Shock absorber control method, system and vehicle

Abstract

This invention discloses a shock absorber control method, system, and automobile. The shock absorber control method includes acquiring current vehicle driving information; acquiring steering control threshold information; outputting trigger control information based on the driving information and steering control threshold information; and outputting shock absorber control current based on the trigger control information to control the shock absorber, thereby improving handling stability during vehicle steering, reducing the risk of vehicle rollover, and improving comfort.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a shock absorber control method, system, and automobile. Background Technology

[0002] To improve vehicle handling and comfort, semi-active electronically controlled damper systems have become an essential feature in most vehicles. Currently, electronically controlled dampers generally employ basic roof control algorithms. However, roof control lacks input and judgment of road surface and vehicle posture in special road conditions, such as transient and steady-state steering, affecting driving stability and comfort. The mainstream approach combines air suspension and electronically controlled dampers to mitigate body roll during steering, but this is costly. Lower-cost semi-active suspension electronically controlled damper systems lack information on vehicle posture around the X-axis, making it difficult to achieve the necessary handling precision and comfort in transient and steady-state steering scenarios. Summary of the Invention

[0003] This invention provides a shock absorber control method, system, and vehicle to improve handling and stability during vehicle steering, while also enhancing comfort.

[0004] According to one aspect of the present invention, a vibration damper control method is provided, comprising:

[0005] Obtain the current vehicle's driving information;

[0006] Obtain steering control threshold information;

[0007] Based on the driving information and the steering control threshold information, trigger control information is output;

[0008] The vibration damper control current is output according to the trigger control information to control the vibration damper.

[0009] Optionally, obtain vehicle driving information, including:

[0010] Obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering velocity.

[0011] Optionally, obtaining steering control threshold information includes:

[0012] Obtain the first preset lateral acceleration;

[0013] Based on the driving information and the steering control threshold information, trigger control information is output, including:

[0014] Determine whether the lateral acceleration is less than the first preset lateral acceleration;

[0015] If not, output trigger control information;

[0016] If so, output ceiling control information and control the vibration damper according to the ceiling control information.

[0017] Optionally, the trigger control information includes at least steady-state trigger control information and transient trigger control information;

[0018] Output trigger control information includes:

[0019] Obtain the second preset lateral acceleration;

[0020] Determine whether the lateral acceleration is greater than the second preset lateral acceleration;

[0021] If so, then transient trigger control information is output based on the roll rate, the lateral acceleration, and the rate of change of the angular velocity;

[0022] If not, then output steady-state trigger control information based on the roll rate and the steering angle.

[0023] Optionally, before outputting the damper control current according to the trigger control information to control the damper, the method further includes:

[0024] Obtain the current distribution coefficient.

[0025] Optionally, the current distribution coefficient includes at least a first current distribution coefficient corresponding to the roll angular velocity, a second current distribution coefficient corresponding to the lateral acceleration, and a third current distribution coefficient corresponding to the rate of change of the angular velocity;

[0026] Outputting a damper control current based on the trigger control information to control the damper, including:

[0027] The vibration damper control current is output based on the first current distribution coefficient, the second current distribution coefficient, the third current distribution coefficient, and the transient trigger control information to control the vibration damper.

[0028] Optionally, the current distribution coefficient includes at least a fourth current distribution coefficient corresponding to the roll angular velocity and a fifth current distribution coefficient corresponding to the turning angle;

[0029] The vibration damper control current is output based on the fourth current distribution coefficient, the fifth current distribution coefficient, and the steady-state trigger control information to control the vibration damper.

[0030] Optionally, after obtaining the vehicle's driving information, the following may also be included:

[0031] Get the current vehicle speed, turning speed, preset speed, preset turning angle, and preset turning speed;

[0032] Determine whether the vehicle speed is greater than the preset vehicle speed, whether the turning angle is greater than the preset turning angle, or whether the turning speed is greater than the preset turning speed;

[0033] If so, then obtain the steering control threshold information;

[0034] If not, output ceiling control information, and control the vibration damper according to the ceiling control information.

[0035] According to another aspect of the present invention, a vibration damper control system is provided, applying the vibration damper control method described in any of the above embodiments, the vibration damper control system comprising:

[0036] The driving information acquisition module is used to acquire the current driving information of the vehicle.

[0037] Steering control threshold information acquisition module, used to acquire steering control threshold information;

[0038] A trigger control information acquisition module is used to output trigger control information based on the driving information and the steering control threshold information;

[0039] The vibration damper control current output module is used to output the vibration damper control current according to the trigger control information in order to control the vibration damper.

[0040] According to another aspect of the present invention, an automobile is provided, characterized in that it includes the shock absorber control system described in the above aspects.

[0041] The technical solution of this invention provides a shock absorber control method, which includes acquiring current vehicle driving information; acquiring steering control threshold information; outputting trigger control information based on the driving information and steering control threshold information; and outputting shock absorber control current based on the trigger control information to control the shock absorber, thereby improving the handling and stability accuracy during vehicle steering, reducing the risk of vehicle rollover, and improving comfort.

[0042] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1A flowchart of a vibration damper control method provided in an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of a vibration damper control system provided in an embodiment of the present invention;

[0046] Figure 3 A flowchart of another vibration damper control method provided in an embodiment of the present invention;

[0047] Figure 4 A flowchart of another vibration damper control method provided in an embodiment of the present invention;

[0048] Figure 5 A flowchart of another vibration damper control method provided in an embodiment of the present invention;

[0049] Figure 6 A flowchart of another vibration damper control method provided in an embodiment of the present invention;

[0050] Figure 7 A flowchart of another vibration damper control method provided in an embodiment of the present invention;

[0051] Figure 8 A flowchart of another vibration damper control method provided in an embodiment of the present invention;

[0052] Figure 9 This is a schematic diagram of a vibration damper control system provided in an embodiment of the present invention. Detailed Implementation

[0053] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0054] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] Figure 1 This is a flowchart illustrating a shock absorber control method provided in an embodiment of the present invention. This embodiment is applicable to automotive shock absorber control. The method can be executed by a shock absorber control system, which can be implemented in hardware and / or software, such as... Figure 1 As shown, the method includes:

[0056] S101, obtain the current vehicle's driving information.

[0057] in, Figure 2 This is a schematic diagram of a vibration damper control system provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the shock absorber control system includes at least a variable damping shock absorber 14, a height sensor 10, a steering angle sensor 12, an inertial measurement unit 11, and a shock absorber control unit 13. The vehicle's driving information can be obtained through the various devices in the shock absorber control system, which typically include roll rate, lateral acceleration, steering angle, and rate of change of steering angle, and are obtained accordingly based on the vehicle's state in different subsequent scenarios.

[0058] S102, Obtain steering control threshold information.

[0059] The steering control threshold information can include steering control threshold information corresponding to the vehicle state in different scenarios, so as to determine whether the vehicle is in transient steering or steady-state steering, and then control the vehicle's shock absorbers accordingly to ensure the normal operation of the vehicle.

[0060] S103 outputs trigger control information based on driving information and steering control threshold information.

[0061] Specifically, based on the vehicle's driving information and steering control threshold information, the current state of the vehicle is determined, and corresponding trigger control information is output. The trigger control information can include transient trigger control information and steady-state trigger control information, thereby ensuring that the vehicle can stably complete the turning operation.

[0062] S104 outputs the damper control current according to the trigger control information to control the damper.

[0063] The system outputs trigger control information based on the vehicle's state in different scenarios, and then outputs shock absorber control current based on this information. Since the stiffness of the left and right sides of the vehicle differs during cornering, applying the same shock absorber control current would generate the same damping force, leading to vehicle imbalance and increasing the risk of rollover. To ensure vehicle comfort and reduce rollover risk, vehicles typically have four shock absorbers located at the front left, rear left, front right, and rear right. During cornering, the front left and rear left shock absorbers are controlled by the same shock absorber control current, as are the front right and rear right shock absorbers. This controls the damping force of the shock absorbers during cornering, improving the accuracy of damping force control, reducing the false recognition rate, and thus ensuring stable cornering and improving comfort.

[0064] This invention provides an embodiment of the invention that obtains current vehicle driving information and steering control threshold information to output trigger control information, and then outputs shock absorber control current based on the trigger control information to control the shock absorber, thereby improving the handling and stability accuracy during vehicle steering, reducing the risk of vehicle rollover, and improving comfort.

[0065] Optional, Figure 3 A flowchart of another vibration damper control method provided in an embodiment of the present invention is shown below. Figure 3 As shown, the method includes:

[0066] S201, obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering rate.

[0067] The inertial measurement unit (IMU) is typically located at the vehicle's center of gravity, capable of receiving signals with a 50mm distance difference. It can calculate the acceleration of the sprung mass along six axes, i.e., lateral acceleration. Based on the frequency distribution of the IMU signal from the semi-active suspension damper, noise is predominantly at high frequencies. Therefore, a high-pass filter is used to avoid constant signals, retaining only dynamic signals; a low-pass filter filters out noise, thus obtaining the roll rate. The steering angle sensor is typically located on the steering wheel or in the electric power steering system to measure the steering angle. The derivative of the steering angle is then used to obtain the rate of change of the steering angle velocity.

[0068] S202, Obtain steering control threshold information.

[0069] S203 outputs trigger control information based on roll rate, lateral acceleration, steering angle, rate of change of steering rate, and steering control threshold information.

[0070] Specifically, the system triggers control information based on the vehicle state in different scenarios. When the vehicle is in transient steering, transient trigger control information is output based on roll rate, lateral acceleration, rate of change of steering angle, and steering control threshold information. When the vehicle is in transient steering, steady-state trigger control information is output based on roll rate, steering angle, and steering control threshold information.

[0071] S204 outputs the damper control current according to the trigger control information to control the damper.

[0072] This invention provides a method to obtain information on the current vehicle's roll rate, lateral acceleration, steering angle, rate of change of steering rate, and steering control threshold. It then outputs trigger control information and outputs damper control current based on the trigger control information to control the damper, thereby improving the handling and stability accuracy of the vehicle during steering and reducing the risk of vehicle rollover.

[0073] Optional, Figure 4 A flowchart of another vibration damper control method provided in an embodiment of the present invention is shown below. Figure 4 As shown, the method includes:

[0074] S301, obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering rate.

[0075] S302, obtain the first preset lateral acceleration.

[0076] S303, determine whether the lateral acceleration is less than the first preset lateral acceleration; if yes, proceed to step S304; if no, proceed to step S305.

[0077] S304 outputs ceiling control information, which is used to control the vibration damper.

[0078] S305 outputs trigger control information.

[0079] Specifically, the lateral acceleration of the current vehicle is compared with a first preset lateral acceleration. If the current lateral acceleration is less than the first preset lateral acceleration, the vehicle is not undergoing steering and is in a normal driving state. In this case, the basic ceiling control algorithm can be used, which outputs ceiling control information to control the shock absorbers, thereby affecting the vehicle's driving state. If the current lateral acceleration is greater than or equal to the first preset lateral acceleration, the vehicle is considered to be in a steering state, and a trigger control signal is output to ensure the vehicle's handling accuracy and comfort in transient and steady-state steering scenarios.

[0080] S306 outputs damper control current based on trigger control information to control the damper.

[0081] This invention provides an embodiment of the invention that obtains the current vehicle's roll rate, lateral acceleration, steering angle, rate of change of steering rate, and a first preset lateral acceleration, and outputs corresponding ceiling control information or trigger control information to control the shock absorber, thereby improving the handling and stability accuracy during vehicle steering and ensuring comfort.

[0082] Optional, Figure 5 A flowchart of another vibration damper control method provided in an embodiment of the present invention is shown below. Figure 5 As shown, the trigger control information includes at least steady-state trigger control information and transient trigger control information; the method includes:

[0083] S401, obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering rate.

[0084] S402, obtain the first preset lateral acceleration.

[0085] S403, determine whether the lateral acceleration is less than the first preset lateral acceleration; if yes, proceed to step S404; if no, proceed to step S405.

[0086] S404 outputs ceiling control information, which is used to control the vibration damper.

[0087] S405, obtain the second preset lateral acceleration.

[0088] S406, determine whether the lateral acceleration is greater than the second preset lateral acceleration; if yes, proceed to step S407; if no, proceed to step S408.

[0089] Furthermore, the lateral acceleration of the current vehicle is compared with the second preset lateral acceleration. If the current lateral acceleration is greater than the second preset lateral acceleration, the current vehicle is performing a transient steering operation. If the current lateral acceleration is less than or equal to the second preset lateral acceleration, the current vehicle is performing a steady-state steering operation.

[0090] S407 outputs transient trigger control information based on roll rate, lateral acceleration, and rate of change of angular velocity.

[0091] The height sensor has two connection points to the vehicle body: one to the control arm and the other to the subframe. The height sensor uses the common Psi5 protocol. It measures the vehicle height and outputs an angle signal α between the controller and the subframe. The shock absorber control unit converts this angle signal α into the corresponding vehicle height value d between the wheel center and the wheel arch. This value is then converted to the shock absorber stroke D using the leverage ratio β, typically satisfying d = kα + b and D = β*d = β*(kα + b), where k and b are linear equation coefficients. The shock absorber speed is then obtained by differentiating the shock absorber stroke D, and the current vehicle speed can be acquired. Based on the shock absorber speed and vehicle speed, the critical point for triggering transient steering control is determined. When the current lateral acceleration exceeds a second preset lateral acceleration, the trends in roll rate, lateral acceleration, and angular velocity change rates are considered to reflect the vehicle's motion state. This results in the output of transient trigger control information, correspondingly outputting shock absorber control current to control the shock absorber, ensuring transient steering operation and maintaining handling stability.

[0092] S408 outputs steady-state trigger control information based on roll rate and steering angle.

[0093] When the lateral acceleration is less than or equal to the second preset lateral acceleration, there is no sharp turn and no transient steering is triggered. Only the trend of the change in roll rate and steering angle needs to be considered to reflect the vehicle's motion state. Then, steady-state trigger control information is output, and corresponding shock absorber control current is output to control the shock absorber and ensure the vehicle's steady-state steering operation.

[0094] S409 outputs damper control current based on transient trigger control information or steady-state trigger control information to control the damper.

[0095] This invention acquires the current lateral acceleration, the first lateral acceleration, and the second preset lateral acceleration, and outputs transient trigger control information or steady-state trigger control information accordingly. The corresponding output damper control current controls the damper, thereby improving the handling and stability accuracy during vehicle steering and ensuring comfort.

[0096] Optional, Figure 6 A flowchart of another vibration damper control method provided in an embodiment of the present invention is shown below. Figure 6 As shown, the method includes:

[0097] S501, obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering rate.

[0098] S502, obtain the first preset lateral acceleration.

[0099] S503, determine whether the lateral acceleration is less than the first preset lateral acceleration; if yes, proceed to step S504; if no, proceed to step S505.

[0100] S504 outputs ceiling control information, which is used to control the vibration damper.

[0101] S505, obtain the second preset lateral acceleration.

[0102] S506, determine whether the lateral acceleration is greater than the second preset lateral acceleration; if yes, proceed to step S507; if no, proceed to step S508.

[0103] S507 outputs transient trigger control information based on roll rate, lateral acceleration, and rate of change of angular velocity.

[0104] S508 then outputs steady-state trigger control information based on the roll rate and steering angle.

[0105] S509, obtain the current distribution coefficient.

[0106] S510 outputs the damper control current based on the current distribution coefficient and transient trigger control information or the current distribution coefficient and steady-state trigger control information to control the damper.

[0107] In the transient steering of the vehicle, the control current of the shock absorber needs to be estimated based on the roll rate, lateral acceleration, and rate of change of steering angle. In the steady-state steering of the vehicle, the control current of the shock absorber needs to be estimated based on the roll rate and steering angle. The maximum current distribution coefficient is 1, which corresponds to the stiffest state of the shock absorber. The minimum current distribution coefficient is 0, which corresponds to the softest state of the shock absorber. The current distribution coefficient can be selected according to actual needs to change the control state of the shock absorber and achieve optimal control.

[0108] This invention, through obtaining transient or steady-state trigger control information, introduces a current distribution coefficient to accurately output the control current of the shock absorbers on both the inner and outer sides during vehicle steering, thereby controlling the shock absorbers and ensuring the handling and stability accuracy and comfort during vehicle steering.

[0109] Optional, Figure 7 A flowchart of another vibration damper control method provided in an embodiment of the present invention is shown below. Figure 7 As shown, the method includes:

[0110] S601, obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering rate.

[0111] S602, obtain the first preset lateral acceleration.

[0112] S603, determine whether the lateral acceleration is less than the first preset lateral acceleration; if yes, proceed to step S604; if no, proceed to step S605.

[0113] S604 outputs ceiling control information, which is used to control the vibration damper.

[0114] S605, obtain the second preset lateral acceleration.

[0115] S606, determine whether the lateral acceleration is greater than the second preset lateral acceleration; if yes, proceed to step S607; if no, proceed to step S608.

[0116] S607 outputs transient trigger control information based on roll rate, lateral acceleration, and rate of change of angular velocity.

[0117] S608 then outputs steady-state trigger control information based on the roll rate and steering angle.

[0118] S609, obtain the current distribution coefficient, which includes at least a first current distribution coefficient corresponding to the roll angular velocity, a second current distribution coefficient corresponding to the lateral acceleration, and a third current distribution coefficient corresponding to the rate of change of angular velocity.

[0119] S610 outputs the damper control current based on the first current distribution coefficient, the second current distribution coefficient, the third current distribution coefficient, and the transient trigger control information to control the damper.

[0120] When the vehicle is in transient steering, it is necessary to consider the roll rate, lateral acceleration, and rate of change of steering angle to obtain the corresponding damper control current, as exemplified in Tables 1, 2, and 3. Current distribution coefficients are selected for different roll rates, lateral accelerations, and rates of change of steering angle to obtain the damper control current and control the damper. The first, second, and third current distribution coefficients can be selected according to actual needs, and this embodiment of the invention does not impose specific limitations.

[0121] Table 1. Correspondence between roll rate and first current distribution coefficient during transient steering.

[0122]

[0123] Table 2. Correspondence between lateral acceleration and second current distribution coefficient during transient steering.

[0124]

[0125]

[0126] Table 3. Correspondence between the rate of change of angular velocity and the third current distribution coefficient during transient steering.

[0127]

[0128] S611, obtain the current distribution coefficient, which includes at least the fourth current distribution coefficient corresponding to the roll angular velocity and the fifth current distribution coefficient corresponding to the turning angle.

[0129] S612 outputs the damper control current based on the fourth current distribution coefficient, the fifth current distribution coefficient, and the steady-state trigger control information to control the damper.

[0130] When the vehicle is in steady-state steering, the roll rate and steering angle need to be considered to obtain the corresponding damper control current, as exemplified in Tables 4 and 5. Current distribution coefficients are selected for different roll rates and steering angles to obtain the damper control current and control the damper. The fourth and fifth current distribution coefficients can be selected according to actual needs, and this embodiment of the invention does not impose specific limitations.

[0131] Table 4. Correspondence between roll rate and fourth current distribution coefficient during steady-state steering.

[0132]

[0133]

[0134] Table 5. Correspondence between steering angle and fifth current distribution coefficient during steady-state steering.

[0135]

[0136] This invention, through obtaining a first current distribution coefficient corresponding to the roll angular velocity, a second current distribution coefficient corresponding to the lateral acceleration, and a third current distribution coefficient corresponding to the rate of change of steering angular velocity, as well as a fourth current distribution coefficient corresponding to the roll angular velocity and a fifth current distribution coefficient corresponding to the steering angle, accurately outputs the damper control current during the vehicle's steady-state steering process, thereby controlling the damper and ensuring the handling stability and comfort during vehicle steering.

[0137] Optional, Figure 8 A flowchart of another vibration damper control method provided in an embodiment of the present invention is shown below. Figure 8 As shown, the method includes:

[0138] S801, obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering rate.

[0139] S802, obtain the current vehicle speed, turning speed, preset speed, preset turning angle and preset turning speed.

[0140] S803, determine whether the vehicle speed is greater than the preset vehicle speed, whether the turning angle is greater than the preset turning angle, or whether the turning speed is greater than the preset turning speed; if yes, proceed to step S804; if no, proceed to step S805.

[0141] Before steering control, the current vehicle status needs to be determined. If any one of the following conditions is met: the vehicle speed is not greater than the preset speed, the turning angle is not greater than the preset turning angle, or the turning velocity is not greater than the preset turning velocity, then it is considered that the current vehicle is not undergoing steering operation. In this case, the basic ceiling control algorithm is used to output ceiling control information, and the shock absorbers are controlled according to the ceiling control information. If the vehicle speed is greater than the preset speed, the turning angle is greater than the preset turning angle, and the turning velocity is greater than the preset turning velocity, then it is considered that the current vehicle is undergoing steering operation, and steering control is initiated.

[0142] S804, obtain steering control threshold information.

[0143] S805 outputs ceiling control information, which is used to control the vibration damper.

[0144] S806 outputs trigger control information based on roll rate, lateral acceleration, steering angle, rate of change of steering rate, and steering control threshold information.

[0145] S807 outputs damper control current based on trigger control information to control the damper.

[0146] This invention provides an embodiment of the invention that determines the current operating status of a vehicle by judging whether the vehicle speed is greater than a preset speed, whether the turning angle is greater than a preset turning angle, or whether the turning speed is greater than a preset turning speed, and then performs corresponding operations to ensure the normal operation of the vehicle.

[0147] Figure 9 This is a schematic diagram of a vibration damper control system provided in an embodiment of the present invention. Applying the vibration damper control method described in any of the above embodiments, the vibration damper control system includes:

[0148] The driving information acquisition module 201 is used to acquire the driving information of the current vehicle;

[0149] Steering control threshold information acquisition module 202 is used to acquire steering control threshold information;

[0150] The trigger control information acquisition module 203 is used to output trigger control information based on driving information and steering control threshold information;

[0151] The vibration damper control current output module 204 is used to output the vibration damper control current according to the trigger control information in order to control the vibration damper.

[0152] It should be noted that since the vibration damper control system provided in this embodiment includes any of the vibration damper control methods provided in the embodiments of the present invention, it has the same or corresponding beneficial effects as the vibration damper control method, and will not be elaborated here.

[0153] This invention also provides an automobile, which includes at least a housing, within which a shock absorber control system as described above is included.

[0154] It should be noted that since the automobile provided in this embodiment includes any of the shock absorber control systems described in the embodiments of the present invention, it has the same or corresponding beneficial effects as the shock absorber control system, which will not be elaborated here.

[0155] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A vibration damper control method, characterized in that, include: Obtain the current vehicle's driving information; Obtain steering control threshold information; Based on the driving information and the steering control threshold information, trigger control information is output; The vibration damper control current is output according to the trigger control information to control the vibration damper; Obtain vehicle driving information, including: Obtain the current vehicle's roll rate, lateral acceleration, steering angle, and rate of change of steering velocity; Obtaining steering control threshold information includes: Obtain the first preset lateral acceleration; Based on the driving information and the steering control threshold information, trigger control information is output, including: Determine whether the lateral acceleration is less than the first preset lateral acceleration; If not, output trigger control information; If so, output ceiling control information, and control the vibration damper according to the ceiling control information; The trigger control information includes at least steady-state trigger control information and transient trigger control information; Output trigger control information includes: Obtain the second preset lateral acceleration; Determine whether the lateral acceleration is greater than the second preset lateral acceleration; If so, then transient trigger control information is output based on the roll rate, the lateral acceleration, and the rate of change of the angular velocity; If not, then output steady-state trigger control information based on the roll rate and the steering angle.

2. The damper control method according to claim 1, characterized by, Before outputting the damper control current according to the trigger control information to control the damper, the following steps are also included: Obtain the current distribution coefficient.

3. The damper control method according to claim 2, characterized by, The current distribution coefficient includes at least a first current distribution coefficient corresponding to the roll angular velocity, a second current distribution coefficient corresponding to the lateral acceleration, and a third current distribution coefficient corresponding to the rate of change of the angular velocity. Outputting a damper control current based on the trigger control information to control the damper, including: The vibration damper control current is output based on the first current distribution coefficient, the second current distribution coefficient, the third current distribution coefficient, and the transient trigger control information to control the vibration damper.

4. The damper control method according to claim 2, characterized by, The current distribution coefficient includes at least a fourth current distribution coefficient corresponding to the roll angular velocity and a fifth current distribution coefficient corresponding to the turning angle; The vibration damper control current is output based on the fourth current distribution coefficient, the fifth current distribution coefficient, and the steady-state trigger control information to control the vibration damper.

5. The vibration damper control method according to claim 1, characterized in that, After obtaining the vehicle's driving information, it also includes: Get the current vehicle speed, turning speed, preset speed, preset turning angle, and preset turning speed; Determine whether the vehicle speed is greater than the preset vehicle speed, whether the turning angle is greater than the preset turning angle, or whether the turning speed is greater than the preset turning speed; If so, then obtain the steering control threshold information; If not, output ceiling control information, and control the vibration damper according to the ceiling control information.

6. A shock absorber control system characterized by comprising: The vibration damper control method according to any one of claims 1-5, wherein the vibration damper control system comprises: The driving information acquisition module is used to acquire the current driving information of the vehicle. Steering control threshold information acquisition module, used to acquire steering control threshold information; A trigger control information acquisition module is used to output trigger control information based on the driving information and the steering control threshold information; The vibration damper control current output module is used to output the vibration damper control current according to the trigger control information in order to control the vibration damper.

7. An automobile characterized by comprising: Includes the vibration damper control system described in claim 6.

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