Magnetic levitation test track excitation simulation and loading method, system, device, equipment and medium
By using segmented linear simulation and coordinated action of multiple test benches, and by utilizing overlapping structures to transmit track excitation, the problem of track excitation accuracy deviation in maglev train testing was solved, achieving test results that are closer to reality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CRRC QINGDAO SIFANG CO LTD
- Filing Date
- 2026-03-25
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, the simulation and loading of track excitation in real-time hybrid tests of maglev trains have accuracy deviations, making it difficult to accurately reproduce actual operation.
By using a segmented straight line to replace the curve, and coordinating the actions of N independent test benches, the actual deformation data of the target track is obtained, and the action of the drive device is controlled so that the test bench simulates the track excitation of the target track. This excitation is then transmitted to the vehicle running parts through the overlapping structure, simulating the stress on the suspension frame during actual vehicle operation.
This improved the accuracy and realism of the maglev test track excitation, ensuring that the simulated track excitation is closer to the actual operating conditions, thus enhancing the precision and authenticity of the test.
Smart Images
Figure CN122108647A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rail vehicle testing technology, and more specifically, to a method, system, device, equipment, and medium for simulating and loading excitation on a maglev test track. Background Technology
[0002] In the development of maglev trains, the vehicle-track (i.e., vehicle and track) coupled vibration performance is key to evaluating its operational safety, stability and ride comfort.
[0003] Currently, real-time hybrid tests are used to reproduce the track excitation experienced by maglev trains in actual operation. However, in related technologies, the simulation of track deformation acting on the vehicle model in real-time hybrid tests by establishing track and vehicle models results in certain deviations compared to actual applications.
[0004] Therefore, improving the accuracy of the excitation realization of the maglev test track is an approximate reproduction problem that needs to be solved. Summary of the Invention
[0005] In view of this, the purpose of the present invention is to provide a method for simulating and loading excitation on a maglev test track, so as to improve the accuracy of excitation realization on a maglev test track.
[0006] Another objective of this invention is to provide a maglev test track excitation simulation and loading system for implementing the above-mentioned maglev test track excitation simulation and loading method, so as to improve the accuracy of maglev test track excitation implementation.
[0007] Another objective of this invention is to provide a maglev test track excitation simulation and loading device, a maglev test track excitation simulation and loading equipment, and a computer-readable storage medium, respectively corresponding to the above-mentioned maglev test track excitation simulation and loading method, so as to improve the accuracy of maglev test track excitation.
[0008] To achieve the above objectives, the present invention provides the following technical solution:
[0009] A method for simulating and loading excitation on a maglev test track is provided, which is applied to a maglev test track excitation simulation and loading system. The maglev test track excitation simulation and loading system includes N test benches arranged in sequence, N sets of drive devices, and a test vehicle. Each test bench is driven by a set of drive devices. The test vehicle includes N-1 vehicle running parts. Any two adjacent vehicle running parts are connected by an overlapping structure. Each overlapping structure is located at a preset position on a test bench. N is a positive integer greater than or equal to 2.
[0010] The excitation simulation and loading method for the magnetic levitation test track includes:
[0011] Obtain the actual deformation data of the target trajectory;
[0012] Based on the actual deformation data, the driving displacement of each of the test benches is obtained;
[0013] Based on the driving displacement of each test bench, the operation of each set of driving devices is controlled so that each set of driving devices drives the corresponding test bench to reach the corresponding driving displacement, so that all the test benches cooperate to simulate the track excitation of the target track, and the track excitation is transmitted to the vehicle running parts through the overlapping structure.
[0014] Optionally, the actual deformation data of the target orbit is obtained, including:
[0015] Obtain the actual bridge span deformation data of the target track, and obtain the track irregularity data of the target track;
[0016] Based on the actual deformation data, the driving displacement of each of the test benches is obtained, including:
[0017] Based on the actual bridge span deformation data, the first driving displacement of each test bench is obtained, and based on the track irregularity data, the second driving displacement of each test bench is obtained. The first driving displacement and the second driving displacement are superimposed to obtain the driving displacement of each test bench.
[0018] Optionally, based on the actual bridge span deformation data, the first driving displacement of each of the test benches is obtained, including:
[0019] The docking point of any two adjacent test benches and the outermost endpoints of the two outermost test benches are taken as response points.
[0020] Based on the actual bridge span deformation data, the dynamic displacement of each response point is obtained;
[0021] The first driving displacement of each test bench is obtained based on the dynamic displacement of each response point.
[0022] Optionally, the first driving displacement of each of the test benches is obtained based on the dynamic displacement of each of the response points, including:
[0023] The dynamic displacement of each response point is decomposed to obtain the vertical displacement, head nod displacement and lateral roll displacement of each response point.
[0024] The vertical displacement, nodding displacement, and lateral roll displacement of each of the response points are obtained.
[0025] Optionally, based on the track irregularity data, the second driving displacement of each of the test benches is obtained, including:
[0026] Based on the preset operating speed of the vehicle's running components, the track irregularity data is converted into a displacement excitation signal that varies with time, and the displacement excitation signal is the second driving displacement.
[0027] Optionally, each of the aforementioned drive units includes at least two drive mechanisms to control the operation of each set of drive units, including:
[0028] Control all the drive mechanisms corresponding to each test bench to operate synchronously, so that each test bench reaches the corresponding drive displacement.
[0029] Optionally, each of the overlapping structures is located at the center of one of the test benches, and the track excitation is transmitted to the overlapping structure through the center of the test bench.
[0030] A magnetic levitation test track excitation simulation and loading system includes:
[0031] N test benches are set up sequentially along a preset direction to simulate the target track; N is a positive integer greater than or equal to 2.
[0032] N sets of driving devices, each of the test benches is driven by one set of the driving devices;
[0033] The test vehicle includes N-1 vehicle running parts, any two adjacent vehicle running parts are connected by an overlapping structure, and each overlapping structure is located at a preset position on a test bench;
[0034] A control device, connected to N sets of the aforementioned drive devices, is used to implement the magnetic levitation vehicle vibration test track excitation simulation method according to any one of claims 1-9.
[0035] Optionally, each of the overlapping structures is located at the center of one of the test benches.
[0036] Optionally, the test bench includes a guide rail surface and a suspension rail surface; the vehicle running components include a guide electromagnet and a suspension electromagnet.
[0037] A magnetic levitation test track excitation simulation and loading device is applied to a magnetic levitation test track excitation simulation and loading system. The magnetic levitation test track excitation simulation and loading system includes N test benches arranged in sequence, N sets of drive devices and test vehicles. Each test bench is driven by a set of drive devices. The test vehicle includes N-1 vehicle running parts. Any two adjacent vehicle running parts are connected by an overlapping structure. Each overlapping structure is located at a preset position on one of the test benches. N is a positive integer greater than or equal to 2.
[0038] The maglev test track excitation simulation and loading device includes:
[0039] The deformation data acquisition module is used to acquire the actual deformation data of the target track;
[0040] The drive displacement calculation module is used to obtain the drive displacement of each of the test benches based on the actual deformation data.
[0041] The drive module is used to control the operation of each set of drive devices according to the drive displacement of each test bench, so that each set of drive devices drives the corresponding test bench to reach the corresponding drive displacement, so that all the test benches cooperate to simulate the track excitation of the target track, and the track excitation is transmitted to the vehicle running parts through the overlapping structure.
[0042] A magnetic levitation test track excitation simulation and loading device includes:
[0043] Memory, used to store computer programs;
[0044] A processor is used to implement the steps of the above-described magnetic levitation test track excitation simulation and loading method when executing the computer program.
[0045] A computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the above-described magnetic levitation test track excitation simulation and loading method.
[0046] The magnetic levitation test track excitation simulation and loading method provided by this invention has the following beneficial effects:
[0047] By employing a segmented straight line to replace the curve method, and utilizing the coordinated actions of N independent test benches, the target track is simulated. The actual deformation data of the target track is converted into the driving displacement of each test bench. By controlling the action of the driving device, each test bench achieves the required driving displacement, thereby simulating the actual deformation of the target track, that is, simulating the track excitation. In addition, since each overlapping structure of the test vehicle is located at a preset position on a test bench, when each test bench moves according to the driving displacement under the action of the corresponding driving device, the track excitation is applied to the overlapping structure. The track excitation is transmitted to the vehicle running parts through the overlapping structure, and then to the test vehicle, which can simulate the stress situation of the suspension frame load-bearing structure during actual vehicle operation.
[0048] Therefore, this invention utilizes the actual deformation data of the target track and coordinates the actions of multiple test benches to simulate the actual deformation of the target track, reproducing the actual operating environment and improving the realism and accuracy of the test. At the same time, by using the overlapping structure of the vehicle's running gear as the force transmission path, the track excitation is transmitted to the vehicle's running gear through the overlapping structure. This fully considers the structural characteristics of the maglev vehicle's suspension frame, ensuring that the simulated track excitation can be transmitted to the maglev vehicle in the most realistic way, avoiding deviations between the simulated track excitation and the actual vehicle operation, and further improving the realism and accuracy of the test.
[0049] The maglev test track excitation simulation and loading system provided by the present invention is used to implement the above-mentioned maglev test track excitation simulation and loading method, and has at least the beneficial effects of the above-mentioned maglev test track excitation simulation and loading method.
[0050] The magnetic levitation test track excitation simulation and loading device provided by the present invention corresponds to the above-mentioned magnetic levitation test track excitation simulation and loading method, and has at least the beneficial effects of the above-mentioned magnetic levitation test track excitation simulation and loading method.
[0051] The magnetic levitation test track excitation simulation and loading device provided by the present invention corresponds to the above-mentioned magnetic levitation test track excitation simulation and loading method, and has at least the beneficial effects of the above-mentioned magnetic levitation test track excitation simulation and loading method.
[0052] The computer-readable storage medium provided by the present invention corresponds to the above-mentioned maglev test track excitation simulation and loading method, and has at least the beneficial effects of the above-mentioned maglev test track excitation simulation and loading method. Attached Figure Description
[0053] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0054] Figure 1 A flowchart illustrating the excitation simulation and loading method for a magnetic levitation test track provided in a specific embodiment of the present invention;
[0055] Figure 2 This is a schematic diagram of the test vehicle located on the test bench;
[0056] Figure 3 This is a schematic diagram of the structure of a single test bench;
[0057] Figure 4 A schematic diagram of the overlapping structure of the vehicle's running gear;
[0058] Figure 5 This is a schematic diagram showing the relative positions of the vehicle's running gear and the test bench;
[0059] Figure 6 A schematic diagram of the test bench layout for the maglev test track excitation simulation and loading system;
[0060] Figure 7 A schematic diagram of the bridge span deformation simulation on each test bench;
[0061] Figure 8 This is a structural block diagram of the magnetic levitation test track excitation simulation and loading device provided in a specific embodiment of the present invention;
[0062] Figure 9 The diagram shows the structure of the magnetic levitation test track excitation simulation and loading device provided in a specific embodiment of the present invention.
[0063] Figure label:
[0064] 1-Test bench; 11-Response point; 12-Guide track surface; 13-Suspension track surface; 2-Test vehicle; 21-Vehicle running parts; 211-Overlapping structure; 31-Deformation data acquisition module; 32-Driving displacement calculation module; 33-Driving module; 41-Memory; 42-Processor. Detailed Implementation
[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0066] The core of this invention is to provide a method for simulating and loading excitation on a maglev test track, thereby improving the accuracy of excitation implementation on the maglev test track. Another core aspect of this invention is to provide a system for simulating and loading excitation on a maglev test track to implement the aforementioned method, thereby improving the accuracy of excitation implementation on the maglev test track. Yet another core aspect of this invention is to provide a device, equipment, and computer-readable storage medium for simulating and loading excitation on a maglev test track, each corresponding to the aforementioned method, thereby improving the accuracy of excitation implementation on the maglev test track.
[0067] Please refer to Figure 1 This invention provides a method for simulating and loading excitation on a maglev test track, applicable to a maglev test track excitation simulation and loading system (such as...). Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown), the maglev test track excitation simulation and loading system includes N test benches 1 arranged sequentially, N sets of drive devices, and test vehicles. Each test bench 1 is driven by a corresponding set of drive devices. The test vehicle includes N-1 vehicle running parts 2. Any two adjacent vehicle running parts 2 are connected by an overlapping structure 21. Each overlapping structure 21 is located at a preset position on a test bench 1, and N is a positive integer greater than or equal to 2. The maglev test track excitation simulation and loading method includes steps S1 to S3:
[0068] S1: Obtain the actual deformation data of the target track;
[0069] S2: Based on the actual deformation data of the target track, obtain the driving displacement of each test bench 1;
[0070] S3: Based on the driving displacement of each test bench 1, control the action of each set of driving devices so that each set of driving devices drives the corresponding test bench 1 to achieve the corresponding driving displacement, so that all test benches 1 cooperate to simulate the track excitation of the target track. The track excitation is transmitted to the vehicle running parts 2 through the overlapping structure 21.
[0071] In other words, the embodiments of the present invention use a segmented straight line to replace the curve, and use N independent test benches 1 to coordinate their actions to simulate the target track. The actual deformation data of the target track is converted into the driving displacement of each test bench 1, and the driving device is controlled to make each test bench 1 achieve the required driving displacement, thereby simulating the actual deformation of the target track, that is, simulating the track excitation. In addition, since each overlapping structure 21 of the test vehicle is located at a preset position of a test bench 1, when each test bench 1 moves according to the driving displacement under the action of the corresponding driving device, the track excitation is applied to the overlapping structure 21. The track excitation is transmitted to the vehicle running parts 2 through the overlapping structure 21, and then to the test vehicle, which can simulate the stress situation of the suspension frame load-bearing structure during the actual operation of the vehicle.
[0072] Therefore, this embodiment of the invention utilizes the actual deformation data of the target track and coordinates the actions of multiple test benches 1 to simulate the actual deformation of the target track, reproducing the actual operating environment and improving the realism and accuracy of the test. At the same time, by using the overlapping structure 21 of the vehicle running parts 2 as the force transmission path, the track excitation is transmitted to the vehicle running parts 2 via the overlapping structure 21. This fully considers the structural characteristics of the suspension frame of the maglev vehicle, ensuring that the simulated track excitation can be transmitted to the maglev vehicle in the most realistic way, avoiding deviations between the simulated track excitation and the actual operation of the vehicle, and further improving the realism and accuracy of the test.
[0073] It should be noted that this embodiment does not limit the specific method for obtaining the actual deformation data of the target track, as long as the actual deformation data of the target track can be obtained.
[0074] In some embodiments, obtaining the actual deformation data of the target orbit includes:
[0075] Obtain the actual bridge span deformation data of the target track, and obtain the track irregularity data of the target track;
[0076] Based on the actual deformation data, the driving displacements of each test bench 1 are obtained, including:
[0077] Based on the actual bridge span deformation data, the first driving displacement of each test rig 1 is obtained, and based on the track irregularity data, the second driving displacement of each test rig 1 is obtained. The first driving displacement and the second driving displacement are superimposed to obtain the driving displacement of each test rig 1.
[0078] In other words, in this embodiment, the two main sources of track excitation, the actual bridge span deformation data and track irregularity data of the target track, are superimposed and simulated to more completely simulate the excitation experienced by the maglev vehicle during actual operation. This makes the track excitation closer to reality and more completely reproduces the actual operating environment, further improving the realism and accuracy of the experiment.
[0079] Furthermore, such as Figure 6 and Figure 7 As shown, in some embodiments, the first driving displacement of each test rig 1 is obtained based on actual bridge span deformation data, including:
[0080] The docking point of any two adjacent test benches 1 and the outermost endpoints of the two outermost test benches 1 are taken as response points 11;
[0081] Based on the actual bridge span deformation data, the dynamic displacement of each response point 11 is obtained;
[0082] The first driving displacement of each test bench 1 is obtained based on the dynamic displacement of each response point 11.
[0083] In other words, this embodiment extracts several response points 11 and uses these response points 11 as fitting points of the test bench 1. Then, it fits the displacement changes of each response point 11 and finally obtains the first driving displacement of the test bench 1. In this embodiment, the docking point of any two adjacent test benches 1 and the outermost endpoints of the two outermost test benches 1 are used as response points 11, which is beneficial to obtain a more accurate first driving displacement of each test bench 1.
[0084] It should be noted that this embodiment does not limit the specific method of obtaining the dynamic displacement of each response point 11 based on the actual bridge span deformation data. For example, a numerical bridge span deformation model can be obtained through dynamic simulation calculation based on the actual bridge span deformation data. Based on the position information of each response point 11, the displacement information of each response point 11 over time can be obtained. That is, the dynamic displacement of each response point 11 refers to the displacement sequence of each response point 11 over time. Since the response point 11 is the endpoint of the corresponding test platform 1, the first driving displacement of the corresponding test platform 1 can be obtained by combining the physical dimensions of the test platform 1 and the displacement change information of the corresponding response point 11. That is, the first driving displacement of each test platform 1 is also a dynamic displacement sequence over time. Therefore, the simulation of the deformation of the track bridge span can be realized by driving each test platform 1 through the driving device to realize the driving displacement (including the first driving displacement).
[0085] Furthermore, in some embodiments, the first driving displacement of each test bench 1 is obtained based on the dynamic displacement of each response point 11, including:
[0086] The dynamic displacement of each response point 11 is decomposed to obtain the vertical displacement, head nod displacement and lateral roll displacement of each response point 11.
[0087] Based on the vertical displacement, head displacement, and lateral roll displacement of each response point 11, the vertical displacement, head displacement, and lateral roll displacement of each test bench 1 are obtained.
[0088] In other words, this embodiment decomposes the displacement of each response point 11 to obtain the vertical displacement, nodding displacement, and lateral roll displacement of each response point 11. It can be understood that the vertical displacement, nodding displacement, and lateral roll displacement of each response point 11 are displacement sequences that change over time. Based on the vertical displacement, nodding displacement, and lateral roll displacement of each response point 11, the required vertical displacement, nodding displacement, and lateral roll displacement of each test bench 1 are obtained. Then, by controlling the drive device, the drive device can drive the corresponding test bench 1 to achieve its corresponding vertical displacement, nodding displacement, and lateral roll displacement. This scheme decomposes the displacement to obtain the vertical displacement, nodding displacement, and lateral roll displacement of each test bench 1, facilitating the driving of each test bench 1 to achieve the required first drive displacement response. It can be understood that, correspondingly, the drive device may include three sub-drive devices for respectively achieving vertical displacement, nodding displacement, and lateral roll displacement.
[0089] It should be noted that the above embodiments do not limit the specific implementation method of obtaining the second driving displacement of each test bench 1 based on the track irregularity data, as long as the second driving displacement of each test bench 1 can be obtained based on the track irregularity data.
[0090] In some embodiments, the second driving displacement of each test bench 1 is obtained based on track irregularity data, including:
[0091] Based on the preset running speed of the vehicle running component 2, the track irregularity data is converted into a displacement excitation signal that varies with time, and the displacement excitation signal is the second driving displacement.
[0092] In other words, based on the preset running speed of the vehicle running component 2, the track irregularity in the mileage domain is converted into a track irregularity excitation signal in the time domain through the relationship between displacement, speed and time, thereby obtaining the second driving displacement of each test bench 1.
[0093] It is understandable that by superimposing the time-domain track irregularity excitation signal with the corresponding first driving displacement, the driving displacement of each test bench 1 can be obtained. Then, the driving device can be controlled to operate according to the driving displacement requirement.
[0094] It should be noted that the embodiments of the present invention do not limit the specific methods for obtaining the actual bridge span deformation data and the track irregularity data of the target track. As long as the actual bridge span deformation data and the track irregularity data of the target track can be obtained, relevant technologies can be referred to, and will not be elaborated here.
[0095] In addition, such as Figure 3 As shown, in some embodiments, the test bench 1 includes a guide track surface 12 and a suspended track surface 13; controlling the operation of each set of drive devices to drive the corresponding test bench 1 to achieve the corresponding drive displacement, so that all test benches 1 cooperate to simulate the track excitation of the target track, including:
[0096] Control the actions of each set of drive devices to drive the corresponding test bench 1 to achieve the corresponding drive displacement, so that all test benches 1 cooperate to simulate the track guide surface excitation and track suspension surface excitation of the target track.
[0097] In other words, in this embodiment, the track excitation of the target track is reflected in the guide track surface 12 and the suspension track surface 13 of the test bench 1 and output. The corresponding test bench 1 is driven by the driving device to achieve the required displacement of each test bench 1, so that all test benches 1 cooperate to simulate the track guide surface excitation and track suspension surface excitation of the target track.
[0098] Furthermore, in some embodiments, the vehicle running gear 2 further includes a guide electromagnet and a levitation electromagnet; after the track excitation is transmitted to the vehicle running gear 2 through the overlapping structure 21, it also includes:
[0099] The magnetic force of the guide electromagnet and the levitation electromagnet is adjusted according to the track excitation.
[0100] In other words, in this embodiment, after the track excitation is transmitted to the vehicle running component 2 through the overlapping structure 21, the magnetic force of the guide electromagnet and the suspension electromagnet is adjusted according to the track excitation. In this way, it is possible to determine the relationship between the magnetic force of the guide electromagnet and the suspension electromagnet and the vibration of the vehicle running component 2 under track excitation, which is helpful in determining the appropriate magnetic force of the guide electromagnet and the suspension electromagnet.
[0101] In addition, to facilitate the driving of the test bench 1 to achieve the corresponding driving displacement, in some embodiments, each driving device includes at least two driving mechanisms to control the operation of each driving device, including:
[0102] Control all drive mechanisms corresponding to each test bench 1 to move synchronously, so that each test bench 1 reaches the corresponding drive displacement.
[0103] In other words, in this embodiment, each test bench 1 has at least two driving mechanisms. Through the coordinated action of multiple driving mechanisms, the driving displacement corresponding to each test bench 1 is realized. Thus, the driving displacement of each test bench 1 can be decomposed to obtain sub-displacements in multiple directions. Multiple driving mechanisms can then be used to realize the sub-displacements in multiple directions, ultimately realizing the total driving displacement corresponding to each test bench 1. For example, each driving device may include three driving mechanisms. The three driving mechanisms are used to realize the vertical displacement, nodding displacement, and side roll displacement of the corresponding test bench 1, respectively. This scheme makes the movement of each driving mechanism relatively simple, which facilitates the realization of the driving displacement of each test bench 1.
[0104] In addition, in order to more accurately simulate the stress mode of the suspension frame load-bearing structure during actual vehicle operation, in some embodiments, each overlapping structure 21 is located at the center of a test bench 1, and the track excitation is transmitted to the overlapping structure 21 through the center of the test bench 1.
[0105] In other words, in this embodiment, the center position of the test bench 1 is used as the point of application of track excitation, and the track excitation is transferred from the center position of the test bench 1 to the overlapping structure 21. This scheme is conducive to more accurately simulating the stress mode of the suspension frame load-bearing structure during actual vehicle operation, realizing track excitation reproduction that is more in line with the actual stress path, and improving the accuracy and realism of the test.
[0106] In addition to the above-mentioned methods for simulating track excitation in maglev vehicle vibration tests, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment of the invention also provides a maglev test track excitation simulation and loading system. This system includes N test benches 1, N sets of drive devices, a test vehicle, and a control device. The N test benches 1 are arranged sequentially along a preset direction to simulate a target track; N is a positive integer greater than or equal to 2; each test bench 1 is driven by a set of drive devices; the test vehicle includes N-1 vehicle running parts 2, and any two adjacent vehicle running parts 2 are connected by an overlapping structure 21, with each overlapping structure 21 located at a preset position on a test bench 1; the control device is connected to the N sets of drive devices to implement the maglev vehicle vibration test track excitation simulation method disclosed in any of the above embodiments.
[0107] In other words, this embodiment utilizes a control device to control the operation of N sets of drive devices through the maglev vehicle vibration test track excitation simulation method disclosed in any of the above embodiments. This causes N test benches 1 to move in a coordinated manner to simulate the target track. When the N test benches 1 move according to the drive displacement under the action of the corresponding drive devices, the track excitation is applied to the overlapping structure 21. The track excitation is transmitted to the vehicle running gear 2 through the overlapping structure 21, and then to the test vehicle by the vehicle running gear 2, simulating the stress situation of the suspension frame load-bearing structure during actual vehicle operation. It can be seen that this maglev test track excitation simulation and loading system, using the maglev vehicle vibration test track excitation simulation method disclosed in any of the above embodiments, at least has the beneficial effects of the aforementioned maglev vehicle vibration test track excitation simulation method, which will not be elaborated further here.
[0108] It should be noted that the specific value of N is not limited in the embodiments of the present invention. For example, N=8, that is, the magnetic levitation test track excitation simulation and loading system includes eight test benches 1, eight sets of drive devices, and the test vehicle includes seven vehicle running parts 2 and eight overlapping structures 21.
[0109] Furthermore, in some embodiments, each overlapping structure 21 is located at the center of a test bench 1.
[0110] In other words, in this embodiment, the center position of the test bench 1 is used as the point of application of track excitation, and the track excitation is transferred from the center position of the test bench 1 to the overlapping structure 21. This scheme is conducive to more accurately simulating the stress mode of the suspension frame load-bearing structure during actual vehicle operation, realizing track excitation reproduction that is more in line with the actual stress path, and improving the accuracy and realism of the test.
[0111] In addition, in some embodiments, the test bench 1 includes a guide rail surface 12 and a suspension rail surface 13; the vehicle running component 2 includes a guide electromagnet and a suspension electromagnet.
[0112] In other words, in this embodiment, the track excitation of the target track is reflected in the output of the guide track surface 12 and the suspension track surface 13 of the test bench 1. The corresponding test bench 1 is driven by the driving device to achieve the required displacement of each test bench 1, so that all test benches 1 cooperate to simulate the track guide surface excitation and track suspension surface excitation of the target track. Thus, the magnetic force of the guide electromagnet and the suspension electromagnet can be adjusted according to the track guide surface excitation and the track suspension surface excitation. In this way, the relationship between the magnetic force of the guide electromagnet and the suspension electromagnet and the vibration of the vehicle running parts 2 under track excitation can be determined, which is helpful to determine the appropriate magnetic force of the guide electromagnet and the suspension electromagnet.
[0113] Corresponding to the above embodiments of the maglev test track excitation simulation and loading method, this invention also provides a maglev test track excitation simulation and loading device. The maglev test track excitation simulation and loading device described below can be referred to in correspondence with the maglev test track excitation simulation and loading method described above.
[0114] Please refer to Figure 8 This is the structural frame of the maglev test track excitation simulation and loading device provided in a specific embodiment of the present invention. The maglev test track excitation simulation and loading device is applied to a maglev test track excitation simulation and loading system. The maglev test track excitation simulation and loading system includes N test benches 1 arranged sequentially, N sets of drive devices, and a test vehicle. Each test bench 1 is driven by one set of the aforementioned drive devices. The test vehicle includes N-1 vehicle running parts 2. Any two adjacent vehicle running parts 2 are connected by an overlapping structure 21. Each overlapping structure 21 is located at a preset position on a test bench 1, and N is a positive integer greater than or equal to 2.
[0115] The maglev test track excitation simulation and loading device includes:
[0116] Deformation data acquisition module 31 is used to acquire the actual deformation data of the target track;
[0117] The drive displacement calculation module 32 is used to obtain the drive displacement of each test bench 1 based on the actual deformation data of the target track.
[0118] The drive module 33 is used to control the action of each set of drive devices according to the drive displacement of each test bench 1, so that each set of drive devices drives the corresponding test bench 1 to achieve the corresponding drive displacement, so that all test benches 1 cooperate to simulate the track excitation of the target track. The track excitation is transmitted to the vehicle running parts 2 through the overlapping structure 21.
[0119] It can be seen that the maglev test track excitation simulation and loading device corresponds to the maglev test track excitation simulation and loading method described above. Therefore, the maglev test track excitation simulation and loading device has the same beneficial effects as the maglev test track excitation simulation and loading method described above, and will not be elaborated here.
[0120] For the corresponding implementation examples of the maglev test track excitation simulation and loading method, please refer to [link / reference]. Figure 9 The diagram shows the structure of the magnetic levitation test track excitation simulation and loading device provided by the present invention. The magnetic levitation test track excitation simulation and loading device includes a memory 41 and a processor 42. The memory 41 is used to store computer programs. The processor 42 is used to execute the computer programs to implement the steps of the magnetic levitation test track excitation simulation and loading method disclosed in any of the above embodiments.
[0121] For an introduction to the maglev test track excitation simulation and loading device provided by the present invention, please refer to the above-described embodiments of the maglev test track excitation simulation and loading method. The present invention will not be described in detail here.
[0122] Corresponding to the above embodiments of the maglev test track excitation simulation and loading method, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the steps of the maglev test track excitation simulation and loading method disclosed in any of the above embodiments.
[0123] The computer-readable storage medium may include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0124] For a description of the computer-readable storage medium provided by this invention, please refer to the above-described embodiments of the magnetic levitation test track excitation simulation and loading method; this invention will not be elaborated upon here.
[0125] It should also be noted that, in this specification, relational terms such as first and second are used only 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.
[0126] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0127] The above provides a detailed description of the method, system, device, equipment, and medium for achieving excitation of a magnetic levitation test track provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of this invention.
Claims
1. A magnetic levitation test track excitation simulation and loading method, characterized in that, The system is applied to the excitation simulation and loading system of maglev test track. The maglev test track excitation simulation and loading system includes N test benches (1) arranged in sequence, N sets of drive devices and test vehicles. Each test bench (1) is driven by a set of drive devices. The test vehicle includes N-1 vehicle running parts (2). Any two adjacent vehicle running parts (2) are connected by an overlapping structure (21). Each overlapping structure (21) is located at a preset position of a test bench (1). N is a positive integer greater than or equal to 2. The excitation simulation and loading method for the magnetic levitation test track includes: Obtain the actual deformation data of the target trajectory; Based on the actual deformation data, the driving displacement of each of the test benches (1) is obtained; According to the driving displacement of each test bench (1), the driving device of each set is controlled to drive the corresponding test bench (1) to reach the corresponding driving displacement, so that all the test benches (1) cooperate to simulate the track excitation of the target track, and the track excitation is transmitted to the vehicle running parts (2) through the overlapping structure (21).
2. The method for simulating and loading excitation on a magnetic levitation test track according to claim 1, characterized in that, Obtain the actual deformation data of the target orbit, including: Obtain the actual bridge span deformation data of the target track, and obtain the track irregularity data of the target track; Based on the actual deformation data, the driving displacement of each of the test benches (1) is obtained, including: Based on the actual bridge span deformation data, the first driving displacement of each test bench (1) is obtained, and based on the track irregularity data, the second driving displacement of each test bench (1) is obtained. The first driving displacement and the second driving displacement are superimposed to obtain the driving displacement of each test bench (1).
3. The method for simulating and loading the magnetic levitation test track according to claim 2, characterized in that, Based on the actual bridge span deformation data, the first driving displacement of each of the test benches (1) is obtained, including: The docking point of any two adjacent test benches (1) and the outermost endpoints of the two outermost test benches (1) are taken as response points (11). Based on the actual bridge span deformation data, the dynamic displacement of each response point (11) is obtained; The first driving displacement of each of the test benches (1) is obtained based on the dynamic displacement of each of the response points (11).
4. The method for simulating and loading the magnetic levitation test track according to claim 3, characterized in that, The first driving displacement of each of the test benches (1) is obtained based on the dynamic displacement of each of the response points (11), including: The dynamic displacement of each response point (11) is decomposed to obtain the vertical displacement, head nod displacement and side roll displacement of each response point (11). The vertical displacement, nodding displacement and lateral roll displacement of each of the response points (11) are obtained.
5. The method for simulating and loading excitation on a magnetic levitation test track according to claim 2, characterized in that, Based on the track irregularity data, the second driving displacement of each of the test benches (1) is obtained, including: According to the preset running speed of the vehicle running component (2), the track irregularity data is converted into a displacement excitation signal that varies with time, and the displacement excitation signal is the second driving displacement.
6. The method for simulating and loading excitation on a magnetic levitation test track according to any one of claims 1-5, characterized in that, Each of the aforementioned drive units includes at least two drive mechanisms to control the operation of each set of drive units, including: Control all the drive mechanisms corresponding to each test bench (1) to operate synchronously, so that each test bench (1) reaches the corresponding drive displacement.
7. The method for simulating and loading excitation on a magnetic levitation test track according to any one of claims 1-5, characterized in that, Each of the said overlapping structures (21) is located at the center of one of the test benches (1), and the track excitation is transmitted to the overlapping structure (21) through the center of the test bench (1).
8. A magnetic levitation test track excitation simulation and loading system, characterized in that, include: N test benches (1) are set up sequentially along a preset direction to simulate the target track; N is a positive integer greater than or equal to 2; N sets of driving devices, each of the test benches (1) is driven by one set of driving devices; The test vehicle includes N-1 vehicle running parts (2), any two adjacent vehicle running parts are connected by an overlap structure (21), and each overlap structure (21) is located at a preset position of a test bench (1); A control device, connected to N sets of the aforementioned drive devices, is used to implement the magnetic levitation vehicle vibration test track excitation simulation method according to any one of claims 1-7.
9. The magnetic levitation test track excitation simulation and loading system according to claim 8, characterized in that, Each of the said overlapping structures (21) is located at the center of one of the test benches (1).
10. The magnetic levitation test track excitation simulation and loading system according to claim 8, characterized in that, The test bench (1) includes a guide track surface (12) and a suspension track surface (13); the vehicle running component (2) includes a guide electromagnet and a suspension electromagnet.
11. A magnetic levitation test track excitation simulation and loading device, characterized in that, The system is applied to the excitation simulation and loading system of the maglev test track. The maglev test track excitation simulation and loading system includes N test benches (1) arranged in sequence, N sets of drive devices and test vehicles. Each test bench (1) is driven by a set of drive devices. The test vehicle includes N-1 vehicle running parts (2). Any two adjacent vehicle running parts (2) are connected by an overlapping structure (21). Each overlapping structure (21) is located at a preset position of one of the test benches (1). N is a positive integer greater than or equal to 2. The maglev test track excitation simulation and loading device includes: The deformation data acquisition module (31) is used to acquire the actual deformation data of the target track; The drive displacement calculation module (32) is used to obtain the drive displacement of each of the test benches (1) based on the actual deformation data. The drive module (33) is used to control the action of each set of drive devices according to the drive displacement of each test bench (1), so that each set of drive devices drives the corresponding test bench (1) to reach the corresponding drive displacement, so that all the test benches (1) cooperate to simulate the track excitation of the target track, and the track excitation is transmitted to the vehicle running parts (2) through the overlapping structure (21).
12. A magnetic levitation test track excitation simulation and loading device, characterized in that, include: Memory (41), used to store computer programs; The processor (42) is configured to implement the steps of the magnetic levitation test track excitation simulation and loading method as described in any one of claims 1 to 7 when executing the computer program.
13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the magnetic levitation test track excitation simulation and loading method as described in any one of claims 1 to 7.