Method for predicting denudation rate of cable under action of atomic oxygen and ultraviolet synergistic effect

Abstract

The invention relates to a method for predicting the denudation rate of a cable under the action of an atomic oxygen and ultraviolet cooperative effect, and the method comprises the steps: selecting a cable under the action of the atomic oxygen and ultraviolet cooperative effect; performing an atomic oxygen and ultraviolet coordination effect test on the cable to obtain cable insulation denudation rate data under the action of the atomic oxygen and ultraviolet coordination effect; and establishing a prediction formula under the action of the atomic oxygen and ultraviolet cooperative effect according to the cable insulation denudation rate data. The cable insulation denudation rate of the cable under the action of long-term atomic oxygen and ultraviolet environment can be predicted, the test time is effectively shortened, the test efficiency is improved, and the test cost is saved; the method can be used for estimating the denudation characteristic of the cable used in the low earth orbit under the action of the atomic oxygen and ultraviolet coordination effect, and provides a basis for the reliability design of the cable in the low orbit.

Description

Technical Field

[0001] The present invention relates to the technical field of space environment engineering, and more specifically, to a method for predicting the erosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet rays. Background Art

[0002] The space environment is a severe test for spacecraft materials. It is an important factor that induces spacecraft anomalies and failures and affects its long-life and high-reliability operation in orbit. In the low-orbit environment (200km-700km), the oxidative corrosion of large flux atomic oxygen will cause serious damage to the exposed materials of the spacecraft, leading to corrosion, cracking and even shedding of the exposed materials of the spacecraft, causing performance degradation or failure of thermal control coatings, solar cell array insulation materials, optical payload lenses, etc. At the same time, the synergistic effect of atomic oxygen and ultraviolet radiation is also an important issue to be considered in material evaluation. Studies have shown that the simple superposition of single environmental factors on the ground is inconsistent with the actual performance degradation results suffered by the materials in orbit.

[0003] The atomic oxygen erosion rate is the most important parameter in the design of exposed materials for low-orbit spacecraft. Its physical meaning is the volume change caused by each oxygen atom hitting the material surface. Obtaining accurate atomic oxygen erosion rate data of the material can estimate the thickness loss of the material on orbit and provide a basis for the design of the material's resistance to the space environment. Due to the extension of the satellite's on-orbit design life, the corresponding ground simulation test time continues to increase. It usually takes several months of test time for the ground simulation test to reach the on-orbit atomic oxygen and ultraviolet cumulative action amount, and the test cycle and cost are relatively high. Summary of the invention

[0004] The embodiments of the present application provide a method for predicting the erosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet light. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0005] In a first aspect, the present application provides a method for predicting the corrosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet light, the method comprising:

[0006] Select cables under the synergistic effect of atomic oxygen and ultraviolet light;

[0007] Conducting an atomic oxygen and ultraviolet synergy effect test on the cable to obtain cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect;

[0008] A prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays is established based on the cable insulation stripping rate data.

[0009] According to a preferred embodiment, the selected cable has been vacuum treated after its surface has been cleaned with anhydrous ethanol, and the cable length is 60-90 cm.

[0010] According to a preferred embodiment, the test conditions of the atomic oxygen and ultraviolet synergy effect test are:

[0011] The atomic oxygen equivalent energy is 5 eV; the atomic oxygen flux rate is 1.0×10 20 AO / m 2 ·s; UV wavelength range is 200~400nm; UV acceleration factor is 4-5 times; different test points are set.

[0012] According to a preferred embodiment, the atomic oxygen and ultraviolet synergy effect test is performed on the cable to obtain the cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect, including:

[0013]

[0014] In the formula, E y is the cable insulation stripping rate, unit is m 3 / AO; G0 is the initial mass of the cable, in g; G n is the mass of the cable after the test, in g, n is the serial number of the test point; A is the exposed surface area of ​​the cable, in cm 2 ; ρ is the cable density, in g / cm 3 ; F is the cumulative flux of atomic oxygen, in units of AO / m 2 .

[0015] According to a preferred embodiment, the prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays is established based on the cable insulation stripping rate data, including:

[0016]

[0017] Where H, B, and τ are unknown parameters, which are obtained by fitting the experimental data.

[0018] In a second aspect, the present application provides a device for predicting the erosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet light, the device comprising:

[0019] Selection module, used to select cables under the atomic oxygen and ultraviolet synergy effect;

[0020] A test module, used for performing an atomic oxygen and ultraviolet synergy effect test on the cable to obtain cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect;

[0021] A module is established for establishing a prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays based on the cable insulation stripping rate data.

[0022] According to a preferred embodiment, the selected cable has been vacuum treated after its surface has been cleaned with anhydrous ethanol, and the cable length is 60-90 cm.

[0023] According to a preferred embodiment, the test conditions of the atomic oxygen and ultraviolet synergy effect test are:

[0024] The atomic oxygen equivalent energy is 5 eV; the atomic oxygen flux rate is 1.0×10 20 AO / m 2 ·s; UV wavelength range is 200~400nm; UV acceleration factor is 4-5 times; different test points are set.

[0025] According to a preferred embodiment, the test module comprises:

[0026]

[0027] In the formula, E y is the cable insulation stripping rate, unit is m 3 / AO; G0 is the initial mass of the cable, in g; G n is the mass of the cable after the test, in g, n is the serial number of the test point; A is the exposed surface area of ​​the cable, in cm 2 ; ρ is the cable density, in g / cm 3 ; F is the atomic oxygen cumulative flux, unit is AO / m 2 .

[0028] According to a preferred embodiment, the establishment module includes:

[0029]

[0030] Where H, B, and τ are unknown parameters, which are obtained by fitting the experimental data.

[0031] In a third aspect, the present application provides a computer storage medium, which stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the above-mentioned method steps.

[0032] In a fourth aspect, the present application provides a terminal, which may include: a processor and a memory; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the above-mentioned method steps.

[0033] The technical solution provided by this application may have the following beneficial effects:

[0034] In the present application, the cable erosion rate prediction method under the action of atomic oxygen and ultraviolet synergy effect is to select a cable under the action of atomic oxygen and ultraviolet synergy effect; to conduct atomic oxygen and ultraviolet synergy effect tests on the cable to obtain cable insulation erosion rate data under the action of atomic oxygen and ultraviolet synergy effect; to establish a prediction formula under the action of atomic oxygen and ultraviolet synergy effect based on the cable insulation erosion rate data. The present application can predict the cable insulation erosion rate of cables under the action of long-term atomic oxygen and ultraviolet environment, effectively shorten the test time, improve the test efficiency, and save the test cost; it can be used to predict the erosion characteristics of cables used in low earth orbit under the action of atomic oxygen and ultraviolet synergy effect, and provide a basis for the reliability design of cables in low orbit.

[0035] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0037] Figure 1 It is a flow chart of a method for predicting the erosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet light provided in an embodiment of the present application;

[0038] Figure 2 It is a curve diagram showing the relationship between the atomic oxygen cumulative flux of an ETFE cable and the cable insulation stripping rate, according to a cable stripping rate prediction method under the synergistic effect of atomic oxygen and ultraviolet light provided in an embodiment of the present application;

[0039] Figure 3 It is a structural schematic diagram of a device for predicting the erosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet light provided in an embodiment of the present application;

[0040] Figure 4 It is a structural diagram of a terminal provided in an embodiment of the present application.

[0041] Reference numerals:

[0042] 10000, select module, 20000, test module, 30000, establish module;

[0043] 1001. Processor, 1002. Communication bus, 1003. User interface, 1004. Network interface, 1005. Memory. DETAILED DESCRIPTION

[0044] The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them.

[0045] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples of systems and methods consistent with some aspects of the present invention as detailed in the attached claims.

[0047] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previously associated objects are in an "or" relationship.

[0048] The following will be combined with the attached Figure 1 and attached Figure 2 , a method for predicting the corrosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet light provided in an embodiment of the present application is introduced in detail.

[0049] See also Figure 1 and 2 The method of the embodiment of the present application may include the following steps:

[0050] This application proposes a method for predicting the cable insulation erosion rate under the combined effects of atomic oxygen and ultraviolet light. Through ground atomic oxygen and ultraviolet combined effects tests, multiple test points are selected, and a prediction formula is established based on a shorter period test by data extrapolation to predict the cable insulation erosion rate under the long-term combined effects of atomic oxygen and ultraviolet light. The details are as follows:

[0051] S100, select cables under the synergistic effect of atomic oxygen and ultraviolet light; select test cables, the selected cables have been vacuum treated after wiping the surface with anhydrous ethanol, and the general cable length is 60-90cm; the vacuum degree of vacuum treatment is better than 1.3×10 -3 Pa, the time is not less than 4h, and the initial mass of the cable is weighed after the treatment is completed.

[0052] S200, performing an atomic oxygen and ultraviolet synergy effect test on the cable to obtain cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect.

[0053] The cable is subjected to an atomic oxygen and ultraviolet synergy effect test, and the test conditions of the atomic oxygen and ultraviolet synergy effect test are as follows:

[0054] The atomic oxygen equivalent energy is 5 eV; the atomic oxygen flux rate is 1.0×10 20 AO / m 2 ·s; the ultraviolet wavelength range is 200-400nm; the ultraviolet acceleration factor is 4-5 times; different test points are set, and after the atomic oxygen cumulative flux and ultraviolet irradiation in the test reach the atomic oxygen set value and the ultraviolet irradiation set value respectively, the cable quality after the test is sampled and tested. The atomic oxygen set value and the ultraviolet irradiation set value are determined by dividing the atomic oxygen according to the total action of atomic oxygen and the ultraviolet irradiation according to the total action of ultraviolet irradiation, and for each test point, the ratio of the atomic oxygen completed test amount, i.e. the atomic oxygen cumulative flux, to the atomic oxygen total action is the same as the ratio of the ultraviolet completed test amount, i.e. the ultraviolet irradiation to the total action of ultraviolet irradiation. In order to obtain degradation curves of other degradations caused by atomic oxygen and ultraviolet irradiation, the atomic oxygen set value and the ultraviolet irradiation set value are generally not less than 5 points. For the selection of test points, please refer to the table below:

[0055] Table 1. Quality test point settings

[0056] Test Points Atomic oxygen cumulative flux UV radiation 1 <![CDATA[0.2×10 26 AU / m 2 ]]> 300ESH 2 <![CDATA[0.4×10 26 AU / m 2 ]]> 600ESH 3 <![CDATA[0.6×10 26 AU / m 2 ]]> 900ESH 4 <![CDATA[0.8×10 26 AU / m 2 ]]> 1200ESH 5 <![CDATA[1.0×10 26 AU / m 2 ]]> 1500ESH

[0057] In S200, the atomic oxygen and ultraviolet synergy effect test is performed on the cable to obtain the cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect, including:

[0058] Calculate the cable insulation stripping rate under different atomic oxygen and ultraviolet synergy:

[0059]

[0060] In the formula, E y is the cable insulation stripping rate, i.e. the reaction rate, in m 3 / AO; G0 is the initial mass of the cable, in g; G n is the mass of the cable after the test, in g, n is the serial number of the test point; A is the exposed surface area of ​​the cable, in cm 2 ; ρ is the cable density, in g / cm 3 ; F is the atomic oxygen cumulative flux, unit is AO / m 2 .

[0061] S300, establishing a prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays according to the cable insulation stripping rate data, including:

[0062] Taking a certain type of ETFE cable test as an example, the cable insulation stripping rate data obtained from the test is:

[0063] Table 2. Calculation results of cable insulation stripping rate

[0064] Test Points Atomic oxygen cumulative flux UV radiation Cable insulation stripping rate 1 <![CDATA[0.2×10 26 AU / m 2 ]]> 300ESH <![CDATA[1.93×10 -30 m 3 / AO]]> 2 <![CDATA[0.4×10 26 AU / m 2 ]]> 600ESH <![CDATA[1.22×10 -30 m 3 / AO]]> 3 <![CDATA[0.6×10 26 AU / m 2 ]]> 900ESH <![CDATA[1.11×10 -30 m 3 / AO]]> 4 <![CDATA[0.8×10 26 AU / m 2 ]]> 1200ESH <![CDATA[1.06×10 -30 m 3 / AO]]> 5 <![CDATA[1.0×10 26 AU / m 2 ]]> 1500ESH <![CDATA[1.05×10 -30 m 3 / AO]]>

[0065] It can be seen from Table 2 that the main factor causing material corrosion is atomic oxygen. Therefore, a prediction formula is established with the atomic oxygen cumulative flux as the independent variable and the cable insulation corrosion rate as the dependent variable. Ultraviolet is used as the background radiation environment, and the prediction formula is:

[0066]

[0067] Where H, B, and τ are unknown parameters, which are obtained by fitting the experimental test results, and e represents a natural constant.

[0068] According to the test results in Table 2, the data fitting and solution are performed to obtain the prediction formula of ETFE cable insulation stripping rate:

[0069]

[0070] Before applying ETFE cable 1.0×10 26 AO / m 2 The experimental data were used to establish a predictive model and compared with the 2.5×10 26 AO / m 2 The predicted value and measured value are compared. The results show that the predicted deviation of the prediction model is within 5%, which proves the effectiveness of the prediction model and meets the engineering needs of material evaluation and assessment.

[0071] The predictive formula can be called an extrapolation formula or a predictive model. Figure 2 The relationship between the atomic oxygen cumulative flux of ETFE cable and the cable insulation stripping rate under 200-400nm ultraviolet irradiation is demonstrated.

[0072] In the present application, the cable erosion rate prediction method under the action of atomic oxygen and ultraviolet synergy effect is to select a cable under the action of atomic oxygen and ultraviolet synergy effect; to conduct atomic oxygen and ultraviolet synergy effect tests on the cable to obtain cable insulation erosion rate data under the action of atomic oxygen and ultraviolet synergy effect; to establish a prediction formula under the action of atomic oxygen and ultraviolet synergy effect based on the cable insulation erosion rate data. The present application can predict the cable insulation erosion rate of cables under the action of long-term atomic oxygen and ultraviolet environment, effectively shorten the test time, improve the test efficiency, and save the test cost; it can be used to predict the erosion characteristics of cables used in low earth orbit under the action of atomic oxygen and ultraviolet synergy effect, and provide a basis for the reliability design of cables in low orbit.

[0073] The following are embodiments of the device of the present invention, which can be used to implement the method embodiments of the present invention. For details not disclosed in the device embodiments of the present invention, please refer to the method embodiments of the present invention.

[0074] See also Figure 3 , which shows a schematic structural diagram of a cable erosion rate prediction device under the synergistic effect of atomic oxygen and ultraviolet light provided by an exemplary embodiment of the present invention. The device includes: a selection module 10000, a test module 20000 and a creation module 30000.

[0075] Selection module 10000, used to select cables under the synergistic effect of atomic oxygen and ultraviolet;

[0076] The test module 20000 is used to perform an atomic oxygen and ultraviolet synergy effect test on the cable to obtain cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect;

[0077] Establishing module 30000, for establishing a prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays according to the cable insulation stripping rate data.

[0078] According to a preferred embodiment, the selected cable has been vacuum treated after its surface has been cleaned with anhydrous ethanol, and the cable length is 60-90 cm.

[0079] According to a preferred embodiment, the test conditions of the atomic oxygen and ultraviolet synergy effect test are:

[0080] The atomic oxygen equivalent energy is 5 eV; the atomic oxygen flux rate is 1.0×10 20 AO / m 2 ·s; UV wavelength range is 200~400nm; UV acceleration factor is 4-5 times; different test points are set.

[0081] According to a preferred embodiment, the test module 20000 comprises:

[0082]

[0083] In the formula, E y is the cable insulation stripping rate, unit is m 3 / AO; G0 is the initial mass of the cable, in g; G n is the mass of the cable after the test, in g, n is the serial number of the test point; A is the exposed surface area of ​​the cable, in cm 2 ; ρ is the cable density, in g / cm 3 ; F is the cumulative flux of atomic oxygen, in units of AO / m 2 .

[0084] According to a preferred embodiment, the establishment module 30000 includes:

[0085]

[0086] Where H, B, and τ are unknown parameters, which are obtained by fitting the experimental data.

[0087] It should be noted that the device for predicting the cable's erosion rate under the effects of atomic oxygen and ultraviolet rays provided in the above-mentioned embodiment only uses the division of the above-mentioned functional modules as an example when executing the method for predicting the cable's erosion rate under the effects of atomic oxygen and ultraviolet rays. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the device for predicting the cable's erosion rate under the effects of atomic oxygen and ultraviolet rays provided in the above-mentioned embodiment and the method for predicting the cable's erosion rate under the effects of atomic oxygen and ultraviolet rays belong to the same concept. The implementation process thereof is detailed in the method embodiment, which will not be repeated here.

[0088] In the present application, the cable erosion rate prediction device under the action of atomic oxygen and ultraviolet synergy effect selects a cable under the action of atomic oxygen and ultraviolet synergy effect; performs atomic oxygen and ultraviolet synergy effect tests on the cable to obtain cable insulation erosion rate data under the action of atomic oxygen and ultraviolet synergy effect; and establishes a prediction formula under the action of atomic oxygen and ultraviolet synergy effect based on the cable insulation erosion rate data. The present application can predict the cable insulation erosion rate of a cable under the action of long-term atomic oxygen and ultraviolet environment, effectively shortening the test time, improving the test efficiency, and saving the test cost; it can be used to predict the erosion characteristics of cables used in low earth orbit under the action of atomic oxygen and ultraviolet synergy effect, and provide a basis for the reliability design of cables in low orbit.

[0089] The present invention also provides a computer-readable medium having program instructions stored thereon, which, when executed by a processor, implements the method for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet light provided in the above-mentioned method embodiments.

[0090] The present invention also provides a computer program product containing instructions, which, when running on a computer, enables the computer to execute the method for predicting the cable corrosion rate under the synergistic effect of atomic oxygen and ultraviolet rays in the above-mentioned various method embodiments.

[0091] See also Figure 4 , which is a schematic diagram of the structure of a terminal according to an embodiment of the present application. The terminal may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, a memory 1005, and at least one communication bus 1002.

[0092] The communication bus 1002 is used to realize the connection and communication between these components.

[0093] The user interface 1003 may include a display screen (Display) and a camera (Camera), and the optional user interface 1003 may also include a standard wired interface and a wireless interface.

[0094] The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0095] Among them, the processor 1001 may include one or more processing cores. The processor 1001 uses various interfaces and lines to connect various parts in the entire terminal, and executes various functions of the terminal and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 1005, and calling data stored in the memory 1005. Optionally, the processor 1001 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 1001 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 1001, and it can be implemented separately through a chip.

[0096] Among them, the memory 1005 may include a random access memory (Random Access Memory, RAM) and may also include a read-only memory (Read-Only Memory). Optionally, the memory 1005 includes a non-transitory computer-readable storage medium. The memory 1005 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 1005 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 1005 may optionally be at least one storage device located away from the aforementioned processor 1001. As Figure 4 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an application program for predicting the corrosion rate of cables under the synergistic effect of atomic oxygen and ultraviolet rays.

[0097] exist Figure 4In the terminal shown, the user interface 1003 is mainly used to provide an input interface for the user and obtain the data input by the user; and the processor 1001 can be used to call the cable erosion rate prediction application under the atomic oxygen and ultraviolet synergy effect stored in the memory 1005, and specifically perform the following operations:

[0098] Selecting cables under the synergistic effect of atomic oxygen and ultraviolet light; the selected cables have been vacuum treated after wiping the surface with anhydrous ethanol, and the cable length is 60-90 cm;

[0099] The cable is subjected to an atomic oxygen and ultraviolet synergy effect test to obtain cable insulation stripping rate data under the action of the atomic oxygen and ultraviolet synergy effect; the test conditions of the atomic oxygen and ultraviolet synergy effect test are: the atomic oxygen equivalent energy is 5 eV; the atomic oxygen flux rate is 1.0×10 20 AO / m 2 ·s; UV wavelength range is 200~400nm; UV acceleration factor is 4-5 times; set different test points;

[0100] A prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays is established based on the cable insulation stripping rate data.

[0101] In one embodiment, when the processor 1001 performs the atomic oxygen and ultraviolet synergy effect test on the cable to obtain the cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect, the processor 1001 specifically performs the following operations:

[0102]

[0103] In the formula, E y is the cable insulation stripping rate, unit is m 3 / AO; G0 is the initial mass of the cable, in g; G n is the mass of the cable after the test, in g, n is the serial number of the test point; A is the exposed surface area of ​​the cable, in cm 2 ; ρ is the cable density, in g / cm 3 ; F is the atomic oxygen cumulative flux, unit is AO / m 2 .

[0104] In one embodiment, when the processor 1001 executes the prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays based on the cable insulation stripping rate data, the processor 1001 specifically performs the following operations:

[0105]

[0106] Where H, B, and τ are unknown parameters, which are obtained by fitting the experimental data.

[0107] In the present application, the cable erosion rate prediction method under the action of atomic oxygen and ultraviolet synergy effect is to select a cable under the action of atomic oxygen and ultraviolet synergy effect; to conduct atomic oxygen and ultraviolet synergy effect tests on the cable to obtain cable insulation erosion rate data under the action of atomic oxygen and ultraviolet synergy effect; to establish a prediction formula under the action of atomic oxygen and ultraviolet synergy effect based on the cable insulation erosion rate data. The present application can predict the cable insulation erosion rate of cables under the action of long-term atomic oxygen and ultraviolet environment, effectively shorten the test time, improve the test efficiency, and save the test cost; it can be used to predict the erosion characteristics of cables used in low earth orbit under the action of atomic oxygen and ultraviolet synergy effect, and provide a basis for the reliability design of cables in low orbit.

[0108] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0109] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A method for predicting the erosion rate of a cable under the synergistic effect of atomic oxygen and ultraviolet, characterized in that: The following steps are involved: Select cables under the synergistic effect of atomic oxygen and ultraviolet light; Conducting an atomic oxygen and ultraviolet synergy effect test on the cable to obtain cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect; A prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays is established based on the cable insulation stripping rate data.

2. The method for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 1 is characterized in that: The selected cables have been vacuum treated after wiping the surface with anhydrous ethanol, and the cable length is 60-90 cm.

3. The method for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 1 is characterized in that: The test conditions of the atomic oxygen and ultraviolet synergy effect test are: The atomic oxygen equivalent energy is 5 eV; the atomic oxygen flux rate is 1.0×10 20 AO / m 2 ·s; UV wavelength range is 200~400nm; UV acceleration factor is 4-5 times; different test points are set.

4. The method for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 3 is characterized in that: The atomic oxygen and ultraviolet synergy effect test is performed on the cable to obtain the cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect, including: In the formula, E y is the cable insulation stripping rate, unit is m 3 / AO; G0 is the initial mass of the cable, in g; G n is the mass of the cable after the test, in g, n is the serial number of the test point; A is the exposed surface area of ​​the cable, in cm 2 ; ρ is the cable density, in g / cm 3 ; F is the cumulative flux of atomic oxygen, in units of AO / m 2 .

5. The method for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 4 is characterized in that: The prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays is established based on the cable insulation stripping rate data, including: Where H, B, and τ are unknown parameters, which are obtained by fitting the experimental data.

6. A device for predicting the erosion rate of a cable under the combined effect of atomic oxygen and ultraviolet, characterized in that: include: Selection module, used to select cables under the atomic oxygen and ultraviolet synergy effect; A test module, used for performing an atomic oxygen and ultraviolet synergy effect test on the cable to obtain cable insulation stripping rate data under the atomic oxygen and ultraviolet synergy effect; A module is established for establishing a prediction formula under the synergistic effect of atomic oxygen and ultraviolet rays based on the cable insulation stripping rate data.

7. The device for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 6, characterized in that: The selected cables have been vacuum treated after wiping the surface with anhydrous ethanol, and the cable length is 60-90 cm.

8. The device for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 6, characterized in that: The test conditions of the atomic oxygen and ultraviolet synergy effect test are: The atomic oxygen equivalent energy is 5 eV; the atomic oxygen flux rate is 1.0×10 20 AO / m 2 ·s; UV wavelength range is 200~400nm; UV acceleration factor is 4-5 times; different test points are set.

9. The device for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 8, characterized in that: The test module comprises: In the formula, E y is the cable insulation stripping rate, unit is m 3 / AO; G0 is the initial mass of the cable, in g; G n is the mass of the cable after the test, in g, n is the serial number of the test point; A is the exposed surface area of ​​the cable, in cm 2 ; ρ is the cable density, in g / cm 3 ; F is the cumulative flux of atomic oxygen, in units of AO / m 2 .

10. A device for predicting the cable erosion rate under the synergistic effect of atomic oxygen and ultraviolet according to claim 9, characterized in that: The establishment module comprises: Where H, B, and τ are unknown parameters, which are obtained by fitting the experimental data.

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