A control method, device and system for vehicle air springs

Abstract

The present invention relates to a vehicle air spring control method, device, and system. The method comprises: determining the vehicle's current driving state based on vehicle state parameters; determining control information for the vehicle's air spring based on the vehicle's driving mode and the current driving state, if the current driving state satisfies a first preset condition; and adjusting the height of an air spring installed on a front or rear axle of the vehicle's air suspension system based on the control information. The present invention achieves the goal of automatically adjusting the air spring in multiple scenarios, thereby adjusting and compensating for the vehicle's center of gravity, optimizing vehicle driving performance, and enhancing the driver's driving confidence.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically to a control method, device, and system for vehicle air springs. Background Technology

[0002] The vehicle's center of gravity is one of the most important basic parameters of a vehicle. It has a significant impact on the vehicle's dynamic performance and can even affect the vehicle's driving safety.

[0003] When a vehicle is stationary, its center of gravity remains stable. However, when a vehicle is in motion, its center of gravity shifts with the movement, significantly affecting its direction of motion. Therefore, a proper center of gravity at the right time and under the right conditions helps the vehicle maintain correct dynamics, while an improper center of gravity hinders it.

[0004] Therefore, how to adjust the vehicle's center of gravity so that the vehicle can move with the correct body dynamics has become an urgent problem to be solved. Summary of the Invention

[0005] One objective of this invention is to provide a control method for vehicle air springs to solve the problem of adjusting the vehicle's center of gravity; another objective is to provide a control device for vehicle air springs; and a third objective is to provide a control system for vehicle air springs.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A method for controlling a vehicle air spring includes: determining the current driving state of the vehicle based on the vehicle's state parameters;

[0008] When the current driving state meets the first preset condition, control information for the air springs of the vehicle is determined based on the vehicle's driving mode and the current driving state; based on the control information, the height of the air springs installed on the front or rear axle of the vehicle's air suspension system is adjusted.

[0009] Based on the above technical means, during vehicle operation, when the vehicle's driving state meets the first preset condition, the adjustment method of the vehicle's air springs is further determined in combination with the vehicle's drive mode. That is, the purpose of automatically adjusting the air springs in multiple scenarios is achieved, thereby completing the adjustment and compensation of the vehicle's center of gravity, and achieving the effect of optimizing vehicle driving performance and improving driver confidence.

[0010] Furthermore, the first preset condition is that the current driving state is an uphill state or a downhill state, and the slope corresponding to the current driving state is greater than the corresponding slope threshold, and the duration corresponding to the current driving state is greater than the first time threshold.

[0011] The determination of control information for the air springs of the vehicle based on the vehicle's drive mode and current driving state includes:

[0012] Based on the slope corresponding to the current driving state, control information for the air springs of the vehicle is determined.

[0013] Based on the aforementioned technical means, it was clarified that in scenarios where the vehicle is on an uphill or downhill slope, the control information for the air springs is determined based on the slope.

[0014] Furthermore, the current driving state is an uphill state;

[0015] The determination of control information for the air springs of the vehicle based on the driving mode of the vehicle and the slope corresponding to the current driving state includes one of the following:

[0016] When the vehicle is driven by a front-wheel drive system, based on the slope corresponding to the uphill state, it is determined that the air spring installed on the rear axle of the air suspension system of the vehicle will be raised to a first height.

[0017] When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the uphill state, it is determined that the air springs on the front axle of the air suspension system installed in the vehicle will be raised to a second height.

[0018] Based on the aforementioned technical means, by further distinguishing the vehicle's drive mode in uphill conditions, the control mode of the vehicle's air springs can be determined more accurately, thereby better achieving the adjustment and compensation of the vehicle's center of gravity, optimizing the vehicle's driving performance during uphill driving, and thus improving the driver's driving confidence during uphill driving.

[0019] Furthermore, the current driving state is a downhill state;

[0020] The determination of control information for the air springs of the vehicle based on the driving mode of the vehicle and the slope corresponding to the current driving state includes one of the following:

[0021] When the vehicle is driven by a front-wheel drive system, based on the slope corresponding to the downhill state, it is determined that the air springs on the front axle of the air suspension system installed in the vehicle will be raised to a third height.

[0022] When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the downhill state, it is determined that the air springs installed on the rear axle of the vehicle's air suspension system will be raised to a fourth height.

[0023] Based on the aforementioned technical means, by further distinguishing the vehicle's drive mode in downhill conditions, the control mode of the vehicle's air springs can be determined more accurately, thereby better achieving the adjustment and compensation of the vehicle's center of gravity, optimizing the vehicle's driving performance during downhill driving, and thus improving the driver's driving confidence during downhill driving.

[0024] Furthermore, the first preset condition is that the current driving state is a rapid acceleration state or a rapid deceleration state, and the absolute value of the acceleration corresponding to the current driving state is greater than the corresponding acceleration threshold, and the duration corresponding to the current driving state is greater than the second time threshold.

[0025] The determination of control information for the air springs of the vehicle based on the vehicle's drive mode and current driving state includes:

[0026] Based on the vehicle's driving mode and the acceleration corresponding to the current driving state, control information for the vehicle's air springs is determined.

[0027] Based on the aforementioned technical means, it is clarified that in scenarios where the vehicle is in a state of rapid acceleration or rapid deceleration, the control information for the air spring is determined based on the acceleration.

[0028] Furthermore, the current driving state is a state of rapid deceleration;

[0029] The determination of control information for the air springs of the vehicle based on the vehicle's driving mode and the acceleration corresponding to the current driving state includes one of the following:

[0030] When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid deceleration state, it is determined that the air spring installed on the rear axle of the vehicle's air suspension system will be raised to a fifth height.

[0031] When the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid deceleration state, it is determined that the air springs on the front axle of the vehicle's air suspension system will be raised to a sixth height.

[0032] Based on the aforementioned technical means, by further distinguishing the vehicle's drive mode under rapid deceleration, the control mode of the vehicle's air springs can be determined more accurately, thereby better realizing the adjustment and compensation of the vehicle's center of gravity, optimizing the vehicle's driving performance during rapid deceleration, and thus improving the driver's driving confidence under rapid deceleration.

[0033] Furthermore, the current driving state is a rapid acceleration state;

[0034] The determination of control information for the air springs of the vehicle based on the vehicle's driving mode and the acceleration corresponding to the current driving state includes one of the following:

[0035] When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid acceleration state, it is determined that the air springs installed on the front axle of the vehicle's air suspension system will be raised to the seventh height.

[0036] When the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid acceleration state, it is determined that the air spring installed on the rear axle of the vehicle's air suspension system will be raised to the eighth height.

[0037] Based on the aforementioned technical means, by further distinguishing the vehicle's drive mode under rapid acceleration, the control mode of the vehicle's air springs can be determined more accurately, thereby better achieving the adjustment and compensation of the vehicle's center of gravity, optimizing the vehicle's driving performance during rapid acceleration, and thus improving the driver's driving confidence under rapid acceleration.

[0038] Furthermore, after adjusting the height of the air springs on the front or rear axle of the vehicle's air suspension system based on the control information, the method further includes:

[0039] Obtain the updated status parameters of the vehicle;

[0040] If the updated state parameters meet the second preset condition, the updated control information for the air springs of the vehicle is determined.

[0041] Based on the updated control information, the height of the front or rear axle air springs of the air suspension system installed in the vehicle is restored to their initial height.

[0042] Based on the above technical means, by detecting the vehicle's status parameters in real time, and when the updated status parameters meet the second preset condition, the air spring is restored to its initial height, thereby realizing the adjustment of the vehicle's control logic in combination with the vehicle's real-time status parameters, thereby reducing the computational resource requirements of the vehicle control unit and reducing the mechanical wear of the vehicle.

[0043] A control device for a vehicle air spring, comprising:

[0044] The first determining module is used to determine the current driving state of the vehicle based on the vehicle's state parameters;

[0045] The second determining module is used to determine control information for the air springs of the vehicle based on the vehicle's driving mode and the current driving state, when the current driving state meets the first preset condition.

[0046] An adjustment module is used to adjust the height of the air springs on the front or rear axle of the air suspension system installed in the vehicle, based on the control information.

[0047] A control system for a vehicle air spring includes multiple sensors, a first controller, and a second controller; wherein,

[0048] The multiple sensors are used to collect the vehicle's status parameters;

[0049] The first controller is communicatively connected to the plurality of sensors to receive the status parameters; based on the status parameters, it determines the current driving state of the vehicle; and when the current driving state meets a first preset condition, it determines control information for the air springs of the vehicle based on the driving mode of the vehicle and the current driving state.

[0050] The second controller receives the control information from the first controller to adjust the height of the air springs on the front or rear axle of the air suspension system installed in the vehicle based on the control information.

[0051] The beneficial effects of this invention are:

[0052] During vehicle operation, if the vehicle's driving status meets the first preset conditions, the adjustment method for the vehicle's air springs is further determined based on the vehicle's drive mode. This achieves the goal of automatically adjusting the air springs in multiple scenarios, thereby completing the adjustment and compensation of the vehicle's center of gravity, optimizing vehicle driving performance and improving driver confidence. Attached Figure Description

[0053] Figure 1 A schematic diagram illustrating the implementation process of a vehicle air spring control method provided by the present invention;

[0054] Figure 2 A schematic diagram of the composition structure of a vehicle air spring control device provided by the present invention;

[0055] Figure 3 A system block diagram of a vehicle air spring control system provided by the present invention;

[0056] Figure 4 This is a schematic diagram illustrating the implementation process of an embodiment of the vehicle air spring control system provided by the present invention;

[0057] Figure 5A schematic diagram illustrating the implementation process of an embodiment of the first controller exiting the adaptive adjustment function in the vehicle air spring control system provided by the present invention;

[0058] Figure 6 The control logic diagram for the first controller to implement adaptive adjustment function in the vehicle air spring control system provided by the present invention is shown. Detailed Implementation

[0059] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0060] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0061] This invention proposes a control method for vehicle air springs, which can be implemented by a controller installed in the vehicle, such as an electronic control unit (ECU), a vehicle motion control unit (VMC), etc. Figure 1 A schematic diagram illustrating the implementation process of a vehicle air spring control method provided by the present invention is shown below. Figure 1 As shown, the method includes the following steps S101 to S103:

[0062] Step S101: Determine the current driving state of the vehicle based on the vehicle's state parameters.

[0063] Here, vehicle status parameters refer to data related to vehicle operation collected during vehicle operation.

[0064] In some embodiments, the vehicle's state parameters may include engine torque data, gear data, accelerator pedal position data, brake pedal position data, wheel speed data, lateral acceleration data, longitudinal acceleration data, and so on.

[0065] In some embodiments, the vehicle is equipped with a torque sensor to obtain the actual torque data of the vehicle engine.

[0066] In some embodiments, the vehicle is equipped with a power controller to obtain the vehicle's gear position data.

[0067] In some embodiments, the vehicle is equipped with a potentiometer-type sensor or a Hall effect sensor to acquire accelerator pedal position data.

[0068] In some embodiments, the vehicle is equipped with a brake pedal position sensor to acquire brake pedal position data of the vehicle.

[0069] In some embodiments, the vehicle is equipped with a left front wheel speed sensor, a right front wheel speed sensor, a left rear wheel speed sensor, and a right rear wheel speed sensor to obtain wheel speed data for the corresponding wheels. At the same time, lateral acceleration data and longitudinal acceleration data can be calculated from the wheel speed data obtained by the four wheel speed sensors.

[0070] In some embodiments, the vehicle is equipped with inertial sensors to acquire vehicle acceleration data, tilt angle data, and rotational state data.

[0071] In some embodiments, the vehicle is equipped with an ignition (IGN) signal acquisition unit to acquire the vehicle's ignition signal.

[0072] In this way, various sensor data are acquired during the vehicle's driving process through various sensors installed on the vehicle, and the current driving state of the vehicle is determined based on the various sensor data, that is, the current driving state of the vehicle is determined based on multimodal data related to the vehicle.

[0073] In some embodiments, multimodal data related to the vehicle can be input into the recognition model to determine the vehicle's current driving state. For example, engine torque data, gear data, accelerator pedal position data, brake pedal position data, wheel speed data, lateral acceleration data, and longitudinal acceleration data can be input into the recognition model to determine whether the vehicle is currently going uphill or downhill; or, for example, accelerator pedal position data, brake pedal position data, wheel speed data, and longitudinal acceleration data can be input into the recognition model to determine whether the vehicle is currently in a state of rapid acceleration or rapid deceleration.

[0074] Step S102: If the current driving state meets the first preset condition, determine the control information for the air springs of the vehicle based on the driving mode of the vehicle and the current driving state.

[0075] Here, the first preset condition refers to the vehicle's driving conditions under which the air springs need to be adjusted.

[0076] In some embodiments, when the current driving state meets a first preset condition, the vehicle's adaptive adjustment function is activated to determine control information for the vehicle's air springs based on the vehicle's driving mode and the current driving state.

[0077] In daily vehicle use, acceleration, braking, steering, climbing hills, and descending hills are common driving behaviors that change the vehicle's center of gravity. Therefore, in some embodiments, the current driving state meets a first preset condition, which includes at least one of the following: the vehicle's current driving state is a rapid acceleration state, a rapid deceleration state, an uphill state, and a downhill state.

[0078] The drive system of a vehicle refers to the location of the engine and the drive wheels. Here, the drive system includes front-wheel drive and rear-wheel drive.

[0079] Since the vehicle's driving mode is related to the vehicle's equivalent gradient and driving efficiency, and the vehicle's equivalent gradient and driving efficiency are related to the vehicle's uphill and downhill capabilities, as well as its rapid acceleration and deceleration capabilities, the control information for the vehicle's air springs is determined based on the vehicle's driving mode and current driving state. That is, the adjustment information for the front axle height or rear axle height of the air springs is determined.

[0080] Step S103: Based on the control information, adjust the height of the air springs on the front or rear axle of the air suspension system installed in the vehicle.

[0081] An air spring is a type of spring that utilizes the elasticity of air. It achieves its elastic effect by filling a retractable, sealed container with compressed air. When applied to vehicle systems, air springs can be installed on the front and rear axles of a vehicle's air suspension system to alter the vehicle's height and suspension stiffness, thereby better adapting to different road conditions and driving styles.

[0082] Thus, when the air springs mounted on the front axle of the air suspension system are adjusted (e.g., raised or lowered) according to the control information, the height of the front end of the vehicle body is raised or lowered; when the air springs mounted on the rear axle of the air suspension system are adjusted (e.g., raised or lowered) according to the control information, the height of the rear end of the vehicle body is raised or lowered.

[0083] The vehicle air spring control method provided by this invention first determines the vehicle's current driving state based on the vehicle's state parameters. Then, if the current driving state meets a first preset condition, control information for the vehicle's air springs is determined based on the vehicle's drive mode and the current driving state. Finally, based on the control information, the height of the air springs installed on the front or rear axle of the vehicle's air suspension system is adjusted. Thus, during vehicle operation, if the vehicle's driving state meets the first preset condition, the adjustment method for the vehicle's air springs is further determined in conjunction with the vehicle's drive mode. This achieves the goal of automatically adjusting the air springs in multiple scenarios, thereby completing the adjustment and compensation of the vehicle's center of gravity, optimizing vehicle driving performance and improving driver confidence.

[0084] In some embodiments, the first preset condition is that the current driving state is an uphill state or a downhill state, and the slope corresponding to the current driving state is greater than the corresponding slope threshold, and the duration corresponding to the current driving state is greater than a first time threshold.

[0085] Since going uphill and downhill are common driving behaviors that change the vehicle's center of gravity, it is necessary to consider adjusting and compensating for the vehicle's center of gravity when the current driving state is uphill or downhill.

[0086] Meanwhile, considering uphill and downhill conditions, if the slope is small, for example, less than 10°, then the slope has little impact on the vehicle's center of gravity, and no adjustment to the vehicle's center of gravity is required. Therefore, the first preset condition also includes that the slope corresponding to the current driving state is greater than the corresponding slope threshold. For example, the uphill slope is greater than the first slope threshold, and the downhill slope is greater than the second slope threshold; wherein, the first slope threshold and the second slope threshold can be the same or different, and are independent of each other.

[0087] Furthermore, when the uphill or downhill state is short-lived, for example, less than 10 seconds, the impact of the uphill or downhill state on the vehicle's center of gravity is short-lived, and no adjustment to the vehicle's center of gravity is required. Therefore, the first preset condition also includes that the duration corresponding to the current driving state is greater than a first time threshold. For example, the duration of the uphill state is greater than a first uphill time threshold, and the duration of the downhill state is greater than a first downhill time threshold; wherein, the first uphill time threshold and the first downhill time threshold can be the same or different, and are independent of each other.

[0088] Thus, the step S102 above, which involves determining the control information for the air springs of the vehicle based on the vehicle's driving mode and current driving state, can be implemented as the following step S1021:

[0089] Step S1021: Based on the driving mode of the vehicle and the slope corresponding to the current driving state, determine the control information for the air springs of the vehicle.

[0090] Here, based on the slope corresponding to the uphill or downhill state, control information for the air springs is determined. That is, height adjustment information for the air springs installed on the front axle of the air suspension system or height adjustment information for the air springs installed on the rear axle of the air suspension system is determined. For example, when going uphill or downhill, by adjusting the height of the air springs, the vehicle body can be raised, increasing the vehicle's equivalent slope, thereby improving the vehicle's uphill or downhill capability.

[0091] In addition, vehicles with different drive systems have different methods for calculating the maximum equivalent gradient.

[0092] For a front-wheel drive vehicle, its maximum equivalent slope q1 can be calculated using the following formula (1):

[0093]

[0094] Where b represents the distance from the vehicle's center of gravity to the rear axle of the vehicle's air suspension system; h represents the road surface adhesion coefficient. g The value indicates the vehicle's center of gravity height; L indicates the wheelbase of the vehicle's air suspension system.

[0095] For a vehicle with a rear-wheel drive system, its maximum equivalent slope q2 can be calculated using the following formula (2):

[0096]

[0097] Where 'a' represents the distance from the vehicle's center of gravity to the front axle of the vehicle's air suspension system; h represents the road surface adhesion coefficient. g The value indicates the vehicle's center of gravity height; L indicates the wheelbase of the vehicle's air suspension system.

[0098] As can be seen from the above formulas (1) and (2), when a front-wheel drive vehicle is on an uphill slope, in order to increase the maximum equivalent slope, the rear axle of the air suspension system needs to be raised so that the vehicle's center of gravity moves towards the front axle; while when a rear-wheel drive vehicle is on an uphill slope, in order to increase the maximum equivalent slope, the front axle of the air suspension system needs to be raised so that the vehicle's center of gravity moves towards the rear axle.

[0099] Therefore, in some embodiments, when the current driving state is uphill, determining the control information for the air springs of the vehicle based on the vehicle's driving mode and the slope corresponding to the current driving state, i.e., step S1021 above, can be implemented as one of the following steps S1022 to S1023:

[0100] Step S1022: When the vehicle is driven by a front-wheel drive system, based on the slope corresponding to the uphill state, determine to raise the air spring on the rear axle of the air suspension system of the vehicle to a first height.

[0101] Step S1023: When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the uphill state, determine to raise the air spring on the front axle of the vehicle's air suspension system to a second height.

[0102] Here, the first height and the second height are the heights determined for front-wheel drive vehicles and rear-wheel drive vehicles, respectively, based on the slope of the uphill condition.

[0103] In some embodiments, the first and second heights corresponding to different slopes can be determined separately by calibration.

[0104] In some embodiments, the first height and the second height corresponding to the front-wheel drive vehicle and the rear-wheel drive vehicle can be determined based on the slope corresponding to the uphill state and the vehicle load, respectively.

[0105] In some embodiments, the first height and the second height corresponding to the front-wheel drive vehicle and the rear-wheel drive vehicle can be determined based on the slope corresponding to the uphill state, the vehicle load, and the adhesion coefficient of the vehicle tires, respectively.

[0106] In the above embodiments, for front-wheel-drive vehicles going uphill, the air springs on the rear axle of the air suspension system are raised; for rear-wheel-drive vehicles going uphill, the air springs on the front axle of the air suspension system are raised. This further differentiates the vehicle's drive mode during uphill driving, allowing for a more accurate determination of the air spring control method. This leads to better adjustment and compensation of the vehicle's center of gravity, optimizing driving performance during uphill driving and ultimately increasing driver confidence.

[0107] Meanwhile, based on the above formulas (1) and (2), it can be seen that, in the opposite direction of the movement of the vehicle's center of gravity during the uphill process, when a front-wheel drive vehicle is in a downhill state, in order to increase the maximum equivalent gradient, it is necessary to raise the front axle of the air suspension system so that the vehicle's center of gravity moves towards the rear axle; while when a rear-wheel drive vehicle is in a downhill state, in order to increase the maximum equivalent gradient, it is necessary to raise the rear axle of the air suspension system so that the vehicle's center of gravity moves towards the front axle.

[0108] Therefore, in some embodiments, when the current driving state is a downhill state, determining the control information for the air springs of the vehicle based on the vehicle's driving mode and the slope corresponding to the current driving state, i.e., the above step S1021, can be implemented as one of the following steps S1024 to S1025:

[0109] Step S1024: When the vehicle is driven by a front-wheel drive system, based on the slope corresponding to the downhill state, determine to raise the air spring on the front axle of the air suspension system of the vehicle to a third height.

[0110] Step S1025: When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the downhill state, determine to raise the air spring on the rear axle of the air suspension system installed in the vehicle to a fourth height.

[0111] Here, the third and fourth heights are the heights determined based on the slope in the downhill state, specifically for front-wheel drive vehicles and rear-wheel drive vehicles, respectively.

[0112] In some embodiments, the third and fourth elevations corresponding to different slopes can be determined separately through calibration.

[0113] In some embodiments, the third and fourth heights corresponding to the front-wheel drive vehicle and the rear-wheel drive vehicle can be determined based on the slope corresponding to the downhill state and the vehicle load, respectively.

[0114] In some embodiments, the third and fourth heights corresponding to front-wheel drive vehicles and rear-wheel drive vehicles can be determined based on the slope corresponding to the downhill state, the vehicle load, and the adhesion coefficient of the vehicle tires, respectively.

[0115] In the above embodiments, for front-wheel-drive vehicles going downhill, the air springs on the front axle of the air suspension system are raised; for rear-wheel-drive vehicles going downhill, the air springs on the rear axle of the air suspension system are raised. This further differentiates the vehicle's drive mode during downhill driving, allowing for a more accurate determination of the air spring control method. This leads to better adjustment and compensation of the vehicle's center of gravity, optimizing driving performance during downhill driving and ultimately increasing driver confidence.

[0116] In some embodiments, the first preset condition is that the current driving state is a rapid acceleration state or a rapid deceleration state, and the absolute value of the acceleration corresponding to the current driving state is greater than the corresponding acceleration threshold, and the duration corresponding to the current driving state is greater than the second time threshold.

[0117] Since rapid acceleration and deceleration are common driving behaviors that change the vehicle's center of gravity, it is necessary to consider adjusting and compensating for the vehicle's center of gravity when the current driving state is in a state of rapid acceleration or deceleration.

[0118] Meanwhile, considering that during rapid acceleration or deceleration, if the absolute value of the acceleration is small, the impact of this rapid acceleration or deceleration on the vehicle's center of gravity is minimal, and no adjustment to the vehicle's center of gravity is required. Therefore, the first preset condition also includes that the absolute value of the acceleration corresponding to the current driving state is greater than the corresponding slope threshold. For example, the absolute value of the acceleration during rapid acceleration is greater than a first acceleration threshold, and the absolute value of the acceleration during rapid deceleration is greater than a second acceleration threshold; wherein the absolute values ​​of the first acceleration threshold and the second acceleration threshold can be the same or different, and are independent of each other.

[0119] Furthermore, when the duration of a rapid acceleration or deceleration is short, for example, less than 10 seconds, the impact of the rapid acceleration or deceleration on the vehicle's center of gravity is short-lived, and no adjustment to the vehicle's center of gravity is required. Therefore, the first preset condition also includes that the duration corresponding to the current driving state is greater than the second time threshold. For example, the duration of the rapid acceleration state is greater than the second rapid acceleration time threshold, and the duration of the rapid deceleration state is greater than the second rapid deceleration time threshold; wherein, the second rapid acceleration time threshold and the second rapid deceleration time threshold can be the same or different, and are independent of each other.

[0120] Thus, the step S102 above, which involves determining the control information for the air springs of the vehicle based on the vehicle's driving mode and current driving state, can be implemented as the following step S1026:

[0121] Step S1026: Based on the vehicle's driving mode and the acceleration corresponding to the current driving state, determine control information for the vehicle.

[0122] Here, control information for the air springs is determined based on the absolute value of the acceleration corresponding to a rapid acceleration or deceleration state. Specifically, this includes height adjustment information for the air springs mounted on the front axle of the air suspension system, or height adjustment information for the air springs mounted on the rear axle of the air suspension system. For example, during rapid acceleration or deceleration, adjusting the height of the air springs can adjust the vehicle's braking efficiency.

[0123] In addition, vehicles with different drive systems have different methods for calculating braking efficiency.

[0124] For front-wheel drive vehicles, their braking efficiency E r1 It can be calculated using the following formula (3):

[0125]

[0126] Where b represents the distance from the vehicle's center of gravity to the rear axle of the vehicle's air suspension system; h represents the road surface adhesion coefficient. g The value represents the vehicle's center of gravity height; L represents the wheelbase of the vehicle's air suspension system; β represents the brake force distribution coefficient.

[0127] For rear-wheel drive vehicles, their braking efficiency E r2 It can be calculated using the following formula (4):

[0128]

[0129] Where 'a' represents the distance from the vehicle's center of gravity to the front axle of the vehicle's air suspension system; h represents the road surface adhesion coefficient. g The value represents the vehicle's center of gravity height; L represents the wheelbase of the vehicle's air suspension system; β represents the brake force distribution coefficient.

[0130] As can be seen from the above formulas (3) and (4), when a front-wheel drive vehicle is in a state of rapid deceleration, in order to improve the braking efficiency of the vehicle, it is necessary to raise the rear axle of the air suspension system so that the center of gravity of the vehicle moves to the front axle; while when a rear-wheel drive vehicle is in a state of rapid deceleration, in order to improve the braking efficiency of the vehicle, it is necessary to raise the front axle of the air suspension system so that the center of gravity of the vehicle moves to the rear axle.

[0131] Therefore, in some embodiments, if the current driving state is a rapid deceleration state;

[0132] The step of determining control information for the air springs of the vehicle based on the vehicle's driving mode and the acceleration corresponding to the current driving state, i.e., step S1026 above, can be implemented as one of the following steps S1027 to S1028:

[0133] Step S1027: When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid deceleration state, determine to raise the air spring on the rear axle of the air suspension system of the vehicle to the fifth height.

[0134] Step S1028: When the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid acceleration state, determine to raise the air spring on the front axle of the vehicle's air suspension system to a sixth height.

[0135] Here, the fifth and sixth heights are the heights determined for front-wheel drive and rear-wheel drive vehicles, respectively, based on the acceleration during rapid deceleration.

[0136] In some embodiments, the fifth and sixth heights corresponding to different accelerations can be determined separately through calibration.

[0137] In some embodiments, the fifth and sixth heights corresponding to front-wheel drive vehicles and rear-wheel drive vehicles can be determined based on information such as the acceleration corresponding to the rapid deceleration state, the vehicle load, and the adhesion coefficient of the vehicle tires.

[0138] In the above embodiments, for front-wheel-drive vehicles undergoing rapid deceleration, the air springs mounted on the rear axle of the air suspension system are raised to shift the vehicle's center of gravity forward, thereby improving braking efficiency. For rear-wheel-drive vehicles undergoing rapid deceleration, the air springs mounted on the front axle of the air suspension system are raised to shift the vehicle's center of gravity rearward, thereby improving braking efficiency. By further differentiating the vehicle's drive mode during rapid deceleration, the control method for the air springs can be more accurately determined, leading to better adjustment and compensation of the vehicle's center of gravity, optimized driving performance during rapid deceleration, and ultimately increased driver confidence during rapid deceleration.

[0139] Meanwhile, based on the above formulas (3) and (4), it can be seen that, opposite to the direction of the vehicle's center of gravity movement during rapid deceleration, when a front-wheel drive vehicle is in a state of rapid acceleration, in order to reduce braking efficiency, it is necessary to raise the front axle of the air suspension system so that the vehicle's center of gravity moves towards the rear axle; while when a rear-wheel drive vehicle is in a state of rapid acceleration, in order to reduce braking efficiency, it is necessary to raise the rear axle of the air suspension system so that the vehicle's center of gravity moves towards the front axle.

[0140] Therefore, in some embodiments, if the current driving state is a rapid acceleration state;

[0141] The step of determining control information for the air springs of the vehicle based on the vehicle's driving mode and the acceleration corresponding to the current driving state, i.e., step S1026 above, can be implemented as at least one of the following steps S1029 to S10210:

[0142] Step S1029: When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid acceleration state, determine to raise the air spring on the front axle of the vehicle's air suspension system to the seventh height.

[0143] In step S10210, when the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid acceleration state, it is determined that the air spring installed on the rear axle of the vehicle's air suspension system will be raised to an eighth height.

[0144] Here, the seventh and eighth heights are the heights determined for front-wheel drive vehicles and rear-wheel drive vehicles, respectively, based on acceleration during rapid acceleration.

[0145] In some embodiments, the seventh and eighth heights corresponding to different accelerations can be determined separately through calibration.

[0146] In some embodiments, the seventh and eighth heights corresponding to front-wheel drive vehicles and rear-wheel drive vehicles can be determined based on information such as the acceleration corresponding to the rapid acceleration state, the vehicle load, and the adhesion coefficient of the vehicle tires.

[0147] In the above embodiments, for front-wheel-drive vehicles undergoing rapid acceleration, the air springs mounted on the front axle of the air suspension system are raised to shift the vehicle's center of gravity rearward, thereby improving braking efficiency. For rear-wheel-drive vehicles undergoing rapid acceleration, the air springs mounted on the rear axle of the air suspension system are raised to shift the vehicle's center of gravity forward, thereby improving braking efficiency. Thus, by further differentiating the vehicle's drive mode during rapid acceleration, the control method for the vehicle's air springs can be more accurately determined, thereby better adjusting and compensating for the vehicle's center of gravity, optimizing driving performance during rapid acceleration, and ultimately improving driver confidence during rapid acceleration.

[0148] In some embodiments, after adjusting the height of the air springs on the front or rear axle of the vehicle's air suspension system based on the control information, i.e., after step S103 above, the method further includes steps S104 to S106:

[0149] Step S104: Obtain the updated status parameters of the vehicle;

[0150] Step S105: If the updated state parameters meet the second preset condition, determine the updated control information for the air spring of the vehicle.

[0151] Step S106: Based on the updated control information, restore the height of the front or rear axle air springs of the air suspension system installed in the vehicle to their initial height.

[0152] Here, after adjusting the vehicle's air springs based on the vehicle's current driving state, the vehicle's state information is then acquired as updated state parameters.

[0153] The second preset condition represents the vehicle driving state condition under which the automatic adjustment of the vehicle's air springs is discontinued.

[0154] In some embodiments, the second preset condition includes switching from a forward gear (e.g., D gear) to a non-forward gear (e.g., non-D gear) using vehicle gear data collected by the power controller. Here, when the vehicle switches from a forward gear to a non-forward gear, it indicates that the vehicle has exited a state of rapid acceleration, rapid deceleration, uphill or downhill.

[0155] In some embodiments, when the current driving state of the vehicle is determined to be a rapid deceleration state based on step S102, the second preset condition includes that the updated acceleration is less than the first acceleration threshold and the duration exceeds the corresponding time threshold; or, when the current driving state of the vehicle is determined to be a rapid acceleration state based on step S102, the second preset condition includes that the updated acceleration is greater than the second acceleration threshold and the duration exceeds the corresponding time threshold.

[0156] In some embodiments, when the current driving state of the vehicle is determined to be uphill based on step S102, the second preset condition includes that the updated slope is less than the first slope threshold and the duration exceeds the corresponding time threshold; or, when the current driving state of the vehicle is determined to be downhill based on step S102, the second preset condition includes that the updated slope is less than the second slope threshold and the duration exceeds the corresponding time threshold.

[0157] In some embodiments, the second preset condition further includes a control unit for automatically adjusting the height of the air spring, i.e., a control unit for implementing the adaptive adjustment function malfunctions.

[0158] In some embodiments, the second preset condition further includes switching the vehicle's ignition signal from the ignition (ON) state to the ignition (OFF) state.

[0159] In this way, in response to the updated state parameters satisfying the second preset condition, updated control information for the air spring is determined, and the height of the air spring installed on the front or rear axle of the air suspension system is restored to the initial height according to the updated control information.

[0160] In the above embodiments, by detecting the vehicle's state parameters in real time, and restoring the air spring to its initial height when the updated state parameters meet the second preset condition, the vehicle's control logic is adjusted in conjunction with the vehicle's real-time state parameters, thereby reducing the computational resource requirements of the vehicle control unit and reducing the mechanical wear of the vehicle.

[0161] In some embodiments, the vehicle air spring control method provided by the present invention further includes the following step S107:

[0162] The display outputs the current driving status, vehicle center of gravity position change information, and air spring control information.

[0163] Here, the vehicle includes a display screen; wherein, the display screen may be a touch screen.

[0164] The display screen is used to show the current driving status of the output vehicle, such as uphill, downhill, rapid acceleration, or rapid deceleration.

[0165] The display screen is also used to display control information for the air springs of the vehicle, such as the rise information of the air springs mounted on the front or rear axle of the air suspension, or the height recovery information of the air springs mounted on the front or rear axle of the air suspension, etc.

[0166] By adjusting the height of the air springs, the vehicle's center of gravity shifts. The display screen also shows information about this change in the vehicle's center of gravity.

[0167] In the above embodiments, by using a display screen to show the user the vehicle's current driving status information and the air spring control information, the user can intuitively feel how the vehicle's driving performance changes with the driving status during driving, thereby improving the user's driving confidence.

[0168] Based on the foregoing embodiments, the present invention also provides a control device for a vehicle air spring. The various units and modules included in the device can be implemented by a processor in the vehicle; of course, they can also be implemented by specific logic circuits. In the implementation process, the processor can be an ECU, a VMC, etc.

[0169] Figure 2 This is a schematic diagram of the composition structure of a vehicle air spring control device provided by the present invention, as shown below. Figure 2 As shown, the control device 200 includes: a first determining module 210, a second determining module 220, and an adjusting module 230, wherein:

[0170] The first determining module 210 is used to determine the current driving state of the vehicle based on the vehicle's state parameters;

[0171] The second determining module 220 is used to determine control information for the air springs of the vehicle based on the driving mode of the vehicle and the current driving state when the current driving state meets the first preset condition.

[0172] The adjustment module 230 is used to adjust the height of the air springs on the front or rear axle of the air suspension system installed in the vehicle based on the control information.

[0173] In some embodiments, the first preset condition is that the current driving state is an uphill state or a downhill state, and the slope corresponding to the current driving state is greater than the corresponding slope threshold, and the duration corresponding to the current driving state is greater than a first time threshold.

[0174] The second determining module 220 is used to determine the control information of the air springs for the vehicle based on the driving mode of the vehicle and the slope corresponding to the current driving state.

[0175] In some embodiments, the current driving state is an uphill state;

[0176] The second determining module 220 is configured to perform one of the following:

[0177] When the vehicle is driven by a front-wheel drive system, based on the slope corresponding to the uphill state, it is determined that the air spring installed on the rear axle of the air suspension system of the vehicle will be raised to a first height.

[0178] When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the uphill state, it is determined that the air springs on the front axle of the air suspension system installed in the vehicle will be raised to a second height.

[0179] In some embodiments, the current driving state is a downhill state;

[0180] The second determining module 220 is configured to perform one of the following:

[0181] When the vehicle is driven by a front-wheel drive system, based on the slope corresponding to the downhill state, it is determined that the air springs on the front axle of the air suspension system installed in the vehicle will be raised to a third height.

[0182] When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the downhill state, it is determined that the air springs installed on the rear axle of the vehicle's air suspension system will be raised to a fourth height.

[0183] In some embodiments, the first preset condition is that the current driving state is a rapid acceleration state or a rapid deceleration state, and the absolute value of the acceleration corresponding to the current driving state is greater than the corresponding acceleration threshold, and the duration corresponding to the current driving state is greater than the second time threshold.

[0184] The second determining module 220 is used to determine control information for the air springs of the vehicle based on the driving mode of the vehicle and the acceleration corresponding to the current driving state.

[0185] In some embodiments, the current driving state is a rapid deceleration state;

[0186] The second determining module 220 is configured to perform one of the following:

[0187] When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid deceleration state, it is determined that the air spring installed on the rear axle of the vehicle's air suspension system will be raised to a fifth height.

[0188] When the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid deceleration state, it is determined that the air springs on the front axle of the vehicle's air suspension system will be raised to a sixth height.

[0189] In some embodiments, the current driving state is a rapid acceleration state;

[0190] The second determining module 220 is configured to perform one of the following:

[0191] When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid acceleration state, it is determined that the air springs installed on the front axle of the vehicle's air suspension system will be raised to the seventh height.

[0192] When the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid acceleration state, it is determined that the air spring installed on the rear axle of the vehicle's air suspension system will be raised to the eighth height.

[0193] The descriptions of the apparatus embodiments above are similar to those of the method embodiments above, and have similar beneficial effects. In some embodiments, the functions or modules included in the apparatus provided by the present invention can be used to perform the methods described in the above method embodiments. For technical details not disclosed in the apparatus embodiments of the present invention, please refer to the descriptions of the method embodiments of the present application for understanding.

[0194] Based on the foregoing embodiments, the present invention also provides a control system for a vehicle air spring. For example... Figure 3 As shown, the vehicle air spring control system 300 includes multiple sensors 310, a first controller 320, and a second controller 330; wherein,

[0195] The plurality of sensors 310 are used to collect vehicle status parameters;

[0196] The first controller 320 is communicatively connected to the plurality of sensors 310 to receive the status parameters; based on the status parameters, it determines the current driving state of the vehicle; and when the current driving state meets a first preset condition, it determines control information for the air spring based on the vehicle's driving mode and the current driving state.

[0197] The second controller 330 receives the control information from the first controller 320 to adjust the front axle height or rear axle height of the air spring based on the control information.

[0198] Here, the first controller 320 is used to implement the adaptive adjustment function. That is, the first controller 320 activates the adaptive adjustment function by determining that the current driving state of the vehicle meets the first preset condition, so as to determine the control information for the air spring based on the driving mode and the current driving state of the vehicle under the adaptive adjustment function.

[0199] In some embodiments, the control system 300 further includes a display screen 340;

[0200] The display screen 340 is communicatively connected to the first controller 320 to display the height information of the air springs on the front or rear axle of the vehicle's air suspension system.

[0201] Here, the control system 300 provides a human-machine interface via a display screen 340, allowing users to obtain information on the vehicle's current driving status, changes in the vehicle's center of gravity, and the height of the air springs on the front or rear axles of the vehicle's air suspension system. By displaying the vehicle's current driving status and air spring adjustment information to the user through the display screen 340, users can intuitively perceive how the vehicle's driving performance changes with driving conditions, thereby increasing their driving confidence.

[0202] In some embodiments, the control system 300 further includes a bus 350 to enable the first controller 320, the second controller 330, and the display screen 340 to communicate via the bus 350.

[0203] In some embodiments, bus 350 is a Controller Area Network (CAN) bus.

[0204] In some embodiments, the control system 300 further includes signal acquisition units corresponding to a plurality of sensors 310. For example, a wheel speed acquisition unit connected to a left front wheel speed sensor, a right front wheel speed sensor, a left rear wheel speed sensor, and a right rear wheel speed sensor mounted on the wheels of the vehicle; another example, a vehicle inertial signal acquisition unit connected to an inertial sensor; another example, an IGN signal acquisition unit; and so on.

[0205] In some embodiments, the signal acquisition unit is connected to the corresponding sensor via a hardwire.

[0206] In some embodiments, the signal acquisition unit is connected to the first controller 320 via a bus 350 to send the acquired sensor information to the first controller 320.

[0207] Below, in conjunction with Figure 4 The implementation process of an application embodiment utilizing the aforementioned vehicle air spring control system will be described in detail. For example... Figure 4 As shown, this embodiment includes the following steps S401 to S406:

[0208] Step S401: Collect vehicle status parameters using multiple sensors; then, proceed to step S402.

[0209] Here, the vehicle's state parameters include data such as wheel speed, lateral acceleration, longitudinal acceleration, gear position, accelerator pedal position, brake pedal position, and actual engine torque.

[0210] Step S402: Based on the vehicle's state parameters, the first controller determines the vehicle's current driving state; then, step S403 is executed.

[0211] Step S403: The first controller determines whether the adaptive adjustment function is activated; if yes, proceed to step S404; if no, proceed to step S401.

[0212] In step S404, the display screen outputs the vehicle's current driving status, center of gravity position change information, and air spring height information; then, step S405 is executed.

[0213] Here, with the adaptive adjustment function activated, the first controller determines the control information for the air springs based on the vehicle's current driving state and drive mode; the first controller sends the control information to the second controller, so that the second controller adjusts the height of the air springs installed on the front or rear axle of the air suspension based on the control information, thereby achieving the purpose of adjusting the vehicle's center of gravity position; then, the vehicle's current driving state, center of gravity position change information, and air spring height information are displayed on the vehicle's display screen.

[0214] Step S405: The first controller determines whether to exit the adaptive adjustment function; if yes, proceed to step S406; if no, proceed to step S404.

[0215] Here, the first controller acquires and updates the vehicle's status parameters in real time, and determines to exit the adaptive adjustment function if the updated status parameters meet the second preset condition; otherwise, it continues to execute the adaptive adjustment function.

[0216] In step S406, the display screen exits displaying the vehicle's current driving status, center of gravity position change information, and air spring height information.

[0217] Below, in conjunction with Figure 5The implementation process of one embodiment of the first controller exiting the adaptive adjustment function according to the present invention will be described in detail. Figure 5 As shown, this embodiment includes the following steps S501 to S506:

[0218] Step S501: The first controller activates the adaptive adjustment function and obtains the updated status parameters in real time; then, step S502 is executed.

[0219] Here, the updated status parameters include vehicle gear data, acceleration data, gradient data, operating status data of the module in the first controller used to perform adaptive adjustment function, and ignition signal, etc.

[0220] Step S502: Determine whether the gear data has switched from D gear to non-D gear; if not, proceed to step S503; if yes, proceed to step S506.

[0221] Step S503: Determine whether the updated state parameters do not meet the first preset condition; if not, proceed to step S504; if yes, proceed to step S506.

[0222] Here, if the vehicle's current driving state is a rapid acceleration state, and the updated acceleration is less than the first acceleration threshold and the duration exceeds the corresponding time threshold, then it is determined that the first preset condition is not met.

[0223] If the vehicle is in a state of rapid deceleration, and the updated acceleration is greater than the second acceleration threshold and the duration exceeds the corresponding time threshold, then the first preset condition is not met.

[0224] If the vehicle is currently driving uphill, and the updated gradient is less than the first gradient threshold and the duration exceeds the corresponding time threshold, then the first preset condition is not met.

[0225] If the vehicle's current driving state is determined to be downhill, and the updated slope is less than the second slope threshold and the duration exceeds the corresponding time threshold, then the first preset condition is determined not to be met.

[0226] Step S504: Determine whether the operating status of the adaptive adjustment function is abnormal; if not, proceed to step S505; if yes, proceed to step S506.

[0227] Here, if the adaptive adjustment function malfunctions, it exits; otherwise, it continues to execute.

[0228] Step S505: Determine whether the vehicle ignition signal has switched from ON to OFF; if not, proceed to step S502; if yes, proceed to step S506.

[0229] Step S506: Exit the adaptive adjustment function.

[0230] Below, in conjunction with Figure 6 The control logic diagram of the first controller after activating the adaptive adjustment function according to the present invention will be described in detail.

[0231] like Figure 6 As shown, multiple sensors installed on the vehicle are used to collect the vehicle's engine torque signal 610, gear signal 620, accelerator pedal position signal 630, brake pedal position signal 640, wheel speed signal 650, longitudinal acceleration signal 660, and lateral acceleration signal 670, respectively.

[0232] like Figure 6 The control logic indicated by the solid arrow, at step S601, determines whether the vehicle is currently in an uphill or downhill state based on the engine torque signal 610, gear signal 620, accelerator pedal position signal 630, brake pedal position signal 640, wheel speed signal 650, longitudinal acceleration signal 660, and lateral acceleration signal 670; Figure 6 The control logic indicated by the dashed arrow in step S602 determines whether the vehicle is currently in a state of rapid acceleration or rapid deceleration based on the accelerator pedal position signal 630, the brake pedal position signal 640, the wheel speed signal 650, and the lateral acceleration signal 670.

[0233] At step S601, it can be determined that the vehicle is in two states, namely, state 680 and state 690. State 680 indicates that the vehicle is in an uphill state, and the uphill slope is greater than threshold A1 and the duration is greater than time threshold B1. State 690 indicates that the vehicle is in a downhill state, and the downhill slope is greater than threshold A2 and the duration is greater than time threshold B2.

[0234] If the vehicle is in state 680, continue to determine the vehicle's drive mode; if the vehicle is a front-wheel drive vehicle, execute step S603 to raise the air spring installed on the rear axle, that is, raise the air spring installed on the rear axle of the vehicle's air suspension system; if the vehicle is a rear-wheel drive vehicle, execute step S604 to raise the air spring installed on the front axle, that is, raise the air spring installed on the front axle of the vehicle's air suspension system.

[0235] If the vehicle is determined to be in state 690, the vehicle's drive mode is determined. If the vehicle is a front-wheel drive vehicle, step S605 is executed to raise the air springs installed on the front axle, that is, to raise the air springs installed on the front axle of the vehicle's air suspension system. If the vehicle is a rear-wheel drive vehicle, step S606 is executed to raise the air springs installed on the rear axle, that is, to raise the air springs installed on the rear axle of the vehicle's air suspension system.

[0236] At step S602, it can be determined that the vehicle is in two states, namely, state 6110 and state 6120; wherein, state 6110 indicates that the vehicle is in a state of rapid acceleration, and the acceleration is greater than threshold X1 and the duration is greater than time threshold Y1; state 6120 indicates that the vehicle is in a state of rapid deceleration, and the acceleration is greater than threshold X2 and the duration is greater than time threshold Y2.

[0237] In state 6110, the vehicle's drive mode is determined again; if the vehicle is a front-wheel drive vehicle, step S607 is executed to raise the air spring installed on the front axle, that is, to raise the air spring installed on the front axle of the vehicle's air suspension system; if the vehicle is a rear-wheel drive vehicle, step S608 is executed to raise the air spring installed on the rear axle, that is, to raise the air spring installed on the rear axle of the vehicle's air suspension system.

[0238] In state 6120, the vehicle's drive mode is determined again; if the vehicle is a front-wheel drive vehicle, step S609 is executed to raise the air spring installed on the rear axle, that is, to raise the air spring installed on the rear axle of the vehicle's air suspension system; if the vehicle is a rear-wheel drive vehicle, step S6010 is executed to raise the air spring installed on the front axle, that is, to raise the air spring installed on the front axle of the vehicle's air suspension system.

[0239] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A method for controlling a vehicle air spring, comprising: Based on the vehicle's state parameters, determine the vehicle's current driving state; When the current driving state meets the first preset condition, control information for the air springs of the vehicle is determined based on the vehicle's driving mode and the current driving state. Based on the control information, adjust the height of the air springs on the front or rear axle of the air suspension system installed in the vehicle. The first preset condition is that the current driving state is uphill or downhill, the slope corresponding to the current driving state is greater than the corresponding slope threshold, and the duration corresponding to the current driving state is greater than the first time threshold. The determination of control information for the air springs of the vehicle based on the vehicle's drive mode and current driving state includes one of the following: When the vehicle is front-wheel drive, based on the slope corresponding to the uphill state, it is determined that the air spring installed on the rear axle of the air suspension system of the vehicle will be raised to a first height; or, based on the slope corresponding to the downhill state, it is determined that the air spring installed on the front axle of the air suspension system of the vehicle will be raised to a third height. When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the uphill state, it is determined that the air springs installed on the front axle of the vehicle's air suspension system will be raised to a second height; or, based on the slope corresponding to the downhill state, it is determined that the air springs installed on the rear axle of the vehicle's air suspension system will be raised to a fourth height.

2. The method according to claim 1, characterized in that, The first preset condition is that the current driving state is a rapid acceleration state or a rapid deceleration state, and the absolute value of the acceleration corresponding to the current driving state is greater than the corresponding acceleration threshold, and the duration corresponding to the current driving state is greater than the second time threshold. The determination of control information for the air springs of the vehicle based on the vehicle's drive mode and current driving state includes: Based on the vehicle's driving mode and the acceleration corresponding to the current driving state, control information for the vehicle's air springs is determined.

3. The method according to claim 2, characterized in that, The current driving state is a rapid deceleration state; The determination of control information for the air springs of the vehicle based on the vehicle's driving mode and the acceleration corresponding to the current driving state includes one of the following: When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid deceleration state, it is determined that the air spring installed on the rear axle of the vehicle's air suspension system will be raised to a fifth height. When the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid deceleration state, it is determined that the air springs on the front axle of the vehicle's air suspension system will be raised to a sixth height.

4. The method according to claim 2, characterized in that, The current driving state is a rapid acceleration state; The determination of control information for the air springs of the vehicle based on the vehicle's driving mode and the acceleration corresponding to the current driving state includes one of the following: When the vehicle is driven by a front-wheel drive system, based on the acceleration corresponding to the rapid acceleration state, it is determined that the air springs installed on the front axle of the vehicle's air suspension system will be raised to the seventh height. When the vehicle is driven in a rear-wheel drive configuration, based on the acceleration corresponding to the rapid acceleration state, it is determined that the air spring installed on the rear axle of the vehicle's air suspension system will be raised to the eighth height.

5. The method according to any one of claims 1 to 4, wherein after adjusting the height of the air springs on the front or rear axle of the air suspension system of the vehicle based on the control information, the method further comprises: Obtain the updated status parameters of the vehicle; If the updated state parameters meet the second preset condition, the updated control information for the air springs of the vehicle is determined. Based on the updated control information, the height of the front or rear axle air springs of the air suspension system installed in the vehicle is restored to the initial height.

6. A control device for a vehicle air spring, comprising: The first determining module is used to determine the current driving state of the vehicle based on the vehicle's state parameters; The second determining module is used to determine control information for the air springs of the vehicle based on the vehicle's driving mode and the current driving state, when the current driving state meets the first preset condition. An adjustment module is used to adjust the height of the air springs on the front or rear axle of the air suspension system of the vehicle based on the control information. The first preset condition is that the current driving state is uphill or downhill, the slope corresponding to the current driving state is greater than the corresponding slope threshold, and the duration corresponding to the current driving state is greater than the first time threshold. The second determining module is configured to perform one of the following: When the vehicle is front-wheel drive, based on the slope corresponding to the uphill state, it is determined that the air spring installed on the rear axle of the air suspension system of the vehicle will be raised to a first height; or, based on the slope corresponding to the downhill state, it is determined that the air spring installed on the front axle of the air suspension system of the vehicle will be raised to a third height. When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the uphill state, it is determined that the air springs installed on the front axle of the vehicle's air suspension system will be raised to a second height; or, based on the slope corresponding to the downhill state, it is determined that the air springs installed on the rear axle of the vehicle's air suspension system will be raised to a fourth height.

7. A control system for a vehicle air spring, comprising multiple sensors, a first controller, and a second controller; wherein, The multiple sensors are used to collect the vehicle's status parameters; The first controller is communicatively connected to the plurality of sensors to receive the status parameters; Based on the state parameters, the current driving state of the vehicle is determined; When the current driving state meets the first preset condition, control information for the air springs of the vehicle is determined based on the vehicle's driving mode and the current driving state. The second controller receives the control information from the first controller to adjust the height of the air springs on the front or rear axle of the air suspension system of the vehicle based on the control information. The first preset condition is that the current driving state is uphill or downhill, the slope corresponding to the current driving state is greater than the corresponding slope threshold, and the duration corresponding to the current driving state is greater than the first time threshold. The control system is configured to perform one of the following: When the vehicle is front-wheel drive, based on the slope corresponding to the uphill state, it is determined that the air spring installed on the rear axle of the air suspension system of the vehicle will be raised to a first height; or, based on the slope corresponding to the downhill state, it is determined that the air spring installed on the front axle of the air suspension system of the vehicle will be raised to a third height. When the vehicle is driven in a rear-wheel drive configuration, based on the slope corresponding to the uphill state, it is determined that the air springs installed on the front axle of the vehicle's air suspension system will be raised to a second height; or, based on the slope corresponding to the downhill state, it is determined that the air springs installed on the rear axle of the vehicle's air suspension system will be raised to a fourth height.

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