CN114834407A - Vehicle brake pedal simulation device and pedal feel adjusting method - Google Patents
Vehicle brake pedal simulation device and pedal feel adjusting method Download PDFInfo
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- CN114834407A CN114834407A CN202210311166.XA CN202210311166A CN114834407A CN 114834407 A CN114834407 A CN 114834407A CN 202210311166 A CN202210311166 A CN 202210311166A CN 114834407 A CN114834407 A CN 114834407A
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- 238000004088 simulation Methods 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 16
- 230000001276 controlling effect Effects 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
- B60T8/409—Systems with stroke simulating devices for driver input characterised by details of the stroke simulating device
Abstract
The invention discloses a vehicle brake pedal simulator, which comprises a brake master cylinder, wherein the brake master cylinder is connected with a pedal simulator through an adjusting pipeline, the pedal simulator is provided with a plurality of cavities, electromagnetic valves and one-way valves, the number of the electromagnetic valves and the number of the one-way valves correspond to that of the cavities of the pedal simulator, and the brake pressures are established in different cavities of the pedal simulator by controlling the switches of different electromagnetic valves in the adjusting pipeline, so that different combined springs in the pedal simulator provide pedal force, and the real-time adjustment of pedal feeling is realized.
Description
Technical Field
The invention relates to the field of pedal feel adjusting devices, in particular to a vehicle brake pedal simulation device and a pedal feel adjusting method.
Background
With the development of vehicle electromotion and integration, the application of a brake-by-wire system adopting a decoupling type electronic booster or an integrated brake controller in a vehicle is remarkably increased. The brake hydraulic pressure built in the master cylinder by the driver stepping on the brake pedal and the brake hydraulic pressure built in the brake loop by the motor booster are mutually decoupled, the pedal stroke of the driver is detected by the pedal stroke sensor, the deceleration of the vehicle controlled by the brake-by-wire actuator meets a preset pedal stroke and deceleration relation curve, and the relation curve of the pedal force and the pedal stroke is determined by the pedal simulator. The pedal simulator needs to accurately and stably simulate the change of the pedal force along with the pedal stroke, so as to provide good brake pedal feeling for the driver.
The existing pedal feeling simulator generally uses hydraulic pressure established by a driver stepping on a brake pedal to push a piston in the pedal simulator to move to compress a multi-stage spring or a disc spring, and can simulate a relation curve of pedal force-pedal stroke of the driver in a segmented mode. The multi-stage spring or disc spring is designed and selected according to the set relationship curve of pedal force and pedal stroke, so that after the hardware selection is finished, the feeling of the pedal force and pedal stroke of a driver is fixed and cannot be adaptively adjusted according to the expectation of the driver.
Disclosure of Invention
The invention aims to provide a vehicle brake pedal simulation device and a pedal feel adjusting method, and aims to solve the problem that pedal feel cannot be adjusted in real time according to requirements of a driver in the prior art.
In order to solve the technical problem, the invention provides a technical scheme that: a vehicle brake pedal simulation device comprises a brake pedal, a brake master cylinder and a liquid storage tank; a first piston and a second piston of the brake master cylinder are arranged in the brake master cylinder, wherein the first piston of the brake master cylinder is connected with the brake pedal through a transmission mechanism, the first piston and the second piston of the brake master cylinder are connected through a spring, and the second piston of the brake master cylinder is connected with the cylinder wall of the brake master cylinder through a spring; a first cavity of the brake master cylinder is formed between the first piston and the second piston of the brake master cylinder, and a second cavity of the brake master cylinder is formed between the second piston of the brake master cylinder and the cylinder wall; the liquid storage tank is connected with the first cavity and the second cavity of the brake master cylinder through pipelines;
the second cavity of the brake master cylinder is connected with a first electromagnetic valve through a pipeline, and the first electromagnetic valve is connected with a second loop through a pipeline; the first cavity of the brake master cylinder is connected with a second electromagnetic valve through a pipeline, and the second electromagnetic valve is connected with the first loop through a pipeline;
the first cavity of the brake master cylinder is connected with a pedal simulator switch electromagnetic valve through a pipeline, the pedal simulator switch electromagnetic valve is connected with a pedal simulator through a pipeline, and two ends of the pedal simulator switch electromagnetic valve are connected with a first one-way valve in parallel through a pipeline; the liquid storage tank is connected with the cavity of the pedal simulator through an adjusting pipeline;
the pedal simulator comprises at least two feedback units which are communicated end to end, and the adjusting pipeline comprises adjusting branches corresponding to the number of the feedback units; each feedback unit comprises a cylinder body, a spring and a piston which are arranged in the cylinder body and connected with each other, and a cavity of each feedback unit is formed between the piston and the cylinder body; the regulating branch comprises an electromagnetic valve and a one-way valve which are connected in parallel through a pipeline.
According to the scheme, the number of the feedback units and the number of the adjusting branches are three.
According to the scheme, the feedback units are communicated end to end in a series connection mode; or the feedback units are arranged in parallel and are communicated end to end through pipelines.
According to the scheme, the pedal simulator comprises a pedal simulator cylinder body, one end in the pedal simulator cylinder body is connected with a third piston of the pedal simulator through a third combined spring, the other end of the third piston of the pedal simulator is provided with a second piston limiting plate, the second piston limiting plate is connected with a second piston of the pedal simulator through a second combined spring, the other end of the second piston of the pedal simulator is provided with a first piston limiting plate, and the first piston limiting plate is connected with a first piston of the pedal simulator through a first combined spring; the first piston limiting plate and the second piston limiting plate are both provided with through holes, a first pedal simulator cavity is formed between a pedal simulator cylinder body and a first pedal simulator piston, a second pedal simulator cavity is formed between the first pedal simulator piston and a second pedal simulator piston, a third pedal simulator cavity is formed between the second pedal simulator piston and a third pedal simulator piston, and a fourth pedal simulator cavity is formed between the third pedal simulator piston and the pedal simulator cylinder body;
the adjusting pipeline comprises a first adjusting branch, a second adjusting branch and a third adjusting branch; the first adjusting branch comprises a third electromagnetic valve and a second one-way valve which are connected in parallel through a pipeline, and one end of the first adjusting branch is connected with the second cavity of the pedal simulator through the pipeline; the second adjusting branch comprises a fourth electromagnetic valve and a third one-way valve which are connected in parallel through a pipeline, and one end of the second adjusting branch is connected with a third cavity of the pedal simulator through the pipeline; the third adjusting branch comprises a fifth electromagnetic valve and a fourth one-way valve which are connected in parallel through a pipeline, and one end of the third adjusting branch is connected with a fourth cavity of the pedal simulator through the pipeline.
According to the scheme, the first cavity of the brake master cylinder is connected with a pressure sensor through a pipeline.
A pedal feel adjustment method implemented by the vehicle brake pedal simulation apparatus described above includes the steps of,
s1, selecting a driving mode by the driver according to the driving habit of the driver, wherein the driving mode comprises a comfortable mode, a standard mode and a motion mode;
and S2, controlling the electromagnetic valve in the regulating pipeline according to the driving mode selected by the driver.
According to the above scheme, the control step of S2 is specifically,
executing S201 when the driving mode is a comfortable mode, executing S202 when the driving mode is a standard mode, and executing S203 when the driving mode is a sport mode;
s201, controlling a third electromagnetic valve to be opened, and controlling a fourth electromagnetic valve and a fifth electromagnetic valve to be closed;
s202, controlling the fourth electromagnetic valve to be opened, and controlling the third electromagnetic valve and the fifth electromagnetic valve to be closed;
and S203, controlling the fifth electromagnetic valve to be opened, and controlling the third electromagnetic valve and the fourth electromagnetic valve to be closed.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the pedal feel adjusting method as described above when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the pedal feel adjustment method as described above.
An automobile having a vehicle brake pedal simulation arrangement as hereinbefore described.
The invention has the beneficial effects that: the brake hydraulic pressure is established in different feedback units by controlling the on-off of each electromagnetic valve in each adjusting branch, so that the spring combinations in different feedback units provide resilience forces with different strengths, and a driver can adjust the pedal feel in real time according to actual requirements;
furthermore, the number of the feedback units is adjusted, so that the number of the modes is adjusted, and the richer pedal feeling requirements of the driver are met.
Furthermore, the feedback unit is arranged in a series connection mode, so that the structure of the pedal simulator is more compact; the feedback units are arranged in a parallel mode, so that the axial occupied space of the pedal simulator can be saved, and the feedback units are more flexibly arranged in the car machine due to the fact that the feedback units are connected through pipelines.
Drawings
FIG. 1 is a block diagram of a vehicle brake pedal simulator in accordance with an embodiment of the present invention;
FIG. 2 is a flowchart of a pedal feel adjustment method according to an embodiment of the present invention;
FIG. 3 is a graph of pedal travel versus pedal force for various modes of operation in accordance with an embodiment of the present invention.
In the figure: 1-brake pedal, 2-brake master cylinder, 3-liquid storage tank, 4-first solenoid valve, 5-second solenoid valve, 6-pressure sensor, 7-pedal simulator switch solenoid valve, 8-first check valve, 9-pedal simulator, 901-pedal simulator first piston, 902-first combination spring, 903-first piston limiting plate, 904-pedal simulator second piston, 905-second combination spring, 906-second piston limiting plate, 907-pedal simulator third piston, 908-third combination spring, 10-third solenoid valve, 11-second check valve, 12-fourth solenoid valve, 13-third check valve, 14-fifth solenoid valve and 15-fourth check valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Referring to fig. 1, a vehicle brake pedal simulation apparatus includes a brake pedal 1, a brake master cylinder 2, and a fluid reservoir 3; a first piston and a second piston of the brake master cylinder are arranged in the brake master cylinder 2, wherein the first piston of the brake master cylinder is connected with the brake pedal 1 through a transmission mechanism, the first piston and the second piston of the brake master cylinder are connected through a spring, and the second piston of the brake master cylinder is connected with the cylinder wall of the brake master cylinder 2 through a spring; a first cavity of the brake master cylinder is formed between the first piston and the second piston of the brake master cylinder, and a second cavity of the brake master cylinder is formed between the second piston of the brake master cylinder and the cylinder wall; the liquid storage tank 3 is connected with the first cavity and the second cavity of the brake master cylinder through pipelines;
the second cavity of the brake master cylinder is connected with a first electromagnetic valve 4 through a pipeline, and the first electromagnetic valve 4 is connected with a second loop through a pipeline; the first cavity of the brake master cylinder is connected with a second electromagnetic valve 5 through a pipeline, and the second electromagnetic valve 5 is connected with the first loop through a pipeline; the first loop and the second loop are communicated with a vehicle braking system;
the first cavity of the brake master cylinder is connected with a pedal simulator switch electromagnetic valve 7 through a pipeline, the pedal simulator switch electromagnetic valve 7 is connected with a pedal simulator 9 through a pipeline, and two ends of the pedal simulator switch electromagnetic valve 7 are connected with a first one-way valve 8 in parallel through a pipeline; the liquid storage tank 3 is connected with the cavity of the pedal simulator 9 through an adjusting pipeline;
the pedal simulator 9 comprises a pedal simulator cylinder, one end in the pedal simulator cylinder is connected with a pedal simulator third piston 907 through a third combined spring 908, the other end of the pedal simulator third piston 907 is provided with a second piston limiting plate 906, the second piston limiting plate 906 is connected with the pedal simulator second piston 906 through a second combined spring 905, the other end of the pedal simulator second piston 904 is provided with a first piston limiting plate 903, and the first piston limiting plate 903 is connected with the pedal simulator first piston 901 through a first combined spring 902; the first piston limiting plate and the second piston limiting plate are both provided with through holes, a first pedal simulator cavity is formed between a pedal simulator cylinder and a first pedal simulator piston 901, a second pedal simulator cavity is formed between the first pedal simulator piston 901 and a second pedal simulator piston 904, a third pedal simulator cavity is formed between the second pedal simulator piston 904 and a third pedal simulator piston 907, and a fourth pedal simulator cavity is formed between the third pedal simulator piston 907 and the pedal simulator cylinder;
the adjusting pipeline comprises a first adjusting branch, a second adjusting branch and a third adjusting branch; the first adjusting branch comprises a third electromagnetic valve 10 and a second one-way valve 11 which are connected in parallel through a pipeline, and one end of the first adjusting branch is connected with the second cavity of the pedal simulator through the pipeline; the second adjusting branch comprises a fourth electromagnetic valve 12 and a third one-way valve 13 which are connected in parallel through a pipeline, and one end of the second adjusting branch is connected with a third cavity of the pedal simulator through the pipeline; the third adjusting branch comprises a fifth electromagnetic valve 14 and a fourth one-way valve 15 which are connected in parallel through a pipeline, and one end of the third adjusting branch is connected with a fourth cavity of the pedal simulator through the pipeline.
Further, the first cavity of the brake master cylinder is connected with a pressure sensor 6 through a pipeline.
Referring to fig. 2, a pedal feel adjusting method implemented using the vehicle brake pedal simulation apparatus as described above, includes the steps of,
s1, selecting a driving mode by the driver according to the driving habit of the driver, wherein the driving mode comprises a comfortable mode, a standard mode and a motion mode;
and S2, controlling the electromagnetic valve in the regulating pipeline according to the driving mode selected by the driver.
Further, the control step of S2 is specifically,
executing S201 when the driving mode is a comfortable mode, executing S202 when the driving mode is a standard mode, and executing S203 when the driving mode is a sport mode;
s201, controlling the third electromagnetic valve 10 to be opened, and closing the fourth electromagnetic valve and the fifth electromagnetic valve; at the moment, the second cavity of the pedal simulator is communicated with the liquid storage tank 3, and the brake hydraulic pressure is not established in the second cavity of the pedal simulator; a driver steps on a brake pedal, brake hydraulic pressure is built in a brake master cylinder and a first cavity of a pedal simulator, a first piston 901 of the pedal simulator is pushed to move to compress a spring, and pedal feeling feedback is provided for the driver only through a first combined spring 902; the rigidity of the combined spring is designed according to pedal force-pedal stroke of comfortable pedal feel, the rigidity of each spring of the combined spring is minimum in a comfortable mode, and the pedal force corresponding to the same pedal stroke is minimum;
s202, controlling the fourth electromagnetic valve 12 to be opened, and closing the third electromagnetic valve and the fifth electromagnetic valve; at the moment, the third cavity of the pedal simulator is communicated with the liquid storage tank 3, the brake pressure is not established in the third cavity of the pedal simulator, the second cavity of the pedal simulator is disconnected from the liquid storage tank 3, and the brake pressure is established in the second cavity of the pedal simulator; the driver steps on the brake pedal, braking hydraulic pressure is built in a first cavity of the pedal simulator, a first piston 901 of the pedal simulator is pushed to move, due to incompressibility of liquid, displacement amounts of the first piston and a second piston of the pedal simulator are the same, a second piston 904 of the pedal simulator moves to compress a second combined spring 905, and pedal feeling feedback is provided for the driver through deformation of the first combined spring and the second combined spring; in the standard mode, the total stiffness curves of the first combined spring and the second combined spring are designed according to the pedal force-pedal stroke with standard pedal feeling, the stiffness of the second combined spring 905 compensates the stiffness of the first combined spring 902, and the combined action meets the total stiffness curve.
S203, controlling the fifth electromagnetic valve 14 to be opened, and closing the third electromagnetic valve and the fourth electromagnetic valve; at the moment, the fourth cavity of the pedal simulator is communicated with the liquid storage tank 3, the brake pressure is not established in the fourth cavity of the pedal simulator, the second cavity and the third cavity of the pedal simulator are disconnected from the liquid storage tank 3, and therefore brake hydraulic pressure is established in the second cavity and the third cavity of the pedal simulator; the driver steps on the brake pedal to push the first piston, the second piston and the third piston of the pedal simulator to move forwards, the displacement amounts of the first piston, the second piston and the third piston of the pedal simulator are the same, the third piston 907 of the pedal simulator compresses the third combined spring 908, and the first combined spring, the second combined spring and the third combined spring of the pedal simulator deform to provide pedal feeling feedback for the driver together; in the sport mode, the total stiffness curves of the first, second and third combination springs are designed according to the pedal force-pedal travel of the sport pedal feel, and the stiffness of the third combination spring 908 compensates the stiffness of the first and second combination springs, so that the combined action stiffness meets the total stiffness curve.
The corresponding relationship between the pedal stroke and the pedal force in each mode is shown in fig. 3.
Furthermore, the diameters of the first piston, the second piston and the third piston of the pedal simulator are the same; in other embodiments, the diameters of the combined springs may be different, in which case, the combined springs are designed so that when the pedal stroke is within a certain pedal stroke-pedal force interval, the stiffness of the first, second and third combined springs is within the interval.
Further, in other embodiments of the present invention, the number of pedal feeling modes can be increased by increasing the number of cavities in the pedal simulator 9 and the number of adjusting branches of the adjusting pipeline.
Further, in the pedal simulator 9 of the present embodiment, the cavities are arranged in series, and in other embodiments of the present invention, the cylinders of the pedal simulator 9 are arranged in parallel, and different cavities are connected by a pipeline, so as to reduce the axial length of the pedal simulator 9, and facilitate spatial arrangement.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the pedal feel adjusting method as described above when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the pedal feel adjustment method as described above.
An automobile having a vehicle brake pedal simulation arrangement as hereinbefore described.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vehicle brake pedal simulation apparatus characterized in that: comprises a brake pedal, a brake master cylinder and a liquid storage tank; a first piston and a second piston of the brake master cylinder are arranged in the brake master cylinder, wherein the first piston of the brake master cylinder is connected with the brake pedal through a transmission mechanism, the first piston and the second piston of the brake master cylinder are connected through a spring, and the second piston of the brake master cylinder is connected with the cylinder wall of the brake master cylinder through a spring; a first cavity of the brake master cylinder is formed between the first piston and the second piston of the brake master cylinder, and a second cavity of the brake master cylinder is formed between the second piston of the brake master cylinder and the cylinder wall; the liquid storage tank is connected with the first cavity and the second cavity of the brake master cylinder through pipelines;
the second cavity of the brake master cylinder is connected with a first electromagnetic valve through a pipeline, and the first electromagnetic valve is connected with a second loop through a pipeline; the first cavity of the brake master cylinder is connected with a second electromagnetic valve through a pipeline, and the second electromagnetic valve is connected with the first loop through a pipeline;
the first cavity of the brake master cylinder is connected with a pedal simulator switch electromagnetic valve through a pipeline, the pedal simulator switch electromagnetic valve is connected with a pedal simulator through a pipeline, and two ends of the pedal simulator switch electromagnetic valve are connected with a first one-way valve in parallel through a pipeline; the liquid storage tank is connected with the cavity of the pedal simulator through an adjusting pipeline;
the pedal simulator comprises at least two feedback units which are communicated end to end, and the adjusting pipeline comprises adjusting branches corresponding to the number of the feedback units; each feedback unit comprises a cylinder body, a spring and a piston which are arranged in the cylinder body and connected with each other, and a cavity of each feedback unit is formed between the piston and the cylinder body; the regulating branch comprises an electromagnetic valve and a one-way valve which are connected in parallel through a pipeline.
2. The vehicle brake pedal simulation apparatus according to claim 1, characterized in that: the number of the feedback units and the adjusting branches is three.
3. The vehicle brake pedal simulation apparatus according to claim 2, characterized in that: the feedback units are communicated end to end in a series connection mode; or the feedback units are arranged in parallel and are communicated end to end through pipelines.
4. The vehicle brake pedal simulation apparatus according to claim 3, characterized in that: the pedal simulator comprises a pedal simulator cylinder body, one end in the pedal simulator cylinder body is connected with a third piston of the pedal simulator through a third combined spring, the other end of the third piston of the pedal simulator is provided with a second piston limiting plate, the second piston limiting plate is connected with a second piston of the pedal simulator through a second combined spring, the other end of the second piston of the pedal simulator is provided with a first piston limiting plate, and the first piston limiting plate is connected with a first piston of the pedal simulator through a first combined spring; the first piston limiting plate and the second piston limiting plate are both provided with through holes, a first pedal simulator cavity is formed between a pedal simulator cylinder body and a first pedal simulator piston, a second pedal simulator cavity is formed between the first pedal simulator piston and a second pedal simulator piston, a third pedal simulator cavity is formed between the second pedal simulator piston and a third pedal simulator piston, and a fourth pedal simulator cavity is formed between the third pedal simulator piston and the pedal simulator cylinder body;
the adjusting pipeline comprises a first adjusting branch, a second adjusting branch and a third adjusting branch; the first adjusting branch comprises a third electromagnetic valve and a second one-way valve which are connected in parallel through a pipeline, and one end of the first adjusting branch is connected with the second cavity of the pedal simulator through the pipeline; the second adjusting branch comprises a fourth electromagnetic valve and a third one-way valve which are connected in parallel through a pipeline, and one end of the second adjusting branch is connected with a third cavity of the pedal simulator through the pipeline; the third adjusting branch comprises a fifth electromagnetic valve and a fourth one-way valve which are connected in parallel through a pipeline, and one end of the third adjusting branch is connected with a fourth cavity of the pedal simulator through the pipeline.
5. The vehicle brake pedal simulation apparatus according to claim 1, characterized in that: the first cavity of the brake master cylinder is connected with a pressure sensor through a pipeline.
6. A pedal feel adjustment method implemented by the vehicle brake pedal simulation apparatus according to any one of claims 1 to 5, characterized in that: comprises the following steps of (a) carrying out,
s1, selecting a driving mode by the driver according to the driving habit of the driver, wherein the driving mode comprises a comfortable mode, a standard mode and a motion mode;
and S2, controlling the electromagnetic valve in the regulating pipeline according to the driving mode selected by the driver.
7. The pedaling feel adjusting method according to claim 6, wherein: the control step of S2 is specifically that,
executing S201 when the driving mode is a comfortable mode, executing S202 when the driving mode is a standard mode, and executing S203 when the driving mode is a sport mode;
s201, controlling a third electromagnetic valve to be opened, and controlling a fourth electromagnetic valve and a fifth electromagnetic valve to be closed;
s202, controlling the fourth electromagnetic valve to be opened, and controlling the third electromagnetic valve and the fifth electromagnetic valve to be closed;
and S203, controlling the fifth electromagnetic valve to be opened, and controlling the third electromagnetic valve and the fourth electromagnetic valve to be closed.
8. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein: the processor, when executing the computer program, carries out the steps of the pedal feel adjustment method according to any one of claims 3 to 4.
9. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program realizing the steps of the pedal feel adjusting method as claimed in any one of claims 3-4 when being executed by a processor.
10. An automobile, characterized in that: having a vehicle brake pedal simulation device according to any one of claims 1-2.
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| CN202210311166.XA CN114834407B (en) | 2022-03-28 | 2022-03-28 | Vehicle brake pedal simulation device and pedal feel adjustment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115339425A (en) * | 2022-08-18 | 2022-11-15 | 浙江吉利控股集团有限公司 | Braking device, braking adjusting method and vehicle |
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| CN108032851A (en) * | 2018-01-08 | 2018-05-15 | 吉林大学 | A kind of brake pedal travel simulator and its control method |
| CN111256970A (en) * | 2020-02-18 | 2020-06-09 | 万向钱潮股份有限公司 | Simulation device capable of adjusting automobile brake pedal feeling |
| WO2021248396A1 (en) * | 2020-06-11 | 2021-12-16 | 华为技术有限公司 | Pedal sensation simulation system, hydraulic regulation unit, and control method |
| CN112208501A (en) * | 2020-10-10 | 2021-01-12 | 清华大学 | Brake pedal feel simulation device and method based on controllable variable-stiffness hydraulic cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115339425A (en) * | 2022-08-18 | 2022-11-15 | 浙江吉利控股集团有限公司 | Braking device, braking adjusting method and vehicle |
| CN115339425B (en) * | 2022-08-18 | 2024-03-01 | 浙江吉利控股集团有限公司 | Brake device, brake adjustment method, and vehicle |
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