Ground testing method and system for inter-cabin cable interference of double super platform
By constructing a constraint connection structure and a three-dimensional measurement coordinate system in the dual super platform cabin cable test, tensile values are collected in real time, displacement tests are performed, and displacement-tension response models are built, which solves the problems of high cost, low efficiency and low accuracy in the existing technology, and realizes simple and low-cost cable interference testing and accurate stiffness measurement.
Patent Information
- Application Number
- CN202510419284.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2025-08-26
AI Technical Summary
The existing technology has problems of high cost, low efficiency and low accuracy in the dual-super platform cabin intercable cable interference test, and cannot effectively compensate for the control effect.
By establishing a constraint connection structure at both ends of the test cable group, building an orthogonal three-dimensional measurement coordinate system, setting sensors, collecting cable tension values in real time, performing positive and negative coordinated displacement tests, building a displacement-tension response model, and verifying the effectiveness of the test system through sensor data consistency.
It realizes simple and low-cost dual-super platform cabin cable interference testing, provides an accurate cable stiffness measurement foundation, laying the foundation for compensation control.
Smart Images

Figure CN120538722A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of spacecraft technology, and in particular relates to a ground testing method and system for cable interference between cabins of a dual-super platform. Background Art
[0002] The "Dual Super" satellite platform can achieve the separation of the payload cabin and the platform cabin, dynamic and static isolation, and master-slave coordinated control. In an ideal dual super platform, the payload cabin and the platform cabin are completely physically separated.
[0003] Currently, limited by the development of satellite wireless power and information transmission technologies, inter-cabin cables are still required to transmit energy and information between the two modules. The presence of inter-cabin cables affects platform control performance by slowing convergence and reducing control accuracy, so compensation is needed.
[0004] Researchers have achieved the following results in testing cable interference on dual-super platforms:
[0005] Patent document CN111504582B discloses a novel method and system for measuring the stiffness of flexible cables. This solution utilizes an air-floating platform to create a weightless environment, dynamically model the motion chamber, output steady-state control forces and torques, and collect the beneficial torque at the cable end of the fixed chamber to calculate the cable stiffness. This solution utilizes ground-based air-floating platform experiments, which are costly and inefficient, a problem that urgently needs to be addressed.
[0006] Patent document CN110095241B discloses a method for testing and measuring the stiffness of cables between separate spacecraft cabins. This method uses a linear voice coil motor to simulate microvibrations in the platform cabin, and a fiber optic gyroscope and linear accelerometer in the payload cabin to measure the response. This method calculates the cable stiffness and determines the optimal layout. The test equipment used is common in the aerospace field and is easy to implement. However, this method uses a ground-based air-floating platform test method, which is costly and inefficient, a problem that urgently needs to be addressed.
[0007] Patent document CN113324714A discloses an on-orbit method and system for measuring the stiffness of the inter-cabin cable between dual-supersatellites. This solution places the satellite payload compartment in a non-collision-free equilibrium position, analyzes gyroscopic telemetry data, and uses the resonant frequency as the resonant frequency of the inter-cabin cable. This solution relies on on-orbit observation and processing of gyroscopic telemetry data, which results in low accuracy and limited usability, a problem that urgently needs to be addressed.
[0008] The tests on other cables yielded the following results:
[0009] Patent document CN117848867A discloses a testing device, method, and application for accurately and quantitatively measuring cable bending stiffness. This device and method comprise a base, a fixed bracket, a rolling assembly, and a force measuring unit. The force measuring unit is connected to a cable specimen to measure the cable bending stiffness. However, this solution is not suitable for ground testing of cable interference between cabins on a dual-super-platform platform, a problem that urgently needs to be addressed.
[0010] Patent document CN118730756A discloses an automatic load-applying and measurement device for cable bending stiffness testing. This device comprises an automatic load-applying and measurement module and an automatic span and deflection measurement module. These modules work together to automatically measure the bending stiffness of tensioned cables. However, this solution is not suitable for ground-based testing of inter-cabin cable interference on dual-super-platform platforms, a problem that urgently needs to be addressed.
[0011] Patent document CN119573958A discloses a device for measuring the torque and tension of cables onboard dual supersatellites. The device comprises a gravity-balancing balloon, a displacement device, and a force sensor. The displacement device includes at least two motion platforms, with the ends of the cable under test connected to two different motion platforms. The gravity-balancing balloon is used to unload the gravity acting on the cable under test, simulating a weightless environment. At least one force sensor is mounted on each motion platform to measure the torque and / or tension generated by the cable under test. The device utilizes a perforated mounting plate, offering flexibility and ease of disassembly, capable of simulating various cable bending conditions. By operating the motion platform, changes in cable force caused by slight displacements and deformations in the structure and mechanism can be simulated. The force sensor has high measurement accuracy and convenient data recording, enabling torque and tension measurements for inter-cabin cable connections on dual supersatellites. Summary of the Invention
[0012] In view of the defects in the prior art, the purpose of the present invention is to provide a dual super platform inter-cabin cable interference ground testing method and system.
[0013] According to the present invention, a dual-super platform inter-cabin cable interference ground testing method is provided, comprising:
[0014] Step S1: establishing a constrained connection structure at both ends of a test cable group, wherein the cable group includes multiple types of functional cables;
[0015] Step S2: constructing an orthogonal three-dimensional measurement coordinate system, setting sensors at both ends of the cable group, and collecting the tension value of the cable at the preset position in real time by changing the posture of the two ends of the cable group;
[0016] Step S3: Perform a forward coordinated displacement test to coordinately displace the cable end along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, obtain forward data, and restore to the initial position;
[0017] Step S4: Perform a negative coordinated displacement test, causing the cable end to be coordinated and displaced along the negative direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, obtain negative data, and restore to the initial position;
[0018] Step S5: Group the cables of the same type and re-execute the forward coordinated displacement test, so that the cable ends are coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to the preset step length, obtain grouped data, and restore to the initial position;
[0019] Step S6: Analyze and fit the positive data, negative data, and grouped data as mechanical data, construct a displacement-tension response model, verify the effectiveness of the test system through the consistency of sensor data, and output the test results.
[0020] Preferably, the multiple types of functional cables include: optical fibers, power cables and communication cables;
[0021] There are 2 optical fibers, 11 power cables, and 11 communication cables.
[0022] In the step S2, the orthogonal three-dimensional measurement coordinate system is formed, wherein the X-axis corresponds to the horizontal direction, the Y-axis corresponds to the normal direction perpendicular to the installation surface, and the Z-axis corresponds to the vertical height direction.
[0023] Preferably, in step S2, one end of the two ends of the cable group is connected to the lower platform of the mobile platform, and the other end is connected to the upper platform of the mobile platform; the lower platform of the mobile platform can move relative to each other along the X-axis, Y-axis and Z-axis of the orthogonal three-dimensional measurement coordinate system; the position of the two ends of the cable group is changed by moving the lower platform; the position of the upper platform of the mobile platform is fixed;
[0024] In step S3, the displacement is coordinated according to a preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm;
[0025] In step S4, the displacement is coordinated according to a preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm;
[0026] The displacement value of the initial state is 0.
[0027] Preferably, the step S5 includes:
[0028] Step S5.1: Performing the forward coordinated displacement test on all optical fibers individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, to obtain optical fiber data as grouped data;
[0029] Step S5.2: Performing the forward coordinated displacement test on all communication cables individually, causing the cable ends to be cooperatively displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to a preset step size, to obtain communication cable data as grouped data;
[0030] Step S5.3: Perform the forward coordinated displacement test on all power cables individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to a preset step size, to obtain power cable data as grouped data;
[0031] Step S5.4: Bundle all optical fibers, power cables, and communication cables into bundles with a spacing of 1 cm, and perform the forward collaborative displacement test to make the cable ends collaboratively displace one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to the preset step size to obtain comparison data as grouped data.
[0032] Preferably, in S6, the positive data, negative data and grouped data as mechanical data are analyzed and fitted to construct a displacement-tension response model, and the mathematical expression is:
[0033] F=-kΔx
[0034] Where F represents the cable tension, k represents the cable tension coefficient, and Δx represents the cable displacement.
[0035] In step S6, the validity of the test system is verified by the consistency of the sensor data, that is, the positive data, the negative data and the k value calculated by the two sets of data are compared to determine whether the two sets of data and the obtained k value are consistent in size and opposite in direction; if the result is yes, the validity is satisfied; if the result is no, the validity is not satisfied, the measurement experiment is terminated, and the problem is checked.
[0036] According to the present invention, a dual-super-platform inter-cabin cable interference ground measurement system is provided, comprising:
[0037] Module M1: Establishing a constrained connection structure at both ends of a test cable group, wherein the cable group includes multiple types of functional cables;
[0038] Module M2: Constructs an orthogonal three-dimensional measurement coordinate system, sets sensors at both ends of the cable group, and collects the cable tension value at the preset position in real time by changing the posture of the two ends of the cable group;
[0039] Module M3: Performs a forward coordinated displacement test, causing the cable end to move in a coordinated manner along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, obtains forward data, and returns to the initial position;
[0040] Module M4: Performs a negative coordinated displacement test, causing the cable end to be displaced in the negative direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis in a coordinated manner according to preset step sizes, obtains negative data, and returns to the initial position;
[0041] Module M5: Group the cables of the same type and re-execute the forward coordinated displacement test, so that the cable ends are coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to the preset step length, obtain group data, and restore to the initial position;
[0042] Module M6: Analyze and fit the positive data, negative data and grouped data as mechanical data, build a displacement-tension response model, verify the effectiveness of the test system through sensor data consistency, and output test results.
[0043] Preferably, the multiple types of functional cables include: optical fibers, power cables and communication cables;
[0044] There are 2 optical fibers, 11 power cables, and 11 communication cables.
[0045] In the module M2, the orthogonal three-dimensional measurement coordinate system, wherein the X-axis corresponds to the horizontal direction, the Y-axis corresponds to the normal direction perpendicular to the installation surface, and the Z-axis corresponds to the vertical height direction.
[0046] Preferably, in the module M2, one end of the two ends of the cable group is connected to the lower platform of the mobile platform, and the other end is connected to the upper platform of the mobile platform; the lower platform of the mobile platform can move relative to each other along the X-axis, Y-axis and Z-axis of the orthogonal three-dimensional measurement coordinate system; the posture of the two ends of the cable group can be changed by moving the lower platform; the position of the upper platform of the mobile platform is fixed;
[0047] In the module M3, the displacement is coordinated according to the preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm;
[0048] In the module M4, the displacement is coordinated according to the preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm;
[0049] The displacement value of the initial state is 0.
[0050] Preferably, the module M5 includes:
[0051] Module M5.1: Perform the forward coordinated displacement test on all optical fibers individually, causing the cable ends to be coordinated and displaced one by one along the positive Z-axis, the positive X-axis, and the positive Y-axis according to preset step sizes, to obtain optical fiber data as grouped data;
[0052] Module M5.2: Perform the forward coordinated displacement test on all communication cables individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, to obtain communication cable data as grouped data;
[0053] Module M5.3: Perform the forward coordinated displacement test on all power cables individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, to obtain power cable data as grouped data;
[0054] Module M5.4: Bundle all optical fibers, power cables, and communication cables in separate bundles, spaced 1 cm apart. Perform the forward coordinated displacement test, displacing the cable ends in the positive Z-axis, X-axis, and Y-axis directions, one by one, in a coordinated manner according to preset step sizes. Comparison data is obtained as grouped data.
[0055] Preferably, in the module M6, the positive data, negative data and grouped data as mechanical data are analyzed and fitted to construct a displacement-tension response model, and the mathematical expression is:
[0056] F=-kΔx
[0057] Where F represents the cable tension, k represents the cable tension coefficient, and Δx represents the cable displacement.
[0058] In the module M6, the validity of the test system is verified by the consistency of sensor data, that is, the positive data, the negative data and the k value calculated by the two sets of data are compared to determine whether the two sets of data and the obtained k value are consistent in size and opposite in direction; if the result is yes, the validity is satisfied; if the result is no, the validity is not satisfied, the measurement experiment is terminated, and the problem is checked.
[0059] Compared with the prior art, the present invention has the following beneficial effects:
[0060] 1. The present invention measures the interference of the cables between the dual-super platform cabins through a test device, which has the advantages of being simple, easy to operate and convenient compared with other methods.
[0061] 2. In terms of data processing, the present invention can calculate the cable stiffness by only using Hu Ke's theorem. Compared with other methods, the principle is simple and the calculation amount is small.
[0062] 3. The present invention uses a mechanical sensor commonly used in the aerospace field to measure the inter-cabin cable interference by hanging it up and down. It can be flexibly applied to various forms of dual-super platform inter-cabin cable interference estimation, providing a basis for compensation control.
[0063] 4. Compared with other methods, the present invention adopts an inter-cabin cable suspension test method, which utilizes a very simple and common measurement device and a concise data processing method to measure the inter-cabin cable interference of the dual super platform, thereby serving as the basis for compensation control. BRIEF DESCRIPTION OF THE DRAWINGS
[0064] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0065] Figure 1 A schematic flow chart of the testing method provided by the present invention;
[0066] Figure 2 A schematic diagram of the cable bundling method provided by the present invention;
[0067] Figure 3 A diagram showing the cable suspension method, overall test setup, and coordinate system definition provided by the present invention; (a) shows the cable suspension method, and (b) shows the overall test setup and coordinate system;
[0068] Figure 4 This is the cable splitting test layout diagram provided by the present invention. DETAILED DESCRIPTION
[0069] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.
[0070] In a first embodiment, a ground test method for inter-cabin cable interference of a dual-super platform is provided according to the present invention, comprising:
[0071] Step S1: Bundle the cables under test at both ends. In this test, 24 cables are included.
[0072] Step S2: Establish a measurement coordinate system and specify the positive directions of the X, Y, and Z axes;
[0073] Step S3: Connecting both ends of the cable to the sensors, changing the relative positions between the sensors, and measuring the tension of the cable at different positions;
[0074] Step S4: Adjust the Z axis upward, the X axis rightward, and the Y axis toward the wall, 2 mm at a time, from 0 to 12 mm;
[0075] Step S5: Adjust the Z axis downward, the X axis rightward, and the Y axis toward the wall, 2 mm at a time, from 0 to 12 mm;
[0076] Step S6: Use tape to fix the cable to the test device and repeat S4;
[0077] Step S7: Test two optical fibers, as in step 4;
[0078] Step S8: Test 11 power cables according to step 4;
[0079] Step S9: Test 11 communication cables according to step 4;
[0080] Step S10: Bundle the optical fiber, power cable, and communication cable into bundles with a spacing of 1 cm, and proceed as in step 4;
[0081] Step S11: Data processing and analysis.
[0082] Specifically, in S11, the positive data, negative data and grouped data as mechanical data are analyzed and fitted to construct a displacement-tension response model, and the mathematical expression is:
[0083] F=-kΔx
[0084] Where F represents the cable tension, k represents the cable tension coefficient, and Δx represents the cable displacement.
[0085] In step S11, the validity of the test system is verified by the consistency of sensor data, that is, the positive data, the negative data and the k value calculated by the two sets of data are compared to determine whether the two sets of data and the obtained k value are consistent in size, that is, the error does not exceed 0.001 and the direction is opposite; if the result is yes, the validity is satisfied; if the result is no, the validity is not satisfied, the measurement experiment is terminated, and the problem is checked.
[0086] Specifically, the order requirements for adjusting the Z axis, X axis and Y axis should meet the requirements of each group of adjustment methods and sequences.
[0087] Specifically, the dual-super-platform inter-cabin cable interference ground testing method includes:
[0088] Step 1: This test includes 24 cables, including 2 optical fibers, 11 power cables, and 11 communication cables. Bundle the test cables at both ends, as shown in the following example: Figure 2 shown.
[0089] Figure 2The cable bundling method is demonstrated, in which the communication cable, power cable, and optical fiber are aligned in the middle and the two ends are freely stretched. The communication cable and power cable are bundled with tape about 1 cm at both ends. After bundling, the cables are naturally bent into a C shape.
[0090] Step 2: Establish a measurement coordinate system. The X axis is horizontal, the Y axis is pointing toward the wall, and the Z axis is vertical. Figure 3 shown.
[0091] Figure 3 (a) is a cable suspension method. Specifically, communication cables, power cables, and optical fibers are bundled into a bundle and suspended between the measurement devices.
[0092] Figure 3 (b) A coordinate system is defined in which the direction from the origin pointing perpendicular to the wall in the figure is +Y, the direction perpendicular to the horizon pointing to the sky is +Z, and the +X direction follows the right-hand rule.
[0093] Step 3. Connect both ends of the cable to the sensor and change the relative distance between the sensors. Specifically, in the embodiment, the lower platform is moved. Due to the limitations of the test conditions, only the lower side can move along the X-axis, Y-axis, and Z-axis, but not the upper side. This allows the lower side to move along a certain coordinate axis, and the sensor measures the force exerted on the cable at different positions.
[0094] Step 4. Adjust the Z axis upwards by 2mm each time, from 0 to 12mm; adjust the X axis to the right by 2mm each time, from 0 to 12mm; adjust the Y axis toward the wall by 2mm each time, from 0 to 12mm.
[0095] Step 5. Repeat step 4 and adjust the Z axis downward by 2mm each time, from 0 to 12mm; adjust the X axis to the right by 2mm each time, from 0 to 12mm; and adjust the Y axis toward the wall by 2mm each time, from 0 to 12mm.
[0096] Step 6. As a control group for step 4, use tape to fix the cable to the test device. Adjust the Z axis upward by 2 mm at a time, from 0 to 12 mm; adjust the X axis rightward by 2 mm at a time, from 0 to 12 mm; and adjust the Y axis toward the wall by 2 mm at a time, from 0 to 12 mm.
[0097] Step 7: Test two optical fibers. Adjust the Z axis upward by 2 mm at a time, from 0 to 12 mm. Adjust the X axis rightward by 2 mm at a time, from 0 to 12 mm. Adjust the Y axis toward the wall by 2 mm at a time, from 0 to 12 mm.
[0098] Step 8: Test 11 power cables. Adjust the Z axis upward by 2 mm at a time, from 0 to 12 mm. Adjust the X axis rightward by 2 mm at a time, from 0 to 12 mm. Adjust the Y axis toward the wall by 2 mm at a time, from 0 to 12 mm.
[0099] Step 9: Test 11 signal cables. Adjust the Z axis upward by 2 mm at a time, from 0 to 12 mm. Adjust the X axis rightward by 2 mm at a time, from 0 to 12 mm. Adjust the Y axis toward the wall by 2 mm at a time, from 0 to 12 mm.
[0100] Step 10: Bundle the optical fiber, power cable, and signal cable into a bundle, with a spacing of 1 cm. The layout is as follows: Figure 4 shown.
[0101] Figure 4 A cable suspension method is shown, namely separate suspension, in which the distance between communication cables, power cables and optical fibers is 1 cm.
[0102] The Z axis can be adjusted upwards by 2mm at a time, from 0 to 12mm; the X axis can be adjusted rightward by 2mm at a time, from 0 to 12mm; the Y axis can be adjusted toward the wall by 2mm at a time, from 0 to 12mm.
[0103] Step 11: Data Processing and Analysis. Fit the upper and lower sensor test data for each operating condition and express it using the formula y = kΔ + b. Comparing the fit results for the upper and lower sensors with the repeatability of each data set demonstrates the validity of the test data and method.
[0104] In this test, the stiffness of the optical fiber is 0.03~0.0329N / mm, the stiffness of the power cable is 0.0718~0.0729N / mm, and the stiffness of the signal cable is 0.03~0.0318N / mm. The stiffness of the bundled cables is 0.0729~0.0904N / mm.
[0105] According to the present invention, a dual-super-platform inter-cabin cable interference ground measurement system is provided, comprising:
[0106] Module M1: Establishing a constrained connection structure at both ends of a test cable group, wherein the cable group includes multiple types of functional cables;
[0107] Module M2: Constructs an orthogonal three-dimensional measurement coordinate system, sets sensors at both ends of the cable group, and collects the cable tension value at the preset position in real time by changing the posture of the two ends of the cable group;
[0108] Module M3: Performs a forward coordinated displacement test, causing the cable end to move in a coordinated manner along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, obtains forward data, and returns to the initial position;
[0109] Module M4: Performs a negative coordinated displacement test, causing the cable end to be displaced in the negative direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis in a coordinated manner according to preset step sizes, obtains negative data, and returns to the initial position;
[0110] Module M5: Group the cables of the same type and re-execute the forward coordinated displacement test, so that the cable ends are coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to the preset step length, obtain group data, and restore to the initial position;
[0111] Module M6: Analyze and fit the positive data, negative data and grouped data as mechanical data, build a displacement-tension response model, verify the effectiveness of the test system through sensor data consistency, and output test results.
[0112] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0113] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.
Claims
1. A ground measurement method for cable interference between cabins of a dual super platform, characterized in that: include: Step S1: establishing a constrained connection structure at both ends of a test cable group, wherein the cable group includes multiple types of functional cables; Step S2: constructing an orthogonal three-dimensional measurement coordinate system, setting sensors at both ends of the cable group, and collecting the tension value of the cable at the preset position in real time by changing the posture of the two ends of the cable group; Step S3: Perform a forward coordinated displacement test to coordinately displace the cable end along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, obtain forward data, and restore to the initial position; Step S4: Perform a negative coordinated displacement test, causing the cable end to be coordinated and displaced along the negative direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, obtain negative data, and restore to the initial position; Step S5: Group the cables of the same type and re-execute the forward coordinated displacement test, so that the cable ends are coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to the preset step length, obtain grouped data, and restore to the initial position; Step S6: Analyze and fit the positive data, negative data, and grouped data as mechanical data, construct a displacement-tension response model, verify the effectiveness of the test system through the consistency of sensor data, and output the test results.
2. The method for measuring cable interference between cabins of dual super platforms according to claim 1, characterized in that: The multiple types of functional cables include: optical fibers, power cables and communication cables; There are 2 optical fibers, 11 power cables, and 11 communication cables. In the step S2, the orthogonal three-dimensional measurement coordinate system is formed, wherein the X-axis corresponds to the horizontal direction, the Y-axis corresponds to the normal direction perpendicular to the installation surface, and the Z-axis corresponds to the vertical direction.
3. The method for measuring cable interference between cabins of dual super platforms according to claim 2, characterized in that: In step S2, one end of the two ends of the cable group is connected to the lower platform of the mobile platform, and the other end is connected to the upper platform of the mobile platform; the lower platform of the mobile platform can move relative to each other along the X axis, Y axis and Z axis of the orthogonal three-dimensional measurement coordinate system; by moving the lower platform, the position of the two ends of the cable group is changed; the position of the upper platform of the mobile platform is fixed; In step S3, the displacement is coordinated according to a preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm; In step S4, the displacement is coordinated according to a preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm; The displacement value of the initial state is 0.
4. The method for measuring cable interference between cabins of dual super platforms according to claim 3, characterized in that: In the step S5, it includes: Step S5.1: Performing the forward coordinated displacement test on all optical fibers individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, to obtain optical fiber data as grouped data; Step S5.2: Performing the forward coordinated displacement test on all communication cables individually, causing the cable ends to be cooperatively displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to a preset step size, to obtain communication cable data as grouped data; Step S5.3: Perform the forward coordinated displacement test on all power cables individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to a preset step size, to obtain power cable data as grouped data; Step S5.4: Bundle all optical fibers, power cables, and communication cables into bundles with a spacing of 1 cm, and perform the forward collaborative displacement test to make the cable ends collaboratively displace one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to the preset step size to obtain comparison data as grouped data.
5. The method for measuring cable interference between cabins of dual super platforms according to claim 4, characterized in that: In S6, the positive data, negative data and grouped data as mechanical data are analyzed and fitted to construct a displacement-tension response model, and the mathematical expression is: F=-kΔx Where F represents the cable tension, k represents the cable tension coefficient, and Δx represents the cable displacement. In step S6, the validity of the test system is verified by the consistency of the sensor data, that is, the positive data, the negative data and the k value calculated by the two sets of data are compared to determine whether the two sets of data and the obtained k value are consistent in size and opposite in direction; if the result is yes, the validity is satisfied; if the result is no, the validity is not satisfied, the measurement experiment is terminated, and the problem is checked.
6. A ground measurement system for cable interference between cabins of dual super platforms, characterized in that: include: Module M1: Establishing a constrained connection structure at both ends of a test cable group, wherein the cable group includes multiple types of functional cables; Module M2: Constructs an orthogonal three-dimensional measurement coordinate system, sets sensors at both ends of the cable group, and collects the cable tension value at the preset position in real time by changing the posture of the two ends of the cable group; Module M3: Performs a forward coordinated displacement test, causing the cable end to move in a coordinated manner along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, obtains forward data, and returns to the initial position; Module M4: Performs a negative coordinated displacement test, causing the cable end to be displaced in the negative direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis in a coordinated manner according to preset step sizes, obtains negative data, and returns to the initial position; Module M5: Group the cables of the same type and re-execute the forward coordinated displacement test, so that the cable ends are coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to the preset step length, obtain group data, and restore to the initial position; Module M6: Analyze and fit the positive data, negative data and grouped data as mechanical data, build a displacement-tension response model, verify the effectiveness of the test system through sensor data consistency, and output test results.
7. The dual super platform inter-cabin cable interference ground measurement system according to claim 6, characterized in that: The multiple types of functional cables include: optical fibers, power cables and communication cables; There are 2 optical fibers, 11 power cables, and 11 communication cables. In the module M2, the orthogonal three-dimensional measurement coordinate system, wherein the X-axis corresponds to the horizontal direction, the Y-axis corresponds to the normal direction perpendicular to the installation surface, and the Z-axis corresponds to the vertical height direction.
8. The dual super platform inter-cabin cable interference ground measurement system according to claim 7, characterized in that: In the module M2, one end of the cable group is connected to the lower platform of the mobile platform, and the other end is connected to the upper platform of the mobile platform; the lower platform of the mobile platform can move relative to each other along the X-axis, Y-axis and Z-axis of the orthogonal three-dimensional measurement coordinate system; the position of the two ends of the cable group can be changed by moving the lower platform; the position of the upper platform of the mobile platform is fixed; In the module M3, the displacement is coordinated according to the preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm; In the module M4, the displacement is coordinated according to the preset step length, and the displacement amount increases from the initial state to 12 mm; the preset step length is 2 mm, that is, each displacement is 2 mm; The displacement value of the initial state is 0.
9. The dual super platform inter-cabin cable interference ground measurement system according to claim 8, characterized in that: The module M5 includes: Module M5.1: Perform the forward coordinated displacement test on all optical fibers individually, causing the cable ends to be coordinated and displaced one by one along the positive Z-axis, the positive X-axis, and the positive Y-axis according to preset step sizes, to obtain optical fiber data as grouped data; Module M5.2: Perform the forward coordinated displacement test on all communication cables individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, to obtain communication cable data as grouped data; Module M5.3: Perform the forward coordinated displacement test on all power cables individually, causing the cable ends to be coordinated and displaced one by one along the positive direction of the Z axis, the positive direction of the X axis, and the positive direction of the Y axis according to preset step sizes, to obtain power cable data as grouped data; Module M5.4: Bundle all optical fibers, power cables, and communication cables in separate bundles, spaced 1 cm apart. Perform the forward coordinated displacement test, displacing the cable ends in the positive Z-axis, X-axis, and Y-axis directions, one by one, in a coordinated manner according to preset step sizes. Comparison data is obtained as grouped data.
10. The dual super platform inter-cabin cable interference ground measurement system according to claim 9, characterized in that: In the module M6, the positive data, negative data and grouped data as mechanical data are analyzed and fitted to construct a displacement-tension response model, the mathematical expression of which is: F=-kΔx Where F represents the cable tension, k represents the cable tension coefficient, and Δx represents the cable displacement. In the module M6, the validity of the test system is verified by the consistency of sensor data, that is, the positive data, the negative data and the k value calculated by the two sets of data are compared to determine whether the two sets of data and the obtained k value are consistent in size and opposite in direction; if the result is yes, the validity is satisfied; if the result is no, the validity is not satisfied, the measurement experiment is terminated, and the problem is checked.
Citation Information
Patent Citations
Test method for stiffness of inter-cabin cables in separable spacecraft
CN110095241B
Novel Method and System for Measuring the Stiffness of Flexible Cables
CN111504582B
On-orbit measurement method and system for rigidity of cable between double-super satellite cabins
CN113324714A
Detection device and detection method for accurately and quantitatively measuring bending rigidity of cable and application
CN117848867A
Automatic loading and measuring device for cable bending rigidity test
CN118730756A
