Stabilizer bar assembly control method, stabilizer bar assembly control system and vehicle

Abstract

The invention discloses a control method of a stabilizer bar assembly, a control system of the stabilizer bar assembly and a vehicle, the control method of the stabilizer bar assembly is suitable for switching the operation state through an execution module, and the control method comprises the steps that the on-off state of the execution module is obtained; when the on-off state is an on state, the state of the whole vehicle is obtained; when the whole vehicle state meets the switching condition, the function state of a stabilizer bar assembly is obtained; and when the function state is normal, the execution module is controlled to drive the stabilizer bar assembly to switch the operation state. According to the control method of the stabilizer bar assembly, on the premise that the safety of the whole vehicle is guaranteed, the running state of the stabilizer bar assembly is automatically recognized and switched, manual operation of a driver is reduced, the automatic control mode is more timely and effective, and then the running stability and safety of the vehicle are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to a control method for a stabilizer bar assembly, a control system for a stabilizer bar assembly, and a vehicle. Background Art

[0002] In existing motor vehicles, in order to reduce the roll of the vehicle body during turning, a lateral stabilizer bar is equipped in the vehicle suspension to improve the roll stiffness of the entire vehicle suspension, and improve the handling and safety of the vehicle. The principle of the lateral stabilizer bar is to complete the coupling of the left and right suspensions by connecting the lateral stabilizer bar to the suspension components (upper / lower control arms, shock absorber struts, steering knuckles, etc.) using suspension rods. When the vehicle turns, the rebound of the suspension will cause the stabilizer bar to twist, generating a moment to resist roll and suspension rebound, thereby achieving the purpose of reducing roll.

[0003] When the vehicle is driven violently, the lateral acceleration of the vehicle changes violently, and a larger stiffness is required from the lateral stabilizer bar, and it is expected that the stabilizer bar is connected; when the vehicle is off-road and driving in large undulating off-road conditions, a larger wheel jump stroke is required, and it is hoped that the lateral stabilizer bar is completely disconnected. When switching the operating state of the lateral stabilizer bar, the entire system can only be switched manually by the driver, which increases the complexity of the driver's operation and there is room for improvement. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a control method for a stabilizer bar assembly, which can automatically switch the connection and disconnection of the stabilizer bar assembly, reduce the manual operation of the driver, and ensure the driving safety of the vehicle.

[0005] According to the control method for a stabilizer bar assembly of an embodiment of the present invention, the stabilizer bar assembly is adapted to switch the operating state through an execution module, and the control method includes: obtaining the switch state of the execution module; when the switch state is in the open state, obtaining the vehicle state; when the vehicle state meets the switching condition, obtaining the functional state of the stabilizer bar assembly; when the functional state is normal, controlling the execution module to drive the stabilizer bar assembly to switch the operating state.

[0006] According to the control method for a stabilizer bar assembly of an embodiment of the present invention, on the premise of ensuring the safety of the entire vehicle, the operating state of the stabilizer bar assembly is automatically recognized and switched, reducing the manual operation of the driver, and the automatic control method is more timely and effective, thereby ensuring the stability and safety of the vehicle during driving.

[0007] A control method for a stabilizer bar assembly according to some embodiments of the present invention, the control method comprising: obtaining a pre-calibrated relationship table of vehicle speed and lateral acceleration; obtaining the current vehicle speed and the current lateral acceleration; and controlling the execution module to drive the stabilizer bar assembly to switch operating states according to the current vehicle speed, the current lateral acceleration, and the relationship table.

[0008] A control method for a stabilizer bar assembly according to some embodiments of the present invention, the control method comprising: when the current vehicle speed and the current lateral acceleration are at a first critical position in the relationship table, controlling the execution module to drive the stabilizer bar assembly to switch from a connected state to a disconnected state;

[0009] When the current vehicle speed and the current lateral acceleration are at a second critical position in the relationship table, controlling the execution module to drive the stabilizer bar assembly to switch from a disconnected state to a connected state.

[0010] A control method for a stabilizer bar assembly according to some embodiments of the present invention, the obtaining of the vehicle state comprising: obtaining the engine state, the braking system state, the vehicle motion state, the steering system state, the transmission system state, and / or the driving environment state.

[0011] A control method for a stabilizer bar assembly according to some embodiments of the present invention, the control method comprising: when the engine state is in a to-be-started state or a starting state, determining that the vehicle state does not meet the switching condition, and when the engine state is in a normal operating state, determining that the vehicle state meets the switching condition;

[0012] And / or, when the braking system state is a braking state, determining that the vehicle state does not meet the switching condition, and when the braking system state is a non-braking state, determining that the vehicle state meets the switching condition.

[0013] A control method for a stabilizer bar assembly according to some embodiments of the present invention, when it is determined according to the vehicle motion state that the current vehicle speed is greater than or equal to the set vehicle speed, determining that the vehicle state does not meet the switching condition;

[0014] When it is determined according to the vehicle motion state that the current vehicle speed is less than the set vehicle speed, determining that the vehicle state meets the switching condition.

[0015] A control method for a stabilizer bar assembly according to some embodiments of the present invention, the control method comprising: when it is determined in the steering system state that it is in a turning state and the current lateral acceleration is greater than or equal to the set acceleration, determining that the vehicle state does not meet the switching condition;

[0016] When it is determined in the steering system state that it is in a turning state and the current lateral acceleration is less than the set acceleration, determining that the vehicle state meets the switching condition.

[0017] A control method for a stabilizer bar assembly according to some embodiments of the present invention, the control method comprising: when the transmission system is in reverse driving or abnormal driving state, determining that the vehicle state does not meet the switching condition; when the transmission system is in forward driving and normal driving state, determining that the vehicle state meets the switching condition;

[0018] and / or, when there are driving obstacles in the driving environment state, determining that the vehicle state does not meet the switching condition; when the driving environment state is normal and feasible, determining that the vehicle state meets the switching condition.

[0019] The present invention also provides a control system for a stabilizer bar assembly.

[0020] A control system for a stabilizer bar assembly according to an embodiment of the present invention is applicable to the control method of the stabilizer bar assembly in any of the above embodiments, and the control system comprises: an acquisition module, which is used to acquire the switch state of an execution module, acquire the vehicle state, and acquire the functional state of the stabilizer bar assembly;

[0021] a control module, which is used to determine the switch state, the vehicle state and the functional state, and is used to control the execution module to control the stabilizer bar assembly to switch the operating state.

[0022] The present invention also provides a vehicle.

[0023] A vehicle according to an embodiment of the present invention is provided with the control system of the stabilizer bar assembly in the above embodiment.

[0024] The advantages of the vehicle and the above control method for the stabilizer bar assembly and the control system for the stabilizer bar assembly over the prior art are the same and will not be elaborated here.

[0025] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0027] Figure 1 is the logic of the control method for the stabilizer bar assembly according to an embodiment of the present invention Figure 1 ;

[0028] Figure 2 is the relationship table of vehicle speed and lateral acceleration of the control method for the stabilizer bar assembly according to an embodiment of the present invention;

[0029] Figure 3 is the logic of the control method of the stabilizer bar assembly according to an embodiment of the present invention Figure 2 ;

[0030] Figure 4 is the logic of the control method of the stabilizer bar assembly according to an embodiment of the present invention Figure 3 ;

[0031] Figure 5 is the logic flowchart of the control method of the stabilizer bar assembly according to an embodiment of the present invention;

[0032] Figure 6 is the control system architecture diagram of the stabilizer bar assembly according to an embodiment of the present invention. Detailed Embodiments

[0033] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Next, refer to Figures 1 - 6Describe a control method for a stabilizer bar assembly according to an embodiment of the present invention. Through this control method, it is possible to flexibly determine whether to switch the operating state of the stabilizer bar assembly according to the current vehicle state. The switching method is stable and reliable, reducing the driver's operation amount and improving driving convenience.

[0037] As Figures 1 - 6 shown, a control method for a stabilizer bar assembly according to an embodiment of the present invention. The stabilizer bar assembly is adapted to switch the operating state through an execution module. Among them, the operating states of the stabilizer bar assembly include a connected state and a disconnected state. After the execution module receives the execution information, the stabilizer bar assembly can be switched from the connected state to the disconnected state or from the disconnected state to the connected state to adapt to different driving requirements.

[0038] Among them, the control method includes:

[0039] S1: Obtain the switch state of the execution module. The execution module includes an open state and a closed state. When it is in the closed state and it is necessary to switch the operating state of the stabilizer bar assembly, set the execution module to open, and when it is not necessary, set the execution module to close.

[0040] S2: When the switch state is the open state, obtain the vehicle state. Among them, the vehicle state includes: engine state, braking system state, vehicle motion state, steering system state, transmission system state, and / or driving environment state. That is to say, when the switch state is the open state, it is necessary to obtain the operating states of the above different systems and the driving environment state to determine whether the switching condition is met. When different systems are all in the normal operating state and the driving environment is in a safe and unobstructed state, it can be known that the vehicle state is normal and the switching condition is met. On the contrary, the vehicle state is abnormal and the switching condition is not met.

[0041] S3: When the vehicle state meets the switching condition, obtain the functional state of the stabilizer bar assembly. Among them, the judgment of the functional state of the stabilizer bar assembly includes whether there is a fault in its own system and the magnitude of the torque currently received by the stabilizer bar assembly. That is to say, when the vehicle state meets the switching condition, it is also necessary to obtain the functional state of the stabilizer bar assembly to determine whether the switching operation can be performed. When there are no fault signals such as no communication in its own system, hardware structure and pipeline oil leakage of the stabilizer bar assembly, and the magnitude of the torque currently received by the stabilizer bar assembly is stable, it can be known that the function of the stabilizer bar assembly is normal and the switching requirement is met. On the contrary, the function of the stabilizer bar assembly is abnormal and the switching requirement is not met.

[0042] S4: When the functional state is normal, control the execution module to drive the stabilizer bar assembly to switch its operating state. That is, when the functional state is normal, the execution module can be controlled to drive the stabilizer bar assembly to switch its operating state. When the operating state of the stabilizer bar assembly is the connected state, the execution module drives the stabilizer bar assembly to switch to the disconnected state to improve the off-road performance of the vehicle. Or, when the operating state of the stabilizer bar assembly is the disconnected state, the execution module drives the stabilizer bar assembly to switch to the connected state to improve the turning stability of the vehicle on a flat road surface.

[0043] Thus, by using the control method in this embodiment, such as Figure 1 and Figure 5 shown, the connection and disconnection of the stabilizer bar assembly can be flexibly switched according to the driving road conditions and driving state, reducing the risk of the driver using the stabilizer bar assembly in an inappropriate scenario, assisting the driver in controlling the stabilizer bar assembly, greatly reducing the driver's manual operation amount, and improving vehicle intelligence and overall vehicle driving safety.

[0044] According to the control method of the stabilizer bar assembly of the embodiment of the present invention, on the premise of ensuring the safety of the whole vehicle, the operating state of the stabilizer bar assembly is automatically recognized and switched, reducing the driver's manual operation, and the automatic control method is more timely and effective, thus ensuring the driving stability and safety of the vehicle.

[0045] In some embodiments, the control method includes:

[0046] S5: Obtain a pre-calibrated relationship table of vehicle speed and lateral acceleration. Among them, the pre-calibrated relationship table is as Figure 2 shown. The relationship table includes a horizontal vehicle speed coordinate and a vertical lateral acceleration coordinate. And in the coordinate constructed by the vehicle speed and the lateral acceleration, two boundary lines are respectively formed by multiple sets of data values of the vehicle speed and the lateral acceleration. One of the boundary lines is used as a reference to switch the stabilizer bar assembly from the disconnected state to the connected state, and the other boundary line is used as a reference to switch the stabilizer bar assembly from the connected state to the disconnected state.

[0047] S6: Obtain the current vehicle speed and the current lateral acceleration. Among them, the current vehicle speed of the vehicle during driving can be obtained when obtaining the braking system state, and the current lateral acceleration of the vehicle during driving can be obtained when obtaining the overall vehicle motion state to judge the current driving state of the vehicle.

[0048] S7: According to the current vehicle speed, the current lateral acceleration and the relationship table, control the execution module to drive the stabilizer bar assembly to switch its operating state.

[0049] Specifically, after obtaining the current vehicle speed and the current lateral acceleration, compare them with the data of the two boundary lines in the relationship table. At the current vehicle speed, if the current lateral acceleration exactly matches the lateral acceleration values on the two boundary lines, there is no need to switch the operating state of the stabilizer bar assembly. When the current lateral acceleration is different from the lateral acceleration values on the two boundary lines, the operating state of the stabilizer bar assembly can be switched.

[0050] Therefore, based on the values of the vehicle speed and lateral acceleration and the vehicle state, it is determined whether to switch the operating state of the stabilizer bar assembly, ensuring the safety of the process of switching the stabilizer bar assembly.

[0051] In some embodiments, the control method includes:

[0052] S71: When the current vehicle speed and the current lateral acceleration are at the first critical position in the relationship table, control the execution module to drive the stabilizer bar assembly to switch from the connected state to the disconnected state. That is, after obtaining the values of the current vehicle speed and the current lateral acceleration and comparing the two values with those in the relationship table, when the current vehicle speed and the current lateral acceleration are at the first critical position, the control module can drive the stabilizer bar assembly to switch from the connected state to the disconnected state.

[0053] Among them, two boundary lines are formed in the relationship table. At the same vehicle speed, the boundary line with a smaller lateral acceleration value is the first critical position, that is, Figure 2 the boundary line represented by the dashed line in, when the current lateral acceleration corresponding to the current vehicle speed is greater than or equal to the lateral acceleration value corresponding to the first critical position, as Figure 3 shown in the left block diagram of the logic diagram, the control execution module switches the connection state of the stabilizer bar assembly to the disconnected state. On the contrary, when the current lateral acceleration corresponding to the current vehicle speed is less than the lateral acceleration value corresponding to the first critical position, there is no need to switch the connection state of the stabilizer bar assembly.

[0054] S72: When the current vehicle speed and the current lateral acceleration are at the second critical position in the relationship table, control the execution module to drive the stabilizer bar assembly to switch from the disconnected state to the connected state. That is, after obtaining the values of the current vehicle speed and the current lateral acceleration and comparing the two values with those in the relationship table, when the current vehicle speed and the current lateral acceleration are at the second critical position, the control module can drive the stabilizer bar assembly to switch from the disconnected state to the connected state.

[0055] Among them, at the same vehicle speed, the boundary line with a larger lateral acceleration value is the second critical position, that is, Figure 2 the boundary line represented by the solid line in, when the current lateral acceleration corresponding to the current vehicle speed is greater than or equal to the lateral acceleration value corresponding to the first critical position, as Figure 3The right block diagram of the logic diagram shown. When the control execution module switches the disconnection state of the stabilizer bar assembly to the connection state, conversely, when the current lateral acceleration corresponding to the current vehicle speed is less than the lateral acceleration value corresponding to the second critical position, there is no need to switch the disconnection state of the stabilizer bar assembly.

[0056] In addition, it should be noted that the stabilizer bar assembly includes a first stabilizer bar and a second stabilizer bar. A hydraulic module is provided at the connection between the first stabilizer bar and the second stabilizer bar. The hydraulic module includes a cylinder block and a piston. One of the first stabilizer bar and the second stabilizer bar is connected to the cylinder block and the other is connected to the piston. Through the relative movement between the piston and the cylinder block, the connection or disconnection of the first stabilizer bar and the second stabilizer bar can be realized. At the same time, the first stabilizer bar and the second stabilizer bar are also connected to the suspensions at the left and right ends of the vehicle. When the vehicle is driving on a flat road surface, the state of the stabilizer bar assembly should be the connection state, that is, the first stabilizer bar is connected to the second stabilizer bar, which can make the left and right suspensions of the vehicle relatively stable and improve the turning stability of the vehicle. When the vehicle is driving on a rough road surface, the state of the stabilizer bar assembly should be the disconnection state. When one side tire of the vehicle is driving in a pothole or a bump, both wheels of the vehicle can contact the ground, which can improve the off-road performance of the vehicle. Therefore, according to the different road surface states of the vehicle driving, it is necessary to timely and effectively switch the connection state of the stabilizer bar assembly to improve the driving safety of the vehicle.

[0057] Exemplarily, as Figure 2 shown, when the current vehicle speed is 40 km / h, the lateral acceleration at the first critical position is 3.3 m / s², and the lateral acceleration at the second critical position is 4 m / s². If the current lateral acceleration is less than 4 m / s², then the stabilizer bar assembly is in the disconnection state at this time. When the user accelerates, the lateral acceleration is greater than 4 m / s², and the stabilizer bar assembly switches from the disconnection state to the connection state. And when the user decelerates, and the lateral acceleration is between the first critical position and the second connection position, the stabilizer bar assembly can be switched from the connection state to the disconnection state. If the lateral acceleration is less than the first critical position, then the connection state of the stabilizer bar assembly is not switched.

[0058] Therefore, with the frequent change of the overall vehicle state, by judging according to the fusion method of vehicle speed and lateral acceleration, it is possible to more accurately determine whether the operating state of the stabilizer bar assembly can be switched, making the switching of the stabilizer bar assembly more in line with the driving requirements of the vehicle and improving the safety of the vehicle.

[0059] In some embodiments, obtaining the overall vehicle state includes:

[0060] S2: Obtain the engine state, braking system state, overall vehicle motion state, steering system state, transmission system state, and / or driving environment state.

[0061] Among them, the states of the engine include the to-be-started state, the starting state, and the normal operation state, and one of the engine states can be obtained. The braking system includes the starting state and the closed state, and the start and stop of, for example, the ESP system can be obtained. The overall vehicle motion state includes the body attitude state, and the state of whether the vehicle is running smoothly in the front, rear, left, and right directions can be obtained. The steering system state includes the steering wheel angle signal, and the state of whether the vehicle is turning and the speed of turning can be obtained. The transmission system state includes forward driving and reverse driving of the vehicle, and the forward driving speed, reverse driving speed, and driving speed of the vehicle can be obtained. And the driving environment state includes the surrounding environment of the vehicle body, and whether there are obstacles around the vehicle hindering the vehicle from driving can be obtained.

[0062] In some embodiments, the control method includes:

[0063] S21: When the engine state is the to-be-started state or the starting state, it is determined that the overall vehicle state does not meet the switching condition. S211: And when the engine state is the normal operation state, it is determined that the overall vehicle state meets the switching condition. That is to say, when the obtained engine state is the to-be-started state or the starting state, the switching of the operating state of the stabilizer bar assembly cannot be performed, and when the obtained engine state is the normal operation state, the switching of the operating state of the stabilizer bar assembly can be performed.

[0064] As Figure 4 shown in the logic diagram, when the engine is in the to-be-started or starting state, it indicates that the engine has not started or has just started. At this time, the engine runs unstably, so the overall vehicle state does not meet the switching condition, and the switching of the operating state of the stabilizer bar assembly is not performed. After the engine runs for a period of time and is in the normal operation state, the overall vehicle state meets the switching condition, and the switching of the stabilizer bar assembly can be executed.

[0065] S22: And / or, when the braking system state is the braking state, it is determined that the overall vehicle state does not meet the switching condition. S221: And when the braking system state is the non-braking state, it is determined that the overall vehicle state meets the switching condition. That is to say, when the obtained braking system is in the braking state, the switching of the operating state of the stabilizer bar assembly cannot be performed, and when the obtained braking system is in the non-braking state, the switching of the operating state of the stabilizer bar assembly can be performed.

[0066] Among them, the braking system can detect the state of ESP (Electronic Stability Program, electronic stability program of the vehicle body). ESP is a device that can control the driving wheels and also the driven wheels. ESP includes an anti-lock braking system (ABS) and an anti-skid system (ASR) for vehicle anti-skid, such as Figure 4As shown in the logic diagram, when the ESP system is in the startup state, that is, the vehicle is in an unstable state. At this time, the overall vehicle state does not meet the switching conditions, and the operating state of the stabilizer bar assembly cannot be switched. On the contrary, when the ESP system is in the off state, that is, the braking system is in a non-braking state, the vehicle is in a stable state, and the overall vehicle state meets the switching conditions, the operating state of the stabilizer bar assembly can be switched.

[0067] In some embodiments, S23: When it is determined according to the overall vehicle motion state that the current vehicle speed is greater than or equal to the set vehicle speed, it is determined that the overall vehicle state does not meet the switching conditions. That is to say, when the obtained current vehicle speed is greater than or equal to the set vehicle speed, the operating state of the stabilizer bar assembly cannot be switched.

[0068] S24: When it is determined according to the overall vehicle motion state that the current vehicle speed is less than the set vehicle speed, it is determined that the overall vehicle state meets the switching conditions. That is to say, when the obtained current vehicle speed is less than the set vehicle speed, the operating state of the stabilizer bar assembly can be switched.

[0069] Among them, as Figure 2 and Figure 4 shown, the set vehicle speed can be 80 km / h. When the received current vehicle speed is greater than or equal to 80 km / h, that is, the vehicle is in the high-speed driving stage. This stage does not fall within the range of the operating state switching of the stabilizer bar assembly, that is, it does not meet the switching conditions of the overall vehicle state. The connection or disconnection operation of the stabilizer bar assembly cannot be performed. It is necessary to reduce the vehicle speed and then judge whether the overall vehicle state meets the switching conditions. On the contrary, when the received current vehicle speed is less than 80 km / h, the current vehicle speed meets the switching conditions of the overall vehicle state, and the operating state of the stabilizer bar assembly can be switched.

[0070] In some embodiments, the control method includes:

[0071] S25: When the steering system state is determined to be in the turning state and the current lateral acceleration is greater than or equal to the set acceleration, it is determined that the overall vehicle state does not meet the switching conditions. That is to say, when the obtained steering system is in the turning state and the lateral acceleration is too large, the operating state of the stabilizer bar assembly cannot be switched.

[0072] S26: When the steering system state is determined to be in the turning state and the current lateral acceleration is less than the set acceleration, it is determined that the overall vehicle state meets the switching conditions. That is to say, when the obtained steering system is in the turning state and the lateral acceleration is small, the operating state of the stabilizer bar assembly can be switched.

[0073] Among them, as Figure 2 and Figure 4As shown, according to the two boundary lines in the relationship table, it can be seen that the critical positions corresponding to different vehicle speeds are different, that is, the corresponding set accelerations are different. Compare the current lateral acceleration in the turning state with the set acceleration to determine whether the switching condition is met. When obtaining that the vehicle is in the turning state, identify and analyze the current lateral acceleration value and the set acceleration value in the relationship table. When the current lateral acceleration is greater than or equal to the set acceleration, at this time, the vehicle has a large lateral acceleration and turns too fast, and does not meet the switching condition of the vehicle state. The connection or disconnection operation of the stabilizer bar assembly cannot be performed, and the vehicle state is judged again whether it meets the switching condition after the vehicle runs smoothly. On the contrary, when the current lateral acceleration is less than the set acceleration, the switching condition of the vehicle state is met, and the operating state of the stabilizer bar assembly can be switched. Generally, when the vehicle is in the turning state, the stabilizer bar assembly is in the connected state, which can ensure the smoothness of turning, that is, the operating state of the stabilizer bar assembly can not be switched.

[0074] In some embodiments, the control method includes:

[0075] S27: When the transmission system state is reverse driving or the driving state is abnormal, it is determined that the vehicle state does not meet the switching condition. S271: When the transmission system state is forward driving and the driving state is normal, it is determined that the vehicle state meets the switching condition. That is to say, when the obtained transmission system is reverse driving or the driving is abnormal, the operating state of the stabilizer bar assembly cannot be switched, and when the obtained transmission system is forward driving and the driving state is normal, the operating state of the stabilizer bar assembly can be switched.

[0076] As Figure 4 shown in the logic diagram, specifically, the transmission system can detect the gear information of the vehicle transmission and the vehicle speed to judge the driving state of the vehicle. When receiving that the gear of the vehicle transmission is the forward gear, it indicates that the vehicle is driving forward, and the vehicle speed is normal, that is, the vehicle is in a stable state. At this time, the vehicle state meets the switching condition, and the operating state of the stabilizer bar assembly can be switched. When receiving that the gear of the vehicle transmission is the reverse gear, it indicates that the vehicle is in the reverse state, and when the vehicle speed is large or the driving state is abnormal, that is, the vehicle is in an unstable state. At this time, the vehicle state does not meet the switching condition, and the operating state of the stabilizer bar assembly cannot be switched.

[0077] S28: And / or, when there is a driving obstacle in the driving environment state, it is determined that the vehicle state does not meet the switching condition. S281: When the driving environment state is normal and feasible, it is determined that the vehicle state meets the switching condition. That is to say, by judging whether the driving environment of the vehicle is normal and feasible, it is determined whether to switch the operating state of the stabilizer bar assembly.

[0078] As Figure 4The logic diagram shown. Specifically, during the driving process of the vehicle, there may be driving obstacles on the road surface or in the surrounding environment, which may pose driving safety problems and may result in operations such as emergency braking. When it is detected that there are driving obstacles in the driving environment, the overall vehicle state does not meet the switching conditions, and the operating state of the stabilizer bar assembly cannot be switched. On the contrary, when it is detected that the driving environment is normal without driving obstacles, it indicates that the vehicle is running smoothly and safely. At this time, the overall vehicle state meets the switching conditions, and the operating state of the stabilizer bar assembly can be switched.

[0079] Therefore, in this embodiment, by collecting data on the current operating states of the engine state, braking system state, overall vehicle motion state, steering system state, and transmission system state, when all of these five are in normal operating states and combined with a safe driving environment state, the operating state of the stabilizer bar assembly can be switched. The entire process is automatically controlled to ensure the safety and reliability of the switching process.

[0080] The present invention also proposes a control system for a stabilizer bar assembly.

[0081] The control system for a stabilizer bar assembly according to an embodiment of the present invention is applicable to the control method of the stabilizer bar assembly in any of the above embodiments, and the control system includes: an acquisition module and a control module.

[0082] Among them, as Figure 6 shown, the acquisition module is used to acquire the switch state of the execution module, acquire the overall vehicle state, and acquire the functional state of the stabilizer bar assembly. That is to say, through the acquisition module, the switch state of the execution module, the overall vehicle state, and the functional state of the stabilizer bar assembly are sequentially acquired to timely understand the operating condition of the vehicle. Among them, the acquisition module is used to collect information such as the overall vehicle state, the execution module, and the stabilizer bar function of the vehicle, and timely acquire the current operating information of the vehicle during driving. Among them, the current state of the stabilizer bar assembly can be displayed through an indicator light or animation. After acquiring the switch state of the execution module, the overall vehicle state, and the functional state of the stabilizer bar assembly itself, these information are then sent to the control module.

[0083] The control module is used to determine the switch state, the overall vehicle state, and the functional state, and is used to control the execution module to control the stabilizer bar assembly to switch the operating state. That is to say, the control module identifies and analyzes various information about the vehicle collected by the acquisition module, and then sends an execution signal to the execution module to control the stabilizer bar assembly to switch the operating state.

[0084] Specifically, when the control module detects that the execution module is in the on state, the vehicle state is in a safe state, and the function of the stabilizer bar assembly is normal, it sends an execution signal to the execution module. The execution module controls the stabilizer bar assembly to switch its current operating state. On the contrary, when either the vehicle state or the function of the stabilizer bar assembly is in an abnormal state, the execution module is controlled not to switch the current operating state of the stabilizer bar assembly. Moreover, the execution module feeds back the operating state of the stabilizer bar assembly to provide feedback on the execution state of the execution module to the control module.

[0085] Thus, from obtaining information to automatically identifying and analyzing information and controlling the operation of the execution module, the automatic opening and closing of the function of the stabilizer bar assembly are realized. This control system can automatically judge and execute the disconnection and connection of the stabilizer bar under complex and changeable road conditions, improving the functional convenience, giving full play to the driving passability and comfort of the whole vehicle, and enhancing the intelligent experience of the whole vehicle. Moreover, it can be switched under switchable conditions and when the user intends to switch the operating state of the stabilizer bar assembly, and at the same time, it is automatically switched as the vehicle operating state changes to ensure driving safety.

[0086] The present invention also provides a vehicle.

[0087] The vehicle according to the embodiment of the present invention is provided with the control system of the stabilizer bar assembly in the above embodiment. By using this control method in the control system of the stabilizer bar assembly, the operating state of the stabilizer bar assembly can be automatically identified and switched while ensuring the safety of the whole vehicle, reducing the manual operation of the driver, and the automatic control method is more timely and effective, thereby ensuring the driving stability and safety of the vehicle.

[0088] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control method for a stabilizer bar assembly, characterized in that, The stabilizer bar assembly is adapted to switch the operating state through an execution module, and the control method includes: Obtain the switch state of the execution module; When the switch state is in the open state, obtain the vehicle state; When the vehicle state meets the switching condition, obtain the functional state of the stabilizer bar assembly; When the functional state is normal, control the execution module to drive the stabilizer bar assembly to switch the operating state.

2. The control method of the stabilizer bar assembly according to claim 1, characterized in that, The control method includes: Obtain the pre-calibrated relationship table of vehicle speed and lateral acceleration; Obtain the current vehicle speed and the current lateral acceleration; According to the current vehicle speed, the current lateral acceleration and the relationship table, control the execution module to drive the stabilizer bar assembly to switch the operating state.

3. The control method of the stabilizer bar assembly according to claim 2, characterized in that, The control method includes: When the current vehicle speed and the current lateral acceleration are at the first critical position in the relationship table, control the execution module to drive the stabilizer bar assembly to switch from the connected state to the disconnected state; When the current vehicle speed and the current lateral acceleration are at the second critical position in the relationship table, control the execution module to drive the stabilizer bar assembly to switch from the disconnected state to the connected state.

4. The control method of the stabilizer bar assembly according to claim 1, characterized in that, The obtaining of the vehicle state includes: Obtain the engine state, the braking system state, the vehicle motion state, the steering system state, the transmission system state, and / or the driving environment state.

5. The control method of the stabilizer bar assembly according to claim 4, wherein, The control method includes: When the engine state is in the to-be-started state or the starting state, determine that the vehicle state does not meet the switching condition, and when the engine state is in the normal operating state, determine that the vehicle state meets the switching condition; And / or, when the braking system state is in the braking state, determine that the vehicle state does not meet the switching condition, and when the braking system state is in the non-braking state, determine that the vehicle state meets the switching condition.

6. The control method of the stabilizer bar assembly according to claim 4, characterized in that, When it is determined according to the vehicle motion state that the current vehicle speed is greater than or equal to the set vehicle speed, determine that the vehicle state does not meet the switching condition; When it is determined according to the vehicle motion state that the current vehicle speed is less than the set vehicle speed, determine that the vehicle state meets the switching condition.

7. The control method of the stabilizer bar assembly according to claim 4, characterized in that, The control method includes: When it is determined in the steering system state that it is in the turning state and the current lateral acceleration is greater than or equal to the set acceleration, determine that the vehicle state does not meet the switching condition; When it is determined in the steering system state that it is in the turning state and the current lateral acceleration is less than the set acceleration, determine that the vehicle state meets the switching condition.

8. The control method of the stabilizer bar assembly according to claim 4, characterized in that, The control method includes: When the transmission system state is in reverse driving or abnormal driving state, determine that the vehicle state does not meet the switching condition, and when the transmission system state is in forward driving and the driving state is normal, determine that the vehicle state meets the switching condition; And / or, when there is a driving obstacle in the driving environment state, determine that the vehicle state does not meet the switching condition, and when the driving environment state is normal and feasible, determine that the vehicle state meets the switching condition.

9. A control system for a stabilizer bar assembly, characterized in that, Applicable to the control method of the stabilizer bar assembly according to any one of claims 1-8, and the control system includes: An acquisition module, which is used to acquire the switch state of the execution module, acquire the vehicle state, and acquire the functional state of the stabilizer bar assembly; A control module, which is used to determine the switch state, the vehicle state and the function state, and is used to control the execution module to control the stabilizer bar assembly to switch the operating state.

10. A vehicle, characterized in that, A control system of the stabilizer bar assembly according to claim 9 is provided.

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