Brake pedal assembly system, control method, electronic mechanical brake system and vehicle

Abstract

The invention provides a brake pedal assembly system, a control method and an electronic mechanical brake system, and relates to the field of automobile safety. The transmission device is connected with the driving device and the pedal rotating shaft. The driving device generates different moments according to the control signals, and the moments generate pedal force feeling on the pedal face through the transmission device and the pedal rotating shaft. A control signal is generated through a signal collected by a sensor. And the driving device is controlled by the control signal to generate different moments. The generated torque 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, and a driver can obtain accurate pedal force feedback.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile safety, and in particular to a brake pedal assembly system, a brake pedal control method, an electronic mechanical brake system and a vehicle. Background Art

[0002] The automobile braking system is extremely important for the safety of the automobile and the safety of the drivers and passengers. There are two types of commonly used braking systems: one is the hydraulic braking system; the other is the EMB (Electronic Mechanical Brake).

[0003] The hydraulic brake system requires mechanical and hydraulic components such as the brake master cylinder and brake pipe, and has problems such as complex structure, large space occupation, and slow system response. It is gradually being replaced by electronic mechanical brake systems.

[0004] The electronic mechanical brake system eliminates the mechanical and hydraulic components such as the master cylinder and brake pipe in the traditional hydraulic brake system, and directly controls the brakes of the four wheels through electrical signals. However, when the driver steps on the brake pedal, the foot on the pedal cannot accurately get a good feedback force from the brake system, which will seriously reduce the driver's braking comfort and driving experience, and make it impossible for the driver to judge the current braking force, resulting in inaccurate braking of the vehicle and dangers such as sudden braking or failure to brake. Summary of the invention

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

[0006] An embodiment of the present invention provides a brake pedal assembly system, the brake pedal assembly system comprising: a detection device, a drive device, a transmission device and a pedal body;

[0007] The detection device is used to collect target signals;

[0008] The transmission device is connected to the driving device and the pedal body respectively;

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

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

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

[0012] Optionally, the force signal comprises: a pedal force signal of pedaling;

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

[0014] Optionally, the detection device includes: a first detection device and a second detection device; the pedal body includes: a pedal surface and a pedal shaft;

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

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

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

[0018] 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 driving device, and the first bevel gear and the second bevel gear are meshed with each other.

[0019] Optionally, the pedal body includes: a pedal surface; the driving device generates a first torque according to the control signal, and the value of the first torque is smaller than the value of the pedal force applied to the pedal surface.

[0020] Optionally, the pedal body comprises: 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;

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

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

[0023] The third torque controls the pedal to maintain at a 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 bracket, and the pedal rear bracket is fixedly connected to the pedal base;

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

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

[0027] The pedal base is fixedly connected to the pedal upper bracket;

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

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

[0030] 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 to turn the brake light on or off.

[0031] Optionally, when the pedal is in a stepped 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 a non-stepped state, the pedal arm is in contact with the brake light switch, and the brake light switch is disconnected, so that the brake light is turned off.

[0033] An embodiment of the present invention provides a brake pedal control method, which is applied to any of the above-mentioned brake pedal assembly systems, and the brake pedal control method includes:

[0034] Receiving pedal force signals, pedal angle signals and pedal speed signals collected by sensors;

[0035] According to the pedal force signal, pedal angle signal and pedal speed signal, a control signal is generated in combination with the real-time status of the pedal and sent to the drive device, so that the drive device generates different torques according to the control signal, and the torque generates different pedal force sensations on the pedal body through the transmission device.

[0036] An embodiment of the present invention further provides an electromechanical brake system, the electromechanical brake system comprising: a brake pedal assembly system and a controller as described above;

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

[0038] The controller generates a control signal based on the target signal and the real-time status of the pedal to enable the drive device to generate a torque, and the torque generates different pedal force sensations on the pedal body through the transmission device group.

[0039] An embodiment of the present invention further provides a vehicle, comprising: the electronic mechanical braking system as described above.

[0040] The brake pedal assembly system provided by the present invention includes: a detection device, a driving device and a transmission device. The detection device is used to collect target signals; the transmission device is connected to the driving device and the pedal shaft respectively; the driving device is used to generate different torques according to the control signal, and the torque generates different pedal force sensations on the pedal surface through the transmission device and the pedal shaft.

[0041] The brake pedal assembly system of the present invention generates a control signal through the signal 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0043] Figure 1 An overall structural diagram of a braking system provided by an embodiment of the present invention;

[0044] Figure 2 A structural diagram of a preferred brake pedal assembly system provided in one embodiment of the present invention;

[0045] Figure 3 Corresponding to an embodiment of the present invention Figure 2 A partial structural diagram of the brake pedal assembly system shown;

[0046] Figure 4 A flow chart of a brake pedal control method provided by an embodiment of the present invention;

[0047] Figure 5 A control strategy diagram of a brake pedal control method provided in accordance with an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, are only part of the embodiments of the present invention, not all of the embodiments, and are not used to limit the present invention.

[0049] The inventors have found that the current electromechanical brake system cannot provide the driver with good force feedback when stepping on the brake pedal. This is because the electromechanical brake system directly controls the brakes of the four wheels through electrical signals.

[0050] The inventor further discovered that the current solution to this problem is to design an additional device that can simulate the pedal force. The device uses a long rack, a spring and other structures, and the entire device is large in size and complex in structure.

[0051] The inventors further studied and found that the device is essentially just another form of brake master cylinder, and it also has traditional brake system components such as springs, U-shaped forks and push rods. The pedal stroke measured by the device using a long rack has low accuracy, making the pedal feel feedback not timely and accurate. In addition, the force generated by the spring needs to be considered during the pedal force control process. Since the force generated by the spring is uncontrollable, it will lead to the inability to accurately track the target pedal force during the overall pedal force control process, especially in the low pedal force stage, the spring reaction force accounts for a large proportion, making the pedal force simulation even more inaccurate.

[0052] In view of the above problems, after extensive research and testing, the present invention creatively proposes a brake pedal assembly system, a brake pedal control method, an electronic mechanical brake system and a vehicle of the present invention. The technical solution of the present invention is explained and illustrated in detail below.

[0053] The brake pedal assembly system of the present invention includes: 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 to the driving device and the pedal body respectively. The driving device is used to generate different torques according to the control signal, and the torque generates different pedal force feelings on the pedal body through the transmission device. Among them, the control signal is generated according to the target signal. The pedal body includes: a pedal, a pedal surface, a pedal shaft, and a pedal arm.

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

[0055] Since the return spring device in the traditional structure is eliminated, it is necessary to use the reverse rotation of the driving device to achieve pedal position control, such as returning the pedal to its original position, so it is also necessary to identify the specific braking intention through some signals and then control the rotation of the driving device. Based on this consideration, it is creatively proposed to identify the specific braking intention based on the force of stepping on the pedal and the rotation of the pedal shaft to identify whether the specific braking intention is stepping on the pedal or releasing the pedal, and then control the rotation of the driving device to provide a pedal force sense or return the pedal to its original position. The preferred choices for the driving device include: a motor.

[0056] In some possible embodiments, the target signal includes: a force signal and a rotation signal. More preferably, the force signal includes: a pedal force signal of stepping on the pedal; the rotation signal includes: a pedal angle signal and a pedal speed signal. The detection device includes: a first detection device and a second detection device. The first detection device is fixed on 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.

[0057] The preferred choice of the first detection device includes: a pressure sensor; the pressure sensor is fixed on the pedal surface, and is used to collect the pedal force applied on the pedal surface to obtain a pedal force signal. The obtained pedal force signal can be transmitted to the controller through a variety of communication methods (for example: CAN, wireless and other communication methods).

[0058] In some possible embodiments, the preferred choice of the second detection device includes: a rotation angle and speed sensor; the rotation angle and speed sensor is fixed on the pedal shaft and is used to collect the pedal rotation angle and speed to obtain a pedal rotation angle signal and a pedal speed signal. It should be noted that the preferred choice of the rotation angle and speed sensor is to select a sensor with an integrated structure. Of course, it can also be two sensors, a rotation angle sensor and a speed sensor. Regardless of the structural form of the sensor, it is sufficient as long as it can collect relevant information about the rotation angle and speed.

[0059] For the transmission device, its preferred structure includes: a bevel gear set, which includes: a first bevel gear and a second bevel gear, wherein the first bevel gear is fixed to the pedal shaft, the second bevel gear is fixedly connected to the shaft of the driving device, and the first bevel gear and the second bevel gear are meshed with each other at 90 degrees. The bevel gear set with this structure can not only transmit the torque provided by the driving device to the pedal surface, thereby simulating the brake pedal force, but also amplify the torque by using the gear ratio, thereby increasing the range of pedal force simulation.

[0060] In order to better understand and clearly illustrate the structure of the brake pedal assembly system of the present invention, refer to Figure 1 As shown in the overall structure diagram of the braking system, the brake pedal assembly system 1 proposed by the present invention is applied to an electronic mechanical braking system. It does not have components such as a booster, a master cylinder, and a brake line of a traditional hydraulic braking system. The brake pedal assembly system 1 is only responsible for outputting signals such as a pedal angle, a rotation speed, and a pedal force to a controller 2. The controller 2 uses wires to directly transmit electrical signals to control four actuators 3 to brake the vehicle.

[0061] Reference Figure 2 A structural diagram of a preferred brake pedal assembly system is shown in FIG. Figure 2The invention comprises a pedal 10, on which a first detection device 20 is mounted. The pedal 10 is rigidly connected to a pedal arm 30, and the pedal arm 30 is rigidly connected to a pedal shaft 40. In this way, when the pedal 10 is stepped on or released, the pedal shaft 40 rotates accordingly. One end of the pedal arm 30 is rigidly connected to the pedal 10, and the other end is rigidly connected to the pedal shaft 40.

[0062] Preferably, the brake pedal assembly system further includes: a brake light switch 50; Figure 2 The brake light switch 50 is shown as an example in the figure. The brake light switch 50 is fixed on the pedal arm 30 and is used to open or close according to the real-time status of the pedal 10 to turn 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 is closed, and the brake light is on; when the pedal 10 is not stepped on or in the pedal release state, the pedal arm 30 and the brake light switch 50 are attached, the brake light switch 50 is disconnected, and the brake light is off.

[0063] Combination Figure 3 The partial structural diagram of the brake pedal assembly system shown in the figure, Figure 3 In the figure, the motor 80 represents the driving device, and the bevel gear set 90 represents the transmission device. Figure 2 It can be seen that the motor 80 is fixed to the pedal rear bracket 100 by bolts, the rotating shaft of the motor 80 is fixedly connected to one gear in the bevel gear set 90, and the other gear in the bevel gear set 90 is fixedly connected to the pedal shaft 40. The pedal shaft 40 is movably connected to the pedal base 60; the pedal rear bracket 100 is embedded and fixed in the pedal base 60; the pedal base 60 is fixedly connected to the pedal upper bracket 70; therefore, the entire brake pedal assembly system can be fixedly connected to the vehicle body through the pedal base 60 and the pedal upper bracket 70.

[0064] The second detection device 110 is fixed on the pedal shaft 40 , and can collect a rotation angle signal and a rotation speed signal when the pedal shaft 40 rotates. Figure 3 The transmission device is exemplified by a bevel gear set 90, wherein 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, and the second bevel gear is fixedly connected to the shaft of the motor 80, and the first bevel gear and the second bevel gear are meshed with each other at ninety degrees.

[0065] The target signals collected by the detection device are sent to the controller, and the controller determines the real-time state of the pedal according to the target signal; the controller generates a first control signal or a second control signal according to the target signal and the real-time state of the pedal, and the first control signal causes the drive device to generate a first torque, and the second control signal causes the drive device to generate a second torque; the controller generates a third control signal according to the signal collected by the detection device and the lower limit of the pedal stroke, and the third control signal causes the drive device to generate a third torque. Specifically:

[0066] The real-time state of the pedal includes: pedaling state or pedal releasing state; when the real-time state of the pedal is pedaling 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 drive device, and the drive device generates a first torque according to the first control signal.

[0067] When the real-time state of the pedal is the pedal-release state, the pedal needs to be restored to its initial position in time, so the controller generates a second control signal and sends it to the drive device. The second control signal is different from the first control signal generated by stepping on the pedal, and the drive device generates a second torque according to the second control signal.

[0068] In addition, there is a special case, that is, the pedal stroke is limited. Therefore, when the value of the angle signal in the collected target signal 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 drive device, and the drive device generates a third torque according to the third control signal.

[0069] In the embodiment of the present invention, the driving device is preferably a motor, and the motor is preferably a stepper motor. The motor generates a first torque, a second torque, and a third torque according to a control signal from a controller. The first torque generates a pedal force sense on the pedal surface through a transmission device and a pedal shaft, and the value of the first torque is less than the value of the pedal force collected and applied on the pedal surface. In this way, not only the driver can feel the pedal force sense well, but also the problem of the pedal being unable to be stepped on and the brake being unable to be braked in time will not be caused by the value of the first torque being not less than the value of the pedal force collected and applied on the pedal surface.

[0070] The second torque is to restore the pedal to its initial position in time, that is, to the position when the pedal is not stepped on. The second torque drives the transmission device and the pedal shaft to rotate through the rotation of the motor, thereby controlling the pedal to return from the stepped position to the initial position when the pedal is not stepped on.

[0071] The third torque is to keep the pedal at the lower limit position of its stroke, and it controls the motor to stop rotating, locks the transmission device and the pedal shaft, and thus controls the pedal to remain at the position corresponding to the lower limit value of the pedal stroke. In addition, the pedal stroke range can be adjusted by setting different lower limit values ​​of the pedal stroke.

[0072] Through the above description, the brake pedal assembly system proposed by the present invention allows the driver to feel the current braking force very well, and will not randomly appear in the emergency braking state, which brings a good driving experience to the driver and the passengers in the car. The entire brake pedal assembly system has a simple and compact structure and is easy to arrange, and can adapt to a variety of vehicle models. And because the motor feedback torque is used to simulate the pedal force, the feedback force can be flexibly adjusted independently, 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.

[0073] Based on the above brake pedal assembly system, the present invention also proposes a brake pedal control method, which is applied to the brake pedal assembly system explained and illustrated above. The flow chart of the brake pedal control method is as follows: Figure 4 As shown, it includes:

[0074] Step 401: Receive 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 a pedal force signal applied to the pedal surface, and the signal collected by the second detection device is a pedal angle signal and a pedal speed signal. The controller receives the pedal force signal, the pedal angle signal, and the pedal speed signal. In the embodiment of the present invention, the controller is preferably an ECU (electronic Control Unit), and of course it can also be other devices with signal processing functions, such as a VCU (Vehicle Control Unit), etc.

[0076] Step 402: Generate a control signal based on the target signal and the real-time status of the pedal and send it to the drive device, so that the drive device generates different torques according to the control signal, and the torque generates different pedal force sensations 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-pressing state or a pedal-releasing state.

[0078] If the pedal force signal on the pedal surface is not received, or the pedal angle signal and pedal speed signal are not received, the real-time state of the pedal is determined to be the pedal release state; if the pedal force signal, pedal angle signal and pedal speed signal on the pedal surface are received, the real-time state of the pedal is determined to be the pedal stepping state. It should be noted that there is a special state in the pedal stepping state, which is the state of directly stepping on the lower limit of the pedal travel. This state requires special processing, which has been described above and will not be repeated here.

[0079] After obtaining the target signal, a control signal is generated in combination with the real-time status of the pedal and sent to the drive device, so that the drive device generates different torques according to the control signal. The torque generates a pedal force sense on the pedal surface through the transmission device and the pedal shaft, and controls the pedal to be in different positions. Specifically:

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

[0081] If the value of the received rotation angle signal is not greater than the lower limit value of the pedal stroke, and the real-time state of the pedal is a released pedal state, a second control signal is generated. The second control signal causes the second torque generated by the drive device to pass through the transmission device and the pedal shaft to control the pedal to return from the stepped position to the initial position when it is not stepped on.

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

[0083] The above brake pedal control method can be combined with Figure 5 The control strategy diagram shown in the figure is more clearly understood. Take the ECU as the controller, the pressure sensor as the first detection device, the angle and speed sensor as the second detection device, and the stepper motor as the driving device as an example: the pressure sensor outputs the pedal force signal F, the angle and speed sensor outputs the pedal angle signal α and the pedal speed signal ω, and all three signals are sent to the ECU.

[0084] The ECU uses the received three signals, pedal force signal F, pedal angle signal α, and pedal speed signal ω, to determine whether the driver intends to step on the pedal or release the pedal, that is, to determine the real-time status of the pedal. If the braking intention is determined to be stepping on the pedal, a signal I is output to the stepper motor to control the stepper motor to output a positive variable current, control the stepper motor to rotate forward, and the first torque ( Figure 5 Use T m Representing three torques) are transmitted to the pedal surface, thereby providing the driver with real-time pedal force feedback.

[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, control the stepper motor to rotate in the opposite direction, and use a smaller second torque to return the pedal to the position when the pedal is not pressed. It should be noted that whether the motor provides the first torque in forward rotation and the second torque in reverse rotation, or the first torque in reverse rotation and the second torque in forward rotation can be determined according to actual needs, and it only needs to realize that the pedal shaft can rotate both clockwise and counterclockwise.

[0086] When the pedal angle reaches or exceeds the set pedal travel lower limit α max When the stepper motor outputs a signal I=I max , thereby controlling the stepper motor to generate the third torque to stop it from rotating and keep the pedal at the lower limit position. And by setting different pedal stroke lower limit values ​​α max To adjust the pedal travel range.

[0087] Based on the above intelligent brake pedal assembly system, an embodiment of the present invention further provides an electromechanical brake system, the electromechanical brake system comprising: any of the above brake pedal assembly systems and a controller;

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

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

[0090] Based on the above-mentioned intelligent brake pedal assembly system, an embodiment of the present invention further provides a vehicle, which includes: the above-mentioned electronic mechanical brake system.

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

[0092] The present invention aims at the problem that the traditional electronic mechanical brake system cannot provide the driver with good force feedback when stepping on the brake pedal, and creatively proposes a brand-new brake pedal assembly system that integrates the functions of pedal force feedback, pedal return, pedal travel range adjustment, etc.

[0093] The brake pedal assembly system generates a control signal through the signal collected by the sensor. The control signal is used to control the drive 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] At the same time, the torque generated by the drive device can also be used to control the pedal to be in different positions, which is equivalent to controlling the pedal to automatically return to its original position and adjusting the pedal travel range. The entire brake pedal assembly system has a simple and compact structure and is easy to arrange, and can be adapted to a variety of vehicle models. In addition, since the drive device feedback torque is used to simulate the pedal force, the feedback force can be flexibly adjusted independently, 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 present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0096] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0097] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A brake pedal assembly system, characterized in that: The brake pedal assembly system includes: 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 to the driving device and the pedal body respectively; The driving device is used to generate different torques according to the control signal, and the torques generate different pedal force feelings on the pedal body through the transmission device; Wherein, the control signal is generated according to the target signal.

2. The brake pedal assembly system according to claim 1, characterized in that: The target signal includes: a force signal and a rotation signal.

3. The brake pedal assembly system according to claim 2, characterized in that: The force signal includes: a pedal force signal of pedaling; The rotation signal includes: a pedal rotation angle signal and a pedal rotation 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 shaft; The first detection device is fixed on 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 comprises: a pedal shaft; the transmission device comprises: 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 driving device, and the first bevel gear and the second bevel gear are meshed with each other.

6. The brake pedal assembly system according to claim 1, characterized in that: The pedal body comprises: a pedal surface; the driving device generates a first torque according to the control signal, and the value of the first torque is smaller 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 pedal body comprises: 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 sense on the pedal surface through the transmission device to accurately track the pedal force at the pedaling position; The second torque controls the pedal to return from the current stepped position to the initial position when the pedal is not stepped on through the transmission device; The third torque controls the pedal to maintain at a position corresponding to the lower limit value of the pedal stroke through the transmission device.

8. The brake pedal assembly system according to claim 1, characterized in that: The driving device is fixed on the pedal rear bracket, and the pedal rear bracket is fixedly connected to the pedal base.

9. The brake pedal assembly system according to claim 1, characterized in that: The pedal body comprises: a pedal arm and a pedal shaft; the pedal arm is rigidly connected to the pedal shaft; The pedal shaft is movably connected to the pedal base; The pedal base is fixedly connected to the pedal upper bracket; The pedal upper bracket is fixedly connected to the vehicle body.

10. 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 to turn the brake light on or off.

11. The brake pedal assembly system according to claim 9, characterized in that: When the pedal is in a stepped 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; When the pedal is in a non-stepped state, the pedal arm is in contact with the brake light switch, and the brake light switch is disconnected, so that the brake light is turned off.

12. 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 to 11, and the brake pedal control method includes: Receiving a target signal collected by a detection device; According to the target signal, a control signal is generated in combination with the real-time status of the pedal and sent to the drive device, so that the drive device generates different torques according to the control signal, and the torque generates different pedal force sensations on the pedal body through the transmission device.

13. An electromechanical braking system, characterized in that: The electromechanical brake system comprises: a brake pedal assembly system and a controller as described in any one of claims 1 to 11; The controller determines the real-time status of the pedal according to the target signal; The controller generates a control signal based on the target signal and the real-time status of the pedal to enable the drive device to generate a torque, and the torque generates different pedal force sensations on the pedal body through the transmission device group.

14. A vehicle, characterized in that: The vehicle comprises: the electromechanical braking system as claimed in claim 13.

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