adhesion coefficient. The strategy generation module 203 is used to determine the fluid replenishment strategy based on the road surface type and driving speed, so as to control the vehicle to be controlled to replenish fluid based on the fluid replenishment strategy.

[0040] Optionally, in the embodiments, the road surface type is a low-adhesion road surface, a medium-adhesion road surface, or a high-adhesion road surface.

[0041] Optionally, in an embodiment, when the type identification module 202 identifies the road surface type of the road surface where the vehicle to be controlled is located based on the deceleration, it is specifically used to: determine the road surface type as a low-adhesion road surface when the deceleration is less than a first preset threshold; determine the road surface type as a medium-adhesion road surface when the deceleration is greater than or equal to the first preset threshold and less than or equal to a second preset threshold; and determine the road surface type as a high-adhesion road surface when the deceleration is greater than the second preset threshold.

[0042] Optionally, in the embodiments, the fluid replenishment strategy is a first fluid replenishment strategy, a second fluid replenishment strategy, a third fluid replenishment strategy, or a fourth fluid replenishment strategy; the first fluid replenishment strategy represents fluid replenishment based on a first preset flow rate, the second fluid replenishment strategy represents fluid replenishment based on a second preset flow rate, the third fluid replenishment strategy represents fluid replenishment based on a third preset flow rate, and the fourth fluid replenishment strategy represents fluid replenishment based on a fourth preset flow rate; wherein, the first preset flow rate is less than the second preset flow rate, the second preset flow rate is less than the third preset flow rate, and the third preset flow rate is less than the fourth preset flow rate.

[0043] Optionally, in an embodiment, the policy generation module 203 includes: The first generation unit is used to determine whether the driving speed is less than the first preset speed when the road surface type is low-adhesion road surface. If it is less, the first fluid replenishment strategy is determined; otherwise, the second fluid replenishment strategy is determined.

[0044] Optionally, in an embodiment, the policy generation module 203 further includes: The second generation unit is used to determine whether the driving speed is less than the second preset speed when the road surface type is medium-adhesive road surface. If it is less, the fluid replenishment strategy is determined to be the second fluid replenishment strategy; otherwise, the fluid replenishment strategy is determined to be the third fluid replenishment strategy.

[0045] Optionally, in an embodiment, the policy generation module 203 further includes: The third generation unit is used to determine whether the driving speed is less than the third preset speed when the road surface type is a high-adhesion road surface. If it is less, the third fluid replenishment strategy is determined; otherwise, the fourth fluid replenishment strategy is determined.

[0046] In some embodiments, the adaptive fluid replenishment control device 200 for a brake-by-wire system of the present invention can be implemented in a combination of hardware and software. As an example, the adaptive fluid replenishment control device 200 for a brake-by-wire system of the present invention can be a processor in the form of a hardware decoding processor, which is programmed to execute the adaptive fluid replenishment control method for a brake-by-wire system of the present invention. For example, the processor in the form of a hardware decoding processor can be one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), or other electronic components.

[0047] The modules described in the embodiments of this invention can be implemented in software or hardware. The names of the modules are not, in some cases, limiting the scope of the module itself.

[0048] Example 3 like Figure 4 As shown, this embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the adaptive fluid replenishment control method for a brake-by-wire system as described in Embodiment 1.

[0049] In other words, an electronic device according to an embodiment of the present invention may include, but is not limited to: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the adaptive fluid replenishment control method for a brake-by-wire system shown in any embodiment of the present invention by calling the computer program.

[0050] In one alternative embodiment, an electronic device is provided, such as Figure 4 As shown, Figure 4 The illustrated electronic device 300 includes a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, for example, via a bus 302. Optionally, the electronic device 300 may further include a transceiver 304, which can be used for data interaction between the electronic device and other electronic devices, such as sending and / or receiving data. It should be noted that in practical applications, the transceiver 304 is not limited to one type, and the structure of the electronic device 300 does not constitute a limitation on the embodiments of the present invention.

[0051] Processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. Processor 301 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0052] Bus 302 may include a path for transmitting information between the aforementioned components. Bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 302 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The bus 302 is represented by only one thick line, but this does not mean that there is only one bus or one type of bus.

[0053] The memory 303 may be a ROM (Read Only Memory) or other type of static storage device capable of storing static information and instructions, RAM (Random Access Memory) or other type of dynamic storage device capable of storing information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0054] The memory 303 is used to store application code (computer program) for executing the present invention, and its execution is controlled by the processor 301. The processor 301 is used to execute the application code stored in the memory 303 to implement the content shown in the foregoing method embodiments.

[0055] Among them, electronic devices can also be terminal devices, which can be any device that can install applications, including at least one of smartphones, tablets, laptops, desktop computers, smart speakers, smartwatches, smart TVs, and smart in-vehicle devices.

[0056] It should be noted that, Figure 4 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0057] Example 4 This embodiment provides a non-transitory computer-readable storage medium that stores computer instructions for causing a computer to execute an adaptive fluid replenishment control method for a brake-by-wire system as described in Embodiment 1.

[0058] Alternatively, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), magnetic tape, a floppy disk, and an optical data storage device, etc.

[0059] In an exemplary embodiment, a computer program product or computer program is also provided, which includes computer instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the aforementioned adaptive fluid replenishment control method for a brake-by-wire system.

[0060] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0061] It should be understood that the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the 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 the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may 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.

[0062] The computer-readable storage medium provided in this invention can be, but is not limited to, 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, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EEPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0063] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to perform the method shown in the above embodiments.

[0064] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

[0065] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and represent a limitation on a specific order or sequence. Where appropriate, the order of use for similar objects can be interchanged so that the embodiments of this application described herein can be implemented in an order other than that shown or described.

[0066] Those skilled in the art will recognize that this invention can be implemented as a system, method, or computer program product. Therefore, this invention can be specifically implemented in the following forms: it can be entirely hardware, entirely software (including firmware, resident software, microcode, etc.), or a combination of hardware and software, generally referred to herein as a "circuit," "module," or "system." Furthermore, in some embodiments, this invention can also be implemented as a computer program product contained in one or more computer-readable media, which includes computer-readable program code.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An adaptive fluid replenishment control method for a brake-by-wire system, characterized in that, include: When the vehicle to be controlled enters braking mode, the deceleration and speed of the vehicle to be controlled are obtained; Based on the deceleration, the road surface type of the road surface where the vehicle to be controlled is located is identified. The road surface type is a category of road surface based on the level of the adhesion coefficient. A fluid replenishment strategy is determined based on the road surface type and the driving speed, and the vehicle to be controlled is then controlled to replenish fluid based on the fluid replenishment strategy.

2. The adaptive fluid replenishment control method for a brake-by-wire system according to claim 1, characterized in that, The road surface type is low-adhesion road surface, medium-adhesion road surface, or high-adhesion road surface.

3. The adaptive fluid replenishment control method for a brake-by-wire system according to claim 2, characterized in that, The step of identifying the road surface type of the road where the vehicle to be controlled is located based on the deceleration includes: When the deceleration is less than a first preset threshold, the road surface type is determined to be a low-adhesion road surface; When the deceleration is greater than or equal to the first preset threshold and less than or equal to the second preset threshold, the road surface type is determined to be a medium-grained road surface. When the deceleration is greater than the second preset threshold, the road surface type is determined to be a high-adhesion road surface.

4. The adaptive fluid replenishment control method for a brake-by-wire system according to claim 2, characterized in that, The fluid replenishment strategy is a first fluid replenishment strategy, a second fluid replenishment strategy, a third fluid replenishment strategy, or a fourth fluid replenishment strategy; the first fluid replenishment strategy represents fluid replenishment based on a first preset flow rate, the second fluid replenishment strategy represents fluid replenishment based on a second preset flow rate, the third fluid replenishment strategy represents fluid replenishment based on a third preset flow rate, and the fourth fluid replenishment strategy represents fluid replenishment based on a fourth preset flow rate; wherein, the first preset flow rate is less than the second preset flow rate, the second preset flow rate is less than the third preset flow rate, and the third preset flow rate is less than the fourth preset flow rate.

5. The adaptive fluid replenishment control method for a brake-by-wire system according to claim 4, characterized in that, The step of determining the fluid replenishment strategy based on the road surface type and the driving speed includes: When the road surface type is a low-adhesion road surface, it is determined whether the driving speed is less than a first preset speed. If it is less, the fluid replenishment strategy is determined to be the first fluid replenishment strategy; otherwise, the fluid replenishment strategy is determined to be the second fluid replenishment strategy.

6. The adaptive fluid replenishment control method for a brake-by-wire system according to claim 4, characterized in that, The step of determining the fluid replenishment strategy based on the road surface type and the driving speed also includes: When the road surface type is medium-grade road surface, determine whether the driving speed is less than the second preset speed. If it is less, determine that the fluid replenishment strategy is the second fluid replenishment strategy; otherwise, determine that the fluid replenishment strategy is the third fluid replenishment strategy.

7. The adaptive fluid replenishment control method for a brake-by-wire system according to claim 4, characterized in that, The step of determining the fluid replenishment strategy based on the road surface type and the driving speed also includes: When the road surface type is a high-adhesion road surface, it is determined whether the driving speed is less than a third preset speed. If it is less, the fluid replenishment strategy is determined to be the third fluid replenishment strategy; otherwise, the fluid replenishment strategy is determined to be the fourth fluid replenishment strategy.

8. An adaptive fluid replenishment control device for a brake-by-wire system, characterized in that, include: The data acquisition module is used to acquire the deceleration and speed of the vehicle to be controlled when the vehicle to be controlled enters the braking mode. The type recognition module is used to identify the road surface type of the road surface where the vehicle to be controlled is located based on the deceleration. The road surface type is a category of road surface based on the level of the adhesion coefficient. The strategy generation module is used to determine a fluid replenishment strategy based on the road surface type and the driving speed, so as to control the vehicle to be controlled to replenish fluid based on the fluid replenishment strategy.

9. An electronic device, characterized in that, The system includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the adaptive fluid replenishment control method for a brake-by-wire system as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to execute the adaptive fluid replenishment control method for a brake-by-wire system as described in any one of claims 1 to 7.

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