Excitation device and stress screening control system based on fault stress of electrical prototype

Abstract

The present invention belongs to the field of stress screening and involves data analysis technology. It is used to solve the problem that the stress conductivity of traditional fault stress excitation devices is difficult to meet product testing requirements. Specifically, it is an excitation device based on electrical prototype fault stress and a stress screening control system, including a stress excitation platform and a shunt mechanism. Several excitation sources and driving components are arranged on the side of the stress excitation platform. The shunt mechanism includes a first filter. A small-diameter branch component is arranged at the rear end of the first filter. A switch valve is arranged between the filter and the small-diameter branch component. A second filter is arranged at the rear end of the small-diameter branch component. The present invention has strong mechanical properties, and the connection of the three-layer structure can meet the structural strength. Its high-strength toughness, driven by multiple-point stress excitation sources, buffers the release of stress excitation to a certain extent, and the relative axial torsion of the platform can be improved.

Description

Technical Field

[0001] The invention belongs to the field of stress screening and relates to data analysis technology, in particular to an excitation device based on fault stress of an electrical prototype and a stress screening control system. Background Art

[0002] In the early stages of electronic product design, fault stimulation of demo (prototype) through stress provided by stress stimulation device can effectively identify product defects, so as to quickly correct defects that were not discovered in the design stage. Multiple verifications by stress stimulation device can effectively improve product reliability and accelerate product time to market.

[0003] The efficient application of the fault stress excitation and screening platform system requires that the stress platform itself has a stable structure, a relatively flexible texture, and its torsion amplitude and frequency must reach certain values ​​under high-speed camera observation. Its stress conductivity must meet the testing requirements of the product. In addition, the platform design can cover applications in more complex situations, such as the platform's interchangeability, the correlation of multiple excitation sources, and the shunt control method, which have always been technical difficulties that need to be rebuilt in this field. Summary of the invention

[0004] The purpose of the present invention is to provide an excitation device based on fault stress of an electrical prototype and a stress screening control system, so as to solve the problem that the stress conductivity of a traditional fault stress excitation device is difficult to meet the product testing requirements;

[0005] The technical problem to be solved by the present invention is: how to provide an excitation device based on electrical prototype fault stress and a stress screening control system whose stress conductivity can meet product testing requirements.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An excitation device based on fault stress of an electrical prototype includes a stress excitation platform and a diversion mechanism, wherein a plurality of excitation sources and drive components are arranged on the side of the stress excitation platform, and the diversion mechanism includes a first filter, a small-diameter branch component is arranged at the rear end of the first filter, a switch valve is arranged between the filter and the small-diameter branch component, a second filter is arranged at the rear end of the small-diameter branch component, a mechanical regulating valve is arranged between the small-diameter branch component and the second filter, a flow regulating valve and a switch solenoid valve are arranged between the small-diameter branch component and the mechanical regulating valve, a large-diameter branch component is connected to the bottom of the second filter through a pipeline, a pulse solenoid valve is arranged between the large-diameter branch component and each drive component, and a muffler is arranged at the bottom of the large-diameter branch component.

[0008] Furthermore, the stress excitation platform includes an upper plate, a middle plate and a bottom plate, a triangular reinforcement rib is arranged at the center of the upper plate, and the reinforcement rib is provided with evenly distributed titanium alloy threaded holes and locking holes; the middle plate is provided with evenly distributed connection holes corresponding to the standard parts; the lower plate includes a module assembly layer, the module assembly layer is provided with evenly distributed positioning holes, and the module assembly layer is composed of X-type standard parts, standard parts A and standard parts B.

[0009] A stress screening control system based on electrical prototype fault stress includes a processor, wherein the processor is communicatively connected with an excitation monitoring module, a test analysis module and a storage module;

[0010] The excitation monitoring module is used to monitor and analyze the output stress of the excitation source of the excitation device, and when the output stress of the excitation source of the excitation device meets the requirements, a test analysis signal is generated and sent to the test analysis module;

[0011] The test analysis module is used to analyze the stress test process of the excitation device and mark the products whose stress test results do not meet the requirements as screening objects, and send the screening objects to the mobile phone terminal of the administrator.

[0012] Furthermore, the specific process of the excitation monitoring module monitoring and analyzing the output stress of the excitation source of the excitation device includes: when the same group of power prototypes are subjected to fault stress testing, the torque value of the output stress of each excitation source is obtained, an excitation set is formed by the torque values ​​of the output stress of all excitation sources, the variance of all elements of the excitation set is calculated to obtain the excitation uniformity coefficient, the excitation uniformity threshold is obtained through the storage module, the excitation uniformity coefficient is compared with the excitation uniformity threshold, and whether the output stress of the excitation source of the excitation device meets the requirements is determined through the comparison result.

[0013] Furthermore, the specific process of comparing the excitation uniformity coefficient with the excitation uniformity threshold includes: if the excitation uniformity coefficient is less than the excitation uniformity threshold, it is determined that the output stress of the excitation source of the excitation device meets the requirements; if the excitation uniformity coefficient is greater than or equal to the excitation uniformity threshold, it is determined that the output stress of the excitation source of the excitation device does not meet the requirements, an output adjustment signal is generated and the output adjustment signal is sent to the mobile phone terminal of the administrator.

[0014] Furthermore, the specific process of the test analysis module analyzing the stress test process of the excitation device includes: marking the product to be tested corresponding to the excitation source as the test object, summing and averaging all elements in the excitation set to obtain the stress test value, retrieving the angle range, frequency range and continuous range corresponding to the stress test value through the storage module, and obtaining the angle deviation value JP, frequency deviation value PP and continuous deviation value CP of the test object through the angle range, frequency range and continuous range; obtaining the deviation coefficient PC of the test object by numerically calculating the angle deviation value JP, frequency deviation value PP and continuous deviation value CP; and marking the screened objects in the test object through the deviation coefficient PC.

[0015] Furthermore, the process of obtaining the angle deviation value JP, the frequency deviation value PP and the duration deviation value CP includes: the angle range is the standard range of the torsion angle generated by the product after the stress test value is applied, the frequency range is the standard range of the torsion frequency generated by the product after the stress test value is applied, and the duration range is the standard range of the duration of the torsion torque acting on the product after the stress test value is applied; the average value of the maximum value and the minimum value of the angle range is marked as the angle standard value, the average value of the maximum value and the minimum value of the frequency range is marked as the frequency standard value, and the average value of the maximum value and the minimum value of the duration range is marked as the duration standard value, and the torsion angle value, torsion frequency value and duration value of the test object during the test are obtained, the absolute value of the difference between the torsion angle value and the angle standard value is marked as the angle deviation value JP, the absolute value of the torsion frequency value and the frequency deviation value is marked as the frequency deviation value PP, and the absolute value of the difference between the duration value and the duration standard value is marked as the duration deviation value CP.

[0016] Furthermore, the specific process of marking the screening objects in the test objects includes: obtaining the deviation threshold PCmax through the storage module, and comparing the deviation coefficient PC with the deviation threshold PCmax: if the deviation coefficient PC is less than the deviation threshold PCmax, it is determined that the stress test result of the test object meets the requirements; if the deviation coefficient PC is greater than or equal to the deviation threshold PCmax, it is determined that the stress test result of the test object does not meet the requirements, and the corresponding test object is marked as a screening object, and the screening object is sent to the mobile phone terminal of the administrator.

[0017] The present invention has the following beneficial effects:

[0018] 1. The threaded mounting holes are evenly distributed in the upper plate, with built-in titanium alloy pin sockets and triangular reinforcement ribs distributed on the bottom layer. Along the direction of the reinforcement ribs, it can be seen that the threaded mounting holes of the pin sockets run through the middle of the cross-sectional direction of the reinforcement ribs. The reinforcement ribs are connected to the location where the excitation source is installed. The excitation source drives the generated stress, which is transmitted to the top of the platform along the reinforcement ribs. Since all the threaded holes are on the reinforcement ribs at their connection points, the multi-point linkage of stress is correlated to the greatest extent;

[0019] 2. The mechanical properties of the stress-excited composite transmission plate are strong. The connection of the three-layer structure can meet the structural strength. Its high-strength toughness can buffer the release of stress excitation to a certain extent under the drive of multiple stress excitation sources. The relative axial torsion of the platform will be improved. The connection holes distributed on it correspond to the installation holes of X-type standard parts, standard parts A and standard parts B. One side of the surface is covered with the surface of the upper reinforcement rib of the stress excitation platform, and the other side of the surface distributes the modular standard parts according to the hole positions;

[0020] 3. The modular design of the platform solves the problem of the inability to expand the number of excitation sources. By installing spare excitation sources, the stress distribution of the platform can be adjusted and the stress excitation level of the platform can be effectively improved. The symmetrical connection of multiple standard modules connects multiple excitation sources, reducing the impact of large-area unnecessary structures and effectively increasing the stress transmission distribution. The torsion effect and the overall stress level are significantly improved.

[0021] 4. The whole process of stress test screening can be monitored and analyzed through the excitation monitoring module and the test analysis module. On the basis of realizing the stress monitoring of the excitation source output, the products that fail the stress test can be quickly screened to ensure the operating efficiency of the fault stress excitation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the diversion mechanism of the first embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a stress excitation platform according to Embodiment 1 of the present invention;

[0025] Figure 3 This is a schematic diagram of an explosion of a stress excitation platform structure according to the first embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the module combination layer structure of the first embodiment of the present invention;

[0027] Figure 5 This is a system block diagram of Embodiment 2 of the present invention.

[0028] In the figure: 1. stress excitation platform; 2. excitation source; 3. drive component; 4. flow control valve; 5. first filter; 6. switch valve; 7. small-diameter branch component; 8. mechanical control valve; 9. second filter; 10. pipeline; 11. switch solenoid valve; 12. large-diameter branch component; 13. silencer; 14. pulse solenoid valve; 15. upper plate; 16. reinforcement rib; 17. titanium alloy thread; 18. locking hole; 19. middle plate; 20. connection hole; 21. positioning hole; 22. module combination layer; 23. X-type standard parts; 24. standard part A; 25. standard part B. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the 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.

[0030] Embodiment 1

[0031] like Figure 1-4 As shown, the excitation device based on the fault stress of the electrical prototype includes a stress excitation platform 1 and a diversion mechanism. A plurality of excitation sources 2 and a driving component 3 are arranged on the side of the stress excitation platform 1. The diversion mechanism includes a first filter 5. A small-diameter branch component 7 is arranged at the rear end of the first filter 5. A switch valve 6 is arranged between the filter and the small-diameter branch component 7. A second filter 9 is arranged at the rear end of the small-diameter branch component 7. A mechanical regulating valve 8 is arranged between the small-diameter branch component 7 and the second filter 9. A flow regulating valve 4 and a switch solenoid valve 11 are arranged between the small-diameter branch component 7 and the mechanical regulating valve 8. The bottom of the second filter 9 is connected to a large-diameter branch component 12 through a pipeline 10. A pulse solenoid valve 14 is arranged between the large-diameter branch component 12 and each driving component 3; a muffler 13 is arranged at the bottom of the large-diameter branch component 12.

[0032] The driving component 3 is a moving component inside the excitation source 2. When the compressed air enters the excitation source 2 through the hose, it will push the driving component 3 to move, and finally release the kinetic energy of the component to the upper layer of the excitation platform, generating excitation stress. The excitation source 2 has a staggered hole structure inside. At the moment when the excitation stress is generated, the driving component 3 will detour to the bottom of the excitation source 2, and the internal airflow will flow out through the hose. This is the basic principle of the excitation source 2 drive. The method of controlling the diversion mechanism described in the present invention aims to control the movement frequency and timing of the component, and the stress effect finally presented is the generation of random and synchronous stress.

[0033] The diversion mechanism is a combination of multiple components. The small-diameter diversion component 7 and the large-diameter diversion component 12 both have a diversion function, and the compressed air flow flows in and out through the hose. The large-diameter diversion module is internally partitioned, and the upper part is connected to the excitation source 2 through a hose, and the lower part is connected to the outflow hose, and finally converges to the muffler 13.

[0034] The first filter 5 and the second filter 9 are intended to enhance the quality of the compressed gas and improve the state of the excitation source 2. The flow control valve, the switch valve 6 and the mechanical regulating valve 8 are for front-end control of the compressed airflow, and the pulse solenoid valve 14 is for back-end control of the compressed airflow. The effects of the two excitation stresses can only be achieved by combining the control of the two parts.

[0035] The process of generating synchronous stress includes: keeping the switch valve 6 in a normally open state, when the compressed air flows into the port of the first filter 5, passes through the small-diameter branch component 7, and enters the flow control valve 4, the control signal from the PLC controls the compressed air flow at the rear end of the valve body, keeps the on-off solenoid valve in a normally open state, and the pulse solenoid valve 14 in a normally closed state. At this time, because the pulse solenoid valve 14 is in a normally closed state, the branch air flow is blocked and the excitation source 2 cannot be driven. At this time, by setting the interval time △T of the pulse solenoid valve 14, the air flow will flow into the upper part of the large-diameter branch component 12 again at intervals, and reach the excitation source 2 through the hose connected to the branch on the component, and then push the driving component to convert kinetic energy into the stress excitation platform 1. In this process, the pulse solenoid valve 14 maintains a pulse state, and the discharge of compressed air only occurs during the pulse time of the pulse solenoid valve 14. In the process, the air flow pushes the driving components inside the multiple excitation sources 2 to generate excitation stress synchronously with the number of pulses. Similarly, by accessing the size of the flow control valve 4 at the output end of the PLC, the energy size of the overall random stress can be changed.

[0036] The modular design of the platform solves the problem that the number of excitation sources 2 cannot be expanded. By installing spare excitation sources 2, the stress distribution of the platform can be adjusted and the stress excitation level of the platform can be effectively improved. The symmetrical connection of multiple standard modules connects multiple excitation sources 2, reducing the impact of large-area unnecessary structures and effectively increasing the stress transmission distribution. The torsional effect and the overall stress level are significantly improved.

[0037] The stress excitation platform 1 includes an upper plate 15, a middle plate 19 and a bottom plate. A triangular reinforcing rib 16 is arranged at the center of the upper plate 15, and uniformly distributed titanium alloy threaded holes 17 and locking holes 18 are opened on the reinforcing rib 16; the middle plate 19 is provided with uniformly distributed connecting holes 20 corresponding to the standard parts; the lower plate includes a module assembly layer 22, and the module assembly layer 22 is provided with uniformly distributed positioning holes 21, and the module assembly layer 22 is composed of X-type standard parts 23, standard parts A24 and standard parts B25.

[0038] The main structure of the platform adopts a modular design, that is, a semi-closed shape is formed by a combination connection method of three standard parts. The stress diffusion is more uniform through a tight inside and loose outside layout. The X-type standard part 23 is arranged on the structure of the triangular reinforcement rib 16 corresponding to the upper layer of the stress excitation platform. The end connection point of the X-type standard part 23 pointing to the center point of the platform is connected to the end connection points of the other four X-type standard parts 23 through the standard part A24. The end connection point of the X-type standard part 23 pointing to the outside of the platform is then connected through the standard part B25.

[0039] Through this connection method, a symmetrical structure in a semi-closed state is formed. Since the internal distribution is closed and the connection points are dense, the external state is semi-open and the connection points are loose, thus forming a method of tight inside and loose outside. This structure brings a major feature: in addition to the center position of the X-type standard part 23 where the excitation source 2 can be installed, the standard part A24 provides additional installation points. This structural form makes the platform system flexible, the number of installation points is no longer limited, the linkage of the excitation source 2 is also strengthened, and the modular design characteristics of the system itself are reflected.

[0040] Looking from the top to the bottom of the fault stress excitation platform 1, the first layer is the upper plate 15 (the upper layer of the stress excitation platform), which is used to install load test products and fixtures. The second layer is the middle plate 19 (stress excitation composite transmission plate), which has super toughness and mechanical properties. It connects the upper layer with the inner tight and outer loose structure layer, which can meet the strength of the structure and is conducive to the occurrence of the platform torsion amplitude. The third layer is a modular combination layer, which meets the installation and expansion of the excitation source 2 and improves the distribution of stress excitation. The above three-layer structure is combined by high-strength bolts to form the platform as a whole.

[0041] The stress-excited composite transmission plate has strong mechanical properties, and the connection of the three-layer structure can meet the structural strength. Its high-strength toughness, driven by the multi-point stress excitation source 2, buffers the release of stress excitation to a certain extent, and the relative axial torsion of the platform will be improved. The connection holes 20 distributed thereon correspond to the installation holes of the X-type standard parts 23, standard parts A24 and standard parts B25. One side of the surface is covered with the surface of the upper reinforcement rib 16 of the stress excitation platform 1, and the other side of the surface distributes the modular standard parts according to the hole positions.

[0042] Embodiment 2

[0043] like Figure 5 As shown, a stress screening control system based on electrical prototype fault stress includes a processor, and the processor is communicatively connected with an excitation monitoring module, a test analysis module and a storage module.

[0044] The excitation monitoring module is used to monitor and analyze the output stress of the excitation source 2 of the excitation device: when the fault stress test is carried out on the same group of power prototypes, the torque value of the output stress of each excitation source 2 is obtained, and an excitation set is formed by the torque values ​​of the output stress of all excitation sources 2. The variance of all elements of the excitation set is calculated to obtain the excitation uniformity coefficient, and the excitation uniformity threshold is obtained through the storage module, and the excitation uniformity coefficient is compared with the excitation uniformity threshold: if the excitation uniformity coefficient is less than the excitation uniformity threshold, it is determined that the output stress of the excitation source 2 of the excitation device meets the requirements, and a test analysis signal is generated and sent to the test analysis module; if the excitation uniformity coefficient is greater than or equal to the excitation uniformity threshold, it is determined that the output stress of the excitation source 2 of the excitation device does not meet the requirements, and an output adjustment signal is generated and sent to the mobile terminal of the administrator.

[0045] The test analysis module is used to analyze the stress test process of the excitation device: mark the product to be tested corresponding to the excitation source 2 as the test object, sum and average all elements in the excitation set to obtain the stress test value, and retrieve the angle range, frequency range and duration range corresponding to the stress test value through the storage module. The angle range is the standard range of the torsion angle generated by the product after the stress test value is applied, the frequency range is the standard range of the torsion frequency generated by the product after the stress test value is applied, and the duration range is the standard range of the duration of the torsion torque on the product after the stress test value is applied; mark the average value of the maximum and minimum values ​​of the angle range as the angle standard value, mark the average value of the maximum and minimum values ​​of the frequency range as the frequency standard value, and mark the average value of the maximum and minimum values ​​of the duration range as the duration standard value, obtain the torsion angle value, torsion frequency value and duration value of the test object during the test, and mark the absolute value of the difference between the torsion angle value and the angle standard value as the angle deviation value JP , mark the absolute value of the torsion frequency value and the frequency deviation value as the frequency deviation value PP, and mark the absolute value of the difference between the duration value and the duration standard value as the duration deviation value CP; obtain the deviation coefficient PC of the test object through the formula, wherein w1, w2 and w3 are all proportional coefficients, and w1>w2>w3>1; obtain the deviation threshold PCmax through the storage module, and compare the deviation coefficient PC with the deviation threshold PCmax: if the deviation coefficient PC is less than the deviation threshold PCmax, it is determined that the stress test result of the test object meets the requirements; if the deviation coefficient PC is greater than or equal to the deviation threshold PCmax, it is determined that the stress test result of the test object does not meet the requirements, and the corresponding test object is marked as a screening object, and the screening object is sent to the mobile phone terminal of the administrator; the stress test screening process is monitored and analyzed throughout the entire process, and on the basis of realizing the output stress monitoring of the excitation source 2, the products that fail the stress test can be quickly screened to ensure the operation efficiency of the fault stress excitation device.

[0046] The excitation device and stress screening control system based on the fault stress of the electrical prototype generate synchronous stress through the stress excitation device when working: keep the switch valve 6 in the normally open state, when the compressed air flows into the port of the first filter 5, it passes through the small-diameter branch component 7 and enters the flow regulating valve 4, and the control signal from the PLC controls the compressed air flow at the rear end of the valve body, keeps the on-off solenoid valve in the normally open state, and the pulse solenoid valve 14 in the normally closed state. At this time, because the pulse solenoid valve 14 is in the normally closed state, the branch airflow is blocked and the excitation source 2 cannot be driven. At this time, by setting the interval time △T of the pulse solenoid valve 14, the airflow will flow into the upper part of the large-diameter branch component 12 again at intervals, and reach the excitation source 2 through the hose connected to the branch on the component, and then push the driving component to convert kinetic energy into the stress excitation platform 1. During this process, the pulse solenoid valve 14 maintains a pulse state, and the discharge of compressed air only occurs within the pulse time of the pulse solenoid valve 14. During the process, the airflow pushes the driving components inside multiple excitation sources 2 to generate excitation stress synchronously with the number of pulses; then the excitation uniformity coefficient of the excitation set is calculated, and the excitation uniformity coefficient is used to determine whether the output stress of the excitation source 2 meets the requirements, and stress test analysis is performed when the requirements are met.

[0047] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0048] The above formulas are obtained by collecting a large amount of data and performing software simulation to select a formula close to the actual value. The coefficients in the formula are set by technicians in this field according to actual conditions; for example: Formula A technician in this field collects multiple groups of sample data and sets a corresponding deviation coefficient for each group of sample data; substitutes the set deviation coefficient and the collected sample data into the formula, and any three formulas constitute a three-variable linear equation system. The calculated coefficients are screened and averaged, and the values ​​of w1, w2 and w3 are obtained to be 3.47, 2.28 and 2.06 respectively;

[0049] The size of the coefficient is to quantify each parameter to obtain a specific value for subsequent comparison. The size of the coefficient depends on the amount of sample data and the technical personnel in this field preliminarily setting the corresponding deviation coefficient for each set of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value, such as the deviation coefficient is proportional to the angle deviation value.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand the present invention.

[0052] Understand and use the present invention.The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The device for exciting fault stress of electrical prototype is characterized by: It comprises a stress excitation platform (1) and a diversion mechanism, wherein a plurality of excitation sources (2) and a driving component (3) are arranged on the side of the stress excitation platform (1), and the diversion mechanism comprises a first filter (5), a small-diameter branch component (7) is arranged at the rear end of the first filter (5), a switch valve (6) is arranged between the filter and the small-diameter branch component (7), a second filter (9) is arranged at the rear end of the small-diameter branch component (7), a mechanical regulating valve (8) is arranged between the small-diameter branch component (7) and the second filter (9), a flow regulating valve (4) and a switch electromagnetic valve (11) are arranged between the small-diameter branch component (7) and the mechanical regulating valve (8), the bottom of the second filter (9) is connected to a large-diameter branch component (12) through a pipeline (10), and a pulse electromagnetic valve (14) is arranged between the large-diameter branch component (12) and each driving component (3); and a muffler (13) is arranged at the bottom of the large-diameter branch component (12); It includes a processor, and the processor is communicatively connected with an excitation monitoring module, a test analysis module and a storage module; The excitation monitoring module is used to monitor and analyze the output stress of the excitation source (2) of the excitation device, and when the output stress of the excitation source (2) of the excitation device meets the requirements, a test analysis signal is generated and the test analysis signal is sent to the test analysis module; The test analysis module is used to analyze the stress test process of the excitation device and mark the products whose stress test results do not meet the requirements as screening objects, and send the screening objects to the mobile phone terminal of the manager; The specific process of the excitation monitoring module monitoring and analyzing the output stress of the excitation source (2) of the excitation device includes: when the same group of power prototypes are subjected to fault stress testing, obtaining the torque value of the output stress of each excitation source (2), forming an excitation set from the torque values ​​of the output stress of all the excitation sources (2), performing variance calculation on all elements of the excitation set to obtain an excitation uniformity coefficient, obtaining an excitation uniformity threshold through a storage module, comparing the excitation uniformity coefficient with the excitation uniformity threshold, and judging whether the output stress of the excitation source (2) of the excitation device meets the requirements through the comparison result; The specific process of comparing the excitation uniformity coefficient with the excitation uniformity threshold includes: if the excitation uniformity coefficient is less than the excitation uniformity threshold, it is determined that the output stress of the excitation source (2) of the excitation device meets the requirement; if the excitation uniformity coefficient is greater than or equal to the excitation uniformity threshold, it is determined that the output stress of the excitation source (2) of the excitation device does not meet the requirement, an output adjustment signal is generated and the output adjustment signal is sent to the mobile phone terminal of the administrator.

2. The device for exciting fault stress based on electrical prototype according to claim 1, characterized in that: The stress excitation platform (1) comprises an upper plate (15), a middle plate (19) and a bottom plate, wherein a triangular reinforcing rib (16) is arranged at the center of the upper plate (15), and the reinforcing rib (16) is provided with uniformly distributed titanium alloy threaded holes (17) and locking holes (18); the middle plate (19) is provided with uniformly distributed connection holes (20) corresponding to standard parts; the bottom plate comprises a module assembly layer (22), and the module assembly layer (22) is provided with uniformly distributed positioning holes (21), and the module assembly layer (22) is composed of an X-type standard part (23), a standard part A (24) and a standard part B (25).

3. The device for exciting fault stress based on electrical prototype according to claim 2, characterized in that: The specific process of the test analysis module analyzing the stress test process of the excitation device includes: marking the product to be tested corresponding to the excitation source (2) as the test object, summing up all elements in the excitation set and taking the average value to obtain the stress test value, retrieving the angle range, frequency range and duration range corresponding to the stress test value through the storage module, and obtaining the angle deviation value JP, frequency deviation value PP and duration deviation value CP of the test object through the angle range, frequency range and duration range; obtaining the deviation coefficient PC of the test object by numerically calculating the angle deviation value JP, frequency deviation value PP and duration deviation value CP; and marking the screening object in the test object through the deviation coefficient PC.

4. The device for exciting fault stress based on electrical prototype according to claim 3, characterized in that: The process of obtaining the angle deviation value JP, the frequency deviation value PP and the duration deviation value CP includes: the angle range is the standard range of the torsion angle generated by the product after the stress test value is applied, the frequency range is the standard range of the torsion frequency generated by the product after the stress test value is applied, and the duration range is the standard range of the duration of the torsion torque acting on the product after the stress test value is applied; the average value of the maximum and minimum values ​​of the angle range is marked as the angle standard value, the average value of the maximum and minimum values ​​of the frequency range is marked as the frequency standard value, and the average value of the maximum and minimum values ​​of the duration range is marked as the duration standard value, and the torsion angle value, torsion frequency value and duration value of the test object during the test are obtained, the absolute value of the difference between the torsion angle value and the angle standard value is marked as the angle deviation value JP, the absolute value of the torsion frequency value and the frequency deviation value is marked as the frequency deviation value PP, and the absolute value of the difference between the duration value and the duration standard value is marked as the duration deviation value CP.

5. The device for exciting fault stress based on electrical prototype according to claim 4, characterized in that: The specific process of marking the screening objects in the test objects includes: obtaining the deviation threshold PCmax through the storage module, and comparing the deviation coefficient PC with the deviation threshold PCmax: if the deviation coefficient PC is less than the deviation threshold PCmax, it is determined that the stress test result of the test object meets the requirements; if the deviation coefficient PC is greater than or equal to the deviation threshold PCmax, it is determined that the stress test result of the test object does not meet the requirements, and the corresponding test object is marked as a screening object, and the screening object is sent to the mobile phone terminal of the administrator.

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