Front wheel pressure adjustment method, device and storage medium

Abstract

The embodiment of the present invention discloses a front wheel pressure regulation method, device and storage medium. The front wheel pressure regulation method comprises: obtaining a brake pedal stroke signal; determining the front wheel pressure state according to the brake pedal stroke signal; adjusting the opening of the front wheel inlet valve or maintaining the opening of the front wheel inlet valve according to the front wheel pressure state to control the front wheel boost rate. This solution can reduce the boost rate of the front wheel by adjusting the opening of the front wheel inlet valve, prevent the front wheel pressure from reaching the locking critical point quickly, and prevent the front wheel from entering the locking state quickly, thereby reducing the braking distance and enhancing the safety of vehicle braking to a certain extent. In addition, by adjusting the opening of the front wheel inlet valve to reduce the front wheel boost rate, the vehicle's powertrain suspension can be prevented from hitting the limit, avoiding collision noise and collision vibration inside the vehicle, and ensuring the comfort of the vehicle to a certain extent.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of vehicle control technology, and in particular to a front wheel pressure adjustment method, device and storage medium. Background Art

[0002] At present, new energy vehicles are widely equipped with integrated brake control systems. The integrated brake control system integrates the basic brake assist control and the single-wheel pressure adjustment control. It is an integrated electro-hydraulic brake system, so it is called the "OneBox" brake system. The integrated brake control system has the characteristics of fast response speed, that is, when the driver quickly steps on the brake pedal, the integrated brake control system can quickly build up brake pressure in the four wheel cylinders of the vehicle. However, once the driver steps on the brake pedal too quickly, the degree of axle load transfer will be too large during the braking process, causing the front wheels of the vehicle to build up brake pressure too quickly, and then the front wheel boost rate will be too fast. If the front wheel boost rate is too fast, the front wheel pressure will quickly reach the critical point of locking, causing the front wheel to quickly enter the locking state, thereby increasing the braking distance. In addition, the front wheel boost rate is too fast, which will also cause the vehicle's powertrain suspension to hit the limit, causing the vehicle to emit collision noise and collision vibration, reducing the comfort of the vehicle. Summary of the invention

[0003] The embodiments of the present invention provide a front wheel pressure regulation method, device and storage medium to control the front wheel pressure boost rate, prevent the front wheel pressure from quickly reaching the locking critical point and entering a locking state, thereby improving the safety of vehicle braking and the comfort of the vehicle.

[0004] In a first aspect, an embodiment of the present invention provides a front wheel pressure adjustment method, which includes:

[0005] Acquire brake pedal travel signal;

[0006] determining a front wheel pressure state according to the brake pedal travel signal;

[0007] According to the front wheel pressure state, the front wheel fluid inlet valve opening is adjusted or the front wheel fluid inlet valve opening is maintained to control the front wheel boost rate.

[0008] Optionally, the method for obtaining a brake pedal travel signal includes:

[0009] The brake pedal stroke is detected by a pedal stroke sensor to obtain the brake pedal stroke signal.

[0010] Optionally, the front wheel pressure state includes abnormal pressure increase and normal pressure increase;

[0011] A method for determining a front wheel pressure state, comprising:

[0012] calculating a brake pedal rate according to the brake pedal travel signal;

[0013] determining whether the brake pedal speed is greater than or equal to a target speed;

[0014] If yes, the front wheel pressure state is an abnormal boost state;

[0015] If not, the front wheel pressure state is a normal boost state.

[0016] Optionally, adjusting the opening of the front wheel fluid inlet valve or maintaining the opening of the front wheel fluid inlet valve according to the front wheel pressure state includes:

[0017] If the front wheel pressure state is an abnormal boost state, adjusting the front wheel fluid inlet valve opening according to the brake pedal speed;

[0018] If the front wheel pressure state is in a normal boost state, the opening of the front wheel fluid inlet valve is maintained.

[0019] Optionally, the brake pedal travel signal includes pedal displacement and pedal depression time.

[0020] Optionally, the method for adjusting the opening of the front wheel fluid inlet valve according to the brake pedal speed includes:

[0021] adjusting a duty cycle of the pulse signal according to the brake pedal speed;

[0022] Obtaining a regulating current according to the pulse signal with the duty cycle adjusted;

[0023] The opening of the front wheel fluid inlet valve is adjusted according to the adjustment current.

[0024] Optionally, after adjusting the opening of the front wheel fluid inlet valve, the method further includes:

[0025] determining, according to the brake pedal travel signal, whether the brake pedal travel has reached a maximum pedal travel;

[0026] If the brake pedal travel reaches the maximum pedal travel, the front wheel pressure regulation is terminated and the front wheel anti-lock braking is activated.

[0027] Optionally, the front wheel boost rate is less than or equal to 800 bar / s.

[0028] In a second aspect, an embodiment of the present invention further provides a front wheel pressure regulating device, which includes:

[0029] A pedal stroke signal acquisition module, used for acquiring a brake pedal stroke signal;

[0030] A front wheel pressure state determination module, used for determining the front wheel pressure state according to the brake pedal travel signal;

[0031] The front wheel pressure control module is used to adjust the opening of the front wheel fluid inlet valve or maintain the opening of the front wheel fluid inlet valve according to the front wheel pressure state to control the front wheel boost rate.

[0032] In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the front wheel pressure adjustment method proposed in any of the above embodiments.

[0033] The embodiment of the present invention can reflect the movement of the brake pedal stepped by the driver according to the brake pedal stroke signal by acquiring the brake pedal stroke signal, so that the speed of the driver stepping on the brake pedal can be judged according to the movement of the brake pedal, so as to determine whether the degree of vehicle axle load transfer is too large during the driver stepping on the brake pedal, and thus determine the front wheel pressure state. If the front wheel pressure state indicates that the front wheel boost pressure rate is normal, there is no need to adjust the front wheel inlet valve opening, and the front wheel inlet valve opening can be maintained. If the front wheel pressure state indicates that the front wheel boost pressure rate is too fast, the front wheel boost rate can be reduced by adjusting the front wheel inlet valve opening, so as to prevent the front wheel pressure from quickly reaching the locking critical point, so as to prevent the front wheel from quickly entering the locking state, thereby reducing the vehicle braking distance and enhancing the safety of vehicle braking to a certain extent. In addition, by adjusting the front wheel inlet valve opening to reduce the front wheel boost rate, the vehicle powertrain suspension can be prevented from hitting the limit, so as to prevent the vehicle from emitting collision noise and collision vibration inside, and to a certain extent ensure the comfort of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic flow chart of a front wheel pressure adjustment method provided by an embodiment of the present invention;

[0036] Figure 2 A schematic flow chart of a method for determining a front wheel pressure state provided by an embodiment of the present invention;

[0037] Figure 3 A schematic flow chart of another front wheel pressure adjustment method provided by an embodiment of the present invention;

[0038] Figure 4 A schematic flow chart of a method for adjusting the opening of a front wheel fluid inlet valve according to a brake pedal speed provided by an embodiment of the present invention;

[0039] Figure 5 A schematic flow chart of another front wheel pressure adjustment method provided by an embodiment of the present invention;

[0040] Figure 6 A schematic structural diagram of a front wheel pressure regulating device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] Figure 1 This is a flow chart of a front wheel pressure regulation method provided by an embodiment of the present invention. This embodiment can be applied to the control of the front wheel boost rate by the integrated braking control system of a new energy vehicle. The method can be executed by a front wheel pressure regulation device, which can be implemented in hardware and / or software. The method specifically includes the following steps:

[0044] S110: Acquire a brake pedal travel signal.

[0045] Specifically, the brake pedal travel signal includes the movement information of the brake pedal when the driver steps on it. When the driver steps on the brake pedal, the brake pedal will move under the action of the driver's force. The movement of the brake pedal can be monitored in real time through the pedal travel sensor. The pedal travel sensor can generate a brake pedal travel signal based on the movement of the brake pedal.

[0046] S120: Determine the front wheel pressure state according to the brake pedal travel signal.

[0047] Specifically, the front wheel pressure state refers to whether the front wheel boost pressure rate is too fast, so that it can be judged whether the front wheel pressure will quickly reach the locking critical point according to the front wheel pressure state, so that the front wheel quickly enters the locking state. The brake pedal travel signal can reflect the movement of the brake pedal stepped by the driver, so that the speed of the driver stepping on the brake pedal can be judged according to the movement of the brake pedal, so as to determine whether the degree of vehicle axle load transfer is too large during the driver stepping on the brake pedal. If the degree of axle load transfer is too large during the braking process, the speed of the front wheel of the vehicle to establish the braking pressure will be too fast, that is, the front wheel boost rate is too fast. If the front wheel boost rate is too fast, the front wheel pressure will quickly reach the locking critical point, so that the front wheel will quickly enter the locking state, thereby increasing the braking distance of the vehicle. In addition, the front wheel boost rate is too fast, which will also cause the powertrain suspension of the vehicle to hit the limit, causing the vehicle to emit collision noise and collision vibration, thereby reducing the comfort of the vehicle.

[0048] In summary, based on the brake pedal travel signal, the speed at which the driver steps on the brake pedal can be determined, thereby determining whether the degree of vehicle axle load transfer is too large during the driver's stepping on the brake pedal, and further determining the front wheel pressure state.

[0049] S130: According to the front wheel pressure state, adjust the opening of the front wheel fluid inlet valve or maintain the opening of the front wheel fluid inlet valve to control the front wheel boost rate.

[0050] Specifically, if the front wheel pressure state indicates that the front wheel boost pressure rate is too fast, it means that the front wheel boost rate needs to be adjusted as soon as possible to prevent the front wheel pressure from quickly reaching the critical point of locking. At this time, the opening of the front wheel inlet valve can be adjusted to reduce the boost rate of the front wheel, prevent the front wheel pressure from quickly reaching the critical point of locking, and prevent the front wheel from quickly entering the locking state, thereby reducing the braking distance of the vehicle and enhancing the safety of vehicle braking to a certain extent. In addition, by adjusting the opening of the front wheel inlet valve to reduce the front wheel boost rate, the powertrain suspension of the vehicle can also be prevented from hitting the limit, avoiding collision noise and collision vibration inside the vehicle, and ensuring the comfort of the vehicle to a certain extent. If the front wheel pressure state indicates that the front wheel boost rate is normal, the front wheel pressure will not quickly reach the critical point of locking. At this time, there is no need to adjust the opening of the front wheel inlet valve, and the opening of the front wheel inlet valve can be maintained.

[0051] The embodiment of the present invention can reflect the movement of the brake pedal stepped by the driver according to the brake pedal stroke signal by acquiring the brake pedal stroke signal, so that the speed of the driver stepping on the brake pedal can be judged according to the movement of the brake pedal, so as to determine whether the degree of vehicle axle load transfer is too large during the driver stepping on the brake pedal, and thus determine the front wheel pressure state. If the front wheel pressure state indicates that the front wheel boost pressure rate is normal, there is no need to adjust the front wheel inlet valve opening, and the front wheel inlet valve opening can be maintained. If the front wheel pressure state indicates that the front wheel boost pressure rate is too fast, the front wheel boost rate can be reduced by adjusting the front wheel inlet valve opening, so as to prevent the front wheel pressure from quickly reaching the locking critical point, so as to prevent the front wheel from quickly entering the locking state, thereby reducing the vehicle braking distance and enhancing the safety of vehicle braking to a certain extent. In addition, by adjusting the front wheel inlet valve opening to reduce the front wheel boost rate, the vehicle powertrain suspension can be prevented from hitting the limit, so as to prevent the vehicle from emitting collision noise and collision vibration inside, and to a certain extent ensure the comfort of the vehicle.

[0052] Optionally, the method for obtaining a brake pedal travel signal includes: detecting the brake pedal travel by a pedal travel sensor to obtain a brake pedal travel signal.

[0053] Specifically, the pedal travel sensor is installed near the designated pedal of the car. It can directly detect the degree to which the driver presses the brake pedal, that is, the movement of the brake pedal when the driver presses it, and generate a brake pedal travel signal reflecting the driver's driving intention according to the degree to which the driver presses the brake pedal.

[0054] Optionally, the front wheel pressure state includes abnormal pressure increase and normal pressure increase.

[0055] Specifically, abnormal pressure increase means that the speed of the front wheel brake pressure building exceeds the preset maximum front wheel brake pressure building speed, at which time the speed of the front wheel brake pressure building will cause the front wheel pressure to quickly reach the critical point of locking. Normal pressure increase means that the speed of the front wheel brake pressure building is within the preset front wheel brake pressure building speed range, at which time the speed of the front wheel brake pressure building can prevent the front wheel pressure from quickly reaching the critical point of locking.

[0056] Based on the above embodiment, the process of determining the front wheel pressure state is further described in detail: illustratively, Figure 2 A flow chart of a method for determining the front wheel pressure state provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the method specifically comprises the following steps:

[0057] S210: Calculate the brake pedal speed according to the brake pedal travel signal.

[0058] Specifically, the brake pedal travel signal includes pedal displacement and pedal depression time.

[0059] The pedal displacement refers to the distance the brake pedal moves when the driver steps on it, and the pedal stepping time refers to the time it takes for the brake pedal to move when the driver steps on it. The brake pedal rate can be calculated based on the pedal displacement and the pedal stepping time, i.e., the brake pedal rate = pedal displacement / pedal stepping time.

[0060] S220, determine whether the brake pedal speed is greater than or equal to the target speed; if so, execute S230; if not, execute S240.

[0061] Specifically, the target speed refers to a brake pedal speed that will cause the speed at which the front wheel brake pressure builds up to exceed a preset maximum front wheel brake pressure build-up speed value.

[0062] S230: The front wheel pressure state is an abnormal boost state.

[0063] Specifically, when the brake pedal rate is greater than or equal to the target rate, the speed at which the front wheel brake pressure is established will exceed the preset maximum front wheel brake pressure establishment speed. At this time, the front wheel pressure state is an abnormal boost state, and the speed at which the front wheel brake pressure is established will cause the front wheel pressure to quickly reach the locking critical point.

[0064] S240: The front wheel pressure state is in the normal boost state.

[0065] Specifically, when the brake pedal rate is lower than the target rate, the speed at which the front wheel brake pressure is established will be within a preset range of the front wheel brake pressure establishment speeds. At this time, the front wheel pressure state is in a normal boost state, and the speed at which the front wheel brake pressure is established can prevent the front wheel pressure from quickly reaching the locking critical point.

[0066] In summary, the above method can monitor the front wheel pressure state in real time through the brake pedal travel signal, so that the abnormal boost state can be discovered in time, and the front wheel pressure state can be quickly adjusted to the normal boost state, so as to prevent the front wheel pressure from quickly reaching the critical point of locking, so that the front wheel will not quickly enter the locking state, thereby reducing the braking distance of the vehicle and enhancing the safety of vehicle braking to a certain extent. In addition, it can also prevent the vehicle's powertrain suspension from hitting the limit, avoid collision noise and collision vibration inside the vehicle, and ensure the comfort of the vehicle to a certain extent.

[0067] Figure 3 A flow chart of another front wheel pressure adjustment method provided by an embodiment of the present invention is shown as follows: Figure 3 As shown, the method specifically comprises the following steps:

[0068] S310: Acquire a brake pedal travel signal.

[0069] S320: Calculate the brake pedal rate according to the brake pedal travel signal.

[0070] S330, determine whether the brake pedal speed is greater than or equal to the target speed; if so, execute S340; if not, execute S350.

[0071] S340: The front wheel pressure state is in an abnormal boost state, and the front wheel fluid inlet valve opening is adjusted according to the brake pedal speed.

[0072] Among them, when the brake pedal speed is greater than or equal to the target speed, different brake pedal speeds correspond to different openings of the front wheel inlet valve. Therefore, the opening of the front wheel inlet valve can be adjusted according to the brake pedal speed, reducing the front wheel boost rate, and then reducing the amount of front wheel brake fluid entering per unit time, thereby reducing the pressure of the front wheel.

[0073] S350: The front wheel pressure state is in the normal boost state, and the front wheel fluid inlet valve opening is maintained.

[0074] In summary, when the front wheel pressure state is in an abnormal boost state, the front wheel fluid inlet valve opening can be adjusted to reduce the boost rate of the front wheel, prevent the front wheel pressure from quickly reaching the critical point of locking, and prevent the front wheel from quickly entering the locking state, thereby reducing the braking distance of the vehicle and enhancing the safety of vehicle braking to a certain extent. In addition, by adjusting the front wheel fluid inlet valve opening to reduce the front wheel boost rate, the vehicle's powertrain suspension can be prevented from hitting the limiter, avoiding collision noise and collision vibration inside the vehicle, and ensuring the comfort of the vehicle to a certain extent.

[0075] Based on the above embodiment, the process of adjusting the opening of the front wheel fluid inlet valve according to the brake pedal speed is further described in detail: for example, Figure 4 A flow chart of a method for adjusting the opening of a front wheel fluid inlet valve according to a brake pedal speed provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, the method specifically comprises the following steps:

[0076] S410: Adjust the duty cycle of the pulse signal according to the brake pedal speed.

[0077] Specifically, the duty cycle of the pulse signal is adaptively reduced or increased according to the brake pedal rate.

[0078] S420: Obtaining a regulating current according to the pulse signal for adjusting the duty cycle.

[0079] Specifically, a pulse signal for adjusting the duty cycle is input into the driving circuit, and a regulated current output by the driving circuit can be obtained.

[0080] S430: Adjust the opening of the front wheel fluid inlet valve according to the adjustment current.

[0081] Specifically, the front wheel inlet valve moves the valve core position under the control of the regulating current, thereby adjusting the opening of the front wheel inlet valve, reducing the inflow of brake fluid, and thus reducing the front wheel pressure.

[0082] Figure 5 A flow chart of another front wheel pressure adjustment method provided by an embodiment of the present invention is shown as follows: Figure 6 As shown, the method specifically comprises the following steps:

[0083] S510: Acquire a brake pedal travel signal.

[0084] S520: Calculate the brake pedal speed according to the brake pedal travel signal.

[0085] S630, determine whether the brake pedal speed is greater than or equal to the target speed; if so, execute S540; if not, execute S570.

[0086] S540: The front wheel pressure state is in an abnormal boost state, and the front wheel fluid inlet valve opening is adjusted according to the brake pedal speed.

[0087] S550. Determine whether the brake pedal stroke reaches the maximum pedal stroke according to the brake pedal stroke signal.

[0088] Specifically, the brake pedal stroke signal includes a pedal displacement, and by determining whether the pedal displacement is equal to a maximum pedal stroke, it can be determined whether the brake pedal stroke reaches the maximum pedal stroke. The maximum pedal stroke is the maximum distance that the brake pedal can move, that is, the maximum pedal displacement of the brake pedal.

[0089] S560: If the brake pedal stroke reaches the maximum pedal stroke, the front wheel pressure adjustment is terminated and the front wheel anti-lock braking is started.

[0090] Specifically, when the brake pedal stroke reaches the maximum pedal stroke, the front wheel pressure will eventually quickly reach the locking critical point. When the front wheel pressure reaches the locking critical point, it is necessary to first end the adjustment of the front wheel pressure, and then start the front wheel anti-lock braking to prevent the vehicle from sliding due to sudden locking of the front wheel, thereby improving the safety of the vehicle.

[0091] S570: The front wheel pressure state is in the normal boost state, and the front wheel fluid inlet valve opening is maintained.

[0092] Optionally, the front wheel boost rate is less than or equal to 800 bar / s.

[0093] Among them, the maximum front wheel boost rate is 800 bar / s, and each adjustment of the front wheel boost rate must be less than or equal to 800 bar / s.

[0094] Figure 6 A schematic diagram of the structure of a front wheel pressure regulating device provided by an embodiment of the present invention is shown in FIG. Figure 6 As shown, the front wheel pressure regulating device includes:

[0095] A pedal travel signal acquisition module 610 is used to acquire a brake pedal travel signal;

[0096] A front wheel pressure state determination module 620, for determining a front wheel pressure state according to a brake pedal travel signal;

[0097] The front wheel pressure control module 630 is used to adjust the opening of the front wheel fluid inlet valve or maintain the opening of the front wheel fluid inlet valve according to the front wheel pressure state to control the front wheel boost rate.

[0098] In the embodiment of the present invention, the brake pedal stroke signal is acquired by the pedal stroke signal acquisition module 610. The front wheel pressure state determination module 620 can reflect the movement of the brake pedal stepped on by the driver according to the brake pedal stroke signal, so as to judge the speed of the driver stepping on the brake pedal according to the movement of the brake pedal, thereby determining whether the degree of vehicle axle load transfer is too large during the driver stepping on the brake pedal, thereby determining the front wheel pressure state. The front wheel pressure control module 630 can adjust the opening of the front wheel inlet valve or maintain the opening of the front wheel inlet valve according to the front wheel pressure state to control the front wheel boost rate. If the front wheel pressure state indicates that the front wheel boost pressure rate is normal, there is no need to adjust the opening of the front wheel inlet valve, and the opening of the front wheel inlet valve can be maintained. If the front wheel pressure state indicates that the front wheel boost pressure rate is too fast, the front wheel boost rate can be reduced by adjusting the opening of the front wheel inlet valve to prevent the front wheel pressure from quickly reaching the locking critical point, so that the front wheel can avoid quickly entering the locking state, thereby reducing the vehicle braking distance and enhancing the safety of vehicle braking to a certain extent. In addition, by adjusting the opening of the front wheel inlet valve to reduce the front wheel boost rate, the vehicle's powertrain suspension can be prevented from hitting the limiter, avoiding initial collision noise and collision vibration inside the vehicle, and ensuring the comfort of the vehicle to a certain extent.

[0099] Optionally, a pedal stroke signal acquisition module is specifically used to detect the brake pedal stroke through a pedal stroke sensor to acquire a brake pedal stroke signal.

[0100] Optionally, the front wheel pressure state includes abnormal pressure increase and normal pressure increase;

[0101] The front wheel pressure state determination module includes:

[0102] A brake pedal speed calculation unit, used for calculating a brake pedal speed according to a brake pedal travel signal;

[0103] A front wheel pressure state determination module, used to determine whether a brake pedal speed is greater than or equal to a target speed;

[0104] If yes, the front wheel pressure state is an abnormal boost state;

[0105] If not, the front wheel pressure state is a normal boost state.

[0106] The front wheel pressure control module includes:

[0107] a first front wheel pressure control unit, for adjusting the opening of the front wheel fluid inlet valve according to the brake pedal speed if the front wheel pressure state is in an abnormal boost state;

[0108] The second front wheel pressure control unit is used to maintain the opening of the front wheel fluid inlet valve if the front wheel pressure state is in a normal boost state.

[0109] Optionally, the first front wheel pressure control unit is specifically used for:

[0110] According to the brake pedal speed, the duty cycle of the pulse signal is adjusted;

[0111] According to the pulse signal of adjusting the duty cycle, the regulating current is obtained;

[0112] Adjust the opening of the front wheel fluid inlet valve according to the adjustment current.

[0113] Optionally, the front wheel pressure regulating device also includes:

[0114] A maximum pedal stroke determination module, used for determining whether the brake pedal stroke reaches the maximum pedal stroke according to the brake pedal stroke signal;

[0115] The front wheel anti-lock brake activation module is used to end the front wheel pressure regulation and activate the front wheel anti-lock brake if the brake pedal travel reaches the maximum pedal travel.

[0116] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the front wheel pressure adjustment method provided by any embodiment of the present invention is implemented.

[0117] The computer storage medium of the embodiment of the present invention may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. The computer-readable storage medium includes (a non-exhaustive list): an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device or device.

[0118] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, the data signal carrying a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0119] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0120] Computer program code for performing the disclosed operations may be written in one or more programming languages ​​or a combination of multiple programming languages, including object-oriented programming languages ​​such as Java, Smalltalk, C++, Ruby, Go, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may 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 may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet).

[0121] It will be appreciated by those skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

[0122] In general, various embodiments of the present invention can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor or other computing device, although the present invention is not limited thereto.

[0123] Embodiments of the present invention may be implemented by executing computer program instructions by a data processor of a mobile device, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0124] The block diagram of any logic flow in the accompanying drawings of the present invention may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. The computer program may be stored in a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital versatile discs DVD or CD discs), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (Digital Signal Processing, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a programmable logic device (Field-Programmable Gate Array, FGPA) and a processor based on a multi-core processor architecture.

[0125] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0126] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A front wheel pressure adjustment method, characterized in that: include: Acquire brake pedal travel signal; determining a front wheel pressure state according to the brake pedal travel signal; According to the front wheel pressure state, adjusting the opening of the front wheel fluid inlet valve or maintaining the opening of the front wheel fluid inlet valve to control the front wheel boost rate; The front wheel pressure state includes abnormal pressure increase and normal pressure increase; A method for determining a front wheel pressure state, comprising: calculating a brake pedal rate according to the brake pedal travel signal; determining whether the brake pedal speed is greater than or equal to a target speed; If yes, the front wheel pressure state is an abnormal boost state; If not, the front wheel pressure state is a normal boost state.

2. The front wheel pressure adjustment method according to claim 1, characterized in that: The method for obtaining a brake pedal travel signal comprises: The brake pedal stroke is detected by a pedal stroke sensor to obtain the brake pedal stroke signal.

3. The front wheel pressure adjustment method according to claim 1, characterized in that: According to the front wheel pressure state, adjusting the opening of the front wheel fluid inlet valve or maintaining the opening of the front wheel fluid inlet valve includes: If the front wheel pressure state is an abnormal boost state, adjusting the front wheel fluid inlet valve opening according to the brake pedal speed; If the front wheel pressure state is in a normal boost state, the opening of the front wheel fluid inlet valve is maintained.

4. The front wheel pressure adjustment method according to any one of claims 1 to 2, characterized in that: The brake pedal travel signal includes a pedal displacement and a pedal depression time.

5. The front wheel pressure adjustment method according to claim 3, characterized in that: The method for adjusting the opening of the front wheel fluid inlet valve according to the brake pedal speed comprises: adjusting a duty cycle of the pulse signal according to the brake pedal speed; Obtaining a regulating current according to the pulse signal with the duty cycle adjusted; The opening of the front wheel fluid inlet valve is adjusted according to the adjustment current.

6. The front wheel pressure adjustment method according to claim 5, characterized in that: After adjusting the opening of the front wheel fluid inlet valve, the method further comprises: determining, according to the brake pedal travel signal, whether the brake pedal travel has reached a maximum pedal travel; If the brake pedal travel reaches the maximum pedal travel, the front wheel pressure regulation is terminated and the front wheel anti-lock braking is activated.

7. The front wheel pressure adjustment method according to claim 1, characterized in that: The front wheel boost rate is less than or equal to 800 bar / s.

8. A front wheel pressure regulating device, characterized in that: include: A pedal stroke signal acquisition module, used for acquiring a brake pedal stroke signal; A front wheel pressure state determination module, used for determining the front wheel pressure state according to the brake pedal travel signal; A front wheel pressure control module, used to adjust the opening of the front wheel fluid inlet valve or maintain the opening of the front wheel fluid inlet valve according to the front wheel pressure state, so as to control the front wheel boost rate; The front wheel pressure state includes abnormal pressure increase and normal pressure increase; The front wheel pressure state determination module includes: a brake pedal speed calculation unit, configured to calculate a brake pedal speed according to the brake pedal travel signal; A front wheel pressure state determination module, used to determine whether the brake pedal speed is greater than or equal to a target speed; If yes, the front wheel pressure state is an abnormal boost state; If not, the front wheel pressure state is a normal boost state.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the front wheel pressure regulating method as described in any one of claims 1 to 7 is implemented.

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