Master cylinder simulation brake pedal system and control method

Abstract

The invention relates to a brake pedal system, in particular to a master cylinder simulation brake pedal system and a control method. Comprising a mounting frame and a pedal body, the pedal body is rotatably mounted on the mounting frame, the pedal feeling simulator is arranged on the mounting frame, the pedal stroke sensor is mounted on the side, close to a pedal, of the mounting frame, and the pedal stroke sensor is mounted on the side, close to the pedal, of the mounting frame. The travel data acquisition module is connected with a pedal travel sensor, the analysis and calculation module is connected with the travel data acquisition module, the brake execution module is connected with the analysis and calculation module, and the brake intention of a driver can be input to a whole vehicle electronic control unit to wake up an EMB system by means of a sensor on a pedal. Therefore, decoupling between braking input and braking output is truly achieved, and comfortable feedback force is provided for a driver when the driver conducts pedal braking operation.

Description

Technical Field

[0001] The present invention relates to a brake pedal system, and in particular to a master cylinder analog brake pedal system and a control method therefor. Background Art

[0002] When an existing automotive brake booster actually works, a vacuum booster uses the principle that the engine sucks in air during operation to create a vacuum on one side of the booster, generating a pressure difference relative to the normal air pressure on the other side, and uses this pressure difference to enhance the braking thrust; an electric booster uses a motor to suck in air to achieve this function.

[0003] Nowadays, new energy vehicles are developing rapidly, various high-tech technologies are applied to vehicles, and technologies such as autonomous driving are becoming increasingly mature. Vehicle braking can already be fully electronically controlled. The driver's braking command only needs to be transmitted to the vehicle through an electrical signal to achieve braking, resulting in no longer requiring a booster to transmit pressure for braking. In the current market where electronically controlled braking systems prevail, brake boosters will be gradually phased out. However, due to the long-term driving operation habits and driving pleasure of drivers, when drivers perform braking, they still habitually step on the brake pedal and then control the vehicle's braking based on the feedback given by the brake pedal. Existing electronically controlled braking systems cannot meet this requirement. Summary of the Invention

[0004] The purpose of the present invention is to provide a master cylinder analog brake pedal system and a control method therefor, which can input the driver's braking intention to the vehicle electronic control unit through a sensor on the pedal to wake up the EMB system, thereby truly achieving decoupling between braking input and output, so as to provide a comfortable feedback force to the driver when the driver performs pedal braking operation.

[0005] To achieve the above purpose, a master cylinder analog brake pedal system and a control method therefor adopted by the present invention include a mounting bracket and a pedal body. The pedal body is rotatably mounted on the mounting bracket, and further includes a pedal feel simulator, a pedal travel sensor, a travel data acquisition module, an analysis and calculation module, and an execution braking module. The pedal feel simulator is arranged on the mounting bracket. The pedal travel sensor is mounted on one side of the mounting bracket close to the pedal. The travel data acquisition module is connected to the pedal travel sensor. The analysis and calculation module is connected to the travel data acquisition module. The execution braking module is connected to the analysis and calculation module.

[0006] The pedal feel simulator is used to provide a feedback of the pedal force value when the driver performs stepping braking.

[0007] The pedal travel sensor is used to monitor the operating displacement of the pedal and the braking operation time.

[0008] The stroke data acquisition module is configured to acquire the data information monitored by the pedal stroke sensor;

[0009] The analysis and calculation module is configured to analyze and calculate the data information acquired by the stroke data acquisition module;

[0010] The execution braking module generates a specified braking instruction based on the analysis and calculation result of the analysis and calculation module, and completes the corresponding braking operation based on the generated braking instruction.

[0011] Wherein, the pedal feel simulator includes a cylinder block, an inclined plane main piston, a U-shaped fork, a dust cover and a damping component. The cylinder block is fixedly installed on one side of the mounting bracket; the inclined plane main piston is slidably installed in the cylinder block; the U-shaped fork is connected to the inclined plane main piston and is rotatably connected to the pedal body; the dust cover is installed on one side of the cylinder block close to the U-shaped fork; the damping component is connected to the cylinder block and is used to provide feedback of the pedal force value.

[0012] Wherein, the stroke data acquisition module includes an operation time monitoring sub-module and a stepping distance monitoring sub-module. The operation time monitoring sub-module is connected to the pedal stroke sensor and is also connected to the analysis and calculation module; the stepping distance monitoring sub-module is connected to the pedal stroke sensor and is also connected to the analysis and calculation module;

[0013] The operation time monitoring sub-module is configured to acquire and record the duration of the operator's braking;

[0014] The stepping distance monitoring sub-module is configured to acquire and record the stepping distance of the operator's stepping on the brake.

[0015] Wherein, the analysis and calculation module includes a stepping distance classification sub-module and a stepping speed calculation sub-module. The stepping distance classification sub-module is connected to the stroke data acquisition module; the stepping speed calculation sub-module is connected to the stroke data acquisition module;

[0016] The stepping distance classification sub-module judges and classifies the stepping distance information acquired by the stroke data acquisition module based on the set stepping distance grouping and generates a specified braking level instruction;

[0017] The stepping speed calculation sub-module calculates the stepping speed of the operator based on the operation displacement amount and the braking operation time acquired by the stroke data acquisition module.

[0018] Wherein, the execution braking module includes an instruction integration sub-module and a braking control sub-module. The instruction integration sub-module is connected to the analysis and calculation module; the braking control sub-module is connected to the instruction integration sub-module;

[0019] The instruction integration sub-module generates the braking instruction based on the stepping speed calculated by the stepping speed calculation sub-module and the braking level instruction generated by the stepping distance grading sub-module;

[0020] The braking control sub-module completes the braking operation of the vehicle based on the braking instruction generated by the instruction integration sub-module.

[0021] Wherein, the damping component includes a conduit, a slave piston, an upper compression spring, a lower end cover, a lower compression spring and a damping pin. The conduit is installed in the cylinder block; the slave piston is slidably installed in the conduit; both sides of the upper compression spring are connected to the slave piston and the conduit respectively; the lower end cover is installed under the cylinder block; both sides of the lower compression spring are connected to the slave piston and the lower end cover; the damping pin is installed on one side of the lower end cover close to the slave piston.

[0022] Wherein, the instruction integration sub-module includes a stepping speed judgment unit and an instruction determination unit. The stepping speed judgment unit is connected to the analysis and calculation module; the instruction determination unit is connected to the stepping speed judgment unit;

[0023] The stepping speed judgment unit analyzes and judges the stepping speed calculated by the stepping speed calculation sub-module based on a set stepping speed range;

[0024] The instruction determination unit generates the braking instruction based on the analysis and judgment result of the stepping speed judgment unit and the braking level instruction.

[0025] A master cylinder analog braking pedal control method using the master cylinder analog braking pedal system, characterized by including the following steps,

[0026] When the user performs a braking operation through the pedal body, the pedal body gives the user a corresponding braking feedback force through the pedal feel simulator arranged on the mounting bracket;

[0027] During the process of the user stepping on the pedal body, the pedal stroke sensor monitors the operation displacement of the pedal body and the braking operation time;

[0028] The operation displacement of the pedal body and the braking operation time obtained by the stroke data acquisition module are analyzed and calculated by the analysis and calculation module;

[0029] The execution braking module performs corresponding braking operations according to the analysis and calculation results of the analysis and calculation module.

[0030] The master cylinder analog braking pedal system of the present invention, when a user performs a braking operation through the pedal body, the pedal body gives the user a corresponding braking feedback force through the pedal feel simulator provided on the mounting bracket. At the same time, during the process of the user stepping on the pedal body, the pedal stroke sensor monitors the operating displacement of the pedal body and the braking operation time. Then, the operating displacement of the pedal body and the braking operation time obtained by the stroke data acquisition module are analyzed and calculated by the analysis and calculation module. Finally, the brake execution module performs corresponding braking operations according to the analysis and calculation results of the analysis and calculation module. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the mounting structure of the pedal body of the present invention.

[0033] Figure 2 It is a schematic diagram of the mounting structure of the pedal feel simulator of the present invention.

[0034] Figure 3 It is a cross-sectional view of the pedal feel simulator of the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of the master cylinder analog braking pedal system of the present invention.

[0036] Figure 5 It is a schematic diagram of the structure of the stroke data acquisition module of the present invention.

[0037] Figure 6 It is a schematic diagram of the structure of the analysis and calculation module of the present invention.

[0038] Figure 7 It is a schematic diagram of the structure of the brake execution module of the present invention.

[0039] Figure 8 It is a schematic diagram of the structure of the instruction integration sub-module of the present invention.

[0040] Figure 9 It is a flowchart of the master cylinder analog braking pedal control method of the present invention.

[0041] In the figure: 1 - mounting bracket, 2 - pedal body, 3 - pedal feel simulator, 4 - pedal travel sensor, 5 - travel data acquisition module, 6 - analysis and calculation module, 7 - execution braking module, 301 - cylinder block, 302 - inclined main piston, 303 - U-shaped fork, 304 - dust cover, 305 - conduit, 306 - slave piston, 307 - upper compression spring, 308 - lower end cover, 309 - lower compression spring, 310 - damping pin, 501 - operation time monitoring sub-module, 502 - pedal travel monitoring sub-module, 601 - pedal travel grading sub-module, 602 - pedal speed calculation sub-module, 701 - instruction integration sub-module, 702 - braking control sub-module, 7011 - pedal speed judgment unit, 7012 - instruction determination unit. Detailed implementation

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0043] In the description of the present invention, it should be understood that the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0044] Please refer to Figures 1 to 8 , the present invention provides a master cylinder analog braking pedal system including a mounting bracket 1 and a pedal body 2. The pedal body 2 is rotatably mounted on the mounting bracket 1. Characteristically, it further includes a pedal feel simulator 3, a pedal travel sensor 4, a travel data acquisition module 5, an analysis and calculation module 6, and an execution braking module 7. The pedal feel simulator 3 is arranged on the mounting bracket 1. The pedal travel sensor 4 is mounted on one side of the mounting bracket 1 close to the pedal. The travel data acquisition module 5 is connected to the pedal travel sensor 4. The analysis and calculation module 6 is connected to the travel data acquisition module 5. The execution braking module 7 is connected to the analysis and calculation module 6;

[0045] The pedal feel simulator 3 is used to provide pedal force value feedback when the driver steps on the brake.

[0046] The pedal travel sensor 4 is used to monitor the operating displacement of the pedal and the braking operation time.

[0047] The travel data acquisition module 5 is used to acquire the data information monitored by the pedal travel sensor 4.

[0048] The analysis and calculation module 6 is used to analyze and calculate the data information acquired by the travel data acquisition module 5.

[0049] The execution braking module 7 generates a specified braking instruction based on the analysis and calculation result of the analysis and calculation module 6, and completes the corresponding braking operation based on the generated braking instruction.

[0050] Specifically, the pedal travel sensor 4 is an angle sensor. By fixing a magnet on the rocker arm and then using an MLEX 90371 Hall chip (the verification of the domestic Saizhuo 4688 chip has been completed) to detect the rotation position of the rocker arm, it is convenient to detect the operating displacement of the pedal by detecting the rotation angle of the pedal body 2. At the same time, when the user steps on the pedal body 2, the electrical signals detected by the pedal travel sensor 4 can be used to detect and collect data such as the braking time.

[0051] When the user performs a braking operation through the pedal body 2, the pedal body 2 gives the user a corresponding braking feedback force through the pedal feel simulator 3 arranged on the mounting bracket 1. At the same time, during the process of the user stepping on the pedal body 2, the pedal travel sensor 4 monitors the operating displacement of the pedal body 2 and the braking operation time. Then, the operating displacement of the pedal body 2 and the braking operation time obtained by the travel data acquisition module 5 are analyzed and calculated by the analysis and calculation module 6. Finally, the execution braking module 7 performs the corresponding braking operation according to the analysis and calculation result of the analysis and calculation module 6.

[0052] Further, please refer to Figure 3 , the pedal feel simulator 3 includes a cylinder block 301, an inclined main piston 302, a U-shaped fork 303, a dust cover 304 and a damping component. The cylinder block 301 is fixedly installed on one side of the mounting bracket 1; the inclined main piston 302 is slidably installed in the cylinder block 301; the U-shaped fork 303 is connected to the inclined main piston 302 and is rotatably connected to the pedal body 2; the dust cover 304 is installed on one side of the cylinder block 301 close to the U-shaped fork 303; the damping component is connected to the cylinder block 301 and is used to provide pedal force value feedback.

[0053] Further, please refer to Figure 3 , the damping component includes a conduit 305, a slave piston 306, an upper compression spring 307, a lower end cover 308, a lower compression spring 309 and a damping pin 310. The conduit 305 is installed in the cylinder block 301; the slave piston 306 is slidably installed in the conduit 305; both sides of the upper compression spring 307 are connected to the slave piston 306 and the conduit 305 respectively; the lower end cover 308 is installed under the cylinder block 301; both sides of the lower compression spring 309 are connected to the slave piston 306 and the lower end cover 308; the damping pin 310 is installed on one side of the lower end cover 308 close to the slave piston 306.

[0054] In this embodiment, the cylinder block 301 is fixedly arranged on the mounting bracket 1 by bolts. A sliding cylindrical platform for mounting the inclined surface main piston 302 is arranged at the top of the cylinder block 301. The lower end cover 308 is arranged below the cylinder block 301 through threaded cooperation;

[0055] The outside of the inclined surface main piston 302 slidably arranged inside the cylinder block 301 is connected with the U-shaped fork 303. The U-shaped fork 303 is matched with the movable ball groove arranged on the inclined surface main piston 302 through a spherical head arranged. The U-shaped fork 303 is rotatably connected with the pedal body 2. When the user steps on the pedal body 2, the pedal body 2 will squeeze the U-shaped fork 303. Then, driven by the pedal body 2, the U-shaped fork 303 will push the inclined surface main piston 302 to slide above the cylinder block 301. A dust cover 304 is arranged at the connection position between the U-shaped fork 303 and the pedal body 2. By arranging the dust cover 304, the stability of the connection of the U-shaped fork 303 can be ensured;

[0056] A slave piston 306 is further arranged inside the cylinder block 301. An arc surface for cooperating with the inner inclined surface of the inclined surface main piston 302 is arranged on the side of the plug cover arranged at the top of the slave piston 306. When the inclined surface main piston 302 slides, the slave piston 306 will move downward under the action of the inclined surface main piston 302;

[0057] The conduit 305 is arranged at the connection position between the cylinder block 301 and the lower end cover 308. An upper compression spring 307 is arranged between the upper surface of the conduit 305 and the lower step surface below the plug cover at the top of the slave piston 306. A lower compression spring 309 is arranged between the bottom of the slave piston 306 and the inner side of the lower end cover 308. At the same time, a damping pin 310 is further arranged inside the lower end cover 308. Through the upper compression spring 307, the lower compression spring 309 and the damping pin 310, a corresponding reaction force can be given to the slave piston 306 when the slave piston 306 moves downward, thereby giving an operator a force value feedback, so that a driver can obtain a corresponding feedback force when stepping on the pedal body 2. Moreover, as the driver continuously presses and steps on, the displacement amounts generated by the inclined surface main piston 302 and the slave piston 306 are also larger. Therefore, the compression degrees of the two compression springs are also larger, and thus a continuously increasing feedback force will be given to the driver, so that the driver can better control the braking degree according to the felt feedback force.

[0058] Further, please refer to Figure 5, the travel data acquisition module 5 includes an operation time monitoring sub-module 501 and a pedal travel monitoring sub-module 502. The operation time monitoring sub-module 501 is connected to the pedal travel sensor 4 and is also connected to the analysis and calculation module 6; the pedal travel monitoring sub-module 502 is connected to the pedal travel sensor 4 and is also connected to the analysis and calculation module 6;

[0059] The operation time monitoring sub-module 501 is used to obtain and record the duration of the operator's braking.

[0060] The pedal travel monitoring sub-module 502 is used to obtain and record the pedal travel distance of the operator's pedal braking.

[0061] In this embodiment, the operation time monitoring sub-module 501 and the pedal travel monitoring sub-module 502 are mainly used to record and collect data detected by the pedal travel sensor 4. The operation time monitoring sub-module 501 is used to collect the pedal braking time when the operator steps on the pedal body, and the pedal travel monitoring sub-module 502 records and collects the pedal displacement converted from the rotation angle of the pedal body 2 detected by the pedal travel sensor 4.

[0062] Further, please refer to Figure 6 , the analysis and calculation module 6 includes a pedal travel grading sub-module 601 and a pedal travel speed calculation sub-module 602. The pedal travel grading sub-module 601 is connected to the travel data acquisition module 5; the pedal travel speed calculation sub-module 602 is connected to the travel data acquisition module 5;

[0063] The pedal travel grading sub-module 601 judges and classifies the pedal travel information obtained by the travel data acquisition module 5 based on the set pedal travel groups and generates a specified braking level instruction;

[0064] The pedal travel speed calculation sub-module 602 calculates the pedal travel speed of the operator based on the operation displacement and the braking operation time obtained by the travel data acquisition module 5.

[0065] In this embodiment, the pedal travel grading sub-module 601 first classifies the pedal travel levels according to the actual operation situation. For example, based on different pedal travel ranges, it can be divided into speed control braking, slow speed braking, medium speed braking, and fast speed braking. The corresponding pedal travel from the speed control braking level to the fast speed braking level becomes larger and larger. The pedal travel speed calculation sub-module 602 calculates the pedal travel speed of the driver by combining the detected pedal travel with the braking time. The faster the pedal travel speed, the stronger the braking intention of the driver.

[0066] Further, please refer toFigure 7 The execution braking module 7 includes an instruction integration sub-module 701 and a braking control sub-module 702. The instruction integration sub-module 701 is connected to the analysis and calculation module 6; the braking control sub-module 702 is connected to the instruction integration sub-module 701;

[0067] The instruction integration sub-module 701 generates the braking instruction based on the braking level instruction generated by the stepping distance classification sub-module 601 in combination with the stepping speed calculated by the stepping speed calculation sub-module 602;

[0068] The braking control sub-module 702 completes the braking operation of the vehicle based on the braking instruction generated by the instruction integration sub-module 701.

[0069] Further, please refer to Figure 8 The instruction integration sub-module 701 includes a stepping speed judgment unit 7011 and an instruction determination unit 7012. The stepping speed judgment unit 7011 is connected to the analysis and calculation module 6; the instruction determination unit 7012 is connected to the stepping speed judgment unit 7011;

[0070] The stepping speed judgment unit 7011 analyzes and judges the stepping speed calculated by the stepping speed calculation sub-module 602 based on a set stepping speed range;

[0071] The instruction determination unit 7012 generates the braking instruction based on the analysis and judgment result of the stepping speed judgment unit 7011 in combination with the braking level instruction.

[0072] In this embodiment, the stepping speed judgment unit 7011 in the instruction integration sub-module 701 is mainly used to analyze the stepping speed calculated by the stepping speed calculation sub-module 602. The stepping speed judgment unit 7011 is preset with a stepping speed range according to the actual operation situation. When the stepping speed exceeds the set range, it proves that the driver's braking operation belongs to an emergency brake. At this time, the instruction determination unit 7012 will output an emergency braking instruction, and then control the corresponding braking element to take emergency braking measures through the braking control sub-module 702;

[0073] When the stepping speed determination unit 7011 determines that the stepping speed is within the set stepping speed range, it proves that the driver is performing a normal braking operation. Then, the instruction determination unit 7012 can generate corresponding braking instructions according to the stepping distance levels divided by the stepping distance classification sub-module 601. Finally, the braking control sub-module 702 performs corresponding braking operations according to different braking instructions. Since different braking instructions are classified and judged according to the stepping distance, when the driver performs a normal braking step, the greater the stepping distance, the more obvious the braking effect. At the same time, due to the setting of the pedal feel simulator 3, the feedback force sensed by the driver is also greater, thus conforming to the braking operation experience brought by traditional braking to meet the long-term driving operation habits and driving pleasure of the driver.

[0074] Please refer to Figure 9 , a master cylinder simulation brake pedal control method, using the master cylinder simulation brake pedal system, includes the following steps:

[0075] S1: When the user performs a braking operation through the pedal body 2, the pedal body 2 gives the user a corresponding braking feedback force through the pedal feel simulator 3 arranged on the mounting bracket 1;

[0076] Specifically, the cylinder block 301 is fixedly arranged on the mounting bracket 1 through bolts. A sliding cylindrical platform for installing the inclined main piston 302 is arranged at the top of the cylinder block 301. The lower end cover 308 is arranged below the cylinder block 301 through thread fitting;

[0077] The outside of the inclined main piston 302 slidably arranged inside the cylinder block 301 is connected with the U-shaped fork 303. The U-shaped fork 303 is matched with the movable ball groove arranged on the inclined main piston 302 through a spherical head. The U-shaped fork 303 is rotatably connected with the pedal body 2. When the user steps on the pedal body 2, the pedal body 2 will squeeze the U-shaped fork 303, and then the U-shaped fork 303 will drive the inclined main piston 302 to slide above the cylinder block 301 under the drive of the pedal body 2;

[0078] A slave piston 306 is also arranged inside the cylinder block 301. An arc surface for cooperating with the inner inclined surface of the inclined main piston 302 is arranged on the side of the plug cover arranged at the top of the slave piston 306. When the inclined main piston 302 slides, the slave piston 306 will move downward under the action of the inclined main piston 302;

[0079] The catheter 305 is arranged at the position where the cylinder block 301 is connected to the lower end cover 308. An upper compression spring 307 is arranged between the upper surface of the catheter 305 and the lower step surface under the plug cover at the top of the slave piston 306. A lower compression spring 309 is arranged between the bottom of the slave piston 306 and the inner side of the lower end cover 308. At the same time, a damping pin 310 is also arranged inside the lower end cover 308. By means of the upper compression spring 307, the lower compression spring 309 and the damping pin 310, a corresponding reaction force can be given to the slave piston 306 when the slave piston 306 moves downward, thereby giving an operator a force value feedback, so that a driver can obtain a corresponding feedback force when stepping on the pedal body 2. Moreover, as the driver continuously presses down and steps on, the displacement amounts generated by the inclined surface master piston 302 and the slave piston 306 are also larger. Therefore, the compression degrees of the two compression springs are also larger, and thus a continuously increasing feedback force will be given to the driver, so that the driver can better control the braking degree according to the felt feedback force.

[0080] S2: During the process that the user steps on the pedal body 2, the pedal travel sensor 4 monitors the operating displacement amount of the pedal body 2 and the braking operation time.

[0081] Specifically, the pedal travel sensor 4 is an angle sensor. By fixing a magnet on the rocker arm and then using an MLEX 90371 Hall chip (the verification of the domestic Saizhuo 4688 chip has been completed) to detect the rotation position of the rocker arm, so as to detect the operating displacement amount of the pedal by detecting the rotation angle of the pedal body 2. At the same time, when the user steps on the pedal body 2, the electrical signals detected by the pedal travel sensor 4 can be used to detect and collect data such as the braking time.

[0082] S3: The operating displacement amount of the pedal body 2 and the braking operation time obtained by the travel data acquisition module 5 are analyzed and calculated by the analysis and calculation module 6.

[0083] Specifically, the travel data acquisition module 5 includes an operation time monitoring sub-module 501 and a stepping distance monitoring sub-module 502. The stepping distance classification sub-module 601 classifies the stepping distance levels according to the actual operation conditions. For example, based on different stepping distance ranges, it can be divided into speed control braking, slow speed braking, medium speed braking, and rapid braking. The corresponding stepping distances from the speed control braking level to the rapid braking level are getting larger and larger. The stepping speed calculation sub-module 602 calculates the driver's stepping speed by combining the detected stepping distance with the braking time. The faster the stepping speed, the stronger the driver's braking intention.

[0084] S4: The execution braking module 7 performs corresponding braking operations according to the analysis and calculation results of the analysis and calculation module 6 .

[0085] Specifically, the execution braking module 7 includes an instruction integration submodule 701 and a braking control submodule 702. The instruction integration submodule 701 includes a pedaling speed judgment unit 7011 and an instruction determination unit 7012. The pedaling speed judgment unit 7011 in the instruction integration submodule 701 is mainly used to analyze the pedaling speed calculated by the pedaling speed calculation submodule 602. The pedaling speed judgment unit 7011 pre-sets a pedaling speed range according to actual operating conditions. When the pedaling speed exceeds the set range, it proves that the driver's braking operation is an emergency brake. At this time, the instruction determination unit 7012 will output an emergency braking instruction, and then control the corresponding braking element through the braking control submodule 702 to take emergency braking measures.

[0086] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A master cylinder simulation brake pedal system, comprising a mounting bracket and a pedal body, wherein the pedal body is rotatably mounted on the mounting bracket, and is characterized in that, It further includes a pedal feel simulator, a pedal travel sensor, a travel data acquisition module, an analysis and calculation module, and an execution braking module. The pedal feel simulator is arranged on the mounting bracket. The pedal travel sensor is installed on one side of the mounting bracket close to the pedal. The travel data acquisition module is connected to the pedal travel sensor. The analysis and calculation module is connected to the travel data acquisition module. The execution braking module is connected to the analysis and calculation module; The pedal feel simulator is used to provide pedal force value feedback when the driver steps on the brake; The pedal travel sensor is used to monitor the operating displacement of the pedal and the braking operation time; The travel data acquisition module is used to acquire the data information monitored by the pedal travel sensor; The analysis and calculation module is used to analyze and calculate the data information acquired by the travel data acquisition module; The execution braking module generates a specified braking instruction based on the analysis and calculation result of the analysis and calculation module, and completes the corresponding braking operation based on the generated braking instruction.

2. The master cylinder simulation braking pedal system according to claim 1, characterized in that The pedal feel simulator includes a cylinder block, an inclined main piston, a U-shaped fork, a dust cover, and a damping component. The cylinder block is fixedly installed on one side of the mounting bracket. The inclined main piston is slidably installed in the cylinder block. The U-shaped fork is connected to the inclined main piston and is rotatably connected to the pedal body. The dust cover is installed on one side of the cylinder block close to the U-shaped fork. The damping component is connected to the cylinder block and is used to provide pedal force value feedback.

3. The master cylinder simulation braking pedal system and control method according to claim 1, characterized in that The travel data acquisition module includes an operation time monitoring sub-module and a stepping distance monitoring sub-module. The operation time monitoring sub-module is connected to the pedal travel sensor and is connected to the analysis and calculation module. The stepping distance monitoring sub-module is connected to the pedal travel sensor and is connected to the analysis and calculation module; The operation time monitoring sub-module is used to acquire and record the duration of the operator's braking; The stepping distance monitoring sub-module is used to acquire and record the stepping distance of the operator's stepping on the brake.

4. The master cylinder simulation braking pedal system and control method according to claim 1, characterized in that The analysis and calculation module includes a stepping distance grading sub-module and a stepping speed calculation sub-module. The stepping distance grading sub-module is connected to the travel data acquisition module. The stepping speed calculation sub-module is connected to the travel data acquisition module; The stepping distance grading sub-module judges and classifies the stepping distance information acquired by the travel data acquisition module based on the set stepping distance grouping and generates a specified braking level instruction; The stepping speed calculation sub-module calculates the stepping speed of the operator based on the operating displacement and the braking operation time acquired by the travel data acquisition module.

5. The master cylinder simulation braking pedal system and control method according to claim 1, characterized in that The execution braking module includes an instruction integration sub-module and a braking control sub-module. The instruction integration sub-module is connected to the analysis and calculation module; the braking control sub-module is connected to the instruction integration sub-module; The instruction integration sub-module generates the braking instruction based on the stepping speed calculated by the stepping speed calculation sub-module and the braking level instruction generated by the stepping distance grading sub-module; The braking control sub-module completes the braking operation of the vehicle based on the braking instruction generated by the instruction integration sub-module.

6. The master cylinder analog braking pedal system and control method according to claim 2, wherein, The damping component includes a conduit, a slave piston, an upper compression spring, a lower end cover, a lower compression spring and a damping pin. The conduit is installed in the cylinder block; the slave piston is slidably installed in the conduit; both sides of the upper compression spring are connected to the slave piston and the conduit respectively; the lower end cover is installed under the cylinder block; both sides of the lower compression spring are connected to the slave piston and the lower end cover; the damping pin is installed on one side of the lower end cover close to the slave piston.

7. The master cylinder analog braking pedal system and control method according to claim 5, wherein, The instruction integration sub-module includes a stepping speed judgment unit and an instruction determination unit. The stepping speed judgment unit is connected to the analysis and calculation module; the instruction determination unit is connected to the stepping speed judgment unit; The stepping speed judgment unit analyzes and judges the stepping speed calculated by the stepping speed calculation sub-module based on a set stepping speed range; The instruction determination unit generates the braking instruction based on the analysis and judgment result of the stepping speed judgment unit and the braking level instruction.

8. A master cylinder analog brake pedal control method, which uses the master cylinder analog brake pedal system as described in claim 1, is characterized in that, Including the following steps, When the user performs a braking operation through the pedal body, the pedal body gives the user a corresponding braking feedback force through the pedal feel simulator provided on the mounting bracket; During the process of the user stepping on the pedal body, the pedal stroke sensor monitors the operation displacement of the pedal body and the braking operation time; The operation displacement of the pedal body and the braking operation time obtained by the stroke data acquisition module are analyzed and calculated by the analysis and calculation module; The execution braking module performs corresponding braking operations according to the analysis and calculation results of the analysis and calculation module.

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