Method, apparatus and device for controlling damping force of shock absorber, and readable storage medium

Abstract

Disclosed in the present application are a method, apparatus and device for controlling a damping force of a shock absorber, and a computer-readable storage medium. The method comprises: detecting whether the distance between a piston rod of a shock absorber and a buffer block is smaller than a preset distance; if the distance therebetween is smaller than the preset distance, detecting whether the shock absorber is in a compressed state; and if the shock absorber is in a compressed state, outputting a current of a preset intensity to an electromagnetic valve, such that the shock absorber generates a damping force corresponding to the current of the preset intensity, wherein the preset intensity is greater than a current intensity determined on the basis of a preset damping control algorithm.

Description

Shock absorber damping force control method, device, equipment and readable storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202311277451.5, filed on September 27, 2023, entitled “Shock absorber damping force control method, device, apparatus and readable storage medium,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of air suspension, and to a shock absorber damping force control method, device, equipment and computer-readable storage medium. Background Art

[0004] Currently, more and more cars are equipped with air suspension, which generally has a speed-adjustable function. That is, when the vehicle speed exceeds a certain set value, the height of the entire vehicle is adjusted to a lower posture, and the shock absorber is also compressed to a lower position. In this case, the distance between the shock absorber piston rod and the buffer block is small. If the entire vehicle generates a vertical movement, the controller will output a control current to the solenoid valve according to the existing damping control algorithm (such as the skyhook control algorithm) to make the shock absorber generate a damping force. However, since the intensity of the control current determined by the skyhook control algorithm is relatively small, the damping force generated by the shock absorber is also relatively small. Therefore, the compression of the shock absorber cannot be suppressed, causing the shock absorber piston rod to impact the buffer block, resulting in abnormal noise, which affects the driving experience.

[0005] Summary of the Invention

[0006] According to some embodiments of the present disclosure, a shock absorber damping force control method, device, equipment and computer-readable storage medium solve the problem in the prior art that when the damping force of the shock absorber is controlled according to the skyhook control algorithm, the shock absorber piston rod cannot be suppressed from impacting the buffer block and generating abnormal noise.

[0007] In the first aspect, according to some embodiments of the present disclosure, a shock absorber damping force control method is provided, and the shock absorber damping force control method may include: detecting whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance; if it is less than the preset distance, detecting whether the shock absorber is in a compression state; if the shock absorber is in a compression state, outputting a current of a preset intensity to the solenoid valve so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm.

[0008] In a second aspect, a shock absorber damping force control device according to some embodiments of the present disclosure may include: a first detection module for detecting whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance; a second detection module for detecting whether the shock absorber is in a compression state if it is less than the preset distance; and a current control module for outputting a current of a preset intensity to the solenoid valve if the shock absorber is in a compression state, so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm.

[0009] In the third aspect, according to some embodiments of the present disclosure, a shock absorber damping force control device may include: a processor, a memory, and a shock absorber damping force control program stored in the memory and executable by the processor, wherein when the shock absorber damping force control program is executed by the processor, the steps of the above shock absorber damping force control method are implemented.

[0010] In a fourth aspect, according to some embodiments of the present disclosure, a computer-readable storage medium stores a shock absorber damping force control program, wherein when the shock absorber damping force control program is executed by a processor, the steps of the above shock absorber damping force control method are implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 shows a flow chart of a method for controlling the damping force of a shock absorber according to some embodiments of the present disclosure;

[0012] FIG2 shows a schematic diagram of a detailed process of step S10 in FIG1 ;

[0013] FIG3 shows a schematic diagram of functional modules of a shock absorber damping force control device according to some embodiments of the present disclosure;

[0014] FIG4 shows a schematic diagram of the hardware structure of a shock absorber damping force control device according to some embodiments of the present disclosure;

[0015] FIG5 shows a schematic structural diagram of a computer-readable storage medium according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0016] To help those skilled in the art better understand the present disclosure, the following will provide a clear and complete description of the technical solutions in the embodiments of the present disclosure, in conjunction with the accompanying drawings. It is clear that the described embodiments are only a portion of the embodiments of the present disclosure, not all of them. All other embodiments derived by those skilled in the art based on the embodiments of the present disclosure without creative effort are within the scope of protection of the present disclosure.

[0017] The terms "including" and "having" and any variations thereof in the specification and claims of the present disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to be different types.

[0018] In the description of the embodiments of the present disclosure, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of the present disclosure should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0019] In the description of the embodiments of the present disclosure, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In some embodiments, in the description of the embodiments of the present disclosure, “multiple” refers to two or more than two.

[0020] In some processes described in the embodiments of the present disclosure, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present disclosure or may be executed in parallel. The sequence numbers of the operations are only used to distinguish different operations and the sequence numbers themselves do not represent any execution order. In some embodiments, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0021] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0022] In a first aspect, a method for controlling damping force of a shock absorber according to some embodiments of the present disclosure is provided.

[0023] In some implementations, referring to FIG. 1 , a flow chart of a method for controlling the damping force of a shock absorber according to some embodiments of the present disclosure is shown.

[0024] As shown in Figure 1, the shock absorber damping force control method includes:

[0025] Step S10, detecting whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance;

[0026] In some embodiments, the distance between the shock absorber piston rod and the buffer block can be compared with a preset distance to detect whether the distance between the shock absorber piston rod and the buffer block is less than the preset distance. In some embodiments, the preset distance can be set according to actual needs, and the distance between the shock absorber piston rod and the buffer block can be determined using various methods, such as sensor perception, image recognition, etc.

[0027] In some embodiments, a distance sensor may be installed at the location where the piston rod contacts the buffer block, and the value collected by the distance sensor is used as the distance between the piston rod and the buffer block; or a distance sensor may be installed at the location where the buffer block contacts the piston rod, and the value collected by the distance sensor is used as the distance between the piston rod and the buffer block. Considering that the piston rod and the buffer block frequently impact, a distance sensor with strong impact resistance is selected.

[0028] In some embodiments, a camera may be provided at a relevant position to photograph the piston rod and the buffer block, and the distance between the piston rod and the buffer block may be determined using image recognition technology on the photographed images.

[0029] It should be noted that the above is only a schematic description of the methods that can be used to determine the distance between the shock absorber piston rod and the buffer block, and does not constitute a limitation on the methods for determining the distance between the shock absorber piston rod and the buffer block. The distance between the shock absorber piston rod and the buffer block can be determined in a corresponding manner according to actual needs.

[0030] In some embodiments, "the distance between the shock absorber piston rod and the buffer block is less than a preset distance" and "the distance between the shock absorber piston rod and the buffer block is greater than or equal to a preset distance" can also be regarded as two states, and which state is established can be determined by detecting relevant values.

[0031] Step S20: If the distance is less than the preset distance, then detect whether the shock absorber is in a compressed state;

[0032] In some embodiments, if the distance between the shock absorber piston rod and the buffer block is less than a preset distance, it means that the distance between the shock absorber piston rod and the buffer block is relatively close. If the movement direction of the shock absorber piston rod is toward the buffer block at this time, it means that the shock absorber piston rod is about to hit the buffer block; if the movement direction of the shock absorber piston rod is away from the buffer block at this time, it means that the shock absorber piston rod will not hit the buffer block.

[0033] It is easy to understand that if the shock absorber piston rod is about to hit the buffer block, an abnormal noise may be generated during the collision. Therefore, when it is detected that the distance between the shock absorber piston rod and the buffer block is less than the preset distance, it is necessary to further determine whether the shock absorber piston rod is about to hit the buffer block. Therefore, it is necessary to perform a step to detect whether the shock absorber is in a compressed state.

[0034] In some embodiments, when the shock absorber is in a compression state, it indicates that the movement direction of the shock absorber piston rod is toward the buffer block, and it is determined that the shock absorber piston rod is about to hit the buffer block; when the shock absorber is not in a compression state, it indicates that the movement direction of the shock absorber piston rod is not toward the buffer block, and it is determined that the shock absorber piston rod will not hit the buffer block.

[0035] In some embodiments, whether the shock absorber is in a compression state can be determined based on the direction of movement of the shock absorber. For example, the velocity of the shock absorber in a compression state is defined as a negative value, and the velocity of the shock absorber in a tension state is defined as a positive value, where the positive and negative values ​​of the velocity represent different directions of movement. Based on this, the velocity of the shock absorber is obtained, and whether the shock absorber is in a compression state or a tension state is determined based on whether the velocity is a positive or negative value.

[0036] In step S30 , if the shock absorber is in a compressed state, a current of a preset intensity is output to the solenoid valve so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm.

[0037] In some embodiments, if the distance between the shock absorber piston rod and the buffer block is determined to be less than a preset distance and the shock absorber is in a compressed state based on the determination in steps S10 and S20, it indicates that the shock absorber piston rod is about to impact the buffer block. To prevent the piston rod from striking the buffer block with excessive force and causing abnormal noise, a current of a preset intensity is output to the solenoid valve, causing the shock absorber to generate a damping force corresponding to the preset current intensity. The preset intensity is greater than the current intensity determined by the preset damping control algorithm.

[0038] It should be noted that a preset damping control algorithm (e.g., a skyhook damping control algorithm) determines the current intensity of the current output to the solenoid valve based on relevant state variables. However, if a current corresponding to the current intensity determined by the preset damping control algorithm is output to the solenoid valve, the damping force generated by the shock absorber will be insufficient to suppress the compression of the shock absorber, causing the shock absorber piston rod to impact the buffer block, resulting in abnormal noise and affecting the driving experience. Therefore, in some embodiments, a relatively higher current is output to the solenoid valve to enable the shock absorber to generate a damping force sufficient to suppress the compression of the shock absorber, thereby reducing the impact force of the shock absorber piston rod on the buffer block and minimizing the impact abnormality.

[0039] In the embodiment of the present disclosure, it is detected whether the distance between the shock absorber piston rod and the buffer block is less than the preset distance; if it is less than the preset distance, it is detected whether the shock absorber is in a compressed state; if the shock absorber is in a compressed state, a current of a preset intensity is output to the solenoid valve so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm. Through the embodiment of the present disclosure, when it is detected that the distance between the shock absorber piston rod and the buffer block is less than the preset distance and the shock absorber is in a compressed state, the current intensity output to the solenoid valve is not determined according to the preset damping control algorithm (such as the ceiling damping control algorithm), but the current of the preset intensity is directly output to the solenoid valve. Since the preset intensity is higher than the current intensity determined by the preset damping control algorithm, the shock absorber generates a larger damping force, thereby effectively suppressing the compression of the shock absorber, greatly reducing the impact force of the shock absorber piston rod on the buffer block, and effectively avoiding the generation of abnormal noise.

[0040] In some embodiments, referring to FIG2 , a schematic diagram of a detailed process of step S10 in FIG1 is shown. As shown in FIG2 , step S10 includes:

[0041] Step S101, obtaining the actual height of the shock absorber;

[0042] Step S102, detecting whether the difference between the actual height of the shock absorber and the preset height is less than a threshold, wherein the preset height is the height of the shock absorber when it moves to the lowest position;

[0043] Step S103: If the distance is less than the threshold, it is determined that the distance between the shock absorber piston rod and the buffer block is less than the preset distance.

[0044] In some embodiments, "the distance between the shock absorber piston rod and the buffer block is less than a preset distance" and "the distance between the shock absorber piston rod and the buffer block is greater than or equal to a preset distance" are regarded as two states. By detecting whether the difference between the actual height of the shock absorber and the preset height is less than a threshold, it is determined which state is established based on the detection result.

[0045] In some embodiments, the actual height of the shock absorber is first obtained. A height sensor can be set on the shock absorber, and the value collected by the height sensor is used as the actual height of the shock absorber; or, a camera is set at a relevant position to photograph the shock absorber and at least one reference object, and image recognition technology is used to determine the actual height of the shock absorber from the photographed image.

[0046] It should be noted that the above is only a schematic description of the methods that can be used to obtain the actual height of the shock absorber, and does not constitute a limitation on the methods of obtaining the actual height of the shock absorber. The actual height of the shock absorber can be obtained in a corresponding manner according to actual needs.

[0047] After obtaining the actual height of the shock absorber, the actual height of the shock absorber is subtracted from the preset height to obtain the difference between the actual height and the preset height. The difference between the actual height and the preset height is then compared with a threshold to determine whether the difference between the actual height and the preset height is less than the threshold. The preset height is the height of the shock absorber when it moves to its lowest position. Based on this, it is easy to understand that if the difference between the actual height and the preset height is less than the threshold, it means that the current actual position of the shock absorber is very close to the lowest position to which the shock absorber can move, and therefore it is determined that the distance between the shock absorber piston rod and the buffer block is less than the preset distance.

[0048] In some embodiments, step S101 includes:

[0049] The actual vehicle height value collected by the height sensor corresponding to the location of the shock absorber is obtained; based on the numerical conversion relationship between the vehicle height and the shock absorber height, the actual height of the shock absorber corresponding to the actual vehicle height value is obtained.

[0050] In some embodiments, when the vehicle body height changes, the vehicle body will drive the upper end of the shock absorber to move, the swing arm will rotate accordingly, and the value of the height sensor fixed between the swing arm and the vehicle body will change accordingly. Therefore, the actual vehicle body height value collected by the height sensor can represent the actual height of the shock absorber to a certain extent.

[0051] Because the air suspension system architectures may vary across different vehicle models, in some implementations, the actual vehicle height value captured by the height sensor corresponding to the location of the shock absorber may be directly used as the actual height of the shock absorber, i.e., the numerical conversion relationship between the vehicle height and the shock absorber height is one-to-one. In other implementations / examples, a numerical conversion relationship between the vehicle height and the shock absorber height is determined based on the arrangement of the shock absorber and the height sensor. Thus, after obtaining the actual vehicle height value captured by the height sensor corresponding to the location of the shock absorber, the actual vehicle height value captured by the height sensor corresponding to the location of the shock absorber is converted based on the numerical conversion relationship between the vehicle height and the shock absorber height to obtain the actual height of the shock absorber corresponding to the actual vehicle height value.

[0052] In some embodiments, the actual height of the shock absorber can be determined by utilizing the existing height sensor on the air suspension system and based on the value collected by the height sensor, thereby achieving the purpose of detecting whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance, without adding additional hardware, thus avoiding an increase in hardware costs.

[0053] In some embodiments, after step S10, the method further includes:

[0054] If the distance is greater than or equal to the preset distance, a control current is output to the solenoid valve based on the current intensity determined by the preset damping control algorithm.

[0055] In some embodiments, if the distance between the shock absorber piston rod and the buffer block is determined to be greater than or equal to a preset distance, it indicates that the shock absorber piston rod is not about to impact the buffer block, and therefore, there is no need to worry about the generation of abnormal noise. In this case, a control current is output to the solenoid valve based on a preset damping control algorithm. The preset damping control algorithm is, for example, a ceiling damping control algorithm.

[0056] In some implementations, after step S20, the method further includes:

[0057] If the shock absorber is not in a compressed state, a control current is output to the solenoid valve based on a current intensity determined by a preset damping control algorithm.

[0058] In some embodiments, if it is determined that the shock absorber is not in a compressed state, it indicates that the shock absorber piston rod is not about to hit the buffer block, and therefore there is no need to worry about the generation of abnormal noise. In this case, a control current is output to the solenoid valve based on a preset damping control algorithm, such as a skyhook damping control algorithm.

[0059] Based on the above-disclosed content, in the embodiment of the present disclosure, it is detected whether the distance between the shock absorber piston rod and the buffer block is less than the preset distance; if it is less than the preset distance, it is detected whether the shock absorber is in a compressed state; if the shock absorber is in a compressed state, a current of a preset intensity is output to the solenoid valve, so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm. Through the embodiment of the present application, when it is detected that the distance between the shock absorber piston rod and the buffer block is less than the preset distance and the shock absorber is in a compressed state, the current intensity output to the solenoid valve is not determined according to the preset damping control algorithm (such as the ceiling damping control algorithm), but the current of the preset intensity is directly output to the solenoid valve, so that the shock absorber generates a larger damping force, thereby effectively suppressing the compression of the shock absorber, greatly reducing the impact force of the shock absorber piston rod on the buffer block, and effectively avoiding the generation of abnormal noise.

[0060] In a second aspect, a shock absorber damping force control device according to some embodiments of the present disclosure is provided.

[0061] In some embodiments, referring to FIG3 , a functional module diagram of a shock absorber damping force control device according to some embodiments of the present disclosure is shown. As shown in FIG3 , the shock absorber damping force control device includes:

[0062] The first detection module 10 is used to detect whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance;

[0063] The second detection module 20 is used to detect whether the shock absorber is in a compressed state if the distance is less than a preset distance;

[0064] The current control module 30 is used to output a current of a preset intensity to the solenoid valve if the shock absorber is in a compression state, so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm.

[0065] In some embodiments, the first detection module 10 is used to:

[0066] Get the actual height of the shock absorber;

[0067] Detecting whether the difference between the actual height of the shock absorber and the preset height is less than a threshold, wherein the preset height is the height of the shock absorber when it moves to the lowest position;

[0068] If it is less than the threshold, it is determined that the distance between the shock absorber piston rod and the buffer block is less than the preset distance.

[0069] In some embodiments, the first detection module 10 is used to:

[0070] Obtain the actual vehicle height value collected by the height sensor corresponding to the location of the shock absorber;

[0071] Based on the numerical conversion relationship between the vehicle body height and the shock absorber height, the actual height of the shock absorber corresponding to the actual vehicle body height value is obtained.

[0072] In some embodiments, the preset intensity is an upper limit of a current intensity range that the solenoid valve can receive.

[0073] In some embodiments, the current control module 30 is further configured to:

[0074] If the distance is greater than or equal to the preset distance, a control current is output to the solenoid valve based on the current intensity determined by the preset damping control algorithm.

[0075] In some embodiments, the current control module 30 is further configured to:

[0076] If the shock absorber is not in a compressed state, a control current is output to the solenoid valve based on a current intensity determined by a preset damping control algorithm.

[0077] In some embodiments, the functional implementation of each module in the above-mentioned shock absorber damping force control device corresponds to the steps in the above-mentioned shock absorber damping force control method embodiment, and their functions and implementation processes are not repeated here one by one.

[0078] In a third aspect, according to some embodiments of the present disclosure, a shock absorber damping force control device may be a device with data processing capabilities, such as a personal computer (PC), a laptop computer, or a server.

[0079] 4 , a schematic diagram of the hardware structure of a shock absorber damping force control device according to some embodiments of the present disclosure is shown. In the embodiments of the present disclosure, the shock absorber damping force control device may include a processor, a memory, a communication interface, and a communication bus.

[0080] In some embodiments, the communication bus can be of any type that can interconnect the processor, memory, and communication interface.

[0081] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces, used to interconnect components within the shock absorber damping force control device, as well as interfaces used to interconnect the shock absorber damping force control device with other devices (such as other computing devices or user devices). Physical interfaces can be Ethernet, fiber optic, or ATM interfaces; user devices can be displays, keyboards, and other devices.

[0082] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0083] The processor may be a general-purpose processor that can invoke a shock absorber damping force control program stored in a memory and execute the shock absorber damping force control method according to some embodiments of the present disclosure. For example, the general-purpose processor may be a central processing unit (CPU). In some embodiments, the method executed when the shock absorber damping force control program is invoked may refer to the various embodiments of the shock absorber damping force control method disclosed herein and will not be further described here.

[0084] Those skilled in the art will understand that the hardware structure shown in FIG4 does not constitute a limitation on the present disclosure, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0085] 5 , there is shown a schematic structural diagram of a computer-readable storage medium according to some embodiments of the present disclosure.

[0086] In a fourth aspect, a computer-readable storage medium according to some embodiments of the present disclosure is provided.

[0087] In an embodiment of the present disclosure, a computer-readable storage medium stores a shock absorber damping force control program. When the shock absorber damping force control program is executed by a processor, the following steps are implemented:

[0088] Check whether the distance between the shock absorber piston rod and the buffer block is less than the preset distance;

[0089] If it is less than the preset distance, it detects whether the shock absorber is in a compressed state;

[0090] If the shock absorber is in a compressed state, a current of a preset intensity is output to the solenoid valve so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm.

[0091] In some embodiments, when the shock absorber damping force control program is executed by a processor, the following steps are further implemented:

[0092] Get the actual height of the shock absorber;

[0093] Detecting whether the difference between the actual height of the shock absorber and the preset height is less than a threshold, wherein the preset height is the height of the shock absorber when it moves to the lowest position;

[0094] If it is less than the threshold, it is determined that the distance between the shock absorber piston rod and the buffer block is less than the preset distance.

[0095] In some embodiments, when the shock absorber damping force control program is executed by a processor, the following steps are further implemented:

[0096] Obtain the actual vehicle height value collected by the height sensor corresponding to the location of the shock absorber;

[0097] Based on the numerical conversion relationship between the vehicle body height and the shock absorber height, the actual height of the shock absorber corresponding to the actual vehicle body height value is obtained.

[0098] In some embodiments, the preset intensity is an upper limit of a current intensity range that the solenoid valve can receive.

[0099] In some embodiments, when the shock absorber damping force control program is executed by a processor, the following steps are further implemented:

[0100] If the distance is greater than or equal to the preset distance, a control current is output to the solenoid valve based on the current intensity determined by the preset damping control algorithm.

[0101] In some embodiments, when the shock absorber damping force control program is executed by a processor, the following steps are further implemented:

[0102] If the shock absorber is not in a compressed state, a control current is output to the solenoid valve based on a current intensity determined by a preset damping control algorithm.

[0103] In some embodiments, the method implemented when the shock absorber damping force control program is executed can refer to the various embodiments of the shock absorber damping force control method disclosed in the present invention, and will not be described in detail here.

[0104] It should be noted that the serial numbers of the above-mentioned embodiments of the present disclosure are only for description and do not represent the advantages or disadvantages of the embodiments.

[0105] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and in some embodiments can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of the present disclosure.

[0106] The above are only preferred embodiments of the present disclosure and are not intended to limit the patent scope of the present disclosure. Any equivalent structure or equivalent process transformation made using the contents of the present disclosure and the drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present disclosure.

Claims

1. A method for controlling the damping force of a shock absorber, comprising: Detect whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance; If it is less than the preset distance, it detects whether the shock absorber is in a compressed state; If the shock absorber is in a compression state, a current of a preset intensity is output to the solenoid valve so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm.

2. The shock absorber damping force control method according to claim 1, wherein: The detecting whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance comprises: Get the actual height of the shock absorber; Detecting whether the difference between the actual height of the shock absorber and the preset height is less than a threshold value, wherein the preset height is the height of the shock absorber when it moves to the lowest position; If it is less than the threshold, it is determined that the distance between the shock absorber piston rod and the buffer block is less than the preset distance.

3. The shock absorber damping force control method according to claim 2, wherein: The obtaining of the actual height of the shock absorber comprises: Obtaining the actual vehicle height value collected by the height sensor corresponding to the location of the shock absorber; Based on the numerical conversion relationship between the vehicle body height and the shock absorber height, the actual height of the shock absorber corresponding to the actual vehicle body height value is obtained.

4. The shock absorber damping force control method according to claim 1, wherein: The preset intensity is the upper limit of the current intensity range that the solenoid valve can receive.

5. The shock absorber damping force control method according to claim 1, after detecting whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance, further comprising: If it is greater than or equal to the preset distance, a control current is output to the solenoid valve based on the current intensity determined by the preset damping control algorithm.

6. The shock absorber damping force control method according to claim 1, after detecting whether the shock absorber is in a compression state, further comprising: If the shock absorber is not in a compressed state, a control current is output to the solenoid valve based on a current intensity determined by a preset damping control algorithm.

7. A shock absorber damping force control device, comprising: A first detection module, used to detect whether the distance between the shock absorber piston rod and the buffer block is less than a preset distance; The second detection module is used to detect whether the shock absorber is in a compressed state if the distance is less than a preset distance; The current control module is used to output a current of a preset intensity to the solenoid valve if the shock absorber is in a compressed state, so that the shock absorber generates a damping force corresponding to the current of the preset intensity, and the preset intensity is greater than the current intensity determined by the preset damping control algorithm.

8. The shock absorber damping force control device according to claim 7, wherein: The preset intensity is the upper limit of the current intensity range that the solenoid valve can receive.

9. A shock absorber damping force control device, comprising a processor, a memory, and a shock absorber damping force control program stored in the memory and executable by the processor, wherein: When the shock absorber damping force control program is executed by the processor, the steps of the shock absorber damping force control method according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium having a shock absorber damping force control program stored thereon, wherein: When the shock absorber damping force control program is executed by the processor, the steps of the shock absorber damping force control method according to any one of claims 1 to 6 are implemented.

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