A method and device for analyzing intervention degree of rail corrugation state of high-speed railway

Abstract

The application discloses a high-speed railway rail corrugation state regulation intervention degree analysis method and device, wherein the method comprises the following steps: acquiring vehicle-mounted axle box vertical vibration acceleration measured data; performing band-pass filtering on the vehicle-mounted axle box vertical vibration acceleration measured data to obtain a frequency band signal of a specified corrugation management wavelength range; dividing the rail into multiple units, and determining an acceleration effective value according to the frequency band signal of the specified corrugation management wavelength range; determining a unit with corrugation as a unit with corrugation, if the acceleration effective value of the unit is not less than a threshold value; obtaining a corresponding grinding regulation limit value of the unit with corrugation according to a main corrugation wavelength, and obtaining a corrugation main wavelength excitation axle box vertical vibration acceleration sliding effective value through band-pass filtering; and determining a corrugation state of the unit with corrugation according to the grinding regulation limit value and the sliding effective value. The application can accurately evaluate the rail corrugation state and make the optimal grinding decision service.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed railway maintenance engineering, and in particular to a method and device for analyzing the degree of intervention in the treatment of high-speed railway rail corrugation. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. No statement herein is admitted to be prior art by virtue of its inclusion in this section.

[0003] Rail corrugation is a widespread problem in rail transit. Under high-speed conditions, rail corrugation excites high-frequency vibrations between the wheel and rail, causing environmental noise pollution, deteriorating the wheel-rail relationship, increasing power loss during vehicle operation, accelerating fatigue and damage to track components, reducing rail service life, and significantly increasing the workload for line maintenance. Without timely remediation and repair, rail corrugation and its associated problems can compromise ride comfort and, in severe cases, even cause localized damage to the track structure, endangering operational safety. Summary of the Invention

[0004] An embodiment of the present invention provides a method for analyzing the degree of intervention in the treatment of rail corrugation on high-speed railways, which is used to accurately evaluate the rail corrugation state and provide a basis for grinding decisions. The method includes:

[0005] Obtain the measured data of the vertical vibration acceleration of the vehicle axle box;

[0006] Band-pass filtering is performed on the measured data of the vertical acceleration of the vehicle axle box to obtain the frequency band signal within the specified corrugation management wavelength range;

[0007] The rail is divided into multiple units, and the effective value of the vertical vibration acceleration of the axle box of each unit is determined based on the frequency band signal of the specified corrugation management wavelength range;

[0008] The units whose effective value of vertical vibration acceleration of the axle box is not less than the threshold value are determined to be units with corrugation;

[0009] For units with corrugation, the corresponding grinding and remediation limit is obtained according to the main wavelength of corrugation, and the effective value of the vertical vibration acceleration sliding of the axle box excited by the main wavelength of corrugation is obtained through bandpass filtering;

[0010] For units with corrugation, the corrugation status is determined based on the grinding remediation limit and the effective value of sliding.

[0011] The present invention also provides a device for analyzing the degree of intervention in the treatment of rail corrugation on high-speed railways, which is used to accurately evaluate the rail corrugation state and provide a basis for grinding decisions. The device includes:

[0012] A data acquisition module is used to obtain the measured data of the vertical vibration acceleration of the vehicle-mounted axle box;

[0013] The bandpass filter module is used to perform bandpass filtering on the measured data of the vertical acceleration of the vehicle axle box to obtain the frequency band signal within the specified corrugation management wavelength range;

[0014] The effective value acquisition module is used to divide the rail into multiple units and determine the effective value of the vertical vibration acceleration of the axle box of each unit based on the frequency band signal of the specified corrugation management wavelength range;

[0015] a corrugation unit determination module, configured to determine a unit having corrugation if the effective value of the vertical vibration acceleration of the axle box is not less than a threshold value;

[0016] The sliding effective value acquisition module is used to obtain the corresponding grinding and remediation limit value for the unit with corrugation according to the main wavelength of corrugation, and obtain the effective value of the vertical vibration acceleration sliding of the axle box excited by the main wavelength of corrugation through bandpass filtering;

[0017] The corrugation state determination module is used to determine the corrugation state of the unit with corrugation according to the grinding remediation limit and the sliding effective value.

[0018] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for analyzing the degree of intervention in regulating the corrugation state of high-speed railway rails is implemented.

[0019] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-mentioned method for analyzing the degree of intervention in regulating the corrugation state of high-speed railway rails.

[0020] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above-mentioned high-speed railway rail corrugation condition regulation intervention degree analysis method.

[0021] In an embodiment of the present invention, measured data of the onboard axle box vertical vibration acceleration are obtained; the measured data are band-pass filtered to obtain a frequency band signal within a specified corrugation management wavelength range; the rail is divided into multiple units, and the effective value of the axle box vertical vibration acceleration of each unit is determined based on the frequency band signal within the specified corrugation management wavelength range; units whose effective value of the axle box vertical vibration acceleration is not less than a threshold are determined to be units with corrugation; for units with corrugation, a corresponding grinding and remediation limit is obtained based on the main wavelength of corrugation, and the effective sliding value of the axle box vertical vibration acceleration excited by the main wavelength of corrugation is obtained through band-pass filtering; and for units with corrugation, the corrugation state is determined based on the grinding and remediation limit and the effective sliding value. The steps for estimating the corrugation state based on the given onboard axle box vertical vibration acceleration provide scientific support for rail corrugation detection and diagnosis technology and grinding decision-making, thereby accurately evaluating the rail corrugation state and formulating optimal grinding decision-making services. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 Flowchart of the technical solution in the embodiment of the present invention;

[0024] Figure 2 Flowchart of the method for analyzing the degree of intervention in regulating the corrugation condition of high-speed railway rails according to an embodiment of the present invention;

[0025] Figure 3 Schematic diagram of an axle box vertical vibration acceleration detection system in an embodiment of the present invention;

[0026] Figure 4 This is the corrugation state evaluation process based on the vertical vibration acceleration of the axle box in the embodiment of the present invention;

[0027] Figure 5 Graph showing effective values ​​of vertical vibration acceleration of the axle box and valley depth under four main wavelength conditions in an embodiment of the present invention;

[0028] Figure 6 Schematic diagram of a device for analyzing the degree of intervention in regulating the corrugation condition of high-speed railway rails according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0030] In the specific embodiment, rail corrugation occurs on rails of different types of lines. The fixed wavelength mechanism and damage mechanism are widely recognized as the evolution mechanism of rail corrugation. Fixed wavelength rail corrugation is easily formed on lines with relatively fixed vehicle types and operating speeds. The frequency of the wheel-rail vibration excited by this is related to the operating speed and wavelength, as shown in the following formula:

[0031]

[0032] Where: f is the excitation frequency, in Hz; v is the vehicle speed, in mm·s -1 λ is the corrugation wavelength, measured in mm. When a vehicle passes over corrugation, the amplitude of components of the wheel-rail vibration close to the excitation frequency increases significantly and is transmitted to the axlebox, forming periodic fluctuations. In contrast, the axlebox vibration signal excited by random track irregularities lacks obvious sustained fluctuations. The effective value of the axlebox vertical vibration acceleration is a measure of the axlebox vibration intensity.

[0033] Figure 2 Flowchart of a method for analyzing the degree of intervention in regulating the corrugation condition of high-speed railway rails according to an embodiment of the present invention. The method includes:

[0034] Step 201, obtaining measured data of the vertical vibration acceleration of the vehicle-mounted axle box;

[0035] Step 202: Band-pass filtering is performed on the measured data of the vertical vibration acceleration of the vehicle-mounted axle box to obtain a frequency band signal within a specified corrugation management wavelength range;

[0036] Step 203: Divide the rail into multiple units and determine the effective value of the vertical vibration acceleration of the axle box of each unit based on the frequency band signal within the specified corrugation management wavelength range;

[0037] Step 204: determining the unit with the effective value of the vertical vibration acceleration of the axle box being not less than the threshold as a unit with corrugation;

[0038] Step 205: For the unit with corrugation, obtain the corresponding grinding and remediation limit value according to the main wavelength of the corrugation, and obtain the effective value of the vertical vibration acceleration sliding of the axle box excited by the main wavelength of the corrugation through bandpass filtering;

[0039] Step 206: For the unit with corrugation, determine the corrugation status according to the grinding and remediation limit value and the sliding effective value.

[0040] Each step is explained in detail below.

[0041] In step 201, the measured data of the vertical vibration acceleration of the vehicle-mounted axle box is obtained.

[0042] In a specific embodiment, the measured data of the vehicle-mounted axle box vertical vibration acceleration is obtained through the axle box vertical vibration acceleration detection system. The axle box vertical vibration acceleration is affected by vehicle parameters. In order to accurately judge the axle box vibration characteristics excited by track defects, the axle box vibration acceleration sensor is installed on the 1st and 4th axle positions of the detection vehicle. The structure is shown in the figure. Figure 3 As shown in the figure, in addition to the axlebox vibration acceleration sensor, the detection system also incorporates auxiliary equipment such as a gyroscope or GPS to determine the spatial location of the corrugation mill, allowing technicians to accurately locate and identify defects based on mileage or linear shape. The axlebox vertical acceleration detection system should include real-time online data acquisition, analysis and processing, effective value storage, and time-frequency domain waveform display. The corrugation mill's excitation frequency is related to the vehicle's operating speed, so the test vehicle should travel at a constant speed to reflect the axlebox's true vertical response under corrugation excitation.

[0043] In step 202 , the measured data of the vertical vibration acceleration of the vehicle-mounted axle box are subjected to band-pass filtering to obtain a frequency band signal within a specified corrugation management wavelength range.

[0044] In this specific embodiment, axlebox vibration reflects the coupling between the vehicle and track. Abnormal track conditions lead to abnormal wheel-rail vibration. Vibration is transmitted from the wheelset to the axlebox, and the amplitude of the axlebox vertical vibration acceleration increases. Therefore, using the maximum effective value of the axlebox vertical vibration acceleration can screen out sections of abnormal wheel-rail interaction.

[0045] Rail defects such as rail welds, rail surface scratches, and poor local sub-rail foundations, as well as track structures such as switches and temperature regulators, can also cause abnormal vertical vibration of the axle box. Given that corrugation has obvious periodicity in space, the duration of the vertical vibration of the axle box should be considered when judging corrugation, such as Figure 1 As shown, the 99.5% maximum value on the unit is selected to eliminate the maximum value of the axle box vertical vibration caused by impact diseases. The measured axle box vertical vibration acceleration is pre-processed by bandpass filtering, and the 10-2000Hz signal component is retained, which is denoted as ABA. This frequency band should meet the corrugation wavelength management range specified in the current high-speed rail maintenance specifications.

[0046] In step 203, the rail is divided into a plurality of units, and the effective value of the vertical vibration acceleration of the axle box in each unit is determined based on the frequency band signal of the specified corrugation management wavelength range.

[0047] In one embodiment, determining the effective value of the vertical vibration acceleration of the axle box of each unit according to the frequency band signal within the specified corrugation management wavelength range includes:

[0048] Using the sliding Hanning window, the effective value of the vertical vibration acceleration of the axle box of each unit is determined according to the frequency band signal in the specified corrugation management wavelength range.

[0049] In one embodiment, the effective value of the vertical vibration acceleration of the axle box of each unit is determined according to the following formula using a sliding Hanning window based on a frequency band signal within a specified corrugation management wavelength range:

[0050]

[0051] Among them, A rms,j represents the effective value of the vertical vibration acceleration of the axle box of the jth unit, w represents the Hanning window function, K is the number of samples of the vertical vibration acceleration of the axle box, 2K+1 is the length of the Hanning window function, ABA i The frequency band signal of the wavelength range of the specified corrugation management of the i-th unit, ABA j is the frequency band signal of the specified corrugation management wavelength range of the jth unit, N is the total number of samples of the frequency band signal corresponding to the specified corrugation management wavelength range, abs(ABA j ) is ABA j The absolute value of .

[0052] In a specific embodiment, the rail is divided into n units according to its length, and the 99.5% maximum value of the axle box vertical vibration acceleration sliding effective value sample in the i-th unit is selected and recorded as A rms,i , where i = 1, 2, ..., n.

[0053] In step 204 , the units whose effective values ​​of the vertical vibration acceleration of the axle box are not less than a threshold value are determined as units with corrugation.

[0054] In a specific embodiment, it is determined that the i-th unit A rms,i Is it greater than the threshold value T0? The threshold value T0 should be greater than 2 times the effective value of the vertical vibration acceleration of the axle box in the normal track surface state. The recommended value is 10.0g. rms,i ≥T0, it is considered that there is corrugation in the i-th unit.

[0055] In step 205, for the unit with corrugation, the corresponding grinding and remediation limit is obtained according to the main wavelength of the corrugation, and the effective value of the vertical vibration acceleration sliding of the axle box excited by the main wavelength of the corrugation is obtained by bandpass filtering.

[0056] In one embodiment, obtaining a corresponding polishing regulation limit value according to the main wavelength of the corrugation includes:

[0057] The trend fitting or curve interpolation method is used to obtain the corresponding grinding and remediation limit according to the main wavelength of the corrugation.

[0058] In a specific embodiment, the frequency band signal of the designated corrugation management wavelength range on the i-th unit is extracted, and the spectrum curve P of the frequency band signal corresponding to the designated corrugation management wavelength range is obtained by Fourier time-frequency transform. According to the energy main frequency (spectrum maximum value) f on P, i The main wavelength λ of corrugation is calculated based on the vehicle running speed.

[0059] In step 206, for the unit with corrugation, the corrugation state is determined based on the grinding remediation limit value and the sliding effective value.

[0060] In one embodiment, for a unit with corrugation, determining the degree of corrugation requiring grinding intervention based on a grinding remediation limit and a sliding effective value includes:

[0061] For units with corrugation, the grinding intervention value is calculated based on the grinding remediation limit and the effective value of sliding, and the degree of corrugation that requires grinding intervention is determined based on the grinding intervention value; among them, the grinding intervention value is the ratio of the effective value of sliding to the grinding remediation limit.

[0062] In one embodiment, the grinding intervention value is calculated according to the grinding remediation limit value and the sliding effective value according to the following formula:

[0063]

[0064] Among them, A λi The main wavelength of the corrugation is λ i The effective value of the vertical vibration acceleration sliding of the axle box under excitation, T λi The main wavelength of the corrugation is λ i The corresponding grinding remediation limit value, G is the grinding intervention value.

[0065] In one embodiment, determining the corrugation state according to the grinding intervention value includes:

[0066] When the grinding intervention value is not less than the preset value, it is determined that the unit with corrugation has reached a critical remediation state and needs grinding.

[0067] In one embodiment, determining the degree of corrugation requiring grinding intervention based on the grinding remediation limit and the effective sliding value includes:

[0068] When the grinding intervention value is less than the preset value, it is determined that the unit with corrugation has not reached the critical remediation state and needs to be further monitored.

[0069] like Figure 1 As described above, the technical solution proposed in the embodiment of the present invention uses the measured data and effective value of the vertical vibration acceleration of the axle box to obtain the main frequency of the vibration energy and determine whether there is rail corrugation. According to the frequency band signal of the specified corrugation management wavelength range, the effective value A of the vertical vibration acceleration of the axle box of each unit is determined. λ ,according to The main wavelength λ of the corrugation is calculated, where f is the excitation frequency in Hz and v is the vehicle speed in mm·s. -1 ;λ is the wave length, unit is mm. λ The polishing limit T corresponding to the main wavelength λ , obtain the effective value of the vertical vibration acceleration sliding of the axle box excited by the main wavelength of the corrugation, and determine the corrugation state based on the grinding and remediation limit and the effective value of sliding. The specific process is as follows:

[0070] 1) Perform bandpass filtering preprocessing on the measured data of the vertical vibration acceleration of the vehicle axle box, retaining the 10-2000 Hz signal component, denoted as ABA. This frequency band should meet the requirements of the corrugation management wavelength range specified in the rules for constant speed detection;

[0071] 2) Calculate the effective value of the vertical vibration acceleration of the axle box A by sliding the Hanning window rms The vertical vibration acceleration of the axle box is sampled in the time domain. The number of samples of the vertical vibration acceleration of the axle box within 2m is approximately an odd number, recorded as 2K+1. The length of the Hanning window function w is 2K+1. The total number of ABA samples is recorded as N. A is calculated according to the following formula rms :

[0072]

[0073] 3) Divide the rail into n units of 10m in length, select the 99.5% maximum value of the axle box vertical vibration acceleration sliding effective value sample in the i-th unit, and record it as A rms,i , where i = 1, 2, ..., n;

[0074] 4) Determine the i-th unit A rms,i Is it greater than the threshold T0? If A rms,i ≥T0, it is considered that there is corrugation in the i-th unit and the process continues with step 6). Otherwise, there is no corrugation in the i-th unit and the process continues with step 8);

[0075] 5) Extract the pre-processed ABA on the i-th unit according to the mileage i , the ABA spectrum curve P is obtained by Fourier time-frequency transform, and the energy main frequency (spectrum maximum) f on P is selected i , calculate the dominant wavelength λ of the corrugation i ;

[0076] 6) Bandpass filter ABA i Medium i The vertical vibration acceleration waveform component ABA of the axle box excited by the main wavelength of the corrugation is obtained in the ±10Hz frequency band fi Calculate its effective sliding value and record it as A λi ;

[0077] 7) Comparison A λi and wavelength λ i Grinding limit T λi To determine whether to polish, the formula for the polishing intervention value G is as follows:

[0078]

[0079] When G≥1, it means that the corrugation on the unit has reached the state of emergency repair, and grinding is recommended. The larger the G value, the higher the priority of the grinding operation; when G<1, it means that the unit has corrugation but has not reached the state of emergency repair, and it is recommended to continue tracking and observing;

[0080] 8) After the evaluation of the i-th unit is completed, repeat steps 5)-7) to evaluate the i+1-th unit until the end.

[0081] In a specific embodiment, the measured vertical vibration acceleration of the axle box is used to evaluate whether there is corrugation within 1000m of a high-speed railway line. The specific corrugation status evaluation process is as follows: Figure 4 shown. Figure 4 a) is the original data of the measured data of the vertical vibration acceleration of the axle box; Figure 4 b) is the frequency band signal of the specified corrugation management wavelength range obtained after filtering the measured data of the vertical vibration acceleration of the axle box; Figure 4 c) is the effective value of the vertical vibration acceleration sliding of the axle box; Figure 4 d) in the middle is the diagnosis result of the division unit and corrugation status; Figure 4 e) is the main frequency of the axle box vibration and the wavelength of the main component of corrugation; Figure 4 f) is the effective value curve of corrugation repair for different wavelengths and the division of corrugation status evaluation area. Figure 4 c) shows the effective value of the vertical vibration acceleration sliding of the axle box A rms 7 units exceeded the corresponding temporary repair threshold and fell into the polishing area; Figure 4 g) is Figure 4 Figure (a) shows the evaluation results of the rail grinding intervention value G for 1000 m. Seven locations have a G intervention value greater than 1, indicating that rail grinding is required. These locations are distributed between units 44 and 73, with a detection mileage of 440 to 730 m. Multiple units with G intervention values ​​greater than 0 and less than 1 are corrugation tracking observation areas. The maximum G intervention value is close to 2 and is located in unit 60.

[0082] The maximum valley depth of the high-speed railway line corrugation should be greater than or equal to 0.08 mm, and the effective value of the vertical vibration acceleration of the axle box in the corrugation state at a specific speed is T λ It is related to the wavelength λ. So T λ The limit values ​​are determined as follows:

[0083] 1) Measured data of the corrugation section

[0084] Collect and organize the measured data samples of wavelength, valley depth and vertical vibration acceleration of the axle box in the corrugated section, calculate the sliding effective value of the vertical vibration acceleration component of the axle box corresponding to the wavelength, and study the mapping relationship between the effective value and the wavelength and valley depth. On this basis, trend fitting or curve interpolation is used to obtain the T corresponding to the valley depth of 0.08mm under different wavelength λ conditions. λ value.

[0085] 2) Numerical simulation methods

[0086] When the measured data cannot meet the requirements, numerical simulation technology is used to obtain T λ First, a wheel-rail dynamics simulation model is constructed based on vehicle suspension parameters, track structure parameters, and wheel-rail interaction characteristics. The model is repeatedly trained using corrugation data and measured axle box vertical vibration acceleration. Based on the simulation results being close to the measured data, the effective value threshold of the axle box vertical vibration acceleration during corrugation repair under different wavelength conditions is numerically calculated. The obtained T λ The values ​​are shown in Table 1, and the shapes are as follows Figure 4 f) is shown by the dotted line.

[0087] Table 1 Recommended threshold values ​​for the effective value of vertical vibration acceleration of the axle box during temporary repair of the corrugated mill

[0088]

[0089] like Figure 5 As shown, there are four different wavelengths of corrugation excitation A rms The thick solid line is the valley depth value for rail grinding and repair in the current line repair specifications. Figure 5 It can be seen that the presence of corrugation on the line can be determined based on the vertical vibration strength (effective value) of the axle box, but the severity of the corrugation state and whether it needs to be polished and rectified cannot be effectively determined. The present invention combines the corrugation wavelength and the effective value of the vertical vibration acceleration of the axle box to jointly determine the degree of damage caused by corrugation. For example, in A rms When the vertical vibration of the axle box is significantly increased when the g is 30g, the line is suspected of corrugation. For the corrugation with wavelength of 180mm and 240mm, A rms When the wavelength is 30g, the valley depth exceeds the limit of corrugation treatment, and a grinding operation plan needs to be formulated; for the wavelength of 60mm and 120mm corrugation, A rms When the valley depth is 30g, it has not yet reached the requirements for corrugation treatment. No grinding is required, but the subsequent corrugation development should be tracked.

[0090] The present invention also provides a device for analyzing the degree of intervention in the treatment of high-speed rail corrugation, as described in the following embodiments. Since the principle of solving the problem of the device is similar to the method for analyzing the degree of intervention in the treatment of high-speed rail corrugation, the implementation of the device can refer to the implementation of the method for analyzing the degree of intervention in the treatment of high-speed rail corrugation, and the repeated parts will not be repeated. Figure 6 As shown, the device includes:

[0091] The data acquisition module 601 is used to obtain the measured data of the vertical vibration acceleration of the vehicle axle box;

[0092] The bandpass filter module 602 is used to perform bandpass filtering on the measured data of the vertical vibration acceleration of the vehicle-mounted axle box to obtain a frequency band signal within a specified corrugation management wavelength range;

[0093] The effective value acquisition module 603 is used to divide the rail into multiple units and determine the effective value of the axle box vertical vibration acceleration of each unit based on the frequency band signal of the specified corrugation management wavelength range;

[0094] A corrugation unit determination module 604 is configured to determine a unit having corrugation if the effective value of the vertical vibration acceleration of the axle box is not less than a threshold value;

[0095] The grinding and remediation limit and sliding effective value acquisition module 605 is used to obtain the corresponding grinding and remediation limit value according to the main wavelength of the corrugation for the unit with corrugation, and obtain the vertical vibration acceleration sliding effective value of the axle box excited by the main wavelength of the corrugation through bandpass filtering;

[0096] The corrugation state determination module 606 is used to determine the corrugation state of the unit with corrugation according to the grinding and remediation limit value and the sliding effective value.

[0097] In one embodiment, the effective value acquisition module 603 is specifically configured to:

[0098] Using the sliding Hanning window, the effective value of the vertical vibration acceleration of the axle box of each unit is determined according to the frequency band signal in the specified corrugation management wavelength range.

[0099] In one embodiment, the effective value acquisition module 603 is specifically configured to:

[0100] According to the following formula, using a sliding Hanning window, the effective value of the vertical vibration acceleration of the axle box of each unit is determined based on the frequency band signal within the specified corrugation management wavelength range:

[0101]

[0102] Among them, A rms,jrepresents the effective value of the vertical vibration acceleration of the axle box of the jth unit, w represents the Hanning window function, K is the number of samples of the vertical vibration acceleration of the axle box, 2K+1 is the length of the Hanning window function, ABA i The frequency band signal of the wavelength range of the specified corrugation management of the i-th unit, ABA j is the frequency band signal of the specified corrugation management wavelength range of the jth unit, N is the total number of samples of the frequency band signal corresponding to the specified corrugation management wavelength range, abs(ABA j ) is ABA j The absolute value of .

[0103] In one embodiment, the corrugation state determination module 606 is specifically configured to:

[0104] For units with corrugation, the grinding intervention value is calculated based on the grinding remediation limit and the effective sliding value, and the corrugation status is determined based on the grinding intervention value; among them, the grinding intervention value is the ratio of the effective sliding value to the grinding remediation limit.

[0105] In one embodiment, the corrugation state determination module 606 is specifically configured to:

[0106] The grinding intervention value is calculated according to the grinding remediation limit and the effective value of sliding according to the following formula:

[0107]

[0108] Among them, A λi The main wavelength of the corrugation is λ i The effective value of the vertical vibration acceleration sliding of the axle box under excitation, T λi The main wavelength of the corrugation is λ i The corresponding grinding remediation limit value, G is the grinding intervention value.

[0109] In one embodiment, the corrugation state determination module 606 is specifically configured to:

[0110] When the grinding intervention value is not less than the preset value, it is determined that the unit with corrugation has reached a critical remediation state and needs grinding.

[0111] In one embodiment, the corrugation state determination module 606 is specifically configured to:

[0112] When the grinding intervention value is less than the preset value, it is determined that the unit with corrugation has not reached the critical remediation state and needs to be further monitored.

[0113] In one embodiment, the polishing and remediation limit value and sliding effective value acquisition module 605 is specifically used to:

[0114] The trend fitting or curve interpolation method is used to obtain the corresponding grinding and remediation limit according to the main wavelength of the corrugation.

[0115] The embodiment of the present application also provides a computer device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the high-speed railway rail corrugation state remediation intervention degree analysis method when executing the computer program.

[0116] The embodiment of the present application also provides a computer readable storage medium, which stores a computer program, and the computer program implements the high-speed railway rail corrugation state remediation intervention degree analysis method when executed by a processor.

[0117] The embodiment of the present application also provides a computer program product, which comprises a computer program, and the computer program implements the high-speed railway rail corrugation state remediation intervention degree analysis method when executed by a processor.

[0118] In the embodiment of the present application, the vertical vibration acceleration measured data of the vehicle-mounted axle box is acquired; the vertical acceleration measured data of the vehicle-mounted axle box is band-pass filtered to obtain a frequency band signal of a specified corrugation management wavelength range; the rail is divided into multiple units, and the vertical vibration acceleration effective value of each unit is determined according to the frequency band signal of the specified corrugation management wavelength range; the unit with the vertical vibration acceleration effective value not less than a threshold value is determined as a unit with corrugation; the corresponding polishing remediation limit value of the unit with corrugation is obtained according to the main wavelength of the corrugation, and the sliding effective value of the vertical vibration acceleration of the axle box excited by the main wavelength of the corrugation is obtained through band-pass filtering; and the corrugation state of the unit with corrugation is determined according to the polishing remediation limit value and the sliding effective value. According to the determination steps of the corrugation state estimated by the vertical vibration acceleration of the vehicle-mounted axle box, scientific support is provided for rail corrugation detection and diagnosis technology and polishing decision, so that the rail corrugation state is accurately evaluated, and the optimal polishing decision is made.

[0119] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system or a computer program product. Therefore, the present application can adopt a completely hardware embodiment, a completely software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can adopt a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0120] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0121] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0122] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0123] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for analyzing the degree of intervention in the treatment of high-speed railway rail corrugation, characterized in that: include: S1, obtain the measured data of the vertical vibration acceleration of the vehicle axle box; S2, band-pass filtering is performed on the measured data of the vertical vibration acceleration of the vehicle axle box to obtain the frequency band signal of the specified corrugation management wavelength range; S3, divide the rail into multiple units, and determine the effective value of the vertical vibration acceleration of the axle box of each unit based on the frequency band signal of the specified corrugation management wavelength range; S4, determining the unit with the effective value of the vertical vibration acceleration of the axle box being not less than the threshold as the unit with corrugation; S5, for units with corrugation, obtain the corresponding grinding and remediation limit value according to the main wavelength of corrugation, and obtain the effective value of the vertical vibration acceleration sliding of the axle box excited by the main wavelength of corrugation through bandpass filtering; S6: For units with corrugation, determine the degree of corrugation intervention required based on the grinding remediation limit and the effective value of sliding; In S3, the effective value of the vertical vibration acceleration of the axle box of each unit is determined according to the frequency band signal of the specified corrugation management wavelength range, including: Using a sliding Hanning window, the effective value of the vertical vibration acceleration of the axle box of each unit is determined based on the frequency band signal within the specified corrugation management wavelength range; According to the following formula, using a sliding Hanning window, the effective value of the vertical vibration acceleration of the axle box of each unit is determined based on the frequency band signal within the specified corrugation management wavelength range: in, Representative j The effective value of the vertical vibration acceleration of the axle box of each unit, represents the Hanning window function, K is the number of samples of the vertical vibration acceleration of the axle box, 2 K +1 is the length of the Hanning window function, For the i The frequency band signal of the wavelength range managed by the specified corrugation of each unit, For the j The frequency band signal of the wavelength range managed by the specified corrugation of each unit, N The total number of samples of the frequency band signal corresponding to the specified corrugation management wavelength range, for The absolute value of The step S6 includes: for the unit with corrugation, calculating a grinding intervention value based on the grinding remediation limit value and the effective value of sliding, and determining the degree of corrugation requiring grinding intervention based on the grinding intervention value; wherein the grinding intervention value is the ratio of the effective value of sliding to the grinding remediation limit value; The grinding intervention value is calculated according to the grinding remediation limit and the effective value of sliding according to the following formula: ； in, The main wavelength of the corrugation is The effective value of the vertical vibration acceleration sliding of the axle box under excitation, The main wavelength of the corrugation is The corresponding grinding remediation limit value, G is the grinding intervention value.

2. The method according to claim 1, wherein Determine the corrugation status based on the grinding intervention value, including: When the grinding intervention value is not less than the preset value, it is determined that the unit with corrugation has reached a critical remediation state and needs grinding.

3. The method according to claim 1, wherein Determine the corrugation status based on the grinding intervention value, including: When the grinding intervention value is less than the preset value, it is determined that the unit with corrugation has not reached the critical remediation state and needs to be further monitored.

4. The method according to claim 1, wherein Obtain the corresponding grinding and remediation limit according to the main wavelength of the corrugation, including: The trend fitting or curve interpolation method is used to obtain the corresponding grinding and remediation limit according to the main wavelength of the corrugation.

5. A device for analyzing the degree of intervention in the treatment of high-speed railway rail corrugation, characterized in that: include: A data acquisition module is used to obtain the measured data of the vertical vibration acceleration of the vehicle-mounted axle box; The bandpass filter module is used to perform bandpass filtering on the measured data of the vertical vibration acceleration of the vehicle axle box to obtain the frequency band signal within the specified corrugation management wavelength range; The effective value acquisition module is used to divide the rail into multiple units and determine the effective value of the vertical vibration acceleration of the axle box of each unit based on the frequency band signal of the specified corrugation management wavelength range; a corrugation unit determination module, configured to determine a unit having corrugation if the effective value of the vertical vibration acceleration of the axle box is not less than a threshold value; The grinding and remediation limit and sliding effective value acquisition module is used to obtain the corresponding grinding and remediation limit value according to the main wavelength of the corrugation for the unit with corrugation, and obtain the vertical vibration acceleration sliding effective value of the axle box excited by the main wavelength of the corrugation through bandpass filtering; The corrugation state determination module is used to determine the corrugation state and the corresponding degree of remediation intervention for the unit with corrugation according to the grinding remediation limit and the effective value of sliding; The effective value acquisition module is specifically used for: Using a sliding Hanning window, the effective value of the vertical vibration acceleration of the axle box of each unit is determined based on the frequency band signal within the specified corrugation management wavelength range; The effective value acquisition module is specifically used for: According to the following formula, using a sliding Hanning window, the effective value of the vertical vibration acceleration of the axle box of each unit is determined based on the frequency band signal within the specified corrugation management wavelength range: in, Representative j The effective value of the vertical vibration acceleration of the axle box of each unit, represents the Hanning window function, K is the number of samples of the vertical vibration acceleration of the axle box, 2 K +1 is the length of the Hanning window function, For the i The frequency band signal of the wavelength range managed by the specified corrugation of each unit, For the j The frequency band signal of the wavelength range managed by the specified corrugation of each unit, N The total number of samples of the frequency band signal corresponding to the specified corrugation management wavelength range, for The absolute value of The corrugation state determination module is specifically used to: For units with corrugation, the grinding intervention value is calculated based on the grinding remediation limit value and the effective sliding value, and the corrugation state is determined based on the grinding intervention value; wherein the grinding intervention value is the ratio of the effective sliding value to the grinding remediation limit value; The corrugation state determination module is specifically used to: The grinding intervention value is calculated according to the grinding remediation limit and the effective value of sliding according to the following formula: ； in, The main wavelength of the corrugation is The effective value of the vertical vibration acceleration sliding of the axle box under excitation, The main wavelength of the corrugation is The corresponding grinding remediation limit value, G is the grinding intervention value.

6. The device according to claim 5, characterized in that The corrugation state determination module is specifically used to: When the grinding intervention value is not less than the preset value, it is determined that the unit with corrugation has reached a critical remediation state and needs grinding.

7. The device according to claim 5, characterized in that The corrugation state determination module is specifically used to: When the grinding intervention value is less than the preset value, it is determined that the unit with corrugation has not reached the critical remediation state and needs to be further monitored.

8. The device according to claim 5, wherein The module for obtaining the polishing and remediation limit and sliding effective value is specifically used for: The trend fitting or curve interpolation method is used to obtain the corresponding grinding and remediation limit according to the main wavelength of the corrugation.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method according to any one of claims 1 to 4 is implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

11. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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