CN117030224A - Load spectrum equivalent method, device, terminal and storage medium - Google Patents
Load spectrum equivalent method, device, terminal and storage medium Download PDFInfo
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- G01M13/00—Testing of machine parts
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
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Abstract
The invention discloses a load spectrum equivalent method, a device, a terminal and a storage medium, which belong to the field of fatigue durability of automobile components; the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range are respectively determined according to the original load spectrum data of each road surface and the cycle times of each road surface; determining the cycle times of each amplitude range through the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range; determining the total circulation times of the block spectrum according to the circulation times of each amplitude range and the equivalent series of the load spectrum, judging whether the total circulation times of the block spectrum are smaller than the allowable error of the circulation times according to the difference value of the total circulation times of the block spectrum and the equivalent target circulation times, if so, outputting an equivalent load spectrum, improving the equivalent efficiency of the load spectrum, and being applicable to bench test, obviously shortening the bench test time and reducing the labor cost after the equivalent load spectrum.
Description
Technical Field
The invention discloses a load spectrum equivalent method, a load spectrum equivalent device, a load spectrum equivalent terminal and a load spectrum equivalent storage medium, and belongs to the field of fatigue durability of automobile components.
Background
The load spectrum equivalence is a common method for evaluating the fatigue durability of parts, the test time of a rack can be obviously shortened through the block spectrum after the load spectrum equivalence, the current load spectrum equivalence method is mainly based on pseudo damage equivalence, engineers select load spectrum amplitude values according to personal experience and repeatedly test calculation, the consistency of pseudo damage is ensured when the load spectrum is before and after the equivalence, the block spectrum efficiency of the manual equivalence method is still good when the equivalent stage number is less, but when the stage number is more than 2 stages, the repeated test calculation is needed, and the efficiency is lower.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a load spectrum equivalent method, a load spectrum equivalent device, a load spectrum equivalent terminal and a load spectrum equivalent storage medium, and solves the problem of low efficiency of the current manual equivalent load spectrum.
The technical scheme of the invention is as follows:
according to a first aspect of an embodiment of the present invention, there is provided a load spectrum equivalent method, including:
respectively acquiring original load spectrum data of each pavement, cycle times of each pavement, equivalent target cycle times, allowable cycle times errors and equivalent series of load spectrums;
Respectively determining original load spectrum pseudo-damage data and pseudo-damage data in each amplitude range according to the original load spectrum data of each road surface and the cycle times of each road surface;
determining the cycle times of each amplitude range according to the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range;
and determining the total circulation times of the block spectrum according to the circulation times of each amplitude range and the equivalent series of the load spectrum, judging whether the total circulation times of the block spectrum are smaller than the allowable error of the circulation times according to the difference value of the total circulation times of the block spectrum and the equivalent target circulation times, and outputting an equivalent load spectrum if the total circulation times of the block spectrum are smaller than the allowable error of the circulation times.
Preferably, the determining the original load spectrum pseudo damage data and the pseudo damage data in each amplitude range according to the original load spectrum data of each road surface and the cycle times of each road surface respectively includes:
obtaining original load spectrum pseudo damage data of each pavement through the original load spectrum data of each pavement; obtaining original load spectrum pseudo-damage data according to the original load spectrum pseudo-damage data of each road surface and the cycle times of each road surface;
obtaining the original grade-through counting result of each pavement through the original load spectrum data of each pavement;
obtaining a load amplitude range set according to the original grade passing counting result of each pavement and the cycle times of each pavement;
And obtaining pseudo damage data of each amplitude range according to the load amplitude range set.
Preferably, the determining the total number of cycles of the block spectrum according to the number of cycles of each amplitude range and the load spectrum equivalent series includes:
when the load spectrum equivalent series is equal to 1, determining a load amplitude range closest to the target circulation times according to the circulation times of each amplitude range, determining a block spectrum amplitude range according to the load amplitude range closest to the target circulation times, and determining a first block spectrum total circulation times according to the block spectrum amplitude range;
when the load spectrum equivalent series is equal to 2, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, wherein the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
determining first-stage block spectrum pseudo-damage data according to the pseudo-damage data of each amplitude range, and obtaining second-stage block spectrum total circulation times according to the circulation times of each amplitude range, the original load spectrum pseudo-damage data and the first-stage block spectrum pseudo-damage data;
when the load spectrum equivalent series is more than or equal to 3, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, and the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
According to the load amplitude range set, sequencing the load amplitude range set according to the amplitude range from high to low, and obtaining N amplitude ranges corresponding to the pseudo damage data of each amplitude range;
obtaining circulation times corresponding to 2-N amplitude ranges according to the N amplitude ranges, optionally carrying out permutation and combination on N-1, sequencing and screening each permutation result according to the circulation times, and obtaining the total circulation times of a third block spectrum according to a formula (1) from the circulation times of each permutation result after screening
Wherein N is the number of cycles, and N is the total number of cycles of the third block spectrum.
Preferably, when the difference between the total number of cycles of the block spectrum and the equivalent target number of cycles is greater than the allowable error of the number of cycles, the method includes:
when the load spectrum equivalent series is equal to 1, comprising:
when the total circulation times of the first block spectrum is larger than the target circulation times, the range of the block spectrum amplitude value is required to be enlarged;
when the total circulation times of the first block spectrum is smaller than the target circulation times, the range of the block spectrum amplitude value is required to be reduced;
when the load spectrum equivalent series is more than or equal to 2, the block spectrum amplitude range is adjusted to be the same as when the load spectrum equivalent series is equal to 1.
According to a second aspect of an embodiment of the present invention, there is provided a load spectrum equivalent device comprising:
The data acquisition module is used for respectively acquiring original load spectrum data of each pavement, the circulation times of each pavement, the equivalent target circulation times, the allowable error of the circulation times and the equivalent series of the load spectrum;
the pseudo-damage data module is used for respectively determining original load spectrum pseudo-damage data and pseudo-damage data in each amplitude range according to the original load spectrum data of each road surface and the cycle times of each road surface;
the cycle number module is used for determining the cycle number of each amplitude range according to the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range;
and the equivalent load spectrum module is used for determining the total circulation times of the block spectrum according to the circulation times of each amplitude range and the equivalent series of the load spectrum, judging whether the total circulation times of the block spectrum are smaller than the allowable error of the circulation times according to the difference value of the total circulation times of the block spectrum and the equivalent target circulation times, and outputting an equivalent load spectrum if the total circulation times of the block spectrum are smaller than the allowable error of the circulation times.
Preferably, the pseudo damage data module is configured to:
obtaining original load spectrum pseudo damage data of each pavement through the original load spectrum data of each pavement; obtaining original load spectrum pseudo-damage data according to the original load spectrum pseudo-damage data of each road surface and the cycle times of each road surface;
obtaining the original grade-through counting result of each pavement through the original load spectrum data of each pavement;
Obtaining a load amplitude range set according to the original grade passing counting result of each pavement and the cycle times of each pavement;
and obtaining pseudo damage data of each amplitude range according to the load amplitude range set.
Preferably, the equivalent load spectrum module is configured to:
when the load spectrum equivalent series is equal to 1, determining a load amplitude range closest to the target circulation times according to the circulation times of each amplitude range, determining a block spectrum amplitude range according to the load amplitude range closest to the target circulation times, and determining a first block spectrum total circulation times according to the block spectrum amplitude range;
when the load spectrum equivalent series is equal to 2, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, wherein the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
determining first-stage block spectrum pseudo-damage data according to the pseudo-damage data of each amplitude range, and obtaining second-stage block spectrum total circulation times according to the circulation times of each amplitude range, the original load spectrum pseudo-damage data and the first-stage block spectrum pseudo-damage data;
when the load spectrum equivalent series is more than or equal to 3, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, and the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
According to the load amplitude range set, sequencing the load amplitude range set according to the amplitude range from high to low, and obtaining N amplitude ranges corresponding to the pseudo damage data of each amplitude range;
and (3) obtaining the circulation times corresponding to 2-N amplitude ranges according to the N amplitude ranges, optionally carrying out permutation and combination, sequencing and screening each permutation result according to the circulation times, and obtaining the total circulation times of the third block spectrum according to the circulation times of each screened permutation result by using a formula (1).
Wherein N is the number of cycles, and N is the total number of cycles of the third block spectrum.
Preferably, the equivalent load spectrum module is configured to:
when the load spectrum equivalent series is equal to 1, comprising:
when the total circulation times of the first block spectrum is larger than the target circulation times, the range of the block spectrum amplitude value is required to be enlarged;
when the total circulation times of the first block spectrum is smaller than the target circulation times, the range of the block spectrum amplitude value is required to be reduced;
when the load spectrum equivalent series is more than or equal to 2, the block spectrum amplitude range is adjusted to be the same as when the load spectrum equivalent series is equal to 1.
According to a third aspect of an embodiment of the present invention, there is provided a terminal including:
one or more processors;
a memory for storing the one or more processor-executable instructions;
Wherein the one or more processors are configured to:
the method according to the first aspect of the embodiment of the invention is performed.
According to a fourth aspect of embodiments of the present invention, there is provided a non-transitory computer readable storage medium, which when executed by a processor of a terminal, enables the terminal to perform the method according to the first aspect of embodiments of the present invention.
According to a fifth aspect of embodiments of the present invention, there is provided an application program product for causing a terminal to carry out the method according to the first aspect of embodiments of the present invention when the application program product is run at the terminal.
The invention has the beneficial effects that:
the invention provides a load spectrum equivalent method, which comprises the steps of respectively obtaining original load spectrum data of each road surface, circulation times of each road surface, equivalent target circulation times, allowable error of circulation times and equivalent series of load spectrum; the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range are respectively determined according to the original load spectrum data of each road surface and the cycle times of each road surface; determining the cycle times of each amplitude range through the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range; determining the total circulation times of the block spectrum according to the circulation times of each amplitude range and the equivalent series of the load spectrum, judging whether the total circulation times of the block spectrum are smaller than the allowable error of the circulation times according to the difference value of the total circulation times of the block spectrum and the equivalent target circulation times, if so, outputting an equivalent load spectrum, improving the equivalent efficiency of the load spectrum, and being applicable to bench test, obviously shortening the bench test time and reducing the labor cost after the equivalent load spectrum.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
FIG. 1 is a flow chart illustrating a load spectrum equivalence method according to an exemplary embodiment.
Fig. 2 is a schematic diagram of a level-crossing count result in a load spectrum equivalent method according to an exemplary embodiment.
FIG. 3 is a block spectrum amplitude range adjustment schematic diagram in a load spectrum equivalent method according to an exemplary embodiment.
Fig. 4 is a schematic diagram showing a first-stage block spectrum value in a load spectrum equivalent method according to an exemplary embodiment.
FIG. 5 is a diagram illustrating a block spectrum valued at level n-1 in a load spectrum equivalent method according to an exemplary embodiment.
FIG. 6 is a schematic diagram of an example primary block spectrum in a load spectrum equivalent method, according to an example embodiment.
FIG. 7 is a schematic diagram of an example secondary block spectrum in a load spectrum equivalent method, according to an example embodiment.
FIG. 8 is a schematic diagram of an example three-level block spectrum in a load spectrum equivalent method, according to an example embodiment.
FIG. 9 is a schematic diagram of an example four-level block spectrum in a load spectrum equivalent method, according to an example embodiment.
Fig. 10 is a block diagram schematically illustrating a structure of a load spectrum equivalent device according to an exemplary embodiment.
Fig. 11 is a schematic block diagram illustrating a terminal structure according to an exemplary embodiment.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the invention provides a load spectrum equivalent method, which is realized by a terminal, wherein the terminal can be a desktop computer or a notebook computer and the like, and at least comprises a CPU and the like.
Example 1
Fig. 1 is a flow chart illustrating a load spectrum equivalent method for use in a terminal, according to an exemplary embodiment, the method comprising the steps of:
step 101, respectively acquiring original load spectrum data of each pavement, cycle times of each pavement, equivalent target cycle times, cycle time allowable errors and load spectrum equivalent series.
Step 102, determining original load spectrum pseudo-damage data and amplitude range pseudo-damage data according to the original load spectrum data of each road surface and the cycle times of each road surface, wherein the specific contents are as follows:
the method comprises the steps of performing pseudo-damage calculation on original load spectrum data of each road surface to obtain pseudo-damage data of each road surface, multiplying the pseudo-damage data of each road surface by cycle times of each road surface respectively, and summing to obtain the pseudo-damage data of each road surface.
The method comprises the steps of carrying out grade passing counting on original load spectrum data of each pavement to obtain original grade passing counting results of each pavement, multiplying the original grade passing counting results of each pavement by cycle times of each pavement respectively, and summing to obtain grade passing counting results. As shown in fig. 2, the default puncture level counts 64 levels and corresponds to 64 level loads, respectively. And under a certain cycle number, determining the maximum value and the minimum value of the corresponding penetrating load under the cycle number according to the penetrating counting result, and respectively determining the maximum value and the minimum value of the block spectrum amplitude range, so as to obtain a plurality of load amplitude range sets.
Determining maximum and minimum values of each amplitude range according to the load amplitude range set, and determining a sine wave by the maximum and minimum values of each amplitude range, wherein:
the amplitude of the sine wave is: (amplitude range maximum-amplitude range minimum)/2;
the average value is: (amplitude range maximum + amplitude range minimum)/2;
and performing pseudo-damage calculation on the sine wave to obtain pseudo-damage data of each amplitude range.
Step 103, determining the cycle times of each amplitude range according to the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range, wherein the specific contents are as follows:
the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range are used for determining the circulation times of each amplitude range through the following formula (1):
cycle times for each amplitude range = original load spectrum pseudo-injury/each sine wave pseudo-injury (1)
Step 104, determining the total circulation times of the block spectrum according to the circulation times of each amplitude range and the equivalent series of the load spectrum, judging whether the total circulation times of the block spectrum are smaller than the allowable error of the circulation times according to the difference value of the total circulation times of the block spectrum and the equivalent target circulation times, and if yes, outputting an equivalent load spectrum, wherein the specific contents are as follows:
when the load spectrum equivalent series is equal to 1, determining a load amplitude range closest to the target circulation times according to the circulation times of each amplitude range, determining a block spectrum amplitude range according to the load amplitude range closest to the target circulation times, and determining a first block spectrum total circulation times according to the block spectrum amplitude range;
Judging whether the difference value between the total circulation times of the first block spectrum and the equivalent target circulation times is smaller than the allowable error of the circulation times or not:
if yes, outputting an equivalent load spectrum;
and if not, executing a step.
(1) When the total cycle number of the first block spectrum is greater than the target cycle number, the block spectrum amplitude range needs to be enlarged, as shown in fig. 3, and if the difference between the reference value and the maximum value of the block spectrum amplitude range is smaller than the difference between the reference value and the minimum value, the default value can be enlarged, the step size can be reduced according to the load amplitude range set, so that the error between the total cycle number and the target cycle number can be reduced, and the maximum value of the first-stage block spectrum amplitude range can be enlarged; otherwise, the minimum value of the primary block spectrum amplitude range is reduced.
(2) When the total circulation times of the first block spectrum is smaller than the target circulation times, the range of the block spectrum amplitude value is required to be reduced; as shown in fig. 3, with the maximum cycle number load as a reference, if the difference between the reference value and the maximum value of the block spectrum amplitude range is smaller than the difference between the reference value and the minimum value, the default value can be increased, the step size can be reduced, so as to reduce the error between the total cycle number and the target number, and the minimum value of the primary block spectrum amplitude range can be reduced; and otherwise, reducing the maximum value of the primary block spectrum amplitude range.
And (3) after adjusting the block spectrum amplitude range according to the cycle number judgment condition in the step (1) or the step (2), recalculating the cycle number of each amplitude range according to the formula (1), judging the cycle number error again, and outputting a calculation result after repeated iterative calculation and meeting the cycle number error.
When the load spectrum equivalent series is equal to 2, as shown in fig. 4, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, and the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
determining first-stage block spectrum pseudo-damage data according to the pseudo-damage data in each amplitude range, and obtaining second-stage block spectrum total circulation times according to the circulation times in each amplitude range, the original load spectrum pseudo-damage data and the first-stage block spectrum pseudo-damage data, wherein the specific steps are as follows:
determining first-stage block spectrum pseudo-damage data through the pseudo-damage data in each amplitude range, multiplying the circulation times of each amplitude range by a coefficient, obtaining the coefficient through the following formula (2), and adding the circulation times of the first-stage block spectrum to obtain the total circulation times of the second block spectrum.
K= (original load spectrum pseudo-injury-1 level block spectrum pseudo-injury)/original load spectrum pseudo-injury (2)
And if the total circulation times of the block spectrum meet the error requirement, outputting an equivalent load spectrum, otherwise, adjusting the amplitude range of the second-stage block spectrum according to a method for adjusting the amplitude range of the block spectrum when the equivalent level number of the load spectrum is equal to 1.
When the load spectrum equivalent series is more than or equal to 3, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, and the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
sequencing the load amplitude range sets according to the amplitude range from high to low, wherein the sequencing result is shown in fig. 5, and N amplitude ranges are obtained corresponding to the pseudo damage data of each amplitude range;
obtaining circulation times corresponding to 2-N amplitude ranges according to the N amplitude ranges by adopting an enumeration method, optionally carrying out permutation and combination, sequencing each permutation result according to the circulation times, ensuring that the ith circulation times are more than 3 times (i=2, 3 … … N) of the ith circulation times of the ith-1 level in order to ensure that certain gradients are kept among block spectrums of all levels, screening, and obtaining the total circulation times of a third block spectrum according to a formula (3) from the circulation times of each permutation result after screening
Wherein N is the number of cycles, and N is the total number of cycles of the third block spectrum.
If the total circulation times of the third block spectrum meets the error requirement, outputting an equivalent load spectrum, otherwise, adopting the same method when the equivalent series number of the load spectrum is equal to 1, and sequentially adjusting the amplitude range of each stage of block spectrum from small to large according to the amplitude range of the block spectrum, wherein the limiting conditions are as follows: the i-th level amplitude range is not larger than the i-1-th level amplitude range and not smaller than the i+1-th level amplitude range until the total cycle number error meets the requirement.
Specific examples according to the above steps are as follows:
load spectrum equivalent case of certain automobile parts:
the target equivalent frequency is 100000 times, the road surface cycle frequency is 1100 times, the error defaults to 10%, the first-stage block spectrum equivalent result is shown in fig. 6, and the cycle frequency is 103575. The second stage block spectrum equivalent results are shown in fig. 7, stage 1 cycle 1100,2 cycle 90245, total cycle 91345. The third stage block spectrum equivalent result is shown in fig. 8, wherein the 1-stage circulation times 1100,2-stage circulation times 90245 and the total circulation times 91345. The fourth stage block spectrum equivalent result is shown in fig. 9, the 1-stage circulation times 1100,2-stage circulation times 3787,3-stage circulation times 9006,4-stage circulation times 81612, and the total circulation times 95505.
Example two
Fig. 10 is a block diagram schematically illustrating a load spectrum equivalent device according to an exemplary embodiment, the device comprising:
The data acquisition module 210 is configured to acquire original load spectrum data of each road surface, cycle number of each road surface, equivalent target cycle number, allowable error of cycle number and equivalent series of load spectrum;
the pseudo-damage data module 220 is configured to determine original load spectrum pseudo-damage data and pseudo-damage data in each amplitude range according to the original load spectrum data of each road surface and the cycle number of each road surface;
the cycle number module 230 is configured to determine cycle numbers of each amplitude range according to the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range;
the equivalent load spectrum module 240 is configured to determine a total number of cycles of the block spectrum according to the number of cycles of each amplitude range and the equivalent number of cycles of the load spectrum, determine whether the total number of cycles of the block spectrum is smaller than a cycle number allowable error according to a difference between the total number of cycles of the block spectrum and the equivalent target number of cycles, and if yes, output an equivalent load spectrum.
Preferably, the pseudo damage data module 220 is configured to:
obtaining original load spectrum pseudo damage data of each pavement through the original load spectrum data of each pavement; obtaining original load spectrum pseudo-damage data according to the original load spectrum pseudo-damage data of each road surface and the cycle times of each road surface;
Obtaining the original grade-through counting result of each pavement through the original load spectrum data of each pavement;
obtaining a load amplitude range set according to the original grade passing counting result of each pavement and the cycle times of each pavement;
and obtaining pseudo damage data of each amplitude range according to the load amplitude range set.
Preferably, the equivalent load spectrum module 240 is configured to:
when the load spectrum equivalent series is equal to 1, determining a load amplitude range closest to the target circulation times according to the circulation times of each amplitude range, determining a block spectrum amplitude range according to the load amplitude range closest to the target circulation times, and determining a first block spectrum total circulation times according to the block spectrum amplitude range;
when the load spectrum equivalent series is equal to 2, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, wherein the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
determining first-stage block spectrum pseudo-damage data according to the pseudo-damage data of each amplitude range, and obtaining second-stage block spectrum total circulation times according to the circulation times of each amplitude range, the original load spectrum pseudo-damage data and the first-stage block spectrum pseudo-damage data;
When the load spectrum equivalent series is more than or equal to 3, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, and the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
according to the load amplitude range set, sequencing the load amplitude range set according to the amplitude range from high to low, and obtaining N amplitude ranges corresponding to the pseudo damage data of each amplitude range;
and (3) obtaining the circulation times corresponding to 2-N amplitude ranges according to the N amplitude ranges, optionally carrying out permutation and combination, sequencing and screening each permutation result according to the circulation times, and obtaining the total circulation times of the third block spectrum according to the circulation times of each screened permutation result by using a formula (1).
Wherein N is the number of cycles, and N is the total number of cycles of the third block spectrum.
Preferably, the equivalent load spectrum module 240 is configured to:
when the load spectrum equivalent series is equal to 1, comprising:
when the total circulation times of the first block spectrum is larger than the target circulation times, the range of the block spectrum amplitude value is required to be enlarged;
when the total circulation times of the first block spectrum is smaller than the target circulation times, the range of the block spectrum amplitude value is required to be reduced;
when the load spectrum equivalent series is more than or equal to 2, the block spectrum amplitude range is adjusted to be the same as when the load spectrum equivalent series is equal to 1.
According to the application, through load spectrum equivalence of any series and target times, the load spectrum equivalent efficiency is improved, the equivalent load spectrum can be suitable for bench test, the bench test time is obviously shortened, and the labor cost is reduced.
Example III
Fig. 11 is a block diagram of a terminal according to an embodiment of the present application, and the terminal may be a terminal according to the above embodiment. The terminal 300 may be a portable mobile terminal such as: smart phone, tablet computer. The terminal 300 may also be referred to by other names of user equipment, portable terminals, etc.
In general, the terminal 300 includes: a processor 301 and a memory 302.
Processor 301 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 301 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 301 may also include a main processor, which is a processor for processing data in an awake state, also called a CPU (Central Processing Unit ), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 301 may integrate a GPU (Graphics Processing Unit, image processor) for rendering and drawing of content required to be displayed by the display screen. In some embodiments, the processor 301 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
Memory 302 may include one or more computer-readable storage media, which may be tangible and non-transitory. Memory 302 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 302 is used to store at least one instruction for execution by processor 301 to implement a load spectrum equivalent method provided in the present application.
In some embodiments, the terminal 300 may further optionally include: a peripheral interface 303, and at least one peripheral. Specifically, the peripheral device includes: at least one of radio frequency circuitry 304, touch screen 305, camera 306, audio circuitry 307, positioning component 308, and power supply 309.
The peripheral interface 303 may be used to connect at least one Input/Output (I/O) related peripheral to the processor 301 and the memory 302. In some embodiments, processor 301, memory 302, and peripheral interface 303 are integrated on the same chip or circuit board; in some other embodiments, either or both of the processor 301, the memory 302, and the peripheral interface 303 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.
The Radio Frequency circuit 304 is configured to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuitry 304 communicates with a communication network and other communication devices via electromagnetic signals. The radio frequency circuit 304 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 304 includes: antenna systems, RF transceivers, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, subscriber identity module cards, and so forth. The radio frequency circuitry 304 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: the world wide web, metropolitan area networks, intranets, generation mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuitry 304 may also include NFC (Near Field Communication ) related circuitry, which is not limiting of the application.
The touch display screen 305 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. The touch screen 305 also has the ability to collect touch signals at or above the surface of the touch screen 305. The touch signal may be input as a control signal to the processor 301 for processing. The touch screen 305 is used to provide virtual buttons and/or virtual keyboards, also known as soft buttons and/or soft keyboards. In some embodiments, the touch display 305 may be one, providing a front panel of the terminal 300; in other embodiments, the touch display 305 may be at least two, respectively disposed on different surfaces of the terminal 300 or in a folded design; in still other embodiments, the touch display 305 may be a flexible display disposed on a curved surface or a folded surface of the terminal 300. Even more, the touch display screen 305 may be arranged in an irregular pattern that is not rectangular, i.e., a shaped screen. The touch display 305 may be made of LCD (Liquid Crystal Display ), OLED (Organic Light-Emitting Diode) or other materials.
The camera assembly 306 is used to capture images or video. Optionally, the camera assembly 306 includes a front camera and a rear camera. In general, a front camera is used for realizing video call or self-photographing, and a rear camera is used for realizing photographing of pictures or videos. In some embodiments, the number of the rear cameras is at least two, and the rear cameras are any one of a main camera, a depth camera and a wide-angle camera, so as to realize fusion of the main camera and the depth camera to realize a background blurring function, and fusion of the main camera and the wide-angle camera to realize a panoramic shooting function and a Virtual Reality (VR) shooting function. In some embodiments, camera assembly 306 may also include a flash. The flash lamp can be a single-color temperature flash lamp or a double-color temperature flash lamp. The dual-color temperature flash lamp refers to a combination of a warm light flash lamp and a cold light flash lamp, and can be used for light compensation under different color temperatures.
Audio circuitry 307 is used to provide an audio interface between the user and terminal 300. The audio circuit 307 may include a microphone and a speaker. The microphone is used for collecting sound waves of users and environments, converting the sound waves into electric signals, and inputting the electric signals to the processor 301 for processing, or inputting the electric signals to the radio frequency circuit 304 for voice communication. For the purpose of stereo acquisition or noise reduction, a plurality of microphones may be respectively disposed at different portions of the terminal 300. The microphone may also be an array microphone or an omni-directional pickup microphone. The speaker is used to convert electrical signals from the processor 301 or the radio frequency circuit 304 into sound waves. The speaker may be a conventional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only the electric signal can be converted into a sound wave audible to humans, but also the electric signal can be converted into a sound wave inaudible to humans for ranging and other purposes. In some embodiments, the audio circuit 307 may also include a headphone jack.
The location component 308 is used to locate the current geographic location of the terminal 300 to enable navigation or LBS (Location Based Service, location-based services). The positioning component 308 may be a positioning component based on the United states GPS (Global Positioning System ), the Beidou system of China, or the Galileo system of Russia.
The power supply 309 is used to power the various components in the terminal 300. The power source 309 may be alternating current, direct current, disposable or rechargeable. When the power source 309 comprises a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
In some embodiments, the terminal 300 further includes one or more sensors 310. The one or more sensors 310 include, but are not limited to: acceleration sensor 311, gyroscope sensor 312, pressure sensor 313, fingerprint sensor 314, optical sensor 315, and proximity sensor 316.
The acceleration sensor 311 can detect the magnitudes of accelerations on three coordinate axes of the coordinate system established with the terminal 300. For example, the acceleration sensor 311 may be used to detect components of gravitational acceleration on three coordinate axes. The processor 301 may control the touch display screen 305 to display a user interface in a landscape view or a portrait view according to the gravitational acceleration signal acquired by the acceleration sensor 311. The acceleration sensor 311 may also be used for the acquisition of motion data of a game or a user.
The gyro sensor 312 may detect a body direction and a rotation angle of the terminal 300, and the gyro sensor 312 may collect 3D (three-dimensional) motion of the user to the terminal 300 in cooperation with the acceleration sensor 311. The processor 301 may implement the following functions according to the data collected by the gyro sensor 312: motion sensing (e.g., changing UI according to a tilting operation by a user), image stabilization at shooting, game control, and inertial navigation.
The pressure sensor 313 may be disposed at a side frame of the terminal 300 and/or at a lower layer of the touch screen 305. When the pressure sensor 313 is provided at the side frame of the terminal 300, a grip signal of the terminal 300 by a user may be detected, and left-right hand recognition or shortcut operation may be performed according to the grip signal. When the pressure sensor 313 is disposed at the lower layer of the touch screen 305, control of the operability control on the UI interface can be achieved according to the pressure operation of the user on the touch screen 305. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.
The fingerprint sensor 314 is used to collect a fingerprint of a user to identify the identity of the user based on the collected fingerprint. Upon recognizing that the user's identity is a trusted identity, the user is authorized by the processor 301 to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying for and changing settings, etc. The fingerprint sensor 314 may be provided on the front, back or side of the terminal 300. When a physical key or a manufacturer Logo is provided on the terminal 300, the fingerprint sensor 314 may be integrated with the physical key or the manufacturer Logo.
The optical sensor 315 is used to collect the ambient light intensity. In one embodiment, processor 301 may control the display brightness of touch screen 305 based on the intensity of ambient light collected by optical sensor 315. Specifically, when the intensity of the ambient light is high, the display brightness of the touch display screen 305 is turned up; when the ambient light intensity is low, the display brightness of the touch display screen 305 is turned down. In another embodiment, the processor 301 may also dynamically adjust the shooting parameters of the camera assembly 306 according to the ambient light intensity collected by the optical sensor 315.
A proximity sensor 316, also referred to as a distance sensor, is typically disposed on the front face of the terminal 300. The proximity sensor 316 is used to collect the distance between the user and the front of the terminal 300. In one embodiment, when the proximity sensor 316 detects a gradual decrease in the distance between the user and the front face of the terminal 300, the processor 301 controls the touch screen 305 to switch from the on-screen state to the off-screen state; when the proximity sensor 316 detects that the distance between the user and the front surface of the terminal 300 gradually increases, the processor 301 controls the touch display screen 305 to switch from the off-screen state to the on-screen state.
Those skilled in the art will appreciate that the structure shown in fig. 11 is not limiting of the terminal 300 and may include more or fewer components than shown, or may combine certain components, or may employ a different arrangement of components.
Example IV
In an exemplary embodiment, a computer readable storage medium is also provided, on which a computer program is stored which, when being executed by a processor, implements a load spectrum equivalent method as provided by all inventive embodiments of the present application.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Example five
In an exemplary embodiment, an application program product is also provided, comprising one or more instructions executable by the processor 301 of the above apparatus to perform a load spectrum equivalent method as described above.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. A load spectrum equivalent method, comprising:
respectively acquiring original load spectrum data of each pavement, cycle times of each pavement, equivalent target cycle times, allowable cycle times errors and equivalent series of load spectrums;
respectively determining original load spectrum pseudo-damage data and pseudo-damage data in each amplitude range according to the original load spectrum data of each road surface and the cycle times of each road surface;
determining the cycle times of each amplitude range according to the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range;
And determining the total circulation times of the block spectrum according to the circulation times of each amplitude range and the equivalent series of the load spectrum, judging whether the total circulation times of the block spectrum are smaller than the allowable error of the circulation times according to the difference value of the total circulation times of the block spectrum and the equivalent target circulation times, and outputting an equivalent load spectrum if the total circulation times of the block spectrum are smaller than the allowable error of the circulation times.
2. The load spectrum equivalent method as claimed in claim 1, wherein said determining the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range by the original load spectrum data of each road surface and the cycle number of each road surface respectively comprises:
obtaining original load spectrum pseudo damage data of each pavement through the original load spectrum data of each pavement; obtaining original load spectrum pseudo-damage data according to the original load spectrum pseudo-damage data of each road surface and the cycle times of each road surface;
obtaining the original grade-through counting result of each pavement through the original load spectrum data of each pavement;
obtaining a load amplitude range set according to the original grade passing counting result of each pavement and the cycle times of each pavement;
and obtaining pseudo damage data of each amplitude range according to the load amplitude range set.
3. A load spectrum equivalent method according to claim 2, wherein said determining the total number of cycles of the block spectrum from the number of cycles of each amplitude range and the load spectrum equivalent series comprises:
When the load spectrum equivalent series is equal to 1, determining a load amplitude range closest to the target circulation times according to the circulation times of each amplitude range, determining a block spectrum amplitude range according to the load amplitude range closest to the target circulation times, and determining a first block spectrum total circulation times according to the block spectrum amplitude range;
when the load spectrum equivalent series is equal to 2, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, wherein the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
determining first-stage block spectrum pseudo-damage data according to the pseudo-damage data of each amplitude range, and obtaining second-stage block spectrum total circulation times according to the circulation times of each amplitude range, the original load spectrum pseudo-damage data and the first-stage block spectrum pseudo-damage data;
when the load spectrum equivalent series is more than or equal to 3, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, and the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
according to the load amplitude range set, sequencing the load amplitude range set according to the amplitude range from high to low, and obtaining N amplitude ranges corresponding to the pseudo damage data of each amplitude range;
Obtaining circulation times corresponding to 2-N amplitude ranges according to the N amplitude ranges, optionally carrying out permutation and combination on N-1, sequencing and screening each permutation result according to the circulation times, and obtaining the total circulation times of a third block spectrum according to a formula (1) from the circulation times of each permutation result after screening
Wherein N is the number of cycles, and N is the total number of cycles of the third block spectrum.
4. A load spectrum equivalent method according to claim 3, characterized in that when the difference between the total number of cycles of the block spectrum and the equivalent target number of cycles is greater than the allowable error of the number of cycles, it comprises:
when the load spectrum equivalent series is equal to 1, comprising:
when the total circulation times of the first block spectrum is larger than the target circulation times, the range of the block spectrum amplitude value is required to be enlarged;
when the total circulation times of the first block spectrum is smaller than the target circulation times, the range of the block spectrum amplitude value is required to be reduced;
when the load spectrum equivalent series is more than or equal to 2, the block spectrum amplitude range is adjusted to be the same as when the load spectrum equivalent series is equal to 1.
5. A load spectrum equivalent device, comprising:
the data acquisition module is used for respectively acquiring original load spectrum data of each pavement, the circulation times of each pavement, the equivalent target circulation times, the allowable error of the circulation times and the equivalent series of the load spectrum;
The pseudo-damage data module is used for respectively determining original load spectrum pseudo-damage data and pseudo-damage data in each amplitude range according to the original load spectrum data of each road surface and the cycle times of each road surface;
the cycle number module is used for determining the cycle number of each amplitude range according to the original load spectrum pseudo-damage data and the pseudo-damage data of each amplitude range;
and the equivalent load spectrum module is used for determining the total circulation times of the block spectrum according to the circulation times of each amplitude range and the equivalent series of the load spectrum, judging whether the total circulation times of the block spectrum are smaller than the allowable error of the circulation times according to the difference value of the total circulation times of the block spectrum and the equivalent target circulation times, and outputting an equivalent load spectrum if the total circulation times of the block spectrum are smaller than the allowable error of the circulation times.
6. The load spectrum equivalent device of claim 5, wherein said pseudo-impairment data module is configured to:
obtaining original load spectrum pseudo damage data of each pavement through the original load spectrum data of each pavement; obtaining original load spectrum pseudo-damage data according to the original load spectrum pseudo-damage data of each road surface and the cycle times of each road surface;
obtaining the original grade-through counting result of each pavement through the original load spectrum data of each pavement;
obtaining a load amplitude range set according to the original grade passing counting result of each pavement and the cycle times of each pavement;
And obtaining pseudo damage data of each amplitude range according to the load amplitude range set.
7. The load spectrum equivalence method according to claim 6, wherein the equivalent load spectrum module is configured to:
when the load spectrum equivalent series is equal to 1, determining a load amplitude range closest to the target circulation times according to the circulation times of each amplitude range, determining a block spectrum amplitude range according to the load amplitude range closest to the target circulation times, and determining a first block spectrum total circulation times according to the block spectrum amplitude range;
when the load spectrum equivalent series is equal to 2, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, wherein the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
determining first-stage block spectrum pseudo-damage data according to the pseudo-damage data of each amplitude range, and obtaining second-stage block spectrum total circulation times according to the circulation times of each amplitude range, the original load spectrum pseudo-damage data and the first-stage block spectrum pseudo-damage data;
when the load spectrum equivalent series is more than or equal to 3, determining that the first-stage block spectrum amplitude is the maximum value and the minimum value of the penetrating grade count according to the original penetrating grade count result of each pavement, and the first-stage block spectrum circulation number is the minimum circulation number of the penetrating grade count;
According to the load amplitude range set, sequencing the load amplitude range set according to the amplitude range from high to low, and obtaining N amplitude ranges corresponding to the pseudo damage data of each amplitude range;
and (3) obtaining the circulation times corresponding to 2-N amplitude ranges according to the N amplitude ranges, optionally carrying out permutation and combination, sequencing and screening each permutation result according to the circulation times, and obtaining the total circulation times of the third block spectrum according to the circulation times of each screened permutation result by using a formula (1).
Wherein N is the number of cycles, and N is the total number of cycles of the third block spectrum.
8. The load spectrum equivalent device of claim 7, wherein said equivalent load spectrum module is configured to:
when the load spectrum equivalent series is equal to 1, comprising:
when the total circulation times of the first block spectrum is larger than the target circulation times, the range of the block spectrum amplitude value is required to be enlarged;
when the total circulation times of the first block spectrum is smaller than the target circulation times, the range of the block spectrum amplitude value is required to be reduced;
when the load spectrum equivalent series is more than or equal to 2, the block spectrum amplitude range is adjusted to be the same as when the load spectrum equivalent series is equal to 1.
9. A terminal, comprising:
one or more processors;
A memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
a load spectrum equivalent method as claimed in any one of claims 1 to 4 is performed.
10. A non-transitory computer readable storage medium, characterized in that instructions in said storage medium, when executed by a processor of a terminal, enable the terminal to perform a load spectrum equivalent method according to any one of claims 1 to 4.
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| CN202310947713.8A CN117030224A (en) | 2023-07-31 | 2023-07-31 | Load spectrum equivalent method, device, terminal and storage medium |
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