Suspension adjustment method and system for multi-axle train, multi-axle train and storage medium

Abstract

The present application discloses a suspension adjustment method, system, multi-axle train and storage medium for a multi-axle train, and the technical field to which it belongs is train control technology. The cylinder of the multi-axle train inflates the air spring of the suspension through a preset air circuit. The multi-axle train also includes a target air circuit connected in parallel with the preset air circuit. A normally open electrically controlled one-way valve is provided on the target air circuit. When the electrically controlled one-way valve is disconnected, the target air circuit is blocked. When the electrically controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit. The suspension adjustment method of the multi-axle train includes: obtaining the driving speed and wheel speed of the multi-axle train; calculating the slip rate of each tire according to the driving speed and wheel speed; judging whether the slip rate is within a preset range; if not, controlling the electrically controlled one-way valve to close so that the height of the air spring increases. The present application can improve the lateral stability of the multi-axle train and extend the service life of the tires.

Description

Technical Field

[0001] The present application relates to the field of train control technology, and in particular to a suspension adjustment method and system for a multi-axle train, a multi-axle train and a storage medium. Background Art

[0002] Multi-axle trains are equipped with more tires. When the conditions of the tires and the ground they contact are inconsistent, the adhesion coefficients of the tires will be inconsistent, causing inconsistent adhesion of the left and right tires on the same axle, resulting in poor lateral stability of the multi-axle train and severe tire wear.

[0003] Therefore, how to improve the lateral stability of a multi-axle train and extend the service life of the tires is a technical problem that those skilled in the art currently need to solve. Summary of the invention

[0004] The purpose of the present application is to provide a suspension adjustment method and system for a multi-axle train, a multi-axle train and a storage medium, which can improve the lateral stability of the multi-axle train and extend the service life of the tires.

[0005] In order to solve the above technical problems, the present application provides a suspension adjustment method for a multi-axle train, wherein the cylinder of the multi-axle train inflates the air spring of the suspension through a preset air circuit, and the multi-axle train also includes a target air circuit connected in parallel with the preset air circuit, and a normally open electric-controlled one-way valve is provided on the target air circuit. When the electric-controlled one-way valve is disconnected, the target air circuit is not ventilated, and when the electric-controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit. The suspension adjustment method for the multi-axle train includes:

[0006] Obtaining the running speed and wheel speed of the multi-axle train;

[0007] Calculating the slip rate of each tire according to the vehicle speed and the wheel speed;

[0008] Determining whether the sliding rate is within a preset range;

[0009] If not, the electrically controlled one-way valve is controlled to close so that the height of the gas spring increases.

[0010] Optionally, controlling the electrically controlled one-way valve to close includes:

[0011] The vehicle controller is used to send an inflation instruction to the controller of the air suspension system, so that the controller of the air suspension system controls the electric-controlled one-way valve to close.

[0012] Optionally, calculating the slip rate of each tire according to the vehicle speed and the wheel speed includes:

[0013] Calculating the slip rate and / or the slip ratio of each tire according to the vehicle speed and the wheel speed;

[0014] Accordingly, determining whether the sliding rate is within a preset range includes:

[0015] Determining whether the slip rate is within a first preset range;

[0016] And / or, determining whether the slip ratio is within a second preset range.

[0017] Optionally, controlling the electrically controlled one-way valve to close includes:

[0018] setting the tire whose slip rate is not within the preset range as a target tire;

[0019] Setting the air spring corresponding to the target tire as a target air spring;

[0020] The electrically controlled one-way valve corresponding to the target gas spring is controlled to close.

[0021] Optionally, after controlling the electric-controlled one-way valve to close, the method further includes:

[0022] Determining whether the sliding rate of the tire corresponding to the air spring whose height is adjusted is restored to within the preset range;

[0023] If so, the electrically controlled one-way valve is controlled to be disconnected.

[0024] Optionally, controlling the electrically controlled one-way valve to close includes:

[0025] Determining a target inflation amount of the tire according to the slip rate, and determining an inflation time corresponding to the target inflation amount;

[0026] The electrically controlled one-way valve is controlled to be closed, and the electrically controlled one-way valve is controlled to be disconnected after the inflation time.

[0027] Optionally, determining the inflation time corresponding to the target inflation volume includes:

[0028] determining a gas transmission rate of the target gas path when the electrically controlled one-way valve is closed;

[0029] The inflation time is calculated according to the target inflation volume and the gas transfer rate.

[0030] The present application also provides a suspension adjustment system for a multi-axle train, wherein the cylinder of the multi-axle train inflates the air spring of the suspension through a preset air circuit, the multi-axle train further comprises a target air circuit connected in parallel with the preset air circuit, a normally open electric-controlled one-way valve is arranged on the target air circuit, when the electric-controlled one-way valve is disconnected, the target air circuit is not ventilated, when the electric-controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit, the suspension adjustment system for the multi-axle train comprises:

[0031] A parameter acquisition module, used to acquire the running speed and wheel speed of the multi-axle train;

[0032] a slip rate determination module, configured to calculate a slip rate of each tire according to the vehicle speed and the wheel speed;

[0033] A judging module, used to judge whether the sliding rate is within a preset range;

[0034] The gas spring adjustment module is used to control the electric-controlled one-way valve to close if the sliding rate is not within the preset range, so as to increase the height of the gas spring.

[0035] The present application also provides a storage medium on which a computer program is stored. When the computer program is executed, the steps of the suspension adjustment method for a multi-axle train are implemented.

[0036] The present application also provides a multi-axle train, including a vehicle controller, a cylinder, a tire and a suspension, wherein the cylinder inflates the air spring of the suspension through a preset air circuit, and the multi-axle train also includes a target air circuit connected in parallel with the preset air circuit, and a normally open electrically controlled one-way valve is arranged on the target air circuit. When the electrically controlled one-way valve is disconnected, the target air circuit is blocked, and when the electrically controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit. When the vehicle controller is working, the steps of executing the suspension adjustment method of the above-mentioned multi-axle train are implemented.

[0037] The present application provides a suspension adjustment method for a multi-axle train, wherein the cylinder of the multi-axle train inflates the air spring of the suspension through a preset air circuit, the multi-axle train also includes a target air circuit connected in parallel with the preset air circuit, a normally open electrically controlled one-way valve is provided on the target air circuit, when the electrically controlled one-way valve is disconnected, the target air circuit is blocked, and when the electrically controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit, the suspension adjustment method for the multi-axle train includes: obtaining the driving speed and wheel speed of the multi-axle train; calculating the slip rate of each tire according to the driving speed and the wheel speed; judging whether the slip rate is within a preset range; if not, controlling the electrically controlled one-way valve to close so as to increase the height of the air spring.

[0038] The multi-axle train provided by the present application sets a target air circuit in parallel on the basis of the original preset air circuit, and a normally open electric-controlled one-way valve is set on the target air circuit. When the electric-controlled one-way valve is disconnected, the target air circuit is not ventilated, and when the electric-controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit. When the slip rate of the tire is within the preset range, the cylinder inflates the air spring only through the preset air circuit; when it is detected that the slip rate of the tire is not within the preset range, the present application controls the closing of the electric-controlled one-way valve so that the cylinder inflates the air spring through the preset air circuit and the target air circuit, thereby increasing the height of the air spring. After the height of the air spring increases, the tire load under the air spring increases, and the tire load on the other side of the coaxial axis decreases, reducing the phenomenon of slipping and tire wear caused by the different ground adhesion coefficients of the left and right tires. Therefore, the present application can improve the lateral stability of the multi-axle train and extend the service life of the tire. The present application also provides a suspension adjustment system for a multi-axle train, a storage medium and a multi-axle train, which have the above-mentioned beneficial effects and are not repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A flow chart of a suspension adjustment method for a multi-axle train provided in an embodiment of the present application;

[0041] Figure 2 A mechanical schematic diagram of a gas spring height adjustment provided in an embodiment of the present application;

[0042] Figure 3 A mechanical schematic diagram of the height adjustment of the gas spring when the target gas path is not provided in the embodiment of the present application;

[0043] Figure 4 A control principle diagram of an electrically controlled one-way valve for a multi-axle train provided in an embodiment of the present application;

[0044] Figure 5 A schematic structural diagram of a suspension adjustment system for a multi-axle train provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] See below Figure 1 , Figure 1 A flow chart of a suspension adjustment method for a multi-axle train provided in an embodiment of the present application.

[0047] Specific steps may include:

[0048] S101: Acquire the running speed and wheel speed of the multi-axle train;

[0049] Among them, this embodiment can be applied to the vehicle controller ECU (Electronic Control Unit) of a multi-axle train. The multi-axle train can be a multi-unit, multi-wheel virtual track train. The multi-axle train includes at least 2 units and at least 4 axles.

[0050] The cylinder of the multi-axle train inflates the air spring of the suspension through a preset air circuit. The multi-axle train also includes a target air circuit connected in parallel with the preset air circuit, and a normally open electrically controlled one-way valve is provided on the target air circuit. When the electrically controlled one-way valve is not energized, the electrically controlled one-way valve is in a disconnected state; when the electrically controlled one-way valve is energized, the electrically controlled one-way valve is in a closed state. Specifically, when the electrically controlled one-way valve is disconnected, the target air circuit is not ventilated, and the cylinder inflates the air spring of the suspension only through the preset air circuit; when the electrically controlled one-way valve is closed, the target air circuit is ventilated, and the cylinder inflates the air spring through the preset air circuit and the target air circuit. Specifically, the cylinder inflates the air spring at a constant rate through the preset air circuit to maintain the height of the air spring.

[0051] A multi-axle train may also be provided with a sensor for detecting its own driving speed, and a sensor for detecting the wheel speed may also be provided on each wheel, so as to transmit the driving speed and wheel speed to the vehicle controller.

[0052] S102: Calculating the slip rate of each tire according to the vehicle speed and the wheel speed;

[0053] Among them, after obtaining the driving speed and the wheel speed of each tire, this step calculates the slip rate of each tire according to the driving speed and the wheel speed. The slip rate refers to the ratio of the slip speed at the contact point of the tire to the movement speed of the center of the wheel (i.e., the driving speed). The slip speed at the contact point of the tire can be calculated based on the wheel speed and the wheel size.

[0054] S103: Determine whether the sliding rate is within a preset range; if so, end the process; if not, proceed to S104;

[0055] Among them, after obtaining the slip rate of each tire, this step can compare the slip rate of each tire with the preset range. If the slip rate of a tire is not within the preset range, enter the operation of S104; if the slip rates of all tires are within the preset range, the process can be terminated.

[0056] S104: Control the electrically controlled one-way valve to close so that the height of the gas spring increases.

[0057] If it is detected that the slip rate of the tire is not within the preset range, the electronically controlled one-way valve can be controlled to close so that the cylinder inflates the air spring through the target air path where the electronically controlled one-way valve is located, thereby increasing the height of the air spring.

[0058] As a feasible implementation, the multi-axle train also includes an air suspension system connected to the vehicle controller and the electronically controlled one-way valve respectively. Therefore, in this step, the vehicle controller can send an inflation command to the controller of the air suspension system, so that the controller of the air suspension system controls the closing of the electronically controlled one-way valve according to the inflation command.

[0059] The multi-axle train provided in this embodiment sets a target air circuit in parallel on the basis of the original preset air circuit. A normally open electric-controlled one-way valve is set on the target air circuit. When the electric-controlled one-way valve is disconnected, the target air circuit is blocked. When the electric-controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit. When the slip rate of the tire is within the preset range, the cylinder inflates the air spring only through the preset air circuit; when it is detected that the slip rate of the tire is not within the preset range, this embodiment controls the closing of the electric-controlled one-way valve to allow the cylinder to inflate the air spring through the preset air circuit and the target air circuit, thereby increasing the height of the air spring. After the height of the air spring increases, the tire load under the air spring increases, and the tire load on the other side of the coaxial axis decreases, reducing the phenomenon of slipping and tire wear caused by the different ground adhesion coefficients of the left and right tires. Therefore, this embodiment can improve the lateral stability of the multi-axle train and extend the service life of the tire.

[0060] As for Figure 1 In the further description of the corresponding embodiment, the sliding rate may include a slip rate and / or a slip rate, so whether the electric-controlled one-way valve needs to be controlled to be closed may be determined in the following manner:

[0061] The slip rate of each tire is calculated according to the driving speed and the wheel speed; whether the slip rate is within a first preset range is determined; if so, the electronically controlled one-way valve is controlled to be closed.

[0062] The slip ratio of each tire is calculated according to the driving speed and the wheel speed; whether the slip ratio is within a second preset range is determined; if so, the electronically controlled one-way valve is controlled to be closed.

[0063] If the slip rate is within the first preset range and the slip rate is within the second preset range, it is determined that the slip rate is within the preset range, and at this time, there is no need to control the electric-controlled one-way valve to close; if the slip rate is not within the first preset range or the slip rate is not within the second preset range, it is determined that the slip rate is not within the preset range, and at this time, it is necessary to control the electric-controlled one-way valve to close.

[0064] As for Figure 1 Further introduction to the corresponding embodiment, the electric-controlled one-way valve can be controlled to close in the following manner: the tire whose slip rate is not within the preset range is set as the target tire; the air spring corresponding to the target tire is set as the target air spring; and the electric-controlled one-way valve corresponding to the target air spring is controlled to close. Accordingly, the present embodiment can also set the tire whose slip rate and / or slip rate is not within the preset range as the target tire.

[0065] As for Figure 1 Further introduction to the corresponding embodiment, after controlling the electronically controlled one-way valve to close, the slip rate of the tire can also be continuously detected, specifically, it can be determined whether the slip rate of the tire corresponding to the air spring whose height is adjusted is restored to the preset range; if so, the electronically controlled one-way valve is controlled to be disconnected. As a feasible implementation method, it can be determined whether the tire slip rate is restored to the first preset range and the slip rate is restored to the second preset range; if so, the electronically controlled one-way valve is controlled to be disconnected.

[0066] As for Figure 1 Further introduction to the corresponding embodiment, the closing time of the electronically controlled one-way valve can also be controlled in the following manner, and the specific process is as follows: determine the target inflation amount of the tire according to the slip rate, and determine the inflation time corresponding to the target inflation amount; control the electronically controlled one-way valve to close, and control the electronically controlled one-way valve to disconnect after the inflation time. Accordingly, the process of determining the inflation time includes: determining the gas transmission rate of the target gas path when the electronically controlled one-way valve is closed; and calculating the inflation time according to the target inflation amount and the gas transmission rate.

[0067] The process described in the above embodiment is explained below through an embodiment in actual application.

[0068] The existing passive suspension gas spring only has the function of adjusting the height between the vehicle body and the ground, and it only has three states of adjustment: high, medium and low, and cannot achieve stepless adjustment. The above-mentioned gas spring adjustment function is single, and does not realize the multi-faceted application of gas spring adjustment to optimize the function of the whole vehicle. At present, multi-axle trains have serious problems such as severe tire wear, frequent traction failure, and low traction efficiency in actual applications. In order to solve the above technical problems, this application provides a suspension system adjustment and control solution in the field of virtual rail transit, which can solve the problem of single-sided wheel slippage during rapid acceleration / deceleration of centralized drive rubber-wheeled trains due to the difference in the ground adhesion system of the left and right wheels, or the difference in the weight of the left and right wheels of the train.

[0069] Specifically, this embodiment realizes stepless adjustment of the air spring by adding an electronic control valve. The whole vehicle controls the height of the air spring of each tire of each car section by monitoring the slip rate / slip ratio of the tire to redistribute the vertical force between each tire of each car section and the ground. As the height is increased, the load on the tire under the air spring increases, and the load on the tire on the other side of the coaxial axis decreases. The adhesion of a single tire is increased (or reduced) by increasing and decreasing the vertical force between the tire and the ground.

[0070] See also Figure 2 , Figure 2 A mechanical schematic diagram of a gas spring height adjustment provided in an embodiment of the present application, showing a cylinder, a pressure switch, a pressure reducing valve, an air suspension system ECAS, an electric one-way valve, a pressure sensor, a gas spring on the left, a gas spring on the right, and a height valve. The target gas path where the electric one-way valve is located is connected in parallel to the preset gas path, see Figure 3 , Figure 3 The mechanical principle diagram of the height adjustment of the gas spring when the target gas path is not set is provided in the embodiment of the present application, relative to Figure 3 , Figure 2 The gas path added in is the target gas path.

[0071] Combination Figure 2 and Figure 3 It can be seen that in this embodiment, a target air circuit is added in parallel to each original air spring air circuit, and an electrically controlled one-way valve is added to each parallel target air circuit. The electrically controlled one-way valve is normally open. After the electrically controlled one-way valve is energized, the electrically controlled one-way valve closes to inflate the air spring and increase the height of the air spring.

[0072] The vehicle controller calculates the slip rate or slip ratio by monitoring the vehicle speed and wheel speed. When tire wear occurs, the vehicle controller sends a signal to the ECAS controller, and the ECAS controller energizes the electronically controlled check valve. Figure 4 , Figure 4 A control principle diagram of an electrically controlled one-way valve for a multi-axle train provided in an embodiment of the present application, Figure 4It is shown in the figure that whether the slip rate is normal is detected in the driving state. If the slip rate is normal, the electronically controlled one-way valve is controlled to be disconnected. If the slip rate is abnormal, the electronically controlled one-way valve is controlled to be connected through the ECAS ECU (i.e., ECAS controller) so that the cylinder can inflate the gas spring. Figure 4 It also shows that whether the slip ratio is normal is detected under braking state. If the slip ratio is normal, the electronically controlled one-way valve is controlled to be disconnected. If the slip ratio is abnormal, the electronically controlled one-way valve is controlled to be connected through the ECASECU (i.e., ECAS controller) so that the cylinder can inflate the gas spring.

[0073] In this embodiment, an additional air circuit is connected in parallel to each of the original air spring air circuits, and an electronically controlled one-way valve is added to each of the parallel air circuits. The electronically controlled one-way valve is controlled by the ECAS ECU. The vehicle ECU calculates the slip rate / slip ratio by monitoring the vehicle speed and wheel speed. When the slip rate / slip ratio is abnormal, a signal is given to the ECAS ECU, and the ECAS ECU energizes the electronically controlled one-way valve. The electronically controlled one-way valve is closed to inflate the air spring, and the height of the air spring increases. The load of the section of the carriage is redistributed among the tires, and the tire that slips / slips obtains a heavier load, and the vertical contact force between the tire and the ground increases, and the adhesion of the tire increases. After the slip rate / slip ratio is normal, the electronically controlled one-way valve is disconnected to stop inflation. In this embodiment, the load of the tire under the air spring is increased by increasing the height of the air spring, so as to increase the adhesion of the tire to the ground. At the same time, the load of the tire on the other side of the coaxial axis is reduced, which significantly reduces the slip and tire wear caused by the different ground adhesion coefficients of the left and right tires, improves the service life of the tire, and improves the lateral stability of the vehicle.

[0074] See also Figure 5 , Figure 5 A structural schematic diagram of a suspension adjustment system for a multi-axle train provided in an embodiment of the present application, wherein the cylinder of the multi-axle train inflates the air spring of the suspension through a preset air circuit, the multi-axle train further comprises a target air circuit connected in parallel with the preset air circuit, a normally open electrically controlled one-way valve is provided on the target air circuit, when the electrically controlled one-way valve is disconnected, the target air circuit is not ventilated, when the electrically controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit, the suspension adjustment system for the multi-axle train comprises:

[0075] The parameter acquisition module 501 is used to acquire the running speed and wheel speed of the multi-axle train;

[0076] a slip rate determination module 502, configured to calculate the slip rate of each tire according to the vehicle speed and the wheel speed;

[0077] A determination module 503 is used to determine whether the sliding rate is within a preset range;

[0078] The gas spring adjustment module 504 is used to control the electric-controlled one-way valve to close if the sliding rate is not within the preset range, so as to increase the height of the gas spring.

[0079] The multi-axle train provided in this embodiment sets a target air circuit in parallel on the basis of the original preset air circuit. A normally open electric-controlled one-way valve is set on the target air circuit. When the electric-controlled one-way valve is disconnected, the target air circuit is blocked. When the electric-controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit. When the slip rate of the tire is within the preset range, the cylinder inflates the air spring only through the preset air circuit; when it is detected that the slip rate of the tire is not within the preset range, this embodiment controls the closing of the electric-controlled one-way valve to allow the cylinder to inflate the air spring through the preset air circuit and the target air circuit, thereby increasing the height of the air spring. After the height of the air spring increases, the tire load under the air spring increases, and the tire load on the other side of the coaxial axis decreases, reducing the phenomenon of slipping and tire wear caused by the different ground adhesion coefficients of the left and right tires. Therefore, this embodiment can improve the lateral stability of the multi-axle train and extend the service life of the tire.

[0080] Furthermore, the process of the gas spring adjustment module 504 controlling the closing of the electronically controlled one-way valve includes: using the vehicle controller to send an inflation instruction to the controller of the air suspension system, so that the controller of the air suspension system controls the closing of the electronically controlled one-way valve.

[0081] Further, the process of the slip rate determination module 502 calculating the slip rate of each tire according to the driving speed and the wheel speed includes: calculating the slip rate and / or the slip rate of each tire according to the driving speed and the wheel speed;

[0082] Accordingly, the process of the judging module 503 judging whether the slip rate is within the preset range includes: judging whether the slip rate is within a first preset range; and / or judging whether the slip rate is within a second preset range.

[0083] Furthermore, the process of the air spring adjustment module 504 controlling the closing of the electrically controlled one-way valve includes: setting the tire whose slip rate is not within the preset range as the target tire; setting the air spring corresponding to the target tire as the target air spring; and controlling the closing of the electrically controlled one-way valve corresponding to the target air spring.

[0084] Furthermore, the air spring adjustment module 504 is also used to determine whether the slip rate of the tire corresponding to the air spring with adjusted height is restored to the preset range after controlling the electric-controlled one-way valve to close; if so, control the electric-controlled one-way valve to disconnect.

[0085] Furthermore, the process of the air spring adjustment module 504 controlling the closing of the electronically controlled one-way valve includes: determining the target inflation volume of the tire according to the slip rate, and determining the inflation time corresponding to the target inflation volume; controlling the closing of the electronically controlled one-way valve, and controlling the disconnection of the electronically controlled one-way valve after the inflation time.

[0086] Furthermore, the process by which the gas spring adjustment module 504 determines the inflation time corresponding to the target inflation volume includes: determining the gas transmission rate of the target gas circuit when the electrically controlled one-way valve is closed; and calculating the inflation time based on the target inflation volume and the gas transmission rate.

[0087] Since the embodiments of the system part correspond to the embodiments of the method part, please refer to the description of the embodiments of the method part for the embodiments of the system part, which will not be repeated here.

[0088] The present application also provides a storage medium on which a computer program is stored, and when the computer program is executed, the steps provided in the above embodiment can be implemented. The storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0089] The present application also provides a multi-axle train, including a vehicle controller, a cylinder, a tire and a suspension, wherein the cylinder inflates the air spring of the suspension through a preset air circuit, and the multi-axle train also includes a target air circuit connected in parallel with the preset air circuit, and a normally open electrically controlled one-way valve is arranged on the target air circuit. When the electrically controlled one-way valve is disconnected, the target air circuit is blocked, and when the electrically controlled one-way valve is closed, the cylinder inflates the air spring through the target air circuit. When the vehicle controller is working, the steps provided in the above embodiment are implemented.

[0090] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

[0091] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A suspension adjustment method for a multi-axle train, wherein the cylinder of the multi-axle train inflates the air spring of the suspension through a preset air path, characterized in that: The multi-axle train further includes a target air circuit connected in parallel with the preset air circuit, an electrically controlled one-way valve is provided on the target air circuit, when the electrically controlled one-way valve is not energized, the target air circuit is not ventilated, when the electrically controlled one-way valve is energized, the cylinder inflates the gas spring through the target air circuit, and the suspension adjustment method of the multi-axle train includes: Obtaining the running speed and wheel speed of the multi-axle train; Calculating the slip rate of each tire according to the vehicle speed and the wheel speed; Determining whether the sliding rate is within a preset range; If not, the electrically controlled one-way valve is controlled to be energized so that the height of the gas spring increases; Among them, when the slip rate of the tire is within a preset range, the cylinder inflates the air spring only through the preset air path; when the slip rate of the tire is not within the preset range, the cylinder inflates the air spring through the preset air path and the target air path; the cylinder inflates the air spring at a constant rate through the preset air path.

2. The suspension adjustment method for a multi-axle train according to claim 1, characterized in that: Controlling the electric-controlled one-way valve to be energized includes: The vehicle controller is used to send an inflation instruction to the controller of the air suspension system, so that the controller of the air suspension system controls the electric-controlled one-way valve to be energized.

3. The suspension adjustment method for a multi-axle train according to claim 1, characterized in that: Calculating the slip rate of each tire according to the vehicle speed and the wheel speed, including: Calculating the slip rate and / or the slip ratio of each tire according to the vehicle speed and the wheel speed; Accordingly, determining whether the sliding rate is within a preset range includes: Determining whether the slip rate is within a first preset range; And / or, determining whether the slip ratio is within a second preset range.

4. The suspension adjustment method for a multi-axle train according to claim 1, characterized in that: Controlling the electric-controlled one-way valve to be energized includes: setting the tire whose slip rate is not within the preset range as a target tire; Setting the air spring corresponding to the target tire as a target air spring; The electrically controlled one-way valve corresponding to the target gas spring is controlled to be energized.

5. The suspension adjustment method for a multi-axle train according to claim 1, characterized in that: After controlling the electric-controlled one-way valve to be energized, the method further comprises: Determining whether the sliding rate of the tire corresponding to the air spring whose height is adjusted is restored to within the preset range; If so, the electrically controlled one-way valve is controlled to be de-energized.

6. The suspension adjustment method for a multi-axle train according to claim 1, characterized in that: Controlling the electric-controlled one-way valve to be energized includes: Determining a target inflation amount of the tire according to the slip rate, and determining an inflation time corresponding to the target inflation amount; The electrically controlled one-way valve is controlled to be energized, and the electrically controlled one-way valve is controlled to be de-energized after the inflation time.

7. The suspension adjustment method for a multi-axle train according to claim 6, characterized in that: Determining the inflation time corresponding to the target inflation volume includes: determining a gas transmission rate of the target gas path when the electrically controlled one-way valve is energized; The inflation time is calculated according to the target inflation volume and the gas transfer rate.

8. A suspension adjustment system for a multi-axle train, wherein the cylinder of the multi-axle train inflates the air spring of the suspension through a preset air path, characterized in that: The multi-axle train further includes a target air circuit connected in parallel with the preset air circuit, an electrically controlled one-way valve is provided on the target air circuit, when the electrically controlled one-way valve is not energized, the target air circuit is not ventilated, when the electrically controlled one-way valve is energized, the cylinder inflates the gas spring through the target air circuit, the suspension adjustment system of the multi-axle train includes: A parameter acquisition module, used to acquire the running speed and wheel speed of the multi-axle train; a slip rate determination module, configured to calculate a slip rate of each tire according to the vehicle speed and the wheel speed; A judging module, used to judge whether the sliding rate is within a preset range; A gas spring adjustment module, used for controlling the electric-controlled one-way valve to be energized if the sliding rate is not within the preset range, so as to increase the height of the gas spring; Among them, when the slip rate of the tire is within a preset range, the cylinder inflates the air spring only through the preset air path; when the slip rate of the tire is not within the preset range, the cylinder inflates the air spring through the preset air path and the target air path; the cylinder inflates the air spring at a constant rate through the preset air path.

9. A multi-axle train, comprising a vehicle controller, a cylinder, a tire and a suspension, wherein the cylinder inflates the air spring of the suspension through a preset air path, characterized in that: The multi-axle train also includes a target air circuit connected in parallel with the preset air circuit, and an electrically controlled one-way valve is arranged on the target air circuit. When the electrically controlled one-way valve is not energized, the target air circuit is blocked. When the electrically controlled one-way valve is energized, the cylinder inflates the air spring through the target air circuit. When the vehicle controller is working, the steps of the suspension adjustment method for the multi-axle train as described in any one of claims 1 to 7 are implemented.

10. A storage medium, characterized in that: The storage medium stores computer executable instructions, and when the computer executable instructions are loaded and executed by the processor, the steps of the suspension adjustment method for a multi-axle train as claimed in any one of claims 1 to 7 are implemented.

Images