Front and back air suspension adjusting method and device, electronic control unit and storage medium

Abstract

The invention provides a front and rear air suspension adjusting method and device, an electronic control unit and a storage medium, and belongs to the field of automobile chassis, and the method comprises the following steps: determining the real-time height ratio of the front and rear air suspensions and the maximum height ratio of the front and rear air suspensions under the condition that a vehicle is determined to be in light load based on the air bag pressure of the air suspensions; adjusting the heights of the front and rear air suspensions by taking the real-time height ratio equal to the maximum height ratio as a target; under the condition that the vehicle is determined to be in a medium and heavy load state, a first difference value between the real-time height of the front air suspension and the maximum height of the front air suspension and a second difference value between the real-time height of the rear air suspension and the maximum height of the rear air suspension are determined, and a ratio of the first difference value to the second difference value is used for determining the real-time height of the front air suspension and the maximum height of the rear air suspension; and adjusting the heights of the front and rear air suspensions by taking the maximum height ratio of the front and rear air suspensions as a target. The problem that the height of the front suspension and the height of the rear suspension of the commercial vehicle cannot reach the required height at the same time can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile chassis, in particular to a front and rear air suspension adjusting method and device, an electronic control unit and a storage medium. BACKGROUND

[0002] The height of the front and rear air suspensions of a commercial vehicle is generally controlled separately. The front and rear suspensions have different loads and air spring volumes, so the height adjustment speed of the front and rear suspensions is different when the height is adjusted. This results in that the front and rear suspensions cannot reach the required height at the same time. Since the cargo box is connected to the main vehicle, the front and rear of the cargo box and the main vehicle cannot be connected in place at the same time when the cargo box is detached, which causes uneven stress on the front and rear support brackets. SUMMARY

[0003] Therefore, it is necessary to provide a front and rear air suspension adjusting method and device, an electronic control unit and a storage medium to solve the technical problem that the front and rear suspensions of a commercial vehicle cannot reach the required height at the same time.

[0004] To solve the above problems, in a first aspect, the present application provides a front and rear air suspension adjusting method, comprising: In a case where it is determined that the vehicle is lightly loaded based on the air pressure of the air bag of the air suspension, determining a real-time height ratio of the front and rear air suspensions and a maximum height ratio of the front and rear air suspensions, and adjusting the height of the front and rear air suspensions with the real-time height ratio being equal to the maximum height ratio as a target. In a case where it is determined that the vehicle is medium or heavily loaded based on the air pressure of the air bag of the air suspension, determining a first difference between the real-time height of the front air suspension and the maximum height of the front air suspension and a second difference between the real-time height of the rear air suspension and the maximum height of the rear air suspension, and adjusting the height of the front and rear air suspensions with the ratio of the first difference to the second difference being equal to the maximum height ratio of the front and rear air suspensions as a target.

[0005] In a possible implementation, adjusting the height of the front and rear air suspensions with the real-time height ratio being equal to the maximum height ratio as a target comprises: In a case where the real-time height ratio is greater than a first threshold value, controlling the inflation speed of the front air suspension to decrease and the inflation speed of the rear air suspension to increase, and in a case where the real-time height ratio is less than or equal to the first threshold value and greater than or equal to a second threshold value, controlling the inflation speed of the front air suspension to be the same as that of the rear air suspension. The first threshold value is obtained by further increasing a first set value based on the maximum height ratio, and the second threshold value is obtained by further decreasing the first set value based on the maximum height ratio.

[0006] In a possible implementation, the height of the front and rear air suspensions is adjusted so that the real-time height ratio is equal to the maximum height ratio, and the method further includes: In a case where the real-time height ratio is less than the second threshold value, the inflation speed of the front air suspension is controlled to increase and the inflation speed of the rear air suspension is controlled to decrease, and in a case where the real-time height ratio is less than or equal to the first threshold value and greater than or equal to the second threshold value, the inflation speeds of the front and rear air suspensions are controlled to be the same.

[0007] In a possible implementation, the height of the front and rear air suspensions is adjusted so that the ratio of the first difference value to the second difference value is equal to the maximum height ratio of the front and rear air suspensions, and the method includes: In a case where the ratio of the first difference value to the second difference value is greater than a third threshold value, the inflation speed of the front air suspension is controlled to increase and the inflation speed of the rear air suspension is controlled to decrease, and in a case where the ratio of the first difference value to the second difference value is less than or equal to the third threshold value and greater than or equal to a fourth threshold value, the inflation speeds of the front and rear air suspensions are controlled to be the same; The third threshold value is obtained by further increasing a second set value on the basis of the maximum height ratio, and the fourth threshold value is obtained by further decreasing the second set value on the basis of the maximum height ratio.

[0008] In a possible implementation, the height of the front and rear air suspensions is adjusted so that the ratio of the first difference value to the second difference value is equal to the maximum height ratio of the front and rear air suspensions, and the method further includes: In a case where the ratio of the first difference value to the second difference value is less than the fourth threshold value, the inflation speed of the front air suspension is controlled to decrease and the inflation speed of the rear air suspension is controlled to increase, and in a case where the ratio of the first difference value to the second difference value is less than or equal to the third threshold value and greater than or equal to the fourth threshold value, the inflation speeds of the front and rear air suspensions are controlled to be the same.

[0009] In a possible implementation, the vehicle is determined to be lightly loaded based on the air pressure of the air bag of the air suspension, and the method includes: Obtaining an axle load corresponding to a light load and medium-heavy load threshold of the vehicle, and a relationship curve between the axle load data of the vehicle and the air pressure of the air bag of the air suspension, to determine a critical air bag pressure corresponding to the light load and medium-heavy load threshold of the vehicle; In a case where the actual air bag pressure of the air suspension is less than the critical air bag pressure, the vehicle is determined to be lightly loaded.

[0010] In a possible implementation, the vehicle is determined to be medium-heavy loaded based on the air pressure of the air bag of the air suspension, and the method includes: In a case that the actual air bag pressure of the air suspension is greater than or equal to the critical air bag pressure, the vehicle is determined as medium or heavy load.

[0011] In a second aspect, the present application further provides a front and rear air suspension adjusting device, comprising: A first adjusting module is configured to, in a case that the vehicle is determined as light load based on the air bag pressure of the air suspension, determine a real-time height ratio of the front and rear air suspensions and a maximum height ratio of the front and rear air suspensions, and adjust the height of the front and rear air suspensions with a target that the real-time height ratio is equal to the maximum height ratio. A second adjusting module is configured to, in a case that the vehicle is determined as medium or heavy load based on the air bag pressure of the air suspension, determine a first difference between the real-time height of the front air suspension and the maximum height of the front air suspension and a second difference between the real-time height of the rear air suspension and the maximum height of the rear air suspension, and adjust the height of the front and rear air suspensions with a target that the ratio of the first difference to the second difference is equal to the maximum height ratio of the front and rear air suspensions.

[0012] In a third aspect, the present application further provides an electronic control unit, comprising a memory and a processor, wherein, The memory is configured to store a program. The processor, coupled with the memory, is configured to execute the program stored in the memory to implement the steps of the front and rear air suspension adjusting method according to any one of the above.

[0013] In a fourth aspect, the present application further provides a non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the front and rear air suspension adjusting method according to any one of the above.

[0014] The front and rear air suspension adjusting method, device, electronic control unit and storage medium provided by the present application have the following beneficial effects: by distinguishing the load state of the commercial vehicle into light load and medium or heavy load, and then adopting different adjusting strategies, in a case that the load of the vehicle is light load, the height of the front and rear air suspensions is adjusted with a target that the real-time height ratio of the front and rear air suspensions is equal to the maximum height ratio of the front and rear air suspensions, so as to ensure that the inflation speeds of the front and rear suspensions are the same, the heights of the front and rear suspensions are guaranteed to be synchronous during height adjustment, and the required suspension height is reached. In a case that the load of the vehicle is medium or heavy load, the height of the front and rear air suspensions is adjusted with a target that the ratio of the first difference to the second difference is equal to the maximum height ratio of the front and rear air suspensions, so as to ensure that the inflation speeds of the front and rear suspensions are the same, the heights of the front and rear suspensions are guaranteed to be synchronous during height adjustment, and the required suspension height is reached.

[0015] The present application adopts the above two adjustment modes for two different loads, ensures the inflation speed of the front and rear suspension air bags consistent, can simultaneously reach the required suspension height, solves the technical problem that the front and rear suspension heights of the commercial vehicle cannot simultaneously reach the required height, thereby ensuring that the cargo box and the front and rear of the main vehicle can be simultaneously connected in place when the cargo box is thrown, and ensuring that the front and rear support brackets are evenly stressed. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 A flow chart of one embodiment of the air suspension adjustment method provided by the present application for front and rear air suspensions; Figure 2 A structural schematic diagram of the air suspension of the commercial vehicle chassis provided by the present application; Figure 3 A principle block diagram of one embodiment of the front and rear air suspension adjustment device provided by the present application; Figure 4 A structural schematic diagram of one embodiment of the electronic device provided by the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0019] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0020] In the embodiments of the present application, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment comprising a series of steps or modules does not have to be limited to the clearly listed steps or modules, but can include other steps or modules not clearly listed or inherent to the process, method, product or equipment.

[0021] The naming or numbering of the steps appearing in the embodiments of the present application does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering, and the flow steps that have been named or numbered can change the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0022] Reference herein to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that the phrase in the specification do not necessarily all refer to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] The present application provides a front and rear air suspension adjustment method, device, electronic control unit and storage medium, which are described below respectively.

[0024] The present application provides a front and rear air suspension adjustment method, which can be realized by an ECU (electronic control unit), as shown in Figure 1 The front and rear air suspension adjustment method comprises: S101, in the case that the air bag pressure of the air suspension determines that the vehicle is lightly loaded, determining the real-time height ratio of the front and rear air suspensions, and the maximum height ratio of the front and rear air suspensions, and adjusting the height of the front and rear air suspensions with the real-time height ratio being equal to the maximum height ratio as the target.

[0025] It can be understood that the pressure sensor for collecting the air bag pressure of the air suspension is installed in the air supply unit or the electromagnetic valve body, directly detects the change of the air bag pressure, and the collected data can be transmitted to the ECU through the CAN bus. The load of the vehicle and the air bag pressure of the air suspension have a corresponding relationship, so the load of the vehicle can be determined by the air bag pressure, and then it is determined whether the vehicle is lightly loaded.

[0026] S102, in the case that the air bag pressure of the air suspension determines that the vehicle is medium or heavy loaded, determining the first difference between the real-time height of the front air suspension and the maximum height of the front air suspension, and the second difference between the real-time height of the rear air suspension and the maximum height of the rear air suspension, and adjusting the height of the front and rear air suspensions with the ratio of the first difference to the second difference being equal to the maximum height ratio of the front and rear air suspensions as the target.

[0027] It can be understood that, based on the air suspension air bag pressure determination of the vehicle is medium heavy load, can be compared with a set of air pressure threshold air suspension air bag pressure, greater than the air pressure threshold, indicating that the vehicle is medium heavy load, air pressure threshold can be 3 bar. Adjust the height of the front and rear air suspension, can be achieved by adjusting the air bag other inflation speed.

[0028] In some embodiments, the schematic diagram of the air suspension structure of the commercial vehicle chassis is shown as Figure 2 It includes: air cylinder 201, front axle solenoid valve 202, front suspension air spring 203, front suspension air pressure sensor 204, remote controller 205, controller 206, rear axle air spring 207, rear suspension air pressure sensor 208, rear axle solenoid valve 209, rear suspension height sensor 210 and front suspension height sensor 211.

[0029] The remote controller 205 receives wireless signal input to the controller 206, and the controller 206 controls the front axle solenoid valve 202 and the rear axle solenoid valve 209.

[0030] In some embodiments, the height of the front and rear air suspension is adjusted by targeting the real-time height ratio equal to the maximum height ratio, including: In the case of the real-time height ratio greater than the first threshold value, the inflation speed of the front air suspension is controlled to decrease, and the inflation speed of the rear air suspension is controlled to increase, and in the case of the real-time height ratio less than or equal to the first threshold value and greater than or equal to the second threshold value, the inflation speed of the front air suspension and the rear air suspension is controlled to be the same. Wherein, the first threshold value is obtained by further floating a first set value on the basis of the maximum height ratio, and the second threshold value is obtained by further sinking a first set value on the basis of the maximum height ratio.

[0031] It can be understood that the first set value can be 0.02, and the maximum height ratio is the ratio between the maximum height of the front air suspension and the maximum height of the rear air suspension, denoted as P1, then the first threshold value is P1+0.02, and the second threshold value is P1-0.02.

[0032] In the case of the real-time height ratio greater than the first threshold value, it indicates that the inflation speed of the front air suspension air bag is too fast and needs to be reduced, while the inflation speed of the rear air suspension air bag is too slow and needs to be increased, so as to ensure that the real-time height of the front and rear air suspension remains consistent.

[0033] In some embodiments, the height of the front and rear air suspension is adjusted by targeting the real-time height ratio equal to the maximum height ratio, further including: In the case that the real-time height ratio is less than the second threshold value, the inflation speed of the front air suspension is controlled to increase and the inflation speed of the rear air suspension is controlled to decrease, and in the case that the real-time height ratio is less than or equal to the first threshold value and greater than or equal to the second threshold value, the inflation speeds of the front air suspension and the rear air suspension are controlled to be the same.

[0034] It can be understood that, in the case that the real-time height ratio is less than the second threshold value, it indicates that the inflation speed of the front air suspension bag is too slow and needs to be increased, and the inflation speed of the rear air suspension bag is too fast and needs to be decreased, so as to ensure that the real-time heights of the front and rear air suspensions are consistent.

[0035] In some embodiments, the height of the front and rear air suspensions is adjusted with the ratio of the first difference value and the second difference value being equal to the maximum height ratio of the front and rear air suspensions as a target, comprising: In the case that the ratio of the first difference value and the second difference value is greater than a third threshold value, the inflation speed of the front air suspension is controlled to increase and the inflation speed of the rear air suspension is controlled to decrease, and in the case that the ratio of the first difference value and the second difference value is less than or equal to the third threshold value and greater than or equal to a fourth threshold value, the inflation speeds of the front air suspension and the rear air suspension are controlled to be the same; The third threshold value is obtained by further floating a second set value on the basis of the maximum height ratio, and the fourth threshold value is obtained by further sinking the second set value on the basis of the maximum height ratio.

[0036] It can be understood that the second set value can be the same as or different from the first set value, and in the present embodiment, the second set value is the same as the first set value.

[0037] The second set value can be 0.02, the maximum height ratio is the ratio between the maximum height of the front air suspension and the maximum height of the rear air suspension, denoted as P1, then the third threshold value is P1+0.02 and the fourth threshold value is P1-0.02.

[0038] In the case that the ratio of the first difference value and the second difference value is greater than the third threshold value, it indicates that the inflation speed of the front air suspension is too slow and needs to be controlled to increase, and the inflation speed of the rear air suspension is too fast and needs to be controlled to decrease, so as to ensure that the inflation speeds of the front and rear air suspension bags are consistent, and further ensure that the real-time heights of the front and rear air suspensions are consistent.

[0039] In some embodiments, the height of the front and rear air suspensions is adjusted with the ratio of the first difference value and the second difference value being equal to the maximum height ratio of the front and rear air suspensions as a target, further comprising: In a case where the ratio of the first difference value to the second difference value is less than the fourth threshold value, the inflation speed of the front air suspension is controlled to decrease, and the inflation speed of the rear air suspension is controlled to increase, and in a case where the ratio of the first difference value to the second difference value is less than or equal to the third threshold value and greater than or equal to the fourth threshold value, the inflation speeds of the front air suspension and the rear air suspension are controlled to be the same.

[0040] It can be understood that, in a case where the ratio of the first difference value to the second difference value is less than the fourth threshold value, it indicates that the air bag inflation speed of the front air suspension is too fast, and the inflation speed of the front air suspension needs to be controlled to decrease, and the air bag inflation speed of the rear air suspension is too slow, and the inflation speed of the rear air suspension needs to be controlled to increase, so as to ensure that the air bag inflation speeds of the front and rear air suspensions are kept consistent, and thus the real-time heights of the front and rear air suspensions are kept consistent.

[0041] In some embodiments, determining that the vehicle is lightly loaded based on the air bag pressure of the air suspension comprises: obtaining the axle load corresponding to the light and medium-heavy load critical of the vehicle, and a relationship curve between the axle load data of the vehicle and the air bag pressure of the air suspension, to determine the critical air bag pressure corresponding to the light and medium-heavy load critical of the vehicle; In a case where the actual air bag pressure of the air suspension is less than the critical air bag pressure, it is determined that the vehicle is lightly loaded.

[0042] It can be understood that, the vehicle is driven to the flatly placed axle load instrument, the axle load instrument is used to read the reading of the axle load instrument, the CANaylzer or CANape and the like are used to read the pressure sensor value, the relationship curve between the axle load and the air pressure is fitted according to the reading of the axle load instrument and the air pressure sensor value, and is stored in the controller. The critical air bag pressure can be 0.3 bar, and the actual air bag pressure of the air suspension is less than 0.3 bar, indicating that the vehicle is lightly loaded.

[0043] In some embodiments, determining that the vehicle is medium-heavy loaded based on the air bag pressure of the air suspension comprises: In a case where the actual air bag pressure of the air suspension is greater than or equal to the critical air bag pressure, it is determined that the vehicle is medium-heavy loaded.

[0044] It can be understood that, the critical air bag pressure can be 0.3 bar, and the actual air bag pressure of the air suspension is greater than 0.3 bar, indicating that the vehicle is medium-heavy loaded.

[0045] In some embodiments, the present application provides a front and rear air suspension adjustment method, comprising: calibrating the axle load of the whole vehicle: Drive the vehicle onto the flatly placed axle load gauge. (Each under the axle installed ECAS system (electronic control air suspension system), left and right each one), make sure the vehicle handbrake is loose, and use the wheel clamp to prevent the vehicle from sliding. Use the axle load gauge to read the readings of the axle load gauge, and use devices such as CANaylzer or CANape to read the pressure sensor values.

[0046] From empty to full load, average interval into at least 7 parts (recommended average distribution). Start loading, try to place the weight evenly. Each time to reach a loading point, the ECAS system returns to the normal height, record all the axle load gauge readings and all the air pressure sensor readings.

[0047] According to the axle load gauge readings and air pressure sensor values, fit the relationship curve of axle load and air pressure and store it in the controller.

[0048] Calibrate the overall vehicle height: Drive the vehicle onto the flat road, make sure the vehicle handbrake is loose, and use the wheel clamp to prevent the vehicle from sliding. Through the calibration device, select the axle that needs to be adjusted, click "inflate" or "deflate" to adjust the corresponding air bag height to the required normal height 2.3 respectively. Inflating the front and rear air bags respectively, rising to the highest height H 1max ,H 2max of the front and rear air suspensions, and storing it in the controller.

[0049] When adjusting the suspension height with the remote control, different proportions of control strategies are used for light and heavy loads.

[0050] According to the axle load calibration, when the air bag air pressure is detected to be less than 3bar, the vehicle is in a light load state, and a control strategy with a certain height signal ratio is used. When adjusting the remote control, the height signal ratio H 1max / H 2max of the front and rear air suspensions remains equal, that is, H 1max / H 2max=P1, H1 / H2 should be equal to P1, but in the actual process, the two can not necessarily be completely equal, so a threshold range [P1-0.02, P1+0.02] can be set; when height adjustment is performed, the controller detects that H1 / H2>P1+0.02, indicating that the threshold range has been exceeded, in order to ensure the front and rear suspension adjustment speed, the ECU controls the front suspension inflation speed to slow down (i.e., H1 height adjustment slows down), and the rear suspension inflation speed to speed up (i.e., H2 adjustment speeds up), until H1 / H2 reaches the threshold range of P1, the front and rear suspension inflation speeds become the same, and the front and rear suspensions reach the maximum height at the same time; the controller detects that H1 / H2

[0051] According to the axle load calibration, when it is detected that the air bag pressure is greater than 3 bar, the vehicle is in a medium-heavy load state, and a control strategy with a certain difference ratio of height signals is adopted. When the remote control is adjusted, the difference between the real-time height signals H1 and H2 of the front and rear suspensions and the maximum height H 1max , 2max stored in the controller H1, H2, and the ratio of the maximum height H 1max , 2max is certain. That is, H1 / H2= H 1max / H 2max =P1, and a threshold range [P1-0.02, P1+0.02] is set. When height adjustment is performed, the controller detects that H1 / H2>P1+0.02, in order to ensure the front and rear suspension adjustment speed, the ECU controls the front suspension inflation speed to speed up (i.e., H1 height adjustment speeds up), and the rear suspension inflation speed to slow down (i.e., H2 adjustment slows down), until H1 / H2 reaches the threshold range of P1, the front and rear suspension inflation speeds become the same, and then the front and rear suspensions reach the maximum height at the same time; the controller detects that H1 / H2

[0052] According to the above, the inflation rates of the front and rear suspensions are ensured, so that the front and rear suspension heights are adjusted synchronously, and the required suspension height is reached.

[0053] It should be noted that the adjustment method of the present application is divided into light load adjustment and medium-heavy load adjustment, wherein: In light load adjustment, the front-to-rear height signal ratio is kept within a certain threshold value; In medium-heavy load adjustment, the ratio of the real-time height signal of the front and rear suspensions to the highest height difference value of the suspensions written into the controller and the highest height ratio is within a certain threshold value.

[0054] The method provided by the present application has the following technical effects: 1. By calibrating the axle load and height and storing them in the controller, the dual-proportion control strategy is adopted when the height is adjusted by the remote controller.

[0055] 2. In light load adjustment, the front-to-rear height signal ratio is kept within a certain threshold value.

[0056] 3. In medium-heavy load adjustment, the ratio of the real-time height signal of the front and rear suspensions to the highest height difference value of the suspensions written into the controller and the highest height ratio is within a certain threshold value.

[0057] 4. According to the above, the inflation rates of the front and rear suspensions are ensured, so that the heights of the front and rear suspensions are adjusted synchronously, the required suspension height is achieved, and the support force of the cargo box is improved.

[0058] As shown in the accompanying drawings, Figure 3 The present application also provides a front-to-rear air suspension adjustment device 300, comprising: A first adjustment module 301 is configured to, in the case that the vehicle is determined to be in light load based on the air pressure of the air bag of the air suspension, determine the real-time height ratio of the front and rear air suspensions and the maximum height ratio of the front and rear air suspensions, and adjust the height of the front and rear air suspensions with the target that the real-time height ratio is equal to the maximum height ratio. A second adjustment module 302 is configured to, in the case that the vehicle is determined to be in medium-heavy load based on the air pressure of the air bag of the air suspension, determine the first difference value between the real-time height of the front air suspension and the maximum height of the front air suspension and the second difference value between the real-time height of the rear air suspension and the maximum height of the rear air suspension, and adjust the height of the front and rear air suspensions with the target that the ratio of the first difference value to the second difference value is equal to the maximum height ratio of the front and rear air suspensions.

[0059] The front-to-rear air suspension adjustment device provided by the above embodiment can realize the technical solutions described in the above front-to-rear air suspension adjustment method embodiment, and the principles of the implementation of the above modules or units can be referred to the corresponding content in the above front-to-rear air suspension adjustment method embodiment, which will not be described here.

[0060] As shown in the accompanying drawings, Figure 4As shown, the present application also correspondingly provides an electronic device 400, which can be an electronic control unit (ECU). The electronic device 400 comprises a processor 401 and a memory 402. Figure 4 Only part of the components of the electronic device 400 are shown, but it should be understood that all the shown components are not required to be implemented, and more or less components can be alternatively implemented.

[0061] The memory 402 can be an internal storage unit of the electronic device 400 in some embodiments, such as a hard disk or a memory of the electronic device 400. The memory 402 can also be an external storage device of the electronic device 400 in other embodiments, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc.

[0062] Further, the memory 402 can comprise both an internal storage unit and an external storage device of the electronic device 400. The memory 402 is used to store application software and various data installed in the electronic device 400.

[0063] The processor 401 can be a central processing unit (CPU), a microprocessor or other data processing chip in some embodiments, used to run program codes or process data stored in the memory 402, such as the front and rear air suspension adjustment method in the present application.

[0064] The components 401-402 of the electronic device 400 communicate with each other through a system bus.

[0065] In some embodiments of the present application, when the processor 401 executes the front and rear air suspension adjustment program in the memory 402, the following steps can be implemented: In a case where the air bag air pressure of the air suspension determines that the vehicle is lightly loaded, the real-time height ratio of the front and rear air suspensions, and the maximum height ratio of the front and rear air suspensions are determined, and the height of the front and rear air suspensions is adjusted with the goal that the real-time height ratio is equal to the maximum height ratio. In a case where the air bag air pressure of the air suspension determines that the vehicle is medium or heavy loaded, a first difference between the real-time height of the front air suspension and the maximum height of the front air suspension, and a second difference between the real-time height of the rear air suspension and the maximum height of the rear air suspension are determined, and the height of the front and rear air suspensions is adjusted with the goal that the ratio of the first difference to the second difference is equal to the maximum height ratio of the front and rear air suspensions.

[0066] It should be understood that, in addition to the above functions, the processor 401 can also implement other functions when executing the front-rear air suspension adjustment program in the memory 402. For details, refer to the description of the corresponding method embodiments above.

[0067] Further, the type of the electronic device 400 is not specifically limited in the embodiments of the present application. The electronic device 400 can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, or the like. Exemplary embodiments of the portable electronic device include, but are not limited to, a portable electronic device running an IOS, an android, a microsoft, or other operating system. The portable electronic device described above can also be other portable electronic devices, such as a laptop computer having a touch-sensitive surface (e.g., a touch panel), and the like. It should also be understood that in some other embodiments of the present application, the electronic device 400 can also not be a portable electronic device, but a desktop computer having a touch-sensitive surface (e.g., a touch panel).

[0068] In another aspect, the present application also provides a non-transitory computer readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the front-rear air suspension adjustment method provided by the above method. The method comprises: In the case where the air bag air pressure of the air suspension determines that the vehicle is lightly loaded, the real-time height ratio of the front and rear air suspensions, and the maximum height ratio of the front and rear air suspensions are determined, and the height of the front and rear air suspensions is adjusted with the goal of equalizing the real-time height ratio and the maximum height ratio; In the case where the air bag air pressure of the air suspension determines that the vehicle is medium or heavy loaded, the first difference between the real-time height of the front air suspension and the maximum height of the front air suspension, and the second difference between the real-time height of the rear air suspension and the maximum height of the rear air suspension are determined, and the height of the front and rear air suspensions is adjusted with the goal of equalizing the ratio of the first difference and the second difference to the maximum height ratio of the front and rear air suspensions.

[0069] Those skilled in the art can understand that all or part of the processes of the above-mentioned embodiments can be completed by a computer program instructing relevant hardware. The program can be stored in a computer readable storage medium, such as a magnetic disk, an optical disk, a read-only memory, or a random access memory.

[0070] The front and rear air suspension adjustment method, device, electronic equipment and storage medium provided by the present application are described in detail above, the principles and implementation modes of the present application are described by applying specific examples in this paper, and the above example is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A front and rear air suspension adjustment method, characterized by, Comprising: In the case that the vehicle is determined to be lightly loaded based on the air spring air pressure, determining a real-time height ratio of the front and rear air suspensions, and a maximum height ratio of the front and rear air suspensions, and adjusting the heights of the front and rear air suspensions so that the real-time height ratio is equal to the maximum height ratio; In the case that the vehicle is determined to be medium or heavily loaded based on the air spring air pressure, determining a first difference between the real-time height of the front air suspension and the maximum height of the front air suspension, and a second difference between the real-time height of the rear air suspension and the maximum height of the rear air suspension, and adjusting the heights of the front and rear air suspensions so that the ratio of the first difference to the second difference is equal to the maximum height ratio of the front and rear air suspensions.

2. The front and rear air suspension adjusting method according to claim 1, characterized by, Adjusting the heights of the front and rear air suspensions so that the real-time height ratio is equal to the maximum height ratio, comprising: In the case that the real-time height ratio is greater than a first threshold value, controlling the inflation speed of the front air suspension to decrease, and controlling the inflation speed of the rear air suspension to increase, and in the case that the real-time height ratio is less than or equal to the first threshold value and greater than or equal to a second threshold value, controlling the inflation speeds of the front and rear air suspensions to be the same; Wherein, the first threshold value is obtained by further increasing a first set value based on the maximum height ratio, and the second threshold value is obtained by further decreasing a first set value based on the maximum height ratio.

3. The front and rear air suspension adjusting method according to claim 2, characterized by, Adjusting the heights of the front and rear air suspensions so that the real-time height ratio is equal to the maximum height ratio, further comprising: In the case that the real-time height ratio is less than the second threshold value, controlling the inflation speed of the front air suspension to increase, and controlling the inflation speed of the rear air suspension to decrease, and in the case that the real-time height ratio is less than or equal to the first threshold value and greater than or equal to a second threshold value, controlling the inflation speeds of the front and rear air suspensions to be the same.

4. The front and rear air suspension adjustment method according to claim 1, characterized by, Adjusting the heights of the front and rear air suspensions so that the ratio of the first difference to the second difference is equal to the maximum height ratio of the front and rear air suspensions, comprising: In the case that the ratio of the first difference to the second difference is greater than a third threshold value, controlling the inflation speed of the front air suspension to increase, and controlling the inflation speed of the rear air suspension to decrease, and in the case that the ratio of the first difference to the second difference is less than or equal to the third threshold value and greater than or equal to a fourth threshold value, controlling the inflation speeds of the front and rear air suspensions to be the same; Wherein, the third threshold value is obtained by further increasing a second set value based on the maximum height ratio, and the fourth threshold value is obtained by further decreasing a second set value based on the maximum height ratio.

5. The front and rear air suspension adjustment method according to claim 4, characterized by, Adjusting the heights of the front and rear air suspensions so that the ratio of the first difference to the second difference is equal to the maximum height ratio of the front and rear air suspensions, further comprising: In a case where the ratio of the first difference value to the second difference value is less than the fourth threshold value, the inflation speed of the front air suspension is controlled to decrease, and the inflation speed of the rear air suspension is controlled to increase, and in a case where the ratio of the first difference value to the second difference value is less than or equal to the third threshold value and greater than or equal to the fourth threshold value, the inflation speeds of the front air suspension and the rear air suspension are controlled to be the same.

6. The front and rear air suspension adjustment method according to any one of claims 1 to 5, characterized by, The vehicle is determined to be lightly loaded based on the air bag pressure of the air suspension, comprising: Obtaining the axle load corresponding to the light and medium-heavy load critical of the vehicle, and the relationship curve between the axle load data of the vehicle and the air bag pressure of the air suspension, determining the critical air bag pressure corresponding to the light and medium-heavy load critical of the vehicle; In a case where the actual air bag pressure of the air suspension is less than the critical air bag pressure, the vehicle is determined to be lightly loaded.

7. The front and rear air suspension adjustment method according to claim 6, characterized by, The vehicle is determined to be medium-heavy loaded based on the air bag pressure of the air suspension, comprising: In a case where the actual air bag pressure of the air suspension is greater than or equal to the critical air bag pressure, the vehicle is determined to be medium-heavy loaded.

8. A front and rear air suspension adjusting device characterized by comprising: Comprising: The first adjusting module is configured to, in a case where the vehicle is determined to be lightly loaded based on the air bag pressure of the air suspension, determine the real-time height ratio of the front and rear air suspensions and the maximum height ratio of the front and rear air suspensions, and adjust the heights of the front and rear air suspensions with the target that the real-time height ratio is equal to the maximum height ratio; The second adjusting module is configured to, in a case where the vehicle is determined to be medium-heavy loaded based on the air bag pressure of the air suspension, determine the first difference value between the real-time height of the front air suspension and the maximum height of the front air suspension, and the second difference value between the real-time height of the rear air suspension and the maximum height of the rear air suspension, and adjust the heights of the front and rear air suspensions with the target that the ratio of the first difference value to the second difference value is equal to the maximum height ratio of the front and rear air suspensions.

9. An electronic control unit, characterized by Comprising a memory and a processor, wherein, The memory is configured to store a program; The processor is coupled to the memory and is configured to execute the program stored in the memory to implement the steps of the front and rear air suspension adjusting method according to any one of claims 1 to 7. 10.A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the front and rear air suspension adjusting method according to any one of claims 1 to 7.

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