Braking system for achieving perfect braking of automobile based on automobile ESP system and control method of braking system

Abstract

The invention discloses a braking system for achieving perfect braking of an automobile based on an automobile ESP system. The automobile comprises wheels, a brake and a hydraulic control unit. The ESP system is connected with the hydraulic control unit through a signal circuit; a braking control module is arranged in the ESP system and analyzes various signals of an automobile body, calculates the driving state of the automobile and regulates and reduces braking force when the automobile is about to stop, and therefore stable braking of the whole automobile is achieved. The invention further discloses a control method of the braking system. By the adoption of the technical scheme, disappearance of bad experience such as the nodding effect in the braking process is weakened or even eliminated, and stable braking or more perfect braking of an automobile is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile braking control. More specifically, the present invention relates to a braking system for achieving perfect braking of an automobile based on an automobile ESP system. The present invention also relates to a control method of the braking system. Background Art

[0002] ESP (Electronic Stability Control System) is designed to improve the stability and handling performance of the car. It is the most mainstream, widely used and market-leading car control system in the automotive industry. Other manufacturers also call similar systems ESC (Electronic Stability Control System), DSC (Dynamic Stability Control System), VSC (Vehicle Stability Control System), etc. Although the names are different, the basic principle of this type of system is to collect signals through sensors, then analyze them with the control module, and finally issue execution instructions to maintain the stability of the car.

[0003] Chinese patent document: "A device for solving the instability of automobile braking", patent (application) number: 202221635114.X, its technical solution is:

[0004] "The braking stability of the original brake is improved by adding a pump body."

[0005] Defects of the prior art:

[0006] Although the technical solution recorded in patent document 202221635114.X can solve the stability problem during braking, the mechanical structure of the brake is complex and it is difficult to truly apply it to the existing braking system.

[0007] In order to achieve true marketization and benefit consumers, in addition to designing universal systems and control methods, it is also necessary to conduct targeted research, analysis, improvement, design, testing and application of various braking systems.

[0008] In existing automobile applications, there is a problem of unstable braking and stopping, especially when braking to a stop - that is, the moment when the car brakes at a low speed until it stops. The occupants of the car will experience a "nodding effect" due to the sinking of the front of the car and inertia, and their bodies may be thrown out and their heads may swing forward uncontrollably. This phenomenon seriously affects the user experience of the occupants of the car and occurs very frequently.

[0009] To reduce or eliminate this phenomenon, the driver needs to have rich experience and skilled operation, but long-term precise operation will increase the feeling of fatigue.

[0010] The ESP system integrates many functions for the stability, comfort and safety of the car, such as ABS (anti-lock braking system), TCS (traction control system), HBA (emergency brake assist system), etc., but there is very little brake stability system, which does not play a big role when the car stops. In order to give passengers a better riding experience when the car stops, it needs to be improved.

[0011] Therefore, the technical solutions recorded in the above-mentioned technical documents and the related technical solutions currently in public use have not been able to solve the problems and defects of "unstable braking and parking" existing in the prior art. Summary of the invention

[0012] The invention provides a braking system for realizing perfect braking of a vehicle based on an ESP system of the vehicle, and the purpose of the braking system is to realize stable and more perfect braking of the vehicle.

[0013] In order to achieve the above object, the technical solution adopted by the present invention is:

[0014] The present invention discloses a braking system for achieving perfect braking of an automobile based on an automobile ESP system. The automobile comprises wheels, brakes, and a hydraulic control unit. The ESP system is connected to the hydraulic control unit via a signal circuit. A braking control module is arranged in the ESP system. When the automobile is about to stop, the braking control module analyzes various signals of the automobile body, calculates the driving state of the automobile, and regulates and reduces the braking force, thereby achieving smooth braking of the entire vehicle.

[0015] The automobile is provided with a vehicle speed signal sensor; the vehicle speed signal sensor is connected with the ESP system through a signal circuit.

[0016] The automobile is provided with a brake pedal signal sensor; the brake pedal signal sensor is connected with the ESP system through a signal circuit.

[0017] The automobile is provided with an accelerator pedal signal sensor; the accelerator pedal signal sensor is connected with the ESP system through a signal circuit.

[0018] The automobile is provided with a brake master cylinder pressure signal sensor; the brake master cylinder pressure signal sensor is connected with the ESP system through a signal circuit.

[0019] The automobile is provided with an engine speed signal sensor; the engine speed signal sensor is connected with the ESP system through a signal circuit.

[0020] The ESP system is provided with ABS, EBD and TCS.

[0021] In order to achieve the same invention purpose as the above technical solution, the present invention also provides the above-mentioned control method of the braking system based on the automobile ESP system to achieve perfect braking of the automobile, and its technical solution is:

[0022] When a moving car needs to stop, when the car speed drops to a certain critical value, the speed signal will be transmitted to the ESP system; at the same time, the ESP system will further analyze the corresponding brake pedal signal, accelerator pedal signal, brake master cylinder pressure signal, and engine speed signal;

[0023] When the above signal determines that the driver is about to brake to stop the car, the ESP system issues a control command to reduce the braking force after the speed drops to the set value;

[0024] After receiving the control command to reduce the braking force, the braking system begins to release pressure. The braking force exerted on the brake disc is reduced due to the pressure release, and the brake disc drives the wheels to decelerate with reduced acceleration until the vehicle stops completely, and then the entire system returns to its original state.

[0025] The present invention adopts the above-mentioned technical scheme to weaken or even eliminate the adverse experience such as the "nodding effect" when braking, so as to achieve smooth or more perfect braking of the car; it can be applied to the braking system using ESP, which can improve the braking performance of the car itself, especially solve the problem of instability when the car brakes, and passengers will have a better experience when the car brakes; the system has versatility, applicability and practicality, and can be improved and upgraded using the original car ESP system without increasing the mechanical structure, and the control strategy can be adjusted by adding a control module, so that the technology can be more easily realized in the market; due to its versatility, it can not only support the improvement of the ESP system, but also be suitable for the improvement of control systems of other manufacturers such as ESC, DSC, and VSC. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the braking system of the present invention. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0028] like Figure 1The structure of the present invention is a braking system based on the ESP system of a car to achieve perfect braking of the car. The car includes wheels, brakes, and a hydraulic control unit; the ESP system is connected to the hydraulic control unit through a signal circuit. The present invention is based on the prior art and improves the most widely used ESP system on the market. It can achieve perfect braking of the car and is easy to achieve wide market application.

[0029] In order to solve the problems existing in the prior art and overcome its defects, and to achieve the invention purpose of achieving a smooth and more perfect braking of a car, the technical solution adopted by the present invention is:

[0030] like Figure 1 As shown, the braking system of the present invention realizes perfect braking of a vehicle based on the ESP system of the vehicle, and a braking control module is arranged in the ESP system. When the vehicle is about to stop, the braking control module analyzes various signals of the vehicle body, calculates the driving state of the vehicle, and regulates and reduces the braking force, thereby realizing smooth braking of the whole vehicle.

[0031] In the existing ESP system of the car, a brake control module is added, which can adjust the control power at specific times to achieve stable or perfect braking.

[0032] The system design of the present invention is as follows: for vehicles using the ESP system, in addition to the original control module, an additional module for solving the braking stability problem, namely the braking control module, is added. When the vehicle is about to stop, it will analyze various signals of the vehicle body, calculate the driving state of the vehicle, and adjust and reduce the braking force, thereby achieving the so-called "perfect braking" effect.

[0033] The ESP and other similar systems mentioned above refer to systems used by various car manufacturers, which are related to vehicle body stability, safety and comfort, and can regulate the braking force of the braking system; all of the above-mentioned systems can be used as carriers for adding brake control modules.

[0034] The technical effects of adopting the above technical solution are:

[0035] 1. The present invention can be applied to a braking system using ESP, which can improve the braking performance of the car itself, especially solve the problem of instability when the car stops, eliminate or weaken the "nodding effect" when the car stops, and passengers will have a better experience when the car stops, so that the car can stop stably and perfectly;

[0036] 2. The system is universal, applicable and practical. It can be improved and upgraded using the original vehicle ESP system without adding mechanical structure. By adding control modules and adjusting the control strategy, the technology can be more easily marketed.

[0037] 3. The system and its control module are universal, so they can not only support the improvement of ESP system, but also are suitable for the improvement of control systems of other manufacturers such as ESC, DSC, VSC, etc.

[0038] The function of the added brake control module is to adjust the control power. The more special function feature is that during the vehicle braking process, the braking force can be reduced at a certain rate of change when the vehicle is at a low speed, but the reduced braking force can still stop the vehicle in the end.

[0039] The specific structure of the present invention is arranged as follows:

[0040] The automobile is provided with a vehicle speed signal sensor; the vehicle speed signal sensor is connected with the ESP system through a signal circuit.

[0041] The automobile is provided with a brake pedal signal sensor; the brake pedal signal sensor is connected with the ESP system through a signal circuit.

[0042] The automobile is provided with an accelerator pedal signal sensor; the accelerator pedal signal sensor is connected with the ESP system through a signal circuit.

[0043] The automobile is provided with a brake master cylinder pressure signal sensor; the brake master cylinder pressure signal sensor is connected with the ESP system through a signal circuit.

[0044] The automobile is provided with an engine speed signal sensor; the engine speed signal sensor is connected with the ESP system through a signal circuit.

[0045] Although the present invention is designed based on the most common ESP system, due to its versatility, it can also be applied to similar systems of other manufacturers such as ESC (electronic stability control system), DSC (dynamic stability control system), VSC (vehicle stability control system), and the implementation mode and method are the same.

[0046] The ESP system is provided with ABS, EBD and TCS.

[0047] The added brake control module can be integrated into the ESP system at the same level as sub-modules such as ABS (lock braking system), TCS (traction control system), EBD (electronic brake force distribution system), etc., and can also be integrated into these sub-modules.

[0048] The submodule refers to a submodule that is integrated into the automobile ESP system, is related to vehicle body stability, safety and comfort, and can adjust and control power; the added brake control module can be hardware or software, and can be set as a pump body, valve or cylinder with hydraulic control function, or a software module with the function of outputting execution signals to the hydraulic control unit.

[0049] The control strategy of the present invention:

[0050] In order to achieve the same invention purpose as the above technical solution, the present invention also provides the above-mentioned control method of the braking system based on the automobile ESP system to achieve perfect braking of the automobile, and its technical solution is:

[0051] After adding this module, the difference between the operation process of the present invention and the existing control system is:

[0052] When a moving car needs to stop, when the car speed drops to a certain critical value, the speed signal will be transmitted to the ESP system; at the same time, the ESP system will further analyze the corresponding brake pedal signal, accelerator pedal signal, brake master cylinder pressure signal, and engine speed signal;

[0053] When the above signal determines that the driver is about to brake to stop the car, the ESP system issues a control command to reduce the braking force after the speed drops to the set value;

[0054] After receiving the control command to reduce the braking force, the braking system begins to release pressure. The braking force exerted on the brake disc is reduced due to the pressure release, and the brake disc drives the wheels to decelerate with reduced acceleration until the vehicle stops completely, and then the entire system returns to its original state.

[0055] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A braking system for achieving perfect stopping of a car based on an ESP system of a car, wherein the car comprises wheels, brakes, and a hydraulic control unit; the ESP system is connected to the hydraulic control unit through a signal circuit; and the characteristics are: A brake control module is provided in the ESP system. When the vehicle is about to stop, the brake control module analyzes various signals of the vehicle body, calculates the driving state of the vehicle, and regulates and reduces the braking force, thereby achieving a smooth brake stop of the entire vehicle.

2. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The automobile is provided with a vehicle speed signal sensor; the vehicle speed signal sensor is connected with the ESP system through a signal circuit.

3. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The automobile is provided with a brake pedal signal sensor; the brake pedal signal sensor is connected with the ESP system through a signal circuit.

4. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The automobile is provided with an accelerator pedal signal sensor; the accelerator pedal signal sensor is connected with the ESP system through a signal circuit.

5. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The automobile is provided with a brake master cylinder pressure signal sensor; the brake master cylinder pressure signal sensor is connected with the ESP system through a signal circuit.

6. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The automobile is provided with an engine speed signal sensor; the engine speed signal sensor is connected with the ESP system through a signal circuit.

7. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The ESP system is provided with ABS.

8. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The ESP system is provided with EBD.

9. The braking system for achieving perfect stopping of a vehicle based on the ESP system of a vehicle according to claim 1, characterized in that: The ESP system is provided with TCS.

10. The method for controlling a braking system for achieving perfect stopping of a vehicle based on an ESP system of a vehicle according to any one of claims 1 to 9, characterized in that: When a moving car needs to stop, when the car speed drops to a certain critical value, the speed signal will be transmitted to the ESP system; at the same time, the ESP system will further analyze the corresponding brake pedal signal, accelerator pedal signal, brake master cylinder pressure signal, and engine speed signal; When the above signal determines that the driver is about to brake to stop the car, the ESP system issues a control command to reduce the braking force after the speed drops to the set value; After receiving the control command to reduce the braking force, the braking system begins to release pressure. The braking force exerted on the brake disc is reduced due to the pressure release, and the brake disc drives the wheels to decelerate with reduced acceleration until the vehicle stops completely, and then the entire system returns to its original state.

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