A high speed current carrying friction in-situ testing system

Abstract

The application discloses a high-speed current-carrying friction in-situ test system and relates to the technical field of precision instruments, which comprises a macro-micro power loading module, a constant force loading module, a current loading module, a force monitoring module and an in-situ detection module. The macro-micro power loading module controls the relative motion of the friction pair to be tested. The current loading module is used for loading current between friction amplitudes. The in-situ monitoring module comprises three in-situ monitoring means, namely acoustic emission, infrared thermal imaging and a high-speed camera. The application can support the test of high-speed current-carrying friction conditions such as multi-angle and multi-posture macro-micro-motion-static coupling, and can simultaneously acquire time sequence information of temperature fields, optics, acoustics and vibration, and further acquire time sequence information of thermal energy, arc intensity, adhesive wear degree, fatigue wear degree and deformation energy of the friction pair, which helps to deeply understand the failure mechanism and modification mechanism of high-speed multi-condition current-carrying friction amplitude and accelerates the optimization work of the current-carrying friction performance of the current-carrying friction pair.

Description

Technical Field

[0001] This invention relates to the field of precision instrument technology, and in particular to a high-speed current-carrying friction in-situ testing system and its testing method. The instrument involved in this invention can be applied to rail transportation and electromagnetic launch, among other fields. Background Technology

[0002] Friction and wear are a major cause of significant economic losses in the machinery industry. Researching the mechanisms and modifications of friction and wear is essential to reducing these losses. However, tribology is an interdisciplinary field encompassing mechanics, materials science, chemistry, and other disciplines, characterized by multi-factor coupling and complexity. Current-carrying friction introduces electrical factors into mechanical friction pairs, further increasing the difficulty of research. Traditional single-condition current-carrying friction testing instruments are insufficient to support the research and application testing needs of this field.

[0003] Traditional current-carrying friction testing instruments primarily acquire basic time-series information such as current, voltage, normal force of the friction pair, and frictional force. Furthermore, most existing instruments operate under limited conditions. In-situ testing of current-carrying friction refers to the dynamic monitoring of the frictional state of the current-carrying friction pair during material service, in addition to acquiring basic time-series information such as load and current signals, using technologies like high-speed cameras, acoustic emission probes, and infrared thermal imaging. High-speed cameras can acquire multiple optical images in a short time, acoustic emission probes can monitor the strain energy released when materials and components deform or crack under stress, and infrared thermal imaging can acquire temperature field contour maps. Integrating in-situ monitoring methods such as acoustic emission, infrared thermal imaging, and high-speed cameras into the instrument allows for the simultaneous acquisition of time-series information on temperature field, optics, acoustics, and vibration. This enables the acquisition of time-series information on friction pair thermal energy, arc intensity, adhesive wear, fatigue wear, and friction pair deformation energy. Traditional current-carrying friction testing instruments, which can only acquire basic time-series information, can only support the study of the overall current-carrying friction performance of the friction amplitude and are insufficient for decoupling analysis of multi-factor coupled current-carrying friction. Furthermore, actual current-carrying friction conditions are not limited to static load conditions. For example, in the rail transit field, static-dynamic coupled load conditions can occur between the pantograph and the high-voltage line due to changes in their relative positions. Current-carrying friction testing instruments with multi-angle, multi-attitude dynamic-static-macro-micro coupling can meet the testing needs of most conditions and the decoupling research requirements of current-carrying friction.

[0004] Finally, data-driven machine learning technology possesses strong fitting capabilities. Combined with multi-angle, static, and dynamic current-carrying friction displacement loading methods and in-situ monitoring methods with multi-time-series information, a quantitative relationship can be established between various monitoring variables obtained in the early stages of the experiment and current-carrying friction performance such as service life and wear. This allows for the construction of a predictive model for current-carrying friction performance, accelerating the optimization of the friction amplitude's current-carrying friction performance. Simultaneously, the monitoring variables of friction amplitudes with good current-carrying friction performance and friction pairs with poor current-carrying friction performance, based on this predictive model, can be compared to explore the modification mechanism of the current-carrying friction amplitude. Summary of the Invention

[0005] The purpose of this invention is to provide a high-speed in-situ testing system and method for current-carrying friction, in order to solve the problem of limited testing conditions and the contradiction between the limited information collected and the complex failure process of current-carrying friction amplitude in traditional current-carrying friction testing systems. By combining an industrial robot with piezoelectric drive, it realizes multi-angle, multi-posture macro-micro-static-dynamic coupling multi-scenario testing. At the same time, the system integrates a variety of in-situ characterization devices, which can acquire a variety of time-series information. Furthermore, by combining machine learning, it can quantitatively establish the correlation between the observed time-series information and the current-carrying friction performance, thereby accelerating the optimization of the current-carrying friction amplitude and the research on the modification mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides a high-speed current-carrying friction in-situ testing system for high-speed current-carrying friction performance testing. It includes a macro-micro dynamic loading module, a constant force loading module, a current loading module, a force monitoring module, an in-situ detection module, and a test sample. The macro-micro dynamic loading module controls the relative motion of the friction pair under test, the constant force loading module controls the load between the friction amplitudes, the current loading module is used to measure the current loading between the friction amplitudes, and the force monitoring module is used to obtain the interaction force between the friction pairs.

[0008] Preferably, the macro-micro dynamic loading module includes a three-stage acceleration mechanism, a macro-power module, and a micro-power module. The three-stage acceleration mechanism comprises a first acceleration mechanism, a second acceleration mechanism, and a third acceleration mechanism. The first acceleration mechanism is a belt-driven acceleration mechanism, the second acceleration mechanism is a five-stage gear acceleration mechanism located above the first acceleration mechanism, and the third acceleration mechanism is a large-size disc acceleration mechanism located above the second acceleration mechanism. The in-situ monitoring module includes an acoustic emission monitoring unit, a relative image monitoring unit, and an absolute image monitoring unit. The test samples include giant disc-shaped samples and pin-shaped samples.

[0009] Preferably, the macroscopic dynamic loading module includes a dynamic loading mechanism and a support plate. The dynamic loading mechanism is an industrial robot, and the end of the robot is rigidly connected to the support plate to control the six-degree-of-freedom movement of the pin-shaped sample.

[0010] Preferably, the micro-dynamic module includes four piezoelectric stacks and one flexible hinge. The piezoelectric stacks are diagonally distributed in the flexible hinge to control the minute movements of the pin-shaped sample under test in three degrees of freedom: rotation along the X-axis, rotation along the Y-axis, and movement along the Z-axis.

[0011] Preferably, the constant force loading module includes a constant pressure module, a pressure output device, and a guide mechanism. The pressure output device is located above the guide mechanism and drives the guide mechanism and the pin-shaped specimen to move downward along the axial direction of the pin-shaped specimen.

[0012] Preferably, the in-situ monitoring module includes an acoustic emission monitoring unit, a relative image monitoring unit, and an absolute image monitoring unit. The acoustic emission monitoring unit is located above the pin-shaped sample. The relative image monitoring unit maintains a constant relative position with the pin-shaped sample and includes a relative infrared thermal imaging monitoring unit and a relative high-speed camera monitoring unit. The relative infrared thermal imaging monitoring unit and the relative high-speed camera monitoring unit are distributed on both sides of the pin-shaped sample.

[0013] Preferably, the absolute image monitoring unit maintains its absolute position unchanged, and the relative image monitoring unit includes an absolute thermal imaging monitoring unit and an absolute high-speed camera monitoring unit, with the absolute infrared thermal imaging unit and the absolute high-speed camera unit located on both sides of the pin-shaped sample, respectively.

[0014] Preferably, the pin-shaped sample includes a conical friction head, a conical-planar coupled friction head, a planar friction head, and a multi-antenna friction head. The multi-antenna friction head, used in conjunction with the antenna cap, supports efficient magnetron sputtering for preparing the antenna surface coating. Using the multi-antenna friction head in experiments can accelerate the acquisition of current-carrying tribological test data, providing experimental methodological support for the material genome research of tribological coatings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the high-speed current-carrying friction in-situ testing system of the present invention;

[0017] Figure 2 This is a schematic diagram of the three-stage acceleration mechanism of the present invention;

[0018] Figure 3 This is a simplified mechanical principle diagram of the five-stage acceleration gearbox of the present invention;

[0019] Figure 4 This is a schematic diagram of the macro-micro-dynamic-static loading module structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the three-degree-of-freedom flexible hinge structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the constant force loading module structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the pneumatic circuit of the constant pressure module of the present invention;

[0023] Figure 8 This is a schematic diagram of the in-situ monitoring module structure of the present invention;

[0024] Figure 9 Schematic diagrams of various pin-shaped and multi-antennae-shaped specimens of the present invention;

[0025] The components include: 1. Support base; 2. Motor; 3. Large pulley; 4. Transmission belt; 5. Small pulley; 6. Five-stage acceleration gearbox; 7. Flange; 8. Insulating flange; 9. Insulating brush holder; 10. Brush; 11. Giant disc-shaped specimen; 12. Pin-shaped specimen; 13. Concave clamp; 14. Convex clamp; 15. Insulating plate; 16. Plate-shaped adapter; 17. Acoustic emission probe holder; 18. Acoustic emission probe; 19. Triaxial force sensor; 20. Flexible hinge; 21. Piezoelectric stack; 22. 23. Clamping screw; 24. Rod-shaped adapter; 25. Bearing support plate; 26. Linear bearing; 27. Rubber buffer pad; 28. Pneumatic cylinder; 29. ​​Spring; 30. Linear bearing rod; 31. Adapter rib; 32. Linear bearing rod retaining plate; 33. Base plate; 34. Industrial robot; 35. Infrared thermal imaging lens; 36. High-speed camera lens; 37. Clamping handle; 38. Lens Z-axis rotation adjustment bracket; 39. Column; 40. In-situ component mounting bracket; 41. Lens adapter bracket; 42. Tripod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The purpose of this invention is to provide a high-speed in-situ testing system and method for current-carrying friction, in order to solve the problem of limited testing conditions and the contradiction between the limited information collected and the complex failure process of current-carrying friction amplitude in traditional current-carrying friction testing systems. By combining an industrial robot with piezoelectric drive, it realizes multi-angle, multi-posture macro-micro-static-dynamic coupling multi-scenario testing. At the same time, the system integrates a variety of in-situ characterization devices, which can acquire a variety of time-series information. Furthermore, by combining machine learning, it can quantitatively establish the correlation between the observed time-series information and the current-carrying friction performance, thereby accelerating the optimization of the current-carrying friction amplitude and the research on the modification mechanism.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] This invention provides a high-speed in-situ testing system for current-carrying friction, comprising a macro-micro dynamic loading module, a constant force loading module, a current loading module, a force monitoring module, an in-situ detection module, and a test sample. Figure 1 As shown, the macro-micro power loading module includes a support base 1, a motor 2, a large pulley 3, a transmission belt 4, a small pulley 5, an acceleration gearbox 6, a flange 7, a flexible hinge 20, a piezoelectric stack 21, a clamping screw 22, a base plate 32, and an industrial robot 33, used to control the relative movement of the friction pair under test; the constant force loading module includes a rod-shaped adapter 23, a bearing support plate 24, a linear bearing 25, a rubber buffer pad 26, a pneumatic cylinder 27, a spring 28, an adapter rib 30, and a linear bearing rod retaining plate 31, used to control the normal load between the friction amplitudes; the current loading module includes an insulating flange 8, an insulating brush holder 9, and an electric... The brush 10 and insulating plate 15 are used to apply current between the friction pairs while ensuring insulation from other locations. Voltage is applied to the brush 10 and the convex clamp 14. The force monitoring module includes a triaxial force sensor 19 for acquiring the force between the friction pairs. The in-situ monitoring module includes an infrared thermal imaging lens 34, a high-speed camera lens 35, a lens clamping handle 36, a lens z-axis rotation adjustment bracket 37, a column 38, an in-situ component mounting bracket 39, a lens adapter bracket 40, and a tripod 41 for dynamically monitoring the state of the current-carrying friction pairs and acquiring timing information. The test samples include a giant disc-shaped sample 11 and a pin-shaped sample 12.

[0030] The macro-micro dynamic loading module comprises a three-stage acceleration mechanism, a macro-power module, and a micro-power module. The three-stage acceleration mechanism includes a first acceleration mechanism, a second acceleration mechanism, and a third acceleration mechanism. For example... Figure 2As shown, the first acceleration mechanism includes a motor 2, a pulley 3, a transmission belt 4, and a small pulley 5; the second acceleration mechanism is a five-stage acceleration gearbox 6, located above the first acceleration mechanism; the third acceleration mechanism is a giant disc-shaped sample 11, which amplifies the linear velocity using large-sized components, and is located above the second acceleration mechanism. The motor 2 and the five-stage acceleration gearbox 6 are fixed to the support base 1 by screws. The power of the motor 2 is transmitted to the five-stage acceleration gearbox 6 via the transmission belt 4, and the five-stage acceleration gearbox 6 transmits power to the giant disc-shaped sample 11 via flanges 7 and insulating flanges 8. A simplified mechanical diagram of the five-stage acceleration gearbox 6 is shown below. Figure 3 As shown.

[0031] like Figure 4 As shown, the macroscopic dynamic loading module includes an industrial robot 33 and a substrate 32. The industrial robot 33 acts as the dynamic loading module, and its end is rigidly connected to the substrate 32 by screws to control the movement of the six degrees of freedom of the pin-shaped sample 12 to be tested.

[0032] like Figure 4 As shown, the micro-dynamic module includes one flexible hinge 20, four piezoelectric stacks 21, and four clamping screws 22. The piezoelectric stacks 21 are diagonally distributed in the flexible hinge 20. A schematic diagram of the flexible hinge 20 is shown below. Figure 5 As shown, clamping screw 22 is used to control the tight fit between piezoelectric stack 21 and flexible hinge 20. The entire micro-dynamic module is used to control the minute movements of the test pin sample in three degrees of freedom: rotation along the X-axis, rotation along the Y-axis, and movement along the Z-axis.

[0033] like Figure 6 As shown, the constant force loading module includes a constant pressure module, a guiding mechanism, and a load output device. The guiding mechanism includes a rod-shaped adapter 23, a bearing support plate 24, a linear bearing 25, a rubber buffer pad 26, a spring 28, an adapter rib 30, and a linear bearing rod retaining plate 31, used to constrain the floating parts (including the rod-shaped adapter 23, bearing support plate 24, linear bearing 25, etc.), retaining only the Z-axis degree of freedom. The load output device is a pneumatic cylinder 27, used to drive the guiding mechanism and the pin-shaped specimen 12 to move downwards along the axial direction of the pin-shaped specimen 12. The pneumatic circuit diagram of the constant pressure module that provides pneumatic pressure to the pneumatic cylinder 27 is shown below. Figure 7 As shown, the air compressor is the pressure source of the circuit, the pressure reducing valve controls the outlet pressure to remain constant, the throttle valve is used to slow down the extension and retraction speed of the air cylinder 27 when the air pressure is suddenly loaded in the air pressure circuit to avoid the impact of sudden air supply on the pin-shaped sample 12 and the giant disc-shaped sample 11, and the overflow valve is used to control the maximum loading pressure in the air cylinder 27.

[0034] The in-situ monitoring module includes an acoustic emission monitoring unit, a relative image monitoring unit, and an absolute image monitoring unit. For example... Figure 8As shown, the acoustic emission monitoring unit includes an acoustic emission probe holder 17 and an acoustic emission probe 18, used to acquire acoustic and vibration information of the test system and thus dynamically monitor the current-carrying friction amplitude state; the relative image monitoring unit includes an infrared thermal imaging lens 34, a high-speed camera lens 35, six clamping handles 36, two lens z-axis rotation adjustment frames 37, two columns 38, and one in-situ component mounting frame 39. The in-situ component mounting frame 39 is fixed to the base plate 32 by screws, the columns 38 are fixed to the in-situ component mounting frame 39 by screws, the lens z-axis rotation adjustment frame 37 is connected to the columns 38 by clamping handles 36, and the infrared thermal imaging lens 34 and the high-speed camera lens 35 are mounted on the lens z-axis rotation adjustment frame 37 by clamping handles 36. The relative image monitoring unit is connected to the test pin-shaped sample 1. 2. Maintaining an unchanged relative position, the focus is on observing the pin-shaped sample 12. Infrared thermal imaging lens 34 and high-speed camera lens 35 are distributed on both sides of the pin sample to be tested, used to acquire image information of the current-carrying friction amplitude and temperature field information to monitor the arc damage of the current-carrying friction amplitude; The absolute image monitoring unit includes one infrared thermal imaging lens 34, one high-speed camera lens 35, two lens adapters 40, two tripods 41 and four clamping handles 36. The infrared thermal imaging lens 34 and high-speed camera lens 35 are connected to the lens adapter 40 through the clamping handles 36. The lens adapter 40 is connected to the tripod 41 by screws. The absolute image monitoring unit maintains its absolute position and can be arbitrarily placed according to needs, focusing on observing the giant disc-shaped sample 11, used to acquire image information and temperature field information in real time.

[0035] like Figure 9 As shown, the friction head of the pin-shaped sample 12 can be divided into conical grinding heads, conical-planar coupled grinding heads, planar grinding heads, and multi-angled grinding heads. Conical grinding heads, conical-planar coupled grinding heads, and planar grinding heads can support the influence of the friction head shape on the current-carrying friction performance. Multi-angled friction heads can support multiple samples in one test, accelerating the acquisition of test results. At the same time, when magnetron sputtering thin films on multi-angled friction heads, a cap can be used to block a small angle of the multi-angled friction head to control whether it is sputtered.

[0036] The present invention also provides a specific embodiment of a high-speed current-carrying friction in-situ testing system:

[0037] The overall dimensions of the system are 1430mm×810mm×703mm, the dimensions of the giant disc-shaped specimen 11 are Ф750mm×20mm, and the dimensions of the pin-shaped specimen 12 are Ф6mm×20mm.

[0038] The component models involved in this embodiment are as follows:

[0039] The model number for motor 2 can be referenced as WEGW21-ExnA;

[0040] The acoustic emission probe 18 can be referenced as the Fujicera HS-10A-11M2 model;

[0041] The triaxial force sensor 19 can be referenced as model HUILIZHILZ-SWF40, with X / Y axis ranges of 50 to 300 N and Z axis ranges of 100 to 1000 N.

[0042] The piezoelectric stack 21 can be referenced as model COREMORROWMtp150 / 10×10 / 18, with dimensions of 10×10×18mm, a displacement-free output thrust of 3600N, and a stiffness of 180N / μm;

[0043] The linear bearing 25 can be referenced as model LMK16;

[0044] The pneumatic cylinder 27 can be referenced as model AIRTECRT-2200;

[0045] The industrial robot arm 33 can be referenced by model MH165;

[0046] The infrared thermal imaging lens 34 can be referenced as the ForTric628C model;

[0047] For high-speed camera lenses, the NPX-GS130UM model is a good reference, with a speed of 6000 frames per second.

[0048] The principle and application of multi-angle, multi-orientation macro-micro-dynamic-static coupling multi-mode current-carrying friction testing and in-situ monitoring that can be achieved in this embodiment are as follows:

[0049] This embodiment can perform macro-static-micro-static coupled high-speed current-carrying friction tests, macro-dynamic-micro-static coupled high-speed current-carrying friction tests, macro-dynamic-micro-dynamic coupled high-speed current-carrying friction tests, and macro-dynamic-micro-dynamic coupled high-speed current-carrying friction tests. The industrial robot 33 is used to control the macroscopic relative position and relative movement between the current-carrying friction pairs. It can remain stationary during the test (macro-static) or move in real time during the test (macro-dynamic). The piezoelectric stack 21 controls the minute relative movement between the current-carrying pairs. It can remain stationary during the test (micro-static) or move in real time during the test (micro-dynamic). The micro-dynamic movement can be used to add additional relative movement to the current-carrying friction pairs or to counteract unexpected relative movement of the current-carrying friction amplitude, such as counteracting the minute relative movement of the current-carrying friction amplitude caused by mechanical vibration of the test system. Multi-angle, multi-orientation, macro-micro-dynamic-static coupled multi-mode testing can support simulation tests under various working conditions, such as current-carrying friction tests between pantographs and conductors with different structures and current-carrying friction tests between electromagnetic guns and conductive rails under different working conditions. At the same time, it can also provide instrument support for static-dynamic coupled current-carrying friction research and decoupling research.

[0050] In addition to supporting multiple testing modes, the system can also monitor the current-carrying friction state of the friction amplitude in real time through the acoustic emission probe 18, infrared thermal imaging lens 34, and high-speed camera lens 35 to obtain temporal information on temperature field, optics, acoustics, and vibration. This allows for the acquisition of temporal information on the friction pair temperature field, arc intensity, adhesive wear degree, fatigue wear degree, and friction pair deformation energy, contributing to a deeper understanding of the failure mechanism and modification mechanism of high-speed, multi-condition current-carrying friction amplitudes. One set of infrared thermal imaging lens 34 and high-speed camera lens 35 focuses on in-situ observation of the pin sample, maintaining a constant relative position with the pin-shaped sample 12 during testing. The other set of infrared thermal imaging lens 34 and high-speed camera lens 35 focuses on in-situ observation of the giant disk-shaped sample 11, maintaining its constant absolute position during testing.

[0051] Furthermore, this macro-micro-dynamic-static coupled in-situ monitoring method for current-carrying friction testing and multi-time-series information can be combined with machine learning to further expand its applications. It can establish a quantitative relationship between various monitoring variables obtained in the early stages of the experiment and current-carrying friction properties such as service life and wear, constructing a predictive model for current-carrying friction performance and accelerating the optimization of friction amplitude and current-carrying friction performance. Simultaneously, the monitoring variables of friction amplitudes with good current-carrying friction performance and friction pairs with poor current-carrying friction performance based on this predictive model can be compared to explore the modification mechanism of current-carrying friction amplitude.

[0052] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A high-speed current-carrying friction in-situ test system, characterized by: a test for high-speed current-carrying friction performance, comprising a macro-micro power loading module, a constant force loading module, a current loading module, a force monitoring module, an in-situ monitoring module, and a sample to be tested; the macro-micro power loading module controls the relative motion between the friction pairs to be tested; the constant force loading module controls the normal load between the friction pairs; the current loading module is used to load current between the friction pairs; and the force monitoring module is used to obtain the force between the friction pairs. The macro-micro power loading module comprises a three-stage acceleration mechanism, a macro power mechanism, and a micro power mechanism; the three-stage acceleration mechanism comprises a first acceleration mechanism, a second acceleration mechanism, and a third acceleration mechanism; the first acceleration mechanism is a belt drive acceleration, the second acceleration mechanism is a five-stage gear acceleration located above the first acceleration mechanism, and the third acceleration mechanism is a large-size disc acceleration located above the second acceleration mechanism; the in-situ monitoring module comprises an acoustic emission monitoring unit, a relative image monitoring unit, and an absolute image monitoring unit; the sample to be tested comprises a giant disc-shaped sample and a pin-shaped sample; the acoustic emission monitoring unit is located above the pin-shaped sample; the relative image monitoring unit maintains a constant relative position with the pin-shaped sample and comprises a relative infrared thermal imaging monitoring unit and a relative high-speed camera monitoring unit; the relative infrared thermal imaging monitoring unit and the relative high-speed camera monitoring unit are distributed on both sides of the pin-shaped sample to be tested; the absolute image monitoring unit maintains its absolute position unchanged, and the absolute image monitoring unit comprises an absolute thermal imaging monitoring unit and an absolute high-speed camera monitoring unit; the absolute thermal imaging monitoring unit and the absolute high-speed camera unit are respectively located on both sides of the pin-shaped sample to be tested; The macro power mechanism comprises a power loading mechanism and a support plate, and the power loading mechanism is an industrial robot hand; the end of the robot hand is rigidly connected to the support plate to control the six-degree-of-freedom movement of the pin-shaped sample; The micro power mechanism comprises four piezoelectric stacks and one flexible hinge; the piezoelectric stacks are diagonally distributed in the flexible hinge to control the X-axis rotation, Y-axis rotation, and Z-axis movement of the pin-shaped sample.

2. The high speed current carrying frictional in-situ test system of claim 1, wherein: The constant force loading module comprises a constant pressure module, a pressure output device, and a guide mechanism; the pressure output device is located above the guide mechanism to drive the guide mechanism and the pin-shaped sample to move downward along the axial direction of the pin-shaped sample.

3. The high speed current carrying frictional in-situ test system of claim 1, wherein: The pin-shaped sample comprises a conical friction head, a conical-plane coupled friction head, a plane-shaped friction head, and a multi-antenna friction head; The multi-antenna friction head is used in combination with an antenna cap to support the magnetron sputtering of a high-efficiency antenna surface coating; the use of the multi-antenna friction head can accelerate the acquisition of current-carrying friction test data and provide experimental method support for the material genome research of the friction coating.

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