Vibration performance test method and device

Abstract

The invention discloses a vibration performance test method and device, and relates to the technical field of micro-vibration simulation. The method is applied to a vibration excitation device and comprises the steps that a vibration signal is received, the vibration signal is generated according to a target simulation request sent by a target user, and the target simulation request is a request for vibration simulation of a target to-be-tested piece in a vibration environment; determining a driving force according to the vibration signal; performing a vibration test on the target to-be-tested piece based on the driving force, wherein the supporting piece is used for blocking the vibration force sent to the rigid platform by the ground; and if the target to-be-tested piece is in the vibration stopping state, sending a test result to the target user. According to the technical scheme, energy loss in the vibration process is reduced, it is ensured that the vibration signals can be accurately transmitted to the target to-be-tested piece, and effective simulation of the low-frequency characteristics of the whole vibration table top is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of micro-vibration simulation, and in particular to a test method and device for vibration performance. Background Art

[0002] Currently, products are exposed to a variety of vibration environments during transportation, installation and actual application. Vibration simulation experiments, as an effective evaluation method, can simulate these real vibration conditions and then comprehensively consider the performance and reliability of the products.

[0003] Due to the prevalence of low-frequency vibration in many application scenarios, it is particularly important to implement low-frequency vibration simulation on products. Low-frequency vibration simulation can more accurately simulate the working conditions of products in actual operating environments, thereby revealing problems that are difficult to detect under conventional test conditions, such as looseness of mechanical components and functional failure of electronic components. These problems may be hidden in conventional test environments, but may be fully revealed under low-frequency vibration conditions. However, the current implementation of low-frequency simulation mainly relies on the application of electric exciters, but electric exciters are easily limited by the requirements of their internal structures for other characteristics, resulting in poor frequency response of electric vibration tables in the low-frequency band, and unable to achieve effective simulation of the low-frequency characteristics of the entire vibration table.

[0004] Therefore, there is an urgent need for a vibration performance testing method and device that can solve the above-mentioned technical problems. Summary of the invention

[0005] The present application provides a vibration performance test method and device. The method causes an exciter to vibrate a rigid platform by sending a vibration signal. The rigid platform is fixedly connected to the ground via a support member, thereby reducing energy loss during the vibration process and ensuring that the vibration signal can be accurately transmitted to the target test piece, thereby achieving effective simulation of the low-frequency characteristics of the entire vibration table.

[0006] In the first aspect, the present application provides a vibration performance test method, which is applied to a vibration excitation device, wherein the vibration exciter and a rigid platform are connected to the rigid platform, and the rigid platform is fixedly connected to the ground through a support member, and a target test piece is placed on the rigid platform. The method includes: receiving a first vibration signal, the first vibration signal is generated according to a target simulation request sent by a target user, the target simulation request is a request for the target test piece to perform a vibration simulation in a vibration environment; determining a first driving force according to the first vibration signal; performing a vibration test on the target test piece based on the first driving force, and the support member is used to block the vibration force sent by the ground to the rigid platform; if the target test piece is in a stopped vibration state, obtaining a first test result, and sending the first test result to the target user.

[0007] By adopting the above technical solution, the first vibration signal generated by the target simulation request sent by the target user is received, and then the first driving force is determined according to the first vibration signal. The target test piece is subjected to a vibration test based on the first driving force. During the vibration test, the support member blocks the vibration force sent from the underground to the rigid platform, so that the first driving force will not be transmitted to the ground, and the vibration force of the ground will not be transmitted to the rigid platform, thereby reducing the energy loss of the rigid platform during the vibration process, ensuring that the first vibration signal can be accurately transmitted to the target test piece. When it is determined that the target test piece is in a stopped vibration state, the first test result is obtained, and the first test result is sent to the target user, so that the user can understand the test situation in time, effectively solving the problem that the electric exciter is susceptible to the requirements of its internal structure on other characteristics, resulting in poor low-frequency response. The excitation device can more accurately simulate the low-frequency characteristics of the target test piece in a real vibration environment, thereby improving the accuracy and reliability of the vibration test.

[0008] Optionally, a vibration test is performed on the target test piece based on the first driving force, specifically including: an exciter receives a first vibration signal and generates a first driving force according to the first vibration signal; the exciter drives the rigid platform according to the first driving force, so that the rigid platform performs a vibration test on the target test piece according to the first driving force.

[0009] By adopting the above technical solution, after receiving the first vibration signal, the exciter can accurately convert the first vibration signal into the first driving force. This conversion ensures the accuracy of the vibration test. The exciter drives the rigid platform according to the first driving force. Since the rigid platform has a stable structure, it can ensure that the driving force is accurately and stably transmitted to the target test piece, which helps to reduce vibration distortion and improve the accuracy of the vibration test.

[0010] Optionally, after performing a vibration test on the target test piece based on the first driving force and using the support member to block the vibration force sent from the ground to the rigid platform, the method also includes: obtaining a second vibration signal, the second vibration signal being a signal obtained by the sensor performing vibration detection on the rigid platform; inputting the second vibration signal into a preset model for matching to obtain a target error value, the preset model being constructed by combining a proportional controller, an integral controller, a differential controller and a control method of a reference adaptive control strategy; determining a third vibration signal according to the target error value, and receiving the third vibration signal.

[0011] By adopting the above technical solution, the rigid platform is vibration-detected based on the sensor to obtain the second vibration signal. This step can capture the vibration state during the vibration test in real time and provide data support for subsequent analysis. The second vibration signal is input into the preset model for matching to obtain the target error value. The third vibration signal is determined according to the target error value, and the vibration signal during the vibration test is corrected. By adjusting the output of the exciter, the vibration test can be closer to the vibration state expected by the target simulation request.

[0012] Optionally, after determining a third vibration signal according to the target error value and receiving the third vibration signal, the method also includes: determining a second driving force according to the third vibration signal; performing a vibration test on the target test piece based on the second driving force, wherein the support member is used to block the vibration force sent from the ground to the rigid platform; if the target test piece is in a state of stopped vibration, obtaining a second test result, and sending the second test result to the target user.

[0013] By adopting the above technical solution, the second driving force is determined according to the third vibration signal, and the driving force during the vibration test is further optimized to ensure that the vibration test is closer to the vibration state expected by the target simulation request. During the vibration test, the support member is used to block the transmission between the ground and the rigid platform. It helps to achieve dynamic balance, reduce energy distortion during vibration, and improve the stability of vibration tests.

[0014] Optionally, if the target test piece is in a stopped vibration state, a first test result is obtained and sent to the target user, specifically including: obtaining vibration data at a preset time interval, the vibration data being data obtained by vibration frequency detection of the rigid platform; judging whether the vibration data is consistent with the preset vibration data; when the vibration data is consistent with the preset vibration data, confirming that the target test piece is in a stopped vibration state; obtaining acceleration information and displacement information of the target test piece on the rigid platform, and outputting the acceleration information and displacement information as the first test result.

[0015] By adopting the above technical solution, vibration data is acquired at preset time intervals, the vibration frequency of the rigid platform can be monitored in real time, and the acquired vibration data is compared with the preset vibration data. When the vibration data is consistent with the preset vibration data, it is confirmed that the target test piece is in a stopped vibration state. After confirming that the target test piece is in a stopped vibration state, the acceleration information and displacement information of the target test piece on the rigid platform are acquired, and the acceleration information and displacement information are output as the first test result, which helps the target user to quickly understand the result and performance of the vibration test.

[0016] Optionally, after determining whether the vibration data is consistent with the preset vibration data, the method further includes: when the vibration data is inconsistent with the preset vibration data, confirming that the target test piece is in a normal vibration state.

[0017] By adopting the above technical solution, the vibration data is compared with the preset vibration data, so that the vibration state of the target test piece can be dynamically monitored. Once it is found that the vibration data is inconsistent with the preset vibration data, it is immediately confirmed that the target test piece is in a normal vibration state. This feedback mechanism helps to promptly discover and deal with abnormal situations in vibration tests.

[0018] Optionally, the support member includes a three-way negative stiffness support member and a positive stiffness support member.

[0019] By adopting the above technical solution, the combination of three-way negative stiffness support members and positive stiffness support members can be adjusted according to different vibration test requirements, and can also reduce vibration transmission and interference, thereby improving the accuracy of vibration test data.

[0020] In a second aspect of the present application, a vibration performance test device is provided, which is an excitation device, the excitation device includes an exciter and a rigid platform, the exciter is connected to the rigid platform, the rigid platform is fixedly connected to the ground through a support, and the target test piece is placed on the rigid platform. The excitation device includes a receiving unit, a processing unit and a sending unit; the receiving unit receives a first vibration signal, the first vibration signal is generated according to a target simulation request sent by a target user, the target simulation request is a request for the target test piece to perform vibration simulation in a vibration environment; the processing unit determines a first driving force according to the first vibration signal; based on the first driving force, a vibration test is performed on the target test piece, and the support is used to block the vibration force sent from the ground to the rigid platform; the sending unit obtains a first test result if the target test piece is in a stopped vibration state, and sends the first test result to the target user.

[0021] In a third aspect of the present application, an electronic device is provided, which includes a processor, a memory, a user interface and a network interface, the memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory, so that an electronic device executes any one of the methods described above in the present application.

[0022] In a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are executed, any one of the above methods of the present application is executed.

[0023] In summary, one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. Receive the first vibration signal generated by the target simulation request sent by the target user, determine the first driving force based on the first vibration signal, and perform a vibration test on the target test piece based on the first driving force. During the vibration test, the support member blocks the vibration force sent from the underground to the rigid platform, so that the first driving force will not be transmitted to the ground, and the vibration force of the ground will not be transmitted to the rigid platform, which helps to achieve dynamic balance, reduce the energy loss of the rigid platform during the vibration process, and ensure that the first vibration signal can be accurately transmitted to the target test piece. When it is determined that the target test piece is in a stopped vibration state, obtain the first test result, and send the first test result to the target user, so that the user can understand the test situation in time, effectively solving the problem that the electric exciter is susceptible to the requirements of its internal structure on other characteristics, resulting in poor low-frequency response. The excitation device can more accurately simulate the low-frequency characteristics of the target test piece in a real vibration environment, and improve the accuracy and reliability of the vibration test.

[0024] 2. After receiving the first vibration signal, the exciter can accurately convert the first vibration signal into a first driving force. This conversion ensures the accuracy of the vibration test. The exciter drives the rigid platform according to the first driving force. Since the rigid platform has a stable structure, it can ensure that the driving force is accurately and stably transmitted to the target test piece, which helps to reduce vibration distortion and improve the accuracy of the vibration test. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first structural schematic diagram of a vibration performance test method provided in an embodiment of the present application; Figure 2 It is a flow chart of a vibration performance test method provided in an embodiment of the present application; Figure 3 is a second structural schematic diagram of a vibration performance test method provided in an embodiment of the present application; Figure 4 is a third structural schematic diagram of a vibration performance test method provided in an embodiment of the present application; Figure 5 It is a structural schematic diagram of a vibration performance test device provided in an embodiment of the present application; Figure 6 It is a structural schematic diagram of an electronic device disclosed in an embodiment of the present application.

[0026] Explanation of the reference numerals: 101, input module; 102, excitation device; 103, support member; 104, target test piece; 105, ground; 106, output module; 107, exciter; 108, rigid platform; 301, signal generator; 302, power amplifier; 303, three-way negative stiffness support member; 304, positive stiffness support member; 305, acceleration sensor; 306, displacement sensor; 401, preset model; 402, monitoring sensor; 501, receiving unit; 502, processing unit; 503, sending unit; 600, electronic device; 601, processor; 602, communication bus; 603, user interface; 604, network interface; 605, memory. DETAILED DESCRIPTION

[0027] In order to enable technicians in this field to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0028] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0029] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0030] Currently, products are exposed to a variety of vibration environments during transportation, installation and actual application. Vibration simulation experiments, as an effective evaluation method, can simulate these real vibration conditions and then comprehensively consider the performance and reliability of the products.

[0031] Due to the prevalence of low-frequency vibration in many application scenarios, it is particularly important to implement low-frequency vibration simulation on products. Low-frequency vibration simulation can more accurately simulate the working conditions of products in actual operating environments, thereby revealing problems that are difficult to detect under conventional test conditions, such as looseness of mechanical components and functional failure of electronic components. These problems may be hidden in conventional test environments, but may be fully revealed under low-frequency vibration conditions. However, the current implementation of low-frequency simulation mainly relies on the application of electric exciters, but electric exciters are easily limited by the requirements of their internal structures for other characteristics, resulting in poor frequency response of electric vibration tables in the low-frequency band, and unable to achieve effective simulation of the low-frequency characteristics of the entire vibration table.

[0032] Therefore, how to solve the problem that the electric vibrator causes the vibration table to have poor frequency response in the low frequency band and cannot effectively simulate the low frequency characteristics. A vibration performance test method provided in an embodiment of the present application is applied to a vibration excitation device 102. The vibration excitation device 102 includes a vibrator 107 and a rigid platform 108. The vibrator 107 is connected to the rigid platform 108. The rigid platform 108 is fixedly connected to the ground 105 through a support 103. The target to-be-tested object 104 is placed on the rigid platform 108. Figure 1 As shown, the input module 101 sends a vibration signal to the vibration exciter 102, and the vibration exciter 107 receives the vibration signal. The vibration exciter 107 drives the rigid platform 108 according to the vibration signal so that the rigid platform 108 vibrates. The rigid platform 108 is fixedly connected to the ground 105 through the support member 103. The support member 103 is used to block the vibration force transmitted from the rigid platform 108 to the ground 105, and the vibration force on the ground 105 will not be transmitted to the rigid platform 108. After the vibration test is completed, the test result of the target test piece 104 on the rigid platform 108 is output through the output module 106.

[0033] Figure 2 is a flow chart of a vibration performance test method provided in an embodiment of the present application, with reference to Figure 2 The method includes the following steps S201-S204.

[0034] S201: receiving a first vibration signal, where the first vibration signal is generated according to a target simulation request sent by a target user, where the target simulation request is a request for the target device under test 104 to perform vibration simulation in a vibration environment.

[0035] In the above S201, first, ensure that the vibration device 102 (including the vibration exciter 107 and the rigid platform 108) has been correctly installed, and the rigid platform 108 is fixedly connected to the ground 105 through the support 103, and the target test piece 104 is placed on the rigid platform 108. The vibration device 102 will receive a target simulation request sent by a target user, who may be a test engineer. This target simulation request contains the environmental vibration requirements to be simulated, and determines the vibration signal according to the vibration requirements. Figure 3 As shown, after the vibration signal is determined, the vibration signal is passed through the signal generator 301 and the power amplifier 302 to obtain a first vibration signal, and the first vibration signal is sent to the exciter 107, and the exciter 107 receives the first vibration signal.

[0036] S202: Determine a first driving force according to the first vibration signal.

[0037] In the above S202, after determining the first vibration signal, the first vibration signal is analyzed to extract key information about the vibration characteristics, such as amplitude, frequency, etc. Based on the analyzed vibration characteristics and the physical properties (such as mass, stiffness, etc.) of the exciter 107, the first driving force required to achieve the desired vibration effect is calculated. The first driving force is the direct power source for the exciter 107 to generate vibration.

[0038] S203 : performing a vibration test on the target test piece 104 based on the first driving force, wherein the support member 103 is used to block the vibration force transmitted from the ground 105 to the rigid platform 108 .

[0039] In the above S203, the vibration test of the target test piece 104 is performed based on the first driving force, specifically including: the vibrator 107 receives the first vibration signal and generates the first driving force according to the first vibration signal; the vibrator 107 drives the rigid platform 108 according to the first driving force, so that the rigid platform 108 performs the vibration test on the target test piece 104 according to the first driving force. Specifically, after the vibrator 107 receives the first vibration signal, it processes the first vibration signal, and this processing is to convert the digital signal into an instruction or parameter that the vibrator 107 can understand. The magnitude and direction of the first driving force to be generated are calculated according to the first vibration signal. There is a power generating device inside the vibrator 107, such as a motor, an electromagnet, etc. This device will generate a corresponding mechanical force or electromagnetic force according to the magnitude and direction of the calculated first driving force. In the electromagnetic vibrator 107, this force is usually generated by changing the current in the electromagnet coil. In the inertial vibrator 107, this force is generated by the rotation of an eccentric block or an unbalanced mass. The generated first driving force will be transmitted to the rigid platform 108 through the output end of the exciter 107 (which may be a shaft, a rod, a transmission belt, etc.). This transmission process needs to ensure that the direction and magnitude of the force are consistent with the calculated first driving force. After receiving the first driving force, the rigid platform 108 will begin to vibrate according to a predetermined vibration mode. This vibration mode is usually determined by the parameters in the first vibration signal, such as vibration frequency, amplitude, etc. Before the vibration test begins, it is necessary to ensure that the target test piece 104 has been correctly placed on the rigid platform 108 and that the contact surface with the platform is flat and tight. The vibration of the rigid platform 108 will be transmitted to the target test piece 104 through the contact surface, causing it to also generate corresponding vibrations. Since the vibration of the exciter 107 is transmitted to the target test piece 104 through the rigid platform 108, causing it to also generate corresponding vibrations, the target test piece 104 is placed on the rigid platform.

[0040] In addition, during the vibration process, in order to reduce the vibration force sent by the exciter 107 to the rigid platform 108 from being transmitted to the ground 105, and the vibration force on the ground 105 is transmitted to the rigid platform 108, the support member 103 is used to fix the rigid platform 108 and the ground 105, and the support member 103 includes a three-way negative stiffness support member 303 and a positive stiffness support member 304. The support member 103 is installed between the rigid platform 108 and the ground 105 to ensure that the support member 103 can firmly support the rigid platform 108, and then the position and angle of the support member 103 are adjusted to meet the test requirements. The three-way negative stiffness support refers to a support structure that exhibits negative stiffness characteristics in three directions. When this support structure is subjected to external force, it will produce deformation in the same direction as the external force in three directions. Since the three-way negative stiffness support exhibits negative stiffness in three directions, in order to ensure that the support member 103 does not become unstable, a positive stiffness support member 304 is also required. Positive stiffness support refers to the property that when a material or structure is subjected to an external force, its deformation is proportional to the magnitude of the external force, and the deformation direction is opposite to the external force. This property enables the material or structure to resist the deformation effect of the external force and maintain its original shape and stability. The positive stiffness support member 304 can be understood as exhibiting positive stiffness in three directions, that is, the deformation is proportional to the magnitude of the external force, and the deformation direction is opposite to the external force. The target test piece 104 is placed on a rigid platform 108. At this time, the support member 103 is used to block the vibration force sent by the ground 105 to the rigid platform 108, and also prevents the vibration force sent by the exciter 107 to the rigid platform 108 from being transmitted to the ground. In other words, the support member 103 in this application plays a blocking role, firstly, it is used to block the vibration force sent by the vibration exciter 107 to the rigid platform 108 from being transmitted to the ground, and secondly, it is used to block the vibration force on the ground 105 from being transmitted to the rigid platform 108. The target test piece 104 on the rigid platform 108 will not be affected by other vibrations, thereby improving the accuracy of the vibration test.

[0041] S204: If the target test piece 104 is in a stopped vibration state, a first test result is obtained and the first test result is sent to a target user.

[0042] In the above S204, when the target test piece 104 is in vibration, the vibration state of the target test piece 104 is continuously detected. This is achieved by detecting whether the amplitude, frequency and other parameters of the vibration signal reach a preset stop condition.

[0043] At this time, the vibration state of the target test piece 104 is judged, and the corresponding test result is output according to the judgment result, which specifically includes: obtaining vibration data at a preset time interval, and the vibration data is the data obtained by detecting the vibration frequency of the rigid platform 108; judging whether the vibration data is consistent with the preset vibration data; when the vibration data is consistent with the preset vibration data, it is confirmed that the target test piece 104 is in a stopped vibration state; obtaining the acceleration information and displacement information of the target test piece 104 on the rigid platform 108, and outputting the acceleration information and displacement information as the first test result. Specifically, before the vibration test starts, a preset time interval can be set. This time interval is used to determine when to collect vibration data to ensure the accuracy and continuity of the data. The selection of the preset time interval should be determined according to the specific requirements of the test and the characteristics of the target test piece 104. During the vibration test, the vibration frequency of the rigid platform 108 is detected at a preset time interval. This is usually achieved by a sensor installed on the rigid platform 108, and the sensor will collect vibration data in real time and send it to the excitation device 102 for processing. The collected vibration data is obtained, and the vibration data includes information such as vibration frequency and amplitude. The vibration data is compared with the preset vibration data, which is determined according to the test requirements and the characteristics of the target test piece 104, and is used to determine whether the vibration test reaches the expected stop vibration state. When the collected vibration data is consistent with the preset vibration data, it is determined that the target test piece 104 is in a stop vibration state, and the stop vibration state indicates the state of the end of the vibration test. After confirming that the target test piece 104 is in a stop vibration state, the acceleration sensor 305 and the displacement sensor 306 installed on the rigid platform 108 or the target test piece 104 are started. These sensors will collect the acceleration information and displacement information of the target test piece 104 in real time. The collected acceleration information and displacement information will be processed. The processing process includes steps such as data filtering, denoising, and calibration to ensure the accuracy and reliability of the data. The processed acceleration information and displacement information will be integrated into the first test result. This result may be a detailed report containing all the data, analysis results, and any possible suggestions or conclusions during the test. The first test result will be output to the target user. This output process can be achieved through screen display, printing reports, sending emails, etc., depending on the needs of the target users.

[0044] Further, when the vibration data is inconsistent with the preset vibration data, it is confirmed that the target test piece 104 is in a normal vibration state. Specifically, when the vibration data is inconsistent with the preset vibration data, it is confirmed that the target test piece 104 is in a normal vibration state, and the normal vibration state indicates that the vibration test is still vibrating as expected and has not yet reached the stop vibration state. After confirming that the target test piece 104 is in a normal vibration state, the vibration data will continue to be monitored. This includes continuously collecting vibration data, comparing it with the preset vibration data, and updating the vibration state in real time.

[0045] In a possible implementation, in order to simulate the natural waves detected in the actual field or the vibration monitored in the electronic industry production room, it is necessary to install a monitoring sensor on the rigid platform 108, monitor the vibration signal on the rigid platform 108 during the vibration process, adjust the vibration signal, and then send the adjusted vibration signal to the exciter 107, so that the exciter 107 generates a new driving force for the rigid platform 108 according to the adjusted vibration signal, and then test the vibration performance of the target to-be-tested object 104 under different vibration environments. Specifically, it includes: obtaining a second vibration signal, which is a signal obtained by the sensor for vibration detection of the rigid platform 108; inputting the second vibration signal into the preset model 401 for matching, and obtaining a target error value, and the preset model 401 is constructed by combining a proportional controller, an integral controller, a differential controller and a control method of a reference adaptive control strategy; determining a third vibration signal according to the target error value, and receiving the third vibration signal. Specifically, sensors are deployed on or near the rigid platform 108, which can be acceleration sensors, displacement sensors or velocity sensors, etc., and can be uniformly defined as monitoring sensors 402, which are used to detect the vibration state of the rigid platform 108 in real time. The sensor collects the vibration data of the rigid platform 108 in real time and converts it into an electrical signal or a digital signal. These signals contain detailed information about the vibration of the rigid platform 108, such as amplitude, frequency, phase, etc. The collected signal may need to be preprocessed, such as filtering, amplification or digitization, for subsequent analysis and processing. The processed signal is the second vibration signal. The second vibration signal is input into a preset model for matching. The preset model is a control method that combines a proportional controller (P controller), an integral controller (I controller), a differential controller (D controller) and a reference adaptive control strategy. This model can calculate the error based on the input vibration signal and the preset control target, and output an adjustment signal to reduce the error. The proportional controller adjusts the output signal according to the size of the error. The larger the error, the larger the output signal. The integral controller integrates the error to eliminate the error that exists for a long time. The differential controller predicts the trend of the error change and adjusts the output signal according to this trend to eliminate the error in advance. The reference adaptive control strategy adjusts the control parameters according to the difference between the actual response of the system and the preset reference model to improve the stability and response speed of the system. The second vibration signal is input into the preset model, which calculates the error based on the input signal and the control target. This error reflects the difference between the actual vibration state and the desired vibration state. The preset model outputs a target error value, which indicates the degree of deviation between the current vibration state and the desired state. This value will be used for subsequent control and adjustment. Based on the target error value, the preset model adjusts its control parameters (such as the gain coefficients of the P, I, and D controllers) to reduce the error and optimize the vibration state.The adjusted model will output a third vibration signal, which contains a control instruction for adjusting the output of the exciter 107. This instruction is intended to reduce the error and make the vibration state of the rigid platform 108 closer to the desired state. The exciter 107 will receive the third vibration signal and adjust its output according to the control instruction in the signal. In this way, the exciter 107 can be dynamically adjusted according to the vibration state of real-time feedback to achieve more precise control. For example. Figure 4 shown.

[0046] In addition, the second driving force is determined according to the third vibration signal; based on the second driving force, a vibration test is performed on the target test piece 104, and the support member 103 is used to block the vibration force sent from the ground 105 to the rigid platform 108; if the target test piece 104 is in a stopped vibration state, the second test result is obtained and sent to the target user. Specifically, after receiving the third vibration signal, the exciter 107 analyzes the third vibration signal. Based on the analyzed parameters and the physical properties of the exciter 107 (such as mass, stiffness, damping, etc.), the second driving force required to reach the new vibration state is calculated. This driving force is the direct power source for the exciter 107 to generate a new vibration mode. The calculated second driving force is compared with the output of the current exciter 107, and the control signal of the exciter 107 is adjusted accordingly to ensure that the exciter 107 can vibrate according to the desired vibration mode. The adjusted exciter 107 drives the rigid platform 108 according to the second driving force. This driving force will be transmitted to the target test piece 104 through the rigid platform 108, causing it to generate corresponding vibration. During the vibration process, the vibration state of the target test piece 104 will be continuously monitored. This is usually achieved by sensors installed on the rigid platform 108 or the target test piece 104. At the same time, the support 103 is used to block the vibration force sent by the ground 105 to the rigid platform 108, and the support 103 is the key to the stability of the rigid platform 108. Continue to detect the vibration state of the target test piece 104 until it reaches a state of stopping vibration. Once it is detected that the target test piece 104 stops vibrating and the exciter 107 also stops vibrating, all data during the entire vibration test process need to be collected. These data include vibration time, amplitude, frequency response, etc., as well as any possible abnormality or fault information. The collected data is analyzed and processed to generate a second test result. This result may be a detailed report containing all the data, analysis results, and any possible suggestions or conclusions during the test. Finally, the control system will send this result to the target user for reference and decision-making.

[0047] The present application also provides a vibration performance test device. Figure 5 is a schematic diagram of a vibration performance test device provided in an embodiment of the present application, with reference to Figure 5The device is a vibration device 102, which includes a vibration exciter 107 and a rigid platform 108. The vibration exciter 107 is connected to the rigid platform 108, and the rigid platform 108 is fixedly connected to the ground 105 through a support 103. The target test piece 104 is placed on the rigid platform 108. The vibration device 102 includes a receiving unit 501, a processing unit 502 and a sending unit 503.

[0048] The receiving unit 501 receives a first vibration signal, where the first vibration signal is generated according to a target simulation request sent by a target user, where the target simulation request is a request for the target device under test 104 to perform vibration simulation in a vibration environment.

[0049] The processing unit 502 determines a first driving force according to the first vibration signal; performs a vibration test on the target test piece 104 based on the first driving force, and the support member 103 is used to block the vibration force sent from the ground 105 to the rigid platform 108 .

[0050] The sending unit 503 obtains a first test result if the target test piece 104 is in a stopped vibration state, and sends the first test result to a target user.

[0051] In a possible implementation, the receiving unit 501 is used for the exciter 107 to receive the first vibration signal and generate a first driving force according to the first vibration signal; the exciter 107 drives the rigid platform 108 according to the first driving force, so that the rigid platform 108 performs a vibration test on the target test piece 104 according to the first driving force.

[0052] In one possible implementation, the receiving unit 501 is used to obtain a second vibration signal, which is a signal obtained by the sensor performing vibration detection on the rigid platform 108; the processing unit 502 is used to input the second vibration signal into the preset model 401 for matching to obtain a target error value, and the preset model 401 is constructed by combining a proportional controller, an integral controller, a differential controller and a control method of a reference adaptive control strategy; the receiving unit 501 is used to determine a third vibration signal according to the target error value and receive the third vibration signal.

[0053] In one possible implementation, the processing unit 502 is used to determine a second driving force based on a third vibration signal; a vibration test is performed on the target test piece 104 based on the second driving force, and the support member 103 is used to block the vibration force sent from the ground 105 to the rigid platform 108; the sending unit 503 is used to obtain a second test result if the target test piece 104 is in a stopped vibration state, and send the second test result to the target user.

[0054] In a possible implementation, the receiving unit 501 is used to obtain vibration data at preset time intervals, where the vibration data is data obtained by detecting the vibration frequency of the rigid platform 108; the processing unit 502 is used to determine whether the vibration data is consistent with the preset vibration data; when the vibration data is consistent with the preset vibration data, it is confirmed that the target test piece 104 is in a stopped vibration state; the receiving unit 501 is used to obtain acceleration information and displacement information of the target test piece 104 on the rigid platform 108, and output the acceleration information and displacement information as the first test result.

[0055] In a possible implementation manner, the processing unit 502 is configured to confirm that the target test piece 104 is in a normal vibration state when the vibration data is inconsistent with the preset vibration data.

[0056] It should be noted that: when the device provided in the above embodiment realizes its function, only the division of the above functional modules is used as an example. In actual application, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0057] The present application also discloses an electronic device. Figure 6 , Figure 6 The electronic device 600 may include: at least one processor 601 , at least one network interface 604 , a user interface 603 , a memory 605 , and at least one communication bus 602 .

[0058] The communication bus 602 is used to realize the connection and communication between these components.

[0059] The user interface 603 may include a display screen (Display) and a camera (Camera). The optional user interface 603 may also include a standard wired interface and a wireless interface.

[0060] The network interface 604 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0061] Among them, the processor 601 may include one or more processing cores. The processor 601 uses various interfaces and lines to connect various parts in the entire server, and executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 605, and calling data stored in the memory 605. Optionally, the processor 601 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 601 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application requests; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 601, and it can be implemented separately through a chip.

[0062] Among them, the memory 605 may include a random access memory (RAM) or a read-only memory (Read-Only Memory). Optionally, the memory 605 includes a non-transitory computer-readable storage medium. The memory 605 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 605 may include a program storage area and a data storage area, wherein the program storage area. Instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc. can be stored; the data storage area can store data involved in the above-mentioned various method embodiments, etc. The memory 605 can also be optionally at least one storage device located away from the aforementioned processor 601.

[0063] like Figure 6 As shown, the memory 605 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an application program for testing vibration performance.

[0064] exist Figure 6In the electronic device 600 shown, the user interface 603 is mainly used to provide an input interface for the user and obtain data input by the user; and the processor 601 can be used to call the application program for the vibration performance test stored in the memory 605. When executed by one or more processors, the electronic device executes one or more of the methods described in the above embodiments.

[0065] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present application.

[0066] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0067] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0068] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0070] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: various media that can store program codes, such as USB flash drives, mobile hard drives, magnetic disks or optical disks.

[0071] The above is only an exemplary embodiment of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and the truth of practice, it will be easy for those skilled in the art to think of other embodiments of the present disclosure. This application is intended to cover any variation, use or adaptive change of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field that are not recorded in the present disclosure.

Claims

1. A vibration performance test method, characterized in that: Applied to a vibration excitation device (102), the vibration excitation device (102) comprising a vibration exciter (107) and a rigid platform (108), the vibration exciter (107) being connected to the rigid platform (108), the rigid platform (108) being fixedly connected to the ground (105) via a support (103), and a target to-be-tested object (104) being placed on the rigid platform (108), the method comprising: receiving a first vibration signal, the first vibration signal being generated according to a target simulation request sent by a target user, the target simulation request being a request for the target test piece (104) to perform vibration simulation in a vibration environment; determining a first driving force according to the first vibration signal; A vibration test is performed on the target test piece (104) based on the first driving force, wherein the support member (103) is used to block the vibration force transmitted from the ground (105) to the rigid platform (108); If the target test piece (104) is in a vibration-stopping state, obtaining a first test result, and sending the first test result to the target user; The performing a vibration test on the target test piece (104) based on the first driving force specifically comprises: The vibration exciter (107) receives the first vibration signal and generates the first driving force according to the first vibration signal; The vibration exciter (107) drives the rigid platform (108) according to the first driving force, so that the rigid platform (108) performs a vibration test on the target test piece (104) according to the first driving force; After the vibration test is performed on the target test piece (104) based on the first driving force, and the support member (103) is used to block the vibration force sent by the ground (105) to the rigid platform (108), the method further comprises: Acquiring a second vibration signal, the second vibration signal being a signal obtained by a sensor performing vibration detection on the rigid platform (108); The second vibration signal is input into a preset model (401) for matching to obtain a target error value, wherein the preset model (401) is constructed by combining a proportional controller, an integral controller, a differential controller and a control method of a reference adaptive control strategy; A third vibration signal is determined according to the target error value, and the third vibration signal is received.

2. The method according to claim 1, characterized in that: After determining a third vibration signal according to the target error value and receiving the third vibration signal, the method further includes: determining a second driving force according to the third vibration signal; A vibration test is performed on the target test piece (104) based on the second driving force, wherein the support member (103) is used to block the vibration force transmitted from the ground (105) to the rigid platform (108); If the target test piece (104) is in the vibration-stopping state, a second test result is obtained, and the second test result is sent to the target user.

3. The method according to claim 1, characterized in that If the target test piece (104) is in a state of stopping vibration, obtaining a first test result, and sending the first test result to the target user, specifically comprises: Acquiring vibration data at preset time intervals, the vibration data being data obtained by detecting the vibration frequency of the rigid platform (108); Determining whether the vibration data is consistent with preset vibration data; When the vibration data is consistent with the preset vibration data, it is confirmed that the target test piece (104) is in the vibration stop state; Acceleration information and displacement information of the target test piece (104) on the rigid platform (108) are obtained, and the acceleration information and the displacement information are output as the first test result.

4. The method according to claim 3, characterized in that After determining whether the vibration data is consistent with the preset vibration data, the method further includes: When the vibration data is inconsistent with the preset vibration data, it is confirmed that the target test piece (104) is in a normal vibration state.

5. The method according to claim 1, characterized in that The support member (103) comprises a three-way negative stiffness support member (303) and a positive stiffness support member (304).

6. A vibration performance test device, characterized in that: The device is a vibration excitation device (102), the vibration excitation device (102) comprising a vibration exciter (107) and a rigid platform (108), the vibration exciter (107) being connected to the rigid platform (108), the rigid platform (108) being fixedly connected to the ground (105) via a support member (103), a target to-be-tested object (104) being placed on the rigid platform (108), and the vibration excitation device (102) comprising a receiving unit (501), a processing unit (502), and a sending unit (503); The receiving unit (501) receives a first vibration signal, wherein the first vibration signal is generated according to a target simulation request sent by a target user, wherein the target simulation request is a request for the target test piece to perform vibration simulation in a vibration environment; The processing unit (502) determines a first driving force according to the first vibration signal; performs a vibration test on the target test piece based on the first driving force, wherein the support member is used to block the vibration force transmitted from the ground (105) to the rigid platform (108); The sending unit (503) acquires a first test result if the target test piece is in a vibration-stopping state, and sends the first test result to the target user.

7. An electronic device, characterized in that: The electronic device (600) comprises a processor (601), a memory (605), a user interface (603) and a network interface (604), wherein the memory (605) is used to store instructions, the user interface (603) and the network interface (604) are used to communicate with other devices, and the processor (601) is used to execute the instructions stored in the memory (605) so that the electronic device (600) executes the method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed, the method according to any one of claims 1 to 5 is performed.

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