Response control-based power take-off shaft vibration test method, device and equipment

Abstract

The present application relates to a kind of power split shaft vibration test methods, devices and equipment based on response control, it is related to aerospace field.The technical scheme will power split shaft and tool be installed in vibration table, different gradient tightening torque and multistage vibration load are applied, response value is collected to construct load and response curve family;When given input load and required response, traverse curve family with response as ordinate, select adjacent abscissa and corresponding curve, and the target tightening torque is calculated by linear interpolation;Load is applied after fastening with target torque, if the measured response error is out of range, based on measured response iterative calculation, until error is up to standard to determine final torque.In this case, the response on shaft can be accurately adjusted, and the response can be controlled within a reasonable range, which can avoid under-test and effectively reduce over-test phenomenon, ensure that the power split shaft is reasonably evaluated by vibration load, expose possible problems in design in advance, shorten development cycle and reduce research and development costs.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, and in particular to a method, apparatus and equipment for testing the vibration of a power output shaft based on response control. Background Technology

[0002] In aerospace, high-end equipment, and other fields, the power splitter shaft is a core transmission component, and its vibration resistance and durability directly affect the system's reliability. Vibration testing is a crucial step in verifying this performance. The test load spectrum is formulated based on national military standards and actual operating load conditions, aiming to simulate the vibration environment throughout the entire life cycle. However, the nonlinear structural characteristics of the power splitter shaft result in a nonlinear coupling relationship between its vibration response and acceleration excitation, making precise control of the vibration response at key locations on the shaft a technical challenge.

[0003] Currently, existing vibration testing fixtures and methods have significant limitations: fixed fixtures lack dynamic adjustment mechanisms, often leading to significant deviations in test acceleration response from design input, resulting in overtesting risks, premature shaft failure or damage, and rendering test data unusable for design verification; while fully flexible fixtures, by abandoning response control, are prone to undertesting, preventing the exposure of potential design flaws, leading to malfunctions in practical applications, and causing extended R&D cycles and increased costs. There is currently a technological gap in the design of such testing fixtures and methods in China, urgently requiring a vibration testing fixture and method that combines adjustment accuracy and reliability to overcome the bottlenecks in power split shaft testing research and engineering design. Summary of the Invention

[0004] The purpose of this invention is to provide a power output shaft vibration test method, apparatus, and equipment based on response control, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, the present invention provides a power output shaft vibration test method based on response control, the method comprising:

[0007] S1. Install the power output shaft and vibration test fixture on the vibration table. Adjust the damping force generated by the damping sleeve by applying different gradient tightening torques to the lock nut. Simultaneously apply multiple levels of vibration loads at the first and second vibration control points, and collect the acceleration response values ​​at the vibration response points to construct a family of curves reflecting the relationship between load input and response value.

[0008] S2. For a specific power output shaft, when given an input load and required response, the curve family is traversed with the required response as the vertical axis value to obtain the corresponding horizontal axis value. The two horizontal axis values ​​adjacent to the given input load and the curves corresponding to these two values ​​are selected, and the corresponding target tightening torque is calculated based on the linear interpolation algorithm.

[0009] S3. Tighten the lock nut with the target tightening torque and apply the given input load. Obtain the measured response value on the power output shaft. If the error between the measured response value and the required response exceeds the set range, use the measured response value as the new ordinate value and repeat the calculation process of step S2 to update the tightening torque and continuously iterate and optimize until the final response error meets the requirements, and determine the final tightening torque.

[0010] In one possible implementation, in step S1:

[0011] The family of curves reflects the nonlinear relationship between the deformation of the damping sleeve and the structural damping characteristics under different tightening torques.

[0012] In one possible implementation, in step S1:

[0013] The vibration load is applied in at least the following ways: sinusoidal frequency sweep, random vibration, and impact response spectrum.

[0014] In one possible implementation, in step S2:

[0015] The linear interpolation algorithm uses a two-point linear extrapolation model to calculate the target tightening torque based on the tightening torque corresponding to different curves and the adjacent horizontal coordinate values.

[0016] In one possible implementation, in step S3:

[0017] The iterative optimization process includes at least two calculations, and the adjustment of the tightening torque after each iteration ensures that the damping parameters change smoothly.

[0018] Secondly, the present invention provides a power output shaft vibration testing device based on response control, comprising:

[0019] Power output shaft; and

[0020] The vibration test fixture consists of two parts, located at the two ends of the power output shaft. Each part includes a spline shaft connected to the end of the power output shaft, and a damping sleeve, a spline sleeve, a locking plate, and a locking nut sequentially sleeved on the spline shaft along the axial direction. The spline sleeve is fixed to the base plate of the fixture.

[0021] The two vibration test fixtures are equipped with a first vibration control point and a second vibration control point on their spline sleeves, respectively, and a vibration response point is installed at the middle position of the power output shaft.

[0022] In one possible implementation, the first vibration control point and the second vibration control point are used as input control of the vibration load spectrum by control acceleration sensors, and the control weights of the two control acceleration sensors are the same.

[0023] The vibration response point serves as a response acceleration sensor to monitor the acceleration response at the midpoint of the power output shaft.

[0024] In one possible implementation, the inner hole of the damping sleeve mates with the outer circular surface of the spline shaft, and the outer circular surface of the damping sleeve mates with the inner hole of the spline sleeve.

[0025] The spline shaft is threadedly connected to the locking nut. When the locking nut is tightened, the locking plate, the spline sleeve, and the damping sleeve can be pressed onto the spline shaft axially. By adjusting the tightening torque of the locking nut, the pressure on the damping sleeve can be changed, thereby adjusting the damping force it generates.

[0026] In one possible implementation, the end of the power output shaft is connected to the spline shaft via a first connecting screw;

[0027] The spline sleeve is fixed to the tooling base plate by a second connecting screw.

[0028] Thirdly, the present invention provides a computer device including a processor and a memory, wherein the memory stores at least one instruction, at least one program, code set or instruction set, and the processor can load and execute at least one instruction, at least one program, code set or instruction set to implement the power output shaft vibration test method based on response control provided above.

[0029] The beneficial effects of the technical solution provided by this invention include at least the following:

[0030] This technical solution mounts the power output shaft and tooling on a vibration table, applies different gradient tightening torques and multi-level vibration loads, and collects response values ​​to construct a family of load and response curves. Given an input load and a required response, the family of curves is traversed using the response as the ordinate, adjacent abscissas and corresponding curves are selected, and the target tightening torque is calculated through linear interpolation. After tightening with the target torque, a load is applied. If the measured response error exceeds the range, iterative calculations are performed based on the measured response until the error meets the standard to determine the final torque. Under these conditions, precise adjustment of the shaft response can be achieved, controlling the response within a reasonable range. This avoids undertesting and effectively mitigates overtesting, ensuring that the power output shaft undergoes reasonable vibration load testing, exposing potential design problems in advance, and achieving a closed-loop verification process during the design phase. This shortens the development cycle and reduces R&D costs. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0032] Figure 1 The diagram shows a structural schematic of a power split shaft vibration testing device based on response control, provided by an exemplary embodiment of the present invention.

[0033] Figure 2 The diagram shows a cross-sectional schematic of a power output shaft vibration testing device based on response control, provided by an exemplary embodiment of the present invention.

[0034] Figure 3 The diagram illustrates the control principle of a power output shaft vibration testing device based on response control, according to an exemplary embodiment of the present invention.

[0035] Figure 4 The diagram shows a flow chart of a power splitting shaft vibration test method based on response control, provided by an exemplary embodiment of the present invention.

[0036] Figure 5 The diagram shows a schematic structural representation of a computer device for performing a response-controlled vibration test method for a power output shaft, according to an exemplary embodiment of the present invention.

[0037] In the picture:

[0038] 100. Power output shaft; 101. First connecting screw;

[0039] 200. Vibration testing fixture; 201. Fixture base plate; 202. Spline sleeve; 203. Locking nut; 204. Locking plate; 205. Spline shaft; 206. Damping sleeve;

[0040] 300. Second connecting screw;

[0041] 400, First vibration control point; 401, Second vibration control point; 402, Vibration response point. Detailed Implementation

[0042] 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.

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0044] Figure 1 This diagram illustrates a structural schematic of a power splitter shaft vibration testing device based on response control, according to an exemplary embodiment of the present invention. Figure 2 This diagram shows a cross-sectional schematic of a power split shaft vibration testing device based on response control, according to an exemplary embodiment of the present invention. Figure 3 This diagram illustrates the control principle of a response-controlled vibration testing device for a power output shaft according to an exemplary embodiment of the present invention. The device includes a power output shaft 100 and two vibration testing fixtures 200, located at opposite ends of the power output shaft 100. Each fixture includes a splined shaft 205 connected to the end of the power output shaft 100, and a damping sleeve 206, a splined sleeve 202, a locking plate 204, and a locking nut 203 sequentially mounted axially on the splined shaft 205. The splined sleeve 202 is fixed to a fixture base plate 201. A first vibration control point 400 and a second vibration control point 401 are respectively installed on the splined sleeves 202 of the two vibration testing fixtures 200, and a vibration response point 402 is installed at the middle position of the power output shaft 100. The first vibration control point 400 and the second vibration control point 401 are used as control acceleration sensors for input control of the vibration load spectrum, and the control weights of the two control acceleration sensors are the same; the vibration response point 402 is used as a response acceleration sensor to monitor the acceleration response at the middle position of the power output shaft 100.

[0045] In this embodiment, the vibration testing device forms a mechanical transmission path by rigidly connecting the vibration testing fixtures arranged symmetrically at both ends to the power output shaft. The damping force of the system is controlled by adjusting the radial compression of the damping sleeve through the cooperation of a damping sleeve and a locking nut, with the tightening torque continuously changing the torque. The spline sleeve is fixed to the base plate of the fixture to ensure uniform vibration load input. Equally weighted vibration control points at both ends achieve symmetrical vibration load input to avoid off-center load interference. The intermediate response point monitors the acceleration response at key positions of the shaft in real time, constructing an input control, response feedback, and closed-loop adjustment mechanism. Based on the nonlinear mapping relationship between damping parameters and vibration response, it effectively solves the problem of over-testing or under-testing in traditional fixtures, ensuring accurate matching between the test load spectrum and the actual response. This provides reliable data support for the durability performance evaluation and design optimization of the power output shaft, overcoming the control challenges of nonlinear structural vibration testing.

[0046] In detail, the inner hole of the damping sleeve 206 mates with the outer surface of the splined shaft 205, and the outer surface of the damping sleeve 206 mates with the inner hole of the splined sleeve 202. The splined shaft 205 is threadedly connected to the locking nut 203. When the locking nut 203 is tightened, the locking plate 204, the splined sleeve 202, and the damping sleeve 206 are pressed axially onto the splined shaft 205. By adjusting the tightening torque of the locking nut 203, the pressure on the damping sleeve 206 can be changed, thereby adjusting the damping force it generates. The end of the power output shaft 100 is connected to the splined shaft 205 via a first connecting screw 101; the splined sleeve 202 is fixed to the tooling base plate 201 via a second connecting screw 300.

[0047] In this embodiment, the damping sleeve mates with the inner and outer surfaces of the splined shaft and the splined sleeve to form a stable mechanical transmission path. When the lock nut is tightened, the locking plate, splined sleeve, and damping sleeve are axially compressed, changing the degree of compression on the damping sleeve and thus adjusting the damping force it generates. This allows for flexible control of the vibration characteristics of the power output shaft. The screw connection between the splined shaft and the end of the power output shaft, and the fixing of the splined sleeve to the tooling base plate, ensure stable transmission of vibration loads, providing reliable and adjustable test conditions for the vibration test of the power output shaft.

[0048] It is worth mentioning that the locking plate is secured in the groove of the spline sleeve by the protruding ears, preventing itself from rotating when the locking nut is tightened; after the tightening torque is adjusted to the correct position, the locking plate is tapped to deform it, thereby locking the nut and preventing it from loosening, ensuring the connection of the entire vibration test fixture is tight and ensuring the stability of the damping sleeve under pressure.

[0049] Figure 4 The diagram illustrates a flow chart of a response-controlled power splitter vibration testing method according to an exemplary embodiment of the present invention. This response-controlled power splitter vibration testing method is applied to the aforementioned response-controlled power splitter vibration testing apparatus. The method includes:

[0050] Step S1: Install the power output shaft and vibration test fixture on the vibration table. Adjust the damping force generated by the damping sleeve by applying different gradient tightening torques to the locking nut. Simultaneously apply multiple levels of vibration loads at the first and second vibration control points, and collect the acceleration response values ​​at the vibration response points to construct a family of curves reflecting the relationship between load input and response values.

[0051] In the embodiments of this application, the family of curves reflects the nonlinear relationship between the deformation of the damping sleeve and the structural damping characteristics under different tightening torques. The vibration load is applied in at least the following ways: sinusoidal frequency sweep, random vibration, and impact response spectrum.

[0052] In some embodiments, step S1 includes:

[0053] Step S11: Install the power output shaft and vibration test fixture on the vibration table, tighten the locking nut with a tightening torque of 5 N·m, apply vibration load through the first vibration control point and the second vibration control point, and the equivalent Grms of the load are 5g, 10g, 15g, 20g, 25g, 30g, 35g and 40g respectively. Simultaneously collect the acceleration response value of the vibration response point and construct the load input and response value curve A1.

[0054] Step S12: Adjust the tightening torque of the lock nut to 10 N·m, 15 N·m, 20 N·m, 25 N·m, 30 N·m, and 35 N·m in sequence, and repeat step S11 above to obtain curves A2 to A7 respectively, forming a complete family of curves showing the relationship between load input and response value.

[0055] It is worth mentioning that this step, by applying different levels of tightening torque to the locking nut, can change the deformation of the damping sleeve, thereby controlling the structural damping characteristics. Simultaneously, by applying vibration loads of multiple orders of magnitude at the vibration control point and collecting the acceleration at the response point, vibration response data under different operating conditions can be obtained. The constructed family of curves intuitively presents the relationship between load input and response value, providing data support for subsequent calculation of appropriate tightening torque based on target parameters and achieving precise vibration response control.

[0056] Step S2: For a specific power output shaft, when given an input load and required response, traverse the family of curves with the required response as the vertical axis value to obtain the corresponding horizontal axis value, filter out the two horizontal axis values ​​adjacent to the given input load and the curves corresponding to these two values, and calculate the corresponding target tightening torque based on the linear interpolation algorithm.

[0057] In this embodiment, the linear interpolation algorithm uses a two-point linear extrapolation model to calculate the target tightening torque based on the tightening torque corresponding to different curves and the adjacent abscissa values.

[0058] In some embodiments, step S2 includes:

[0059] Step S21: For the target power output axis, when the input load is B0 and the required response is B1, use B1 as the vertical coordinate value to traverse the family of curves A1 to A7 and obtain the corresponding horizontal coordinate value.

[0060] Step S22: Filter out the two values ​​C1 and C2 that are closest to B0 in the horizontal coordinate values, and the corresponding curves A_i and A_j. The tightening torques corresponding to curves A_i and A_j are D1 and D2, respectively.

[0061] Step S23: Based on the linear interpolation algorithm, calculate the target tightening torque D0 according to the formula D0=D1+(B0-C1)×(D2-D1) / (C2-C1).

[0062] It is worth mentioning that this step, based on the constructed family of curves, achieves a precise mapping from the target response to the tightening torque. By using the required response as the ordinate to traverse the family of curves, the abscissa values ​​and corresponding curves adjacent to the given input load are selected. Using a linear interpolation algorithm, combined with the tightening torques corresponding to different curves, the target tightening torque that satisfies the target response can be calculated. This process provides crucial parameter setting basis for vibration testing, enabling precise control of the vibration response of the power output shaft and effectively solving the parameter control problem in nonlinear structural vibration testing.

[0063] Step S3: Tighten the lock nut with the target tightening torque and apply the given input load. Obtain the measured response value on the power output shaft. If the error between the measured response value and the required response exceeds the set range, use the measured response value as the new ordinate value and repeat the calculation process of step S2. Update the tightening torque and continuously iterate and optimize until the final response error meets the requirements. Determine the final tightening torque.

[0064] In the embodiments of this application, the iterative optimization process includes at least two calculations, and the adjustment of the tightening torque after each iteration ensures that the damping parameters change smoothly.

[0065] In some embodiments, step S3 includes:

[0066] Step S31: Tighten the lock nut with a tightening torque D0, apply an acceleration load B0, and obtain the measured response value B1' at the vibration response point;

[0067] Step S32: If |(B1'-B1) / B1|>5%, then replace B1 with B1' and repeat the interpolation calculation in step S2 to update the tightening torque to D0'.

[0068] Step S33: Repeat the above iterative process until the final convergence response value B1'' of the iterative correction process is obtained. The response error satisfies |(B1''-B1) / B1|≤5%, and the final tightening torque D0' is determined.

[0069] It is worth mentioning that this step achieves precise control of the vibration response through closed-loop iterative optimization. First, the nut is fixed with the target tightening torque and a load is applied to obtain the measured response value. If the error exceeds the required response range, the measured value is used as a new parameter, and the tightening torque is recalculated and adjusted. Through multiple iterations, the response error is gradually reduced, ensuring that the damping parameter changes smoothly after each adjustment, until the response error meets the requirements. The determined final tightening torque ensures that the power output shaft achieves the expected vibration response in the test, improving the reliability and effectiveness of the test results.

[0070] Figure 5 This illustration shows a schematic diagram of a computer device for performing a response-controlled vibration test method for a power output shaft, according to an exemplary embodiment of the present invention. The computer device includes:

[0071] The processor 501 includes one or more processing cores. The processor 501 executes various functional applications and data processing by running software programs and modules.

[0072] The receiver 502 and transmitter 503 can be implemented as a communication component, which can be a communication chip. Optionally, this communication component can include signal transmission functionality. That is, the transmitter 503 can be used to transmit control signals to the image acquisition device and the scanning device, and the receiver 502 can be used to receive corresponding feedback commands.

[0073] The memory 504 is connected to the processor 501 via the bus 505.

[0074] The memory 504 can be used to store at least one instruction, and the processor 501 is used to execute the at least one instruction to implement the various steps in the above method embodiments.

[0075] This invention also provides a computer-readable storage medium storing at least one instruction, at least one program, code set, or instruction set, which can be loaded and executed by a processor to implement the above-described response control-based power output shaft vibration test method.

[0076] The present invention also provides a computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the power splitter shaft vibration testing method based on response control as described in any of the above embodiments.

[0077] Optionally, the computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), solid-state drive (SSD), or optical disk, etc. The random access memory may include resistive random access memory (ReRAM) and dynamic random access memory (DRAM). The sequence numbers of the above embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0078] It is understood that the specific examples in this document are only intended to help those skilled in the art better understand this disclosure, and are not intended to limit the scope of the invention.

[0079] It is understood that in the various embodiments of this specification, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of this disclosure.

[0080] It is understood that the various implementation methods described in this specification can be implemented individually or in combination, and this disclosure does not limit them.

[0081] Unless otherwise stated, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this specification. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items. The singular forms "a," "the," and "the" as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0082] It is understood that the processor disclosed herein can be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method implementation can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in this disclosure. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed herein can be directly implemented by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0083] It is understood that the memory in this disclosure can be volatile memory or non-volatile memory, or may include both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM). It should be noted that the memory in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0084] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this specification.

[0085] The above description is merely a specific embodiment of this specification, but the scope of protection of this invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this specification should be included within the scope of protection of this specification. Therefore, the scope of protection of this invention should be determined by the scope of the claims.

Claims

1. A method for testing the vibration of a power splitter shaft based on response control, characterized in that, The method is implemented using a power output shaft vibration testing device based on response control. The device includes: a power output shaft (100); and two vibration testing fixtures (200), located at both ends of the power output shaft (100). Each fixture includes a splined shaft (205) connected to the end of the power output shaft (100), and a damping sleeve (206), a splined sleeve (202), a locking plate (204), and a locking nut (203) sequentially sleeved on the splined shaft (205) along the axial direction. The splined sleeve (202) is fixed on the fixture base plate (201). A first vibration control point (400) and a second vibration control point (400) are respectively installed on the splined sleeves (202) of the two vibration testing fixtures (200). Vibration response point (402) is installed at the middle position of the power output shaft (100); the inner hole of the damping sleeve (206) is engaged with the outer circular surface of the spline shaft (205), and the outer circular surface of the damping sleeve (206) is engaged with the inner hole of the spline sleeve (202); the spline shaft (205) is threadedly connected to the locking nut (203). When the locking nut (203) is tightened, the locking plate (204), the spline sleeve (202) and the damping sleeve (206) can be pressed onto the spline shaft (205) along the axial direction. By adjusting the tightening torque of the locking nut (203), the pressure of the damping sleeve (206) can be changed, thereby adjusting the damping force it generates. The method includes: S1. Install the power output shaft and vibration test fixture on the vibration table. Adjust the damping force generated by the damping sleeve by applying different gradient tightening torques to the lock nut. Simultaneously apply multiple levels of vibration loads at the first and second vibration control points, and collect the acceleration response values ​​at the vibration response points to construct a family of curves reflecting the relationship between load input and response value. S2. For a specific power output shaft, when given an input load and required response, the curve family is traversed with the required response as the vertical axis value to obtain the corresponding horizontal axis value. The two horizontal axis values ​​adjacent to the given input load and the curves corresponding to these two values ​​are selected, and the corresponding target tightening torque is calculated based on the linear interpolation algorithm. S3. Tighten the lock nut with the target tightening torque and apply the given input load. Obtain the measured response value on the power output shaft. If the error between the measured response value and the required response exceeds the set range, use the measured response value as the new ordinate value and repeat the calculation process of step S2 to update the tightening torque and continuously iterate and optimize until the final response error meets the requirements, and determine the final tightening torque.

2. The power splitting shaft vibration test method based on response control according to claim 1, characterized in that, In step S1: The family of curves reflects the nonlinear relationship between the deformation of the damping sleeve and the structural damping characteristics under different tightening torques.

3. The power output shaft vibration test method based on response control according to claim 1, characterized in that, In step S1: The vibration load is applied in at least the following ways: sinusoidal frequency sweep, random vibration, and impact response spectrum.

4. The power splitting shaft vibration test method based on response control according to claim 1, characterized in that, In step S2: The linear interpolation algorithm uses a two-point linear extrapolation model to calculate the target tightening torque based on the tightening torque corresponding to different curves and the adjacent horizontal coordinate values.

5. The power splitting shaft vibration test method based on response control according to claim 1, characterized in that, In step S3: The iterative optimization process includes at least two calculations, and the adjustment of the tightening torque after each iteration ensures that the damping parameters change smoothly.

6. The power splitting shaft vibration test method based on response control according to claim 1, characterized in that, The first vibration control point (400) and the second vibration control point (401) are used as input control of the vibration load spectrum by the control acceleration sensor, and the control weights of the two control acceleration sensors are the same; The vibration response point (402) serves as a response acceleration sensor to monitor the acceleration response at the middle position of the power output shaft (100).

7. The power splitting shaft vibration test method based on response control according to claim 1, characterized in that, The end of the power output shaft (100) is connected to the spline shaft (205) by a first connecting screw (101); The spline sleeve (202) is fixed to the tooling base plate (201) by the second connecting screw (300).

8. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one instruction, at least one program, code set, or instruction set, the at least one instruction, at least one program, code set, or instruction set being loaded and executed by the processor to implement the power output shaft vibration test method based on response control as described in any one of claims 1 to 7.

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