Brake pedal assembly system, control method, electromechanical brake system, and vehicle

Abstract

The application provides a brake pedal assembly system, a control method and an electromechanical brake system, and relates to the field of automobile safety. A detection device is used to collect target signals; a transmission device is connected with a driving device and a pedal rotating shaft. The driving device generates different torques according to control signals, and the torques generate pedal force feelings on the pedal surface through the transmission device and the pedal rotating shaft. The application generates control signals through signals collected by sensors. The control signals are used to control the driving device to generate different torques. The generated torques can generate different pedal force feelings on the pedal surface through the transmission device and the pedal rotating shaft, so that the pedal force can be accurately tracked, that is, the driver can obtain accurate pedal force feedback.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile safety technology, and particularly relates to a brake pedal assembly system, a brake pedal control method, an electronic mechanical brake system and a vehicle. BACKGROUND

[0002] The automobile brake system is extremely important for automobile safety and safety of passengers on the vehicle. At present, there are two major types of brake systems: one type is a hydraulic brake system; and the other type is an EMB (Electronic Mechanical Brake).

[0003] The hydraulic brake system has problems of complex structure, large space occupation and slow system response due to the need for mechanical and hydraulic elements such as a brake master cylinder and a brake hard tube, and is gradually replaced by the electronic mechanical brake system.

[0004] The electronic mechanical brake system cancels the mechanical and hydraulic elements such as the brake master cylinder and the brake hard tube in the traditional hydraulic brake system, and directly controls the brakes of four wheels through an electric signal to brake. However, when the driver steps on the brake pedal, the foot stepping on the pedal cannot accurately obtain good feedback force feeling from the brake system, which seriously reduces the braking comfort and driving experience of the driver, and makes the driver unable to judge the current braking force, resulting in that the vehicle cannot be accurately braked and dangerous situations such as sudden braking or braking failure occur. SUMMARY

[0005] In view of the above problems, the present application provides a brake pedal assembly system, a brake pedal control method, an electronic mechanical brake system and a vehicle.

[0006] The brake pedal assembly system provided by the present application comprises a detection device, a driving device, a transmission device and a pedal body.

[0007] The detection device is used for collecting a target signal.

[0008] The transmission device is connected with the driving device and the pedal body respectively.

[0009] The driving device is used for generating different torques according to a control signal, and the torques generate different pedal force feelings on the pedal body through the transmission device.

[0010] The control signal is generated according to the target signal.

[0011] Optionally, the target signal comprises a force signal and a rotation signal.

[0012] Optionally, the force signal comprises a pedal force signal of the foot stepping on the pedal.

[0013] The rotation signal comprises a pedal rotation angle signal and a pedal rotation speed signal.

[0014] Optionally, the detection device comprises a first detection device and a second detection device; the pedal body comprises a pedal face and a pedal rotation shaft;

[0015] The first detection device is fixed on the pedal face and is used to collect a force signal applied on the pedal face;

[0016] The second detection device is fixed on the pedal rotation shaft and is used to collect the rotation signal applied on the pedal rotation shaft.

[0017] Optionally, the pedal body comprises a pedal rotation shaft; the transmission device comprises a bevel gear set;

[0018] The bevel gear set comprises a first bevel gear and a second bevel gear, wherein the first bevel gear is fixed on the pedal rotation shaft, the second bevel gear is fixedly connected with the rotation shaft of the driving device, and the first bevel gear and the second bevel gear are engaged with each other.

[0019] Optionally, the pedal body comprises a pedal face; the driving device generates a first torque according to the control signal, and a value of the first torque is smaller than a value of the pedal force collected on the pedal face.

[0020] Optionally, the pedal body comprises a pedal and a pedal face; the driving device generates a first torque, a second torque or a third torque according to the control signal;

[0021] The first torque generates the pedal force sense on the pedal face through the transmission device to accurately track the pedal force at the pedal stepping position;

[0022] The second torque controls the pedal to return to the initial position of the pedal when the pedal is not stepped through the transmission device;

[0023] The third torque controls the pedal to be kept at the position corresponding to the lower limit value of the pedal stroke through the transmission device.

[0024] Optionally, the driving device is fixed on a pedal rear support, and the pedal rear support is fixedly connected with a pedal base;

[0025] Optionally, the pedal body comprises a pedal arm and a pedal rotation shaft; the pedal arm is rigidly connected with the pedal rotation shaft;

[0026] The pedal rotation shaft is movably connected with the pedal base;

[0027] The pedal base is fixedly connected with a pedal upper support;

[0028] The upper bracket of the pedal is fixedly connected with the vehicle body.

[0029] Optionally, the pedal body comprises a pedal arm; the brake pedal assembly system further comprises a brake light switch.

[0030] The brake light switch is fixed on the pedal arm and is opened or closed according to the real-time state of the pedal, so that the brake light is turned on or off.

[0031] Optionally, when the pedal is in the stepping state, the pedal arm is separated from the brake light switch, and the brake light switch is closed, so that the brake light is turned on.

[0032] When the pedal is in the non-stepping state, the pedal arm is attached to the brake light switch, and the brake light switch is opened, so that the brake light is turned off.

[0033] The embodiment of the application provides a brake pedal control method, which is applied to the brake pedal assembly system.

[0034] The pedal force signal, the pedal rotation angle signal and the pedal rotation speed signal collected from the sensor are received.

[0035] According to the pedal force signal, the pedal rotation angle signal and the pedal rotation speed signal, a control signal is generated according to the real-time state of the pedal and is sent to the driving device, and the driving device generates different torques according to the control signal, and the different pedal force feelings are generated on the pedal body through the transmission device.

[0036] The embodiment of the application further provides an electromechanical brake system, which comprises the brake pedal assembly system and a controller.

[0037] The controller determines the real-time state of the pedal according to the target signal.

[0038] The controller generates a control signal according to the target signal and the real-time state of the pedal, so that the driving device generates a torque, and different pedal force feelings are generated on the pedal body through the transmission device.

[0039] The embodiment of the application further provides a vehicle, which comprises the electromechanical brake system.

[0040] The brake pedal assembly system provided by the application comprises a detection device, a driving device and a transmission device. The detection device is used for collecting target signals; the transmission device is connected with the driving device and a pedal rotating shaft respectively; and the driving device is used for generating different torques according to control signals, and the torques generate different pedal force feelings on the pedal surface through the transmission device and the pedal rotating shaft.

[0041] The brake pedal assembly system provided by the application generates control signals through signals collected by a sensor. The control signals are used to control the driving device to generate different torques. The generated torques can generate different pedal force feelings on the pedal body through the transmission device, so that the pedal force can be accurately tracked, that is, the driver can obtain accurate pedal force feedback. BRIEF DESCRIPTION OF DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Moreover, the same reference numerals are used throughout the same figures. In the drawings:

[0043] Figure 1 A brake system overall structure diagram is provided for an embodiment of the application;

[0044] Figure 2 A more preferred brake pedal assembly system structure diagram is provided for an embodiment of the application;

[0045] Figure 3 A corresponding brake pedal assembly system partial structure diagram is provided for an embodiment of the application; Figure 2

[0046] Figure 4 A brake pedal control method flow chart is provided for an embodiment of the application;

[0047] Figure 5 A control strategy diagram corresponding to the brake pedal control method is provided for an embodiment of the application. DETAILED DESCRIPTION

[0048] In order to make the above objectives, characteristics and advantages of the application more apparent, comprehensible and easy to understand, the application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, are only a part of the embodiments of the application, and are not used to limit the application.

[0049] The inventor found that the current electronic mechanical brake system cannot provide good force feeling feedback to the driver when the driver steps on the brake pedal, because the electronic mechanical brake system directly controls the four-wheel brake through an electric signal to brake.​

[0050] The inventor further found that the current solution to this problem is to additionally design a device that can simulate the pedal force feeling, which uses long rack, spring and other structures, and the whole device is large in size and complex in structure.

[0051] The inventor further found that the device is essentially another form of brake master cylinder, and also has traditional brake system components such as springs, U-shaped forks and push rods. The long rack used in the device has low accuracy in measuring pedal stroke, which makes the pedal feeling feedback not timely and accurate. In addition, the force generated by the spring also needs to be considered in the pedal force feeling control process. Since the force generated by the spring is uncontrollable, it will cause the pedal force control process to be unable to accurately track the target pedal force, especially in the low pedal force stage, the spring reaction force occupies a large proportion, making the pedal force feeling simulation more inaccurate.

[0052] In view of the above problems, the present application creatively proposes a brake pedal assembly system, a brake pedal control method, an electronic mechanical brake system and a vehicle after a large amount of research and testing. The technical solutions of the present application are explained and described in detail below.

[0053] The brake pedal assembly system proposed by the present application comprises a detection device, a driving device, a transmission device and a pedal body. The detection device is used to collect target signals; the transmission device is connected with the driving device and the pedal body respectively. The driving device is used to generate different torques according to the control signals, and the different pedal force feelings are generated on the pedal body through the transmission device. Among them, the control signals are generated according to the target signals. The pedal body comprises a pedal, a pedal surface, a pedal shaft and a pedal arm.

[0054] Since it is necessary to use the driving device to provide a torque to generate pedal force feeling on the pedal body, that is, to generate feedback torque on the pedal surface, the torque provided by the driving device needs to be transmitted to the pedal surface through the transmission device to simulate the brake pedal force feeling. The transmission device not only has the function of torque transmission, but also can amplify the torque, so as to increase the range of pedal force feeling simulation.

[0055] Since the return spring device in the traditional structure is cancelled, the driving device needs to be reversed to realize the pedal position control, such as pedal return, so some signal recognition is needed to control the rotation of the driving device to control the specific brake intention and then control the rotation of the driving device. Based on this consideration, it is creatively proposed to identify the specific brake intention by the force of the stepped pedal and the rotation of the pedal shaft, that is, whether the stepped pedal is stepped or released, and then control the rotation of the driving device to provide pedal force feeling or make the pedal return. The preferred selection of the driving device includes a motor.

[0056] In some possible embodiments, the target signals include force signals and rotation signals. Preferably, the force signals include pedal force signals of the pedal, and the rotation signals include pedal rotation angle signals and pedal rotation speed signals. The detection device includes first and second detection devices. The first detection device is fixed to the pedal surface and used to collect the force signals applied to the pedal surface, and the second detection device is fixed to the pedal rotation shaft and used to collect the rotation signals applied to the pedal rotation shaft.

[0057] Preferably, the first detection device includes a pressure sensor fixed to the pedal surface and used to collect the pedal force applied to the pedal surface to obtain the pedal force signals. The obtained pedal force signals can be transmitted to the controller through various communication modes (for example, CAN, wireless communication mode, etc.).

[0058] In some possible embodiments, the second detection device preferably includes a rotation angle and speed sensor fixed to the pedal rotation shaft and used to collect the pedal rotation angle and speed to obtain the pedal rotation angle signals and the pedal rotation speed signals. It should be noted that the rotation angle and speed sensor is preferably selected to be an integrated sensor, and of course, it can also be two sensors of a rotation angle sensor and a rotation speed sensor. Regardless of the structure of the sensor, the sensor can collect the relevant information of the rotation angle and speed.

[0059] For the transmission device, the preferred structure includes a bevel gear set including first and second bevel gears. The first bevel gear is fixed to the pedal rotation shaft, and the second bevel gear is fixedly connected with the rotation shaft of the driving device. The first and second bevel gears are 90 degrees relative to each other. Through the bevel gear set with such a structure, the torque provided by the driving device can be transmitted to the pedal surface to simulate the brake pedal force feeling, and the torque can be amplified by the gear ratio to increase the range of the pedal force feeling simulation.

[0060] In order to better understand and clearly illustrate the structure of the brake pedal assembly system provided by the present application, refer to the overall structure diagram of the brake system shown in Figure 1 The brake pedal assembly system 1 provided by the present application is applied to an electronic mechanical brake system, and does not have the booster, master cylinder, brake pipeline and other components of the traditional hydraulic brake system. The brake pedal assembly system 1 only outputs the pedal rotation angle, rotation speed, pedal force and other signals to the controller 2, and the controller 2 directly transmits the electrical signals to control the four actuators 3 to brake the vehicle.

[0061] Refer to the structure diagram of a preferred brake pedal assembly system shown in Figure 2 Figure 2 ​The brake pedal assembly system comprises a pedal 10, a first detecting device 20 fixed on the pedal 10, a pedal arm 30 rigidly connected with the pedal 10, a pedal pivot 40 rigidly connected with the pedal arm 30. The pedal arm 30 is rigidly connected with one end of the pedal 10 and the other end of the pedal pivot 40.

[0062] Preferably, the brake pedal assembly system further comprises a brake light switch 50. Figure 2 The brake light switch 50 is fixed on the pedal arm 30 and is used to open or close according to the real-time state of the pedal 10, so as to make the brake light on or off. Generally, when the pedal 10 is stepped on, the pedal arm 30 drives the brake light switch 50 to separate from the pedal arm 30, the brake light switch 50 is closed, and the brake light is on. When the pedal 10 is not stepped on or is released, the pedal arm 30 is attached to the brake light switch 50, the brake light switch 50 is opened, and the brake light is off.

[0063] The brake pedal assembly system is combined with Figure 3 The brake pedal assembly system is combined with Figure 3 The motor 80 represents the driving device, and the bevel gear set 90 represents the transmission device. The brake pedal assembly system is combined with Figure 2 It can be seen that the motor 80 is fixed on the pedal rear support 100 by bolts, the rotating shaft of the motor 80 is fixedly connected with one gear of the bevel gear set 90, and the other gear of the bevel gear set 90 is fixedly connected with the pedal pivot 40. The pedal pivot 40 is movably connected with the pedal base 60; the pedal rear support 100 is embeddedly fixed in the pedal base 60; the pedal base 60 is fixedly connected with the pedal upper support 70; thus the entire brake pedal assembly system can be fixedly connected with the vehicle body through the pedal base 60 and the pedal upper support 70.

[0064] The second detecting device 110 is fixed on the pedal pivot 40, and when the pedal pivot 40 rotates, it can collect the rotation angle signal and the rotation speed signal. Figure 3 The bevel gear set 90 represents the transmission device, which comprises a first bevel gear and a second bevel gear. The first bevel gear is fixed on the pedal pivot, the second bevel gear is fixedly connected with the rotating shaft of the motor 80, and the first bevel gear and the second bevel gear are meshed at an angle of 90 degrees.

[0065] The target signals collected by the detection device are all sent to the controller, which determines the real-time state of the pedal according to the target signals; the controller generates a first control signal or a second control signal according to the target signals and in combination with the real-time state of the pedal, the first control signal causing the driving device to generate a first torque, and the second control signal causing the driving device to generate a second torque; the controller generates a third control signal according to the signals collected by the detection device and in combination with the lower limit value of the pedal stroke, the third control signal causing the driving device to generate a third torque.

[0066] The real-time state of the pedal includes a pedal stepping state or a pedal releasing state; when the real-time state of the pedal is the pedal stepping state, different pedal force sensations need to be generated on the pedal according to the size of the pedal pressure, so the controller generates a first control signal and sends it to the driving device, which generates a first torque according to the first control signal.

[0067] When the real-time state of the pedal is the pedal releasing state, the pedal needs to be restored to the initial position in time, so the controller generates a second control signal and sends it to the driving device, which generates a second torque according to the second control signal.

[0068] In addition, there is a special case that the stroke of the pedal has a limit, so when the value of the angle signal in the target signals collected by the detection device is greater than or equal to the lower limit value of the pedal stroke, the controller generates a third control signal and sends it to the driving device, which generates a third torque according to the third control signal.

[0069] In the embodiment of the application, the driving device is preferably an electric motor, and the electric motor is preferably a stepping motor. The electric motor generates a first torque, a second torque and a third torque according to the control signals from the controller. The first torque generates a pedal force sensation on the pedal surface through the transmission device and the pedal shaft, and the value of the first torque is less than the value of the pedal force collected on the pedal surface. In this way, the driver can well feel the pedal force sensation, and the pedal cannot be stepped and cannot be braked in time due to the value of the first torque being not less than the value of the pedal force collected on the pedal surface.

[0070] The second torque is to make the pedal return to the initial position in time, i.e., to the position when the pedal is not stepped, which drives the transmission device and the pedal shaft to rotate through the rotation of the electric motor, so as to control the pedal to return from the stepped position to the initial position when the pedal is not stepped.

[0071] The third torque is to make the pedal keep still at the lower limit position of the stroke, which controls the pedal to keep at the position corresponding to the lower limit value of the pedal stroke by controlling the electric motor to stop rotating and locking the transmission device and the pedal shaft. In addition, different lower limit values of the pedal stroke can be set to adjust the range of the pedal stroke.

[0072] Through the above description, the brake pedal assembly system makes the driver feel the current braking force well, and the sudden braking state does not occur at will, thereby bringing a good driving experience to the driver and the passengers in the vehicle. The brake pedal assembly system has a simple and compact structure and is easy to arrange, and can be adapted to various vehicle models. Moreover, the motor feedback torque is used to simulate the pedal force feeling, and the feedback force feeling can be autonomously and flexibly controlled, so that the brake pedal assembly system will not involve the problem of the lever ratio in the traditional brake pedal, and the design of the pedal part will be simpler.

[0073] Based on the brake pedal assembly system, the application further provides a brake pedal control method. The brake pedal control method is applied to the brake pedal assembly system as explained and described above, and a flowchart of the brake pedal control method is shown in FIG. 4, which includes the following steps. Figure 4

[0074] Step 401: receiving a target signal collected by a detection device.

[0075] The controller receives the target signal collected by the detection device. For example, the signal collected by the first detection device is the pedal force signal applied to the pedal surface, the signal collected by the second detection device is the pedal rotation angle signal and the pedal rotation speed signal, and the controller receives the pedal force signal, the pedal rotation angle signal and the pedal rotation speed signal. In the embodiment of the application, the controller is preferably an ECU (electronic controller), but can also be other devices with signal processing function, such as a VCU (vehicle controller) and the like.

[0076] Step 402: generating a control signal according to the target signal and the real-time state of the pedal and sending the control signal to the driving device, and causing the driving device to generate different torques according to the control signal, and the different torques generate different pedal force feelings on the pedal body through the transmission device.

[0077] The controller first determines the real-time state of the pedal according to the target. The real-time state of the pedal includes a pedal stepping state or a pedal releasing state.

[0078] If the pedal force signal on the pedal surface is not received, or the pedal rotation angle signal and the pedal rotation speed signal are not received, it is determined that the real-time state of the pedal is the pedal releasing state; if the pedal force signal on the pedal surface, the pedal rotation angle signal and the pedal rotation speed signal are received, it is determined that the real-time state of the pedal is the pedal stepping state. It should be noted that one of the pedal stepping states is a state of directly stepping to the lower limit value of the pedal stroke, which needs special processing. The specific description is given in the above text, and will not be repeated here.

[0079] ​After receiving the target signal, a control signal is generated based on the real-time status of the pedal and sent to the drive unit. This causes the drive unit to produce different torques according to the control signal. These torques, through the transmission device and pedal shaft, generate pedal force on the pedal surface and control the pedal's position. Specifically:

[0080] If the value of the received angle signal is not greater than the lower limit of the pedal travel and the pedal is in the real-time state of being pressed, a first control signal is generated. This first control signal causes the first torque generated by the drive device to generate pedal force on the pedal surface through the transmission device and the pedal shaft.

[0081] If the value of the received angle signal is not greater than the lower limit of the pedal travel and the pedal is in the released state in real time, a second control signal is generated. This second control signal causes the second torque generated by the drive device to control the pedal to return from the pressed position to the initial position when it is not pressed through the transmission device and the pedal shaft.

[0082] If the value of the received angle signal is greater than or equal to the lower limit of the pedal travel, a third control signal is generated. This third control signal causes the third torque generated by the drive device to control the pedal to remain at the position corresponding to the lower limit of the pedal travel through the transmission device and the pedal shaft.

[0083] The above-mentioned brake pedal control method can be combined with Figure 5 The control strategy diagram shown provides a clearer understanding. Taking the ECU as the controller, the pressure sensor as the first detection device, the angle and speed sensors as the second detection devices, and the stepper motor as the drive device as an example: the pressure sensor outputs the pedal force signal F, and the angle and speed sensors output the pedal angle signal α and the pedal speed signal ω, all three signals are sent to the ECU.

[0084] The ECU uses three received signals—pedal force signal F, pedal angle signal α, and pedal speed signal ω—to determine whether the driver intends to press or release the pedal, i.e., to assess the real-time pedal status. If the braking intention is determined to be pressing the pedal, a signal I is output to the stepper motor to control it to output a positive variable current, thus controlling the stepper motor to rotate in the forward direction. This, through a bevel gear set, distributes the first torque of the stepper motor (…). Figure 5 Using T m (Representing three torques) are transmitted to the pedal surface, thus providing the driver with real-time feedback on the pedal force.

[0085] If the braking intention is determined to be pedal release, a signal -I is output to the stepper motor to control the stepper motor to output reverse current, causing the stepper motor to rotate in the opposite direction. This generates a smaller second torque, returning the pedal to its unpressed position. It should be noted that whether the motor provides the first torque in the forward direction and the second torque in the reverse direction, or vice versa, can be determined based on actual needs. The only requirement is that the pedal shaft can rotate in both clockwise and counterclockwise directions.

[0086] When the pedal angle reaches or exceeds the set lower limit value α of the pedal travel. max At that time, a signal I = I is output to the stepper motor. max This controls the stepper motor to generate a third torque, stopping its rotation and holding the pedal at its lower limit position. Furthermore, different lower limit values ​​α of the pedal travel can be set. max This allows for adjustment of the pedal travel range.

[0087] Based on the above-described intelligent brake pedal assembly system, this embodiment of the invention also provides an electromechanical braking system, which includes: a brake pedal assembly system as described above and a controller;

[0088] The controller determines the real-time status of the pedal based on the target signal;

[0089] The controller generates a control signal based on the target signal and the real-time status of the pedal, causing the drive device to generate torque. This torque generates different pedal force sensations on the pedal body through the transmission device.

[0090] Based on the above-described intelligent brake pedal assembly system, this embodiment of the invention also provides a vehicle, the vehicle including: the electromechanical braking system described above.

[0091] In summary, the brake pedal assembly system provided by this invention includes: a detection device, a drive device, and a transmission device. The detection device is used to acquire target signals; the transmission device is connected to the drive device and the pedal shaft respectively; the drive device is used to generate different torques according to the control signal, and these torques generate different pedal force sensations on the pedal surface through the transmission device and the pedal shaft.

[0092] This invention addresses the problem that traditional electromechanical braking systems fail to provide drivers with adequate force feedback when pressing the brake pedal. It creatively proposes a completely new brake pedal assembly system that integrates functions such as pedal force feedback, pedal return, and pedal travel range adjustment.

[0093] The brake pedal assembly system generates a control signal through the signals collected by the sensor. The control signal is used to control the driving device to generate different torques. The generated torque can generate different pedal force feelings on the pedal body through the transmission device, so that the pedal force can be accurately tracked, that is, the driver can get accurate pedal force feedback.

[0094] Meanwhile, the torque generated by the driving device can also be used to control the pedal to be in different positions, which is equivalent to controlling the automatic return of the pedal and adjusting the pedal stroke range. The entire brake pedal assembly system has a simple and compact structure and is easy to arrange, and can be adapted to various vehicle models. And because the feedback torque of the driving device is used to simulate the pedal force feeling, the feedback torque can be autonomously and flexibly controlled, so the brake pedal assembly system will not involve the lever ratio problem in the traditional brake pedal, and the design of the pedal part will be simpler and more practical.

[0095] Although the preferred embodiments of the embodiments of the application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the application.

[0096] Finally, it should be noted that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations exist in any such actual relationship or order. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or terminal devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or terminal devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or terminal device including the element.

[0097] The embodiments of the application are described above in conjunction with the drawings, but the application is not limited to the specific embodiments described above, which are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the scope protected by the claims, which are all within the protection of the application.

Claims

1. A brake pedal assembly system, characterized in that, The brake pedal assembly system includes: a detection device, a drive device, a transmission device, and a pedal body; The detection device is used to acquire target signals; The transmission device is connected to the drive device and the pedal body respectively; The drive device is used to generate different torques according to the control signal, and the torques generate different pedal force sensations on the pedal body through the transmission device. The control signal is generated based on the target signal and the real-time state of the pedal; the real-time state of the pedal includes the pedal being pressed or the pedal being released. The pedal body includes a pedal and a pedal surface; the driving device generates a first torque, a second torque, or a third torque according to the control signal. The first torque generates the pedal force sensation on the pedal surface through the transmission device to accurately track the pedal force at the pedal position; The second torque, through the transmission device, controls the pedal to return from the current pedal position to the initial position when the pedal is not pedaled; The third torque, through the transmission device, controls the pedal to remain at the position corresponding to the lower limit of the pedal travel.

2. The brake pedal assembly system according to claim 1, characterized in that, The target signals include force signals and rotation signals.

3. The brake pedal assembly system according to claim 2, characterized in that, The force signal includes: the pedal force signal when the pedal is pressed; The rotation signals include: pedal angle signal and pedal speed signal.

4. The brake pedal assembly system according to claim 2, characterized in that, The detection device includes: a first detection device and a second detection device; the pedal body includes: a pedal surface and a pedal pivot. The first detection device is fixed to the pedal surface and is used to collect the force signal applied to the pedal surface; The second detection device is fixed on the pedal shaft and is used to collect the rotation signal applied to the pedal shaft.

5. The brake pedal assembly system according to claim 1, characterized in that, The pedal body includes: a pedal shaft; the transmission device includes: a bevel gear set; The bevel gear set includes a first bevel gear and a second bevel gear, wherein the first bevel gear is fixed on the pedal shaft, the second bevel gear is fixedly connected to the shaft of the drive device, and the first bevel gear and the second bevel gear mesh with each other.

6. The brake pedal assembly system according to claim 1, characterized in that, The pedal body includes: a pedal surface; the driving device generates a first torque according to the control signal, the value of the first torque being less than the value of the pedal force applied to the pedal surface.

7. The brake pedal assembly system according to claim 1, characterized in that, The drive unit is fixed on the rear support of the pedal, and the rear support of the pedal is fixedly connected to the pedal base.

8. The brake pedal assembly system according to claim 1, characterized in that, The pedal body includes: a pedal arm and a pedal pivot; the pedal arm and the pedal pivot are rigidly connected. The pedal pivot is movably connected to the pedal base; The pedal base is fixedly connected to the pedal bracket; The pedal bracket is fixedly connected to the vehicle body.

9. The brake pedal assembly system according to claim 1, characterized in that, The pedal body includes: a pedal arm; the brake pedal assembly system also includes: a brake light switch; The brake light switch is fixed on the pedal arm and is used to open or close according to the real-time status of the pedal, so that the brake light is turned on or off.

10. The brake pedal assembly system according to claim 8, characterized in that, When the pedal is in the depressed state, the pedal arm is disengaged from the brake light switch, and the brake light switch is closed to illuminate the brake light. When the pedal is not pressed, the pedal arm is in contact with the brake light switch, and the brake light switch is turned off so that the brake light is extinguished.

11. A brake pedal control method, characterized in that, The brake pedal control method is applied to the brake pedal assembly system according to any one of claims 1-10, and the brake pedal control method includes: Receive target signals collected by the detection device; Based on the target signal, a control signal is generated in combination with the real-time status of the pedal and sent to the drive device, and the drive device generates different torques according to the control signal. These torques generate different pedal force sensations on the pedal body through the transmission device. The pedal body includes a pedal and a pedal surface; the driving device generates a first torque, a second torque, or a third torque according to the control signal. The first torque generates the pedal force sensation on the pedal surface through the transmission device to accurately track the pedal force at the pedal position; The second torque, through the transmission device, controls the pedal to return from the current pedal position to the initial position when the pedal is not pedaled; The third torque, through the transmission device, controls the pedal to remain at the position corresponding to the lower limit of the pedal travel.

12. An electromechanical braking system, characterized in that, The electromechanical braking system includes: a brake pedal assembly system and a controller as described in any one of claims 1-10; The controller determines the real-time status of the pedal based on the target signal; The controller generates a control signal based on the target signal and the real-time state of the pedal, causing the drive device to generate torque. This torque generates different pedal force sensations on the pedal body through the transmission device assembly. The pedal body includes a pedal and a pedal surface; the driving device generates a first torque, a second torque, or a third torque according to the control signal. The first torque generates the pedal force sensation on the pedal surface through the transmission device to accurately track the pedal force at the pedal position; The second torque, through the transmission device, controls the pedal to return from the current pedal position to the initial position when the pedal is not pedaled; The third torque, through the transmission device, controls the pedal to remain at the position corresponding to the lower limit of the pedal travel.

13. A vehicle, characterized in that, The vehicle includes: the electromechanical braking system as described in claim 12.

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