Micro-vibration platform damping control method and system
By establishing a mapping relationship and dynamically adjusting the vibration damping platform parameters, the problems of accuracy and dynamism in vibration control of precision equipment in the factory were solved, and the automated control and stability improvement of the vibration damping platform were realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 江苏鸾翔机电工程有限公司
- Filing Date
- 2025-08-13
- Publication Date
- 2026-04-21
AI Technical Summary
Existing technologies lack precise control over the vibration impact of precision equipment in factories, and cannot continuously adjust according to different environmental conditions, resulting in insufficient dynamism and timeliness of control.
By establishing a mapping relationship between load parameters, environmental vibration frequency, and test parameters, the parameters of the vibration damping platform, including the stiffness of the damping pad, the fluctuation height of the air flotation platform, and the power amplifier factor, are dynamically adjusted to achieve automated control of the vibration damping platform.
It improves the stability and reliability of vibration reduction, adapts to different factory environments and load conditions, reduces human interference, improves system stability and testing efficiency, and ensures good vibration reduction performance under various conditions.
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Figure CN120742993B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of intelligent control technology, and in particular to a vibration reduction control method and system for a micro-vibration platform. Background Technology
[0002] In recent years, passive vibration damping technology has absorbed and dissipated vibration energy through the properties of materials or structures without the need for external energy or control signals. Active vibration damping technology detects vibration signals through sensors and uses controllers and actuators to control the vibration in real time. Airbag-type vibration dampers use the elasticity of inflated rubber airbags to isolate and mitigate vibrations, providing a soft and precise damping effect. They are suitable for applications requiring high precision and low vibration environments. By optimizing the platform structure, piezoelectric array layout, and control algorithms, they can achieve rapid response and precise control of minute vibrations.
[0003] Currently, Chinese invention patent CN106274929B discloses a vacuum-based real-time leak detection method for high-speed rail tank cars with a damping vibration reduction platform. This method connects the tank car to a sinusoidal damping vibration reduction platform, which contains a vacuum pump and a control box. The vacuum pump evacuates the tank body of the high-speed rail tank car, and the control box controls the operation of the vacuum pump and sends the evacuation and vacuum data to the control station for parameter monitoring via electronic signals. Based on the vacuum and evacuation data, it determines whether there is a leak in the tank body. However, the related technology does not compensate for the vibration impact of the surrounding environment on the precision equipment in the factory, lacks the precision of control, does not continuously adjust the vibration reduction control according to different environmental conditions, and lacks the dynamism and timeliness of control, thus having certain limitations. Summary of the Invention
[0004] The technical problem solved by this invention is that related technologies do not compensate for the vibration impact of the surrounding environment on precision equipment in the factory, lack the precision of control, do not continuously adjust the vibration reduction control according to different environmental conditions, lack the dynamism and timeliness of control, and have certain limitations.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: Firstly, a vibration reduction and control method for a micro-vibration platform, comprising the following steps:
[0006] Step S100: Set the vibration frequency calculated at any point in the factory as the environmental vibration frequency, test the load with the first test parameters, and obtain the test results.
[0007] Step S200: Adjust the first test parameter according to the test result to obtain the second test parameter, and obtain the second load vibration frequency corresponding to the second test parameter, and obtain the standard range of the second test parameter according to the second load vibration frequency;
[0008] Step S300: Establish a first mapping relationship between the load parameters, the environmental vibration frequency and the standard range of the second test parameters, and control the vibration damping platform according to the first mapping relationship.
[0009] As a preferred embodiment of the vibration reduction and control method for a micro-vibration platform described in this invention, a spatial coordinate system is established with any corner point of the space where the factory is located as the origin, and the three adjacent sides of the origin as the x-axis, y-axis and z-axis. The coordinates of any point in the factory are obtained in the coordinate system, and the coordinates of the geometric center of the first length of railway track are set as the coordinates of the vibration source in the coordinate system.
[0010] As a preferred embodiment of the vibration reduction and control method for a micro-vibration platform described in this invention, the following steps are taken: a vibration frequency model is established, and the environmental vibration frequency at any point within the factory building is calculated using the vibration frequency model. The calculation expression for the vibration frequency model is as follows:
[0011] ;
[0012] in, Let f0 be the environmental vibration frequency at any point within the factory building, d be the straight-line distance between any point within the factory building and the geometric center of the vibration source (represented by a high-speed train), and the straight-line distance be a three-dimensional straight-line distance. Let f0 be the vibration frequency at the vibration source, and d0 be a constant, representing a reference distance. It is a constant, and It is represented as an index related to frequency attenuation characteristics.
[0013] As a preferred embodiment of the vibration reduction control method for a micro-vibration platform according to the present invention, the first test parameter represents the relevant parameters of the vibration reduction platform;
[0014] The first test parameters include the stiffness of the damping pad, the fluctuation height of the air-floating platform, and the power amplifier factor;
[0015] The test result is expressed as the first load vibration frequency;
[0016] The materials used for shock-absorbing pads include natural rubber, synthetic rubber, polyurethane foam, polyethylene foam, polyurethane, EVA, ACF artificial cartilage material, metal, modified polypropylene, and rubber particle composite materials. Different materials correspond to different stiffness ranges for shock-absorbing pads.
[0017] In a preferred embodiment of the vibration reduction and control method for a micro-vibration platform according to the present invention, the method for setting the second test parameter includes:
[0018] Set the first value as the vibration frequency threshold, compare the first load vibration frequency with the first value, and when the first load vibration frequency is greater than or equal to the first value, change the first test parameter until the first load vibration frequency is less than the first value, then stop changing the parameter and set the changed first test parameter as the second test parameter.
[0019] When the first load vibration frequency is less than the first value, the first test parameter is not changed, and the original first test parameter is updated to the second test parameter.
[0020] As a preferred embodiment of the vibration reduction control method for a micro-vibration platform described in this invention, wherein: when the first test parameter is the stiffness of the vibration damping pad, the current vibration damping pad material is obtained, and vibration damping pads of the same material with different stiffness values are continuously selected in the stiffness range of the current vibration damping pad material. The selected vibration damping pads are retested to obtain the corresponding first load vibration frequency. The change is stopped when the first load vibration frequency is less than the first value, and the vibration damping pads of the same material with the stiffness value are updated to the second test parameter.
[0021] When all damping pads of the same material with the same stiffness value are traversed and the corresponding first load vibration frequency is greater than or equal to the first value, switch to other damping pad materials and repeat the above method of changing damping pads of the same material until the first load vibration frequency is less than the first value, stop changing, and update the damping pads of different materials with different stiffness values to the second test parameter.
[0022] When all different materials of damping pads with stiffness values are traversed and the corresponding first load vibration frequency is greater than or equal to the first value, other first test parameters are changed.
[0023] The order of changing the first test parameter is: damping pad stiffness, air flotation platform fluctuation height, and power amplifier multiplier. Only one first test parameter is changed at a time.
[0024] In a preferred embodiment of the vibration reduction control method for a micro-vibration platform according to the present invention, when the first test parameter is the fluctuation height of the air-float platform or the power amplifier multiple, the fluctuation height of the air-float platform or the power amplifier multiple is continuously increased or continuously decreased, while the corresponding first load vibration frequency is continuously acquired. When the first load vibration frequency is less than the first value, the change is stopped, and the fluctuation height of the air-float platform or the power amplifier multiple is updated to the second test parameter.
[0025] As a preferred embodiment of the vibration reduction control method for a micro-vibration platform described in this invention, the method is as follows: after the second test parameter is obtained for the first time, the first test parameter is continuously modified until the first load vibration frequency is greater than or equal to the first value. Then, the adjustment is stopped, and the first test parameter at this time is set as the third test parameter. The standard range of the second test parameter is constructed by taking the second test parameter and the third test parameter as limits, the smaller limit as the lower limit, and the larger limit as the upper limit.
[0026] Methods for continued modification include:
[0027] When the second test parameter is set when testing the stiffness of the damping pad, the stiffness of the damping pad is changed continuously, and the first load vibration frequency is continuously obtained. When the first load vibration frequency is greater than or equal to the first value, the range of change of the damping pad is set as the standard range of the damping pad. After the standard range of the damping pad is set, the second value and the third value are set as allowable thresholds. The sum and difference of the air flotation platform fluctuation height and power amplifier multiple in the first test parameter and the corresponding allowable threshold are calculated respectively. The sum is used as the upper limit and the difference is used as the lower limit to construct the standard range of the air flotation platform fluctuation height and the standard range of the power amplifier multiple respectively.
[0028] The logic for further changing the remaining second test parameters is the same as the logic for further changing the damping pad stiffness.
[0029] As a preferred embodiment of the vibration reduction and control method for a micro-vibration platform according to the present invention, the load parameters include load weight and load volume;
[0030] Establish a first mapping relationship between load parameters, environmental vibration frequency and standard range of second test parameters. By inputting environmental vibration frequency and load parameters into the first mapping relationship, the corresponding second test parameters are obtained.
[0031] The control unit controls the setting parameters of the vibration damping platform based on the second test parameters.
[0032] Secondly, a vibration reduction and control method for a micro-vibration platform includes a calculation module, a testing module, and a control module;
[0033] The calculation module is used to set the vibration frequency calculated at any point in the factory as the environmental vibration frequency, test the load with the first test parameters, and obtain the test results.
[0034] The test module is used to adjust the first test parameter according to the test result to obtain the second test parameter, and obtain the second load vibration frequency corresponding to the second test parameter, and obtain the standard range of the second test parameter according to the second load vibration frequency;
[0035] The control module is used to establish a first mapping relationship between the load parameters, the environmental vibration frequency and the standard range of the second test parameters, and to control the vibration damping platform according to the first mapping relationship.
[0036] The beneficial effects of this invention are as follows: By dynamically adjusting the damping parameters through testing and feedback mechanisms, the vibration frequency of the load can be effectively reduced. This method automatically optimizes the damping parameters according to different loads and environmental conditions, thereby improving the damping effect. It can adapt to different factory environments and load conditions, ensuring good damping performance under various circumstances. By determining the standard range of the second test parameter, the stability and reliability of the damping parameters are ensured. This helps to avoid unstable damping performance caused by parameter fluctuations. After establishing the mapping relationship, the automated control of the damping platform is realized, reducing interference from human factors and further improving the stability and reliability of the system. Through step-by-step testing and adjustment, unnecessary testing steps are reduced, and testing efficiency is improved. Attached Figure Description
[0037] Figure 1 This is a schematic diagram of the basic process of a vibration reduction control method for a micro-vibration platform provided in one embodiment of the present invention. Detailed Implementation
[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0039] Example, refer to Figure 1 As an embodiment of the present invention, a vibration reduction and control method for a micro-vibration platform is provided, comprising the following steps:
[0040] Step S100: Set the vibration frequency calculated at any point in the factory as the environmental vibration frequency, test the load with the first test parameters, and obtain the test results.
[0041] Step S200: Adjust the first test parameter according to the test result to obtain the second test parameter, and obtain the second load vibration frequency corresponding to the second test parameter, and obtain the standard range of the second test parameter according to the second load vibration frequency;
[0042] Step S300: Establish a first mapping relationship between the load parameters, the environmental vibration frequency and the standard range of the second test parameters, and control the vibration damping platform according to the first mapping relationship.
[0043] This invention dynamically adjusts vibration damping parameters through a testing and feedback mechanism, effectively reducing the vibration frequency of the load. This method automatically optimizes the damping parameters based on different loads and environmental conditions, thereby improving the damping effect. It adapts to different factory environments and load conditions, ensuring good damping performance under various circumstances. By determining the standard range of the second test parameter, the stability and reliability of the damping parameters are ensured. This helps avoid unstable damping effects caused by parameter fluctuations. After establishing a mapping relationship, automated control of the damping platform is achieved, reducing interference from human factors and further improving the stability and reliability of the system. Through step-by-step testing and adjustment, unnecessary testing steps are reduced, improving testing efficiency.
[0044] A spatial coordinate system is established with any corner point of the space where the factory is located as the origin, and the three adjacent sides of the origin as the x-axis, y-axis and z-axis. The coordinates of any point in the factory are obtained in the coordinate system, and the coordinates of the geometric center of the first length of railway track are set as the coordinates of the vibration source.
[0045] A vibration frequency model is established, and the environmental vibration frequency at any point within the factory building is calculated using this model. The calculation expression for the vibration frequency model is as follows:
[0046] ;
[0047] in, Let f0 be the environmental vibration frequency at any point within the factory building, d be the straight-line distance between any point within the factory building and the geometric center of the vibration source (represented by a high-speed train), and the straight-line distance be a three-dimensional straight-line distance. Let f0 be the vibration frequency at the vibration source, and d0 be a constant, representing a reference distance. It is a constant, and It is represented as an index related to frequency attenuation characteristics.
[0048] In practical implementation, by establishing a spatial coordinate system and clearly defining the location of the vibration source, the accuracy of vibration analysis can be improved. This allows for spatial distribution analysis of vibration at any point within the factory building, facilitating a comprehensive understanding of the vibration propagation path and its impact range. Based on the location of the vibration source and the coordinates of various points within the factory building, targeted vibration reduction measures can be designed. For example, damping pads or dampers can be installed along the vibration propagation path. When adjusting equipment layout or structure within the factory building, the vibration reduction design can be quickly adjusted according to the coordinate system to ensure that the vibration reduction effect is not affected. The coordinate system enables systematic management of vibration within the factory building, facilitating data recording and analysis, reducing the workload of repetitive measurements and analyses, and allowing for rapid reference to the data in the coordinate system when adjustments to vibration reduction measures are needed, enabling scientific and reasonable decisions and improving engineering efficiency.
[0049] The first test parameter is represented by the relevant parameters of the vibration reduction platform;
[0050] The first test parameters include the stiffness of the shock-absorbing pad, the oscillation height of the air-float platform, and the power amplifier factor.
[0051] The test result is expressed as the first load vibration frequency;
[0052] The materials used for shock-absorbing pads include natural rubber, synthetic rubber, polyurethane foam, polyethylene foam, polyurethane, EVA, ACF artificial cartilage material, metal, modified polypropylene, and rubber particle composite materials. Different materials correspond to different stiffness ranges for shock-absorbing pads.
[0053] In practice, by precisely adjusting the stiffness of the damping pads, the fluctuation height of the air-floating platform, and the power amplifier multiplier, the vibration frequency of the load is effectively reduced, and the vibration reduction effect is improved. Damping pads of different materials have different stiffness ranges. Appropriate materials are selected according to specific needs to optimize the performance of the vibration reduction platform. By testing and adjusting the first test parameters, the platform can adapt to different loads and environmental conditions, ensuring that the vibration reduction platform can achieve optimal performance under various working conditions. The systematic testing and adjustment method reduces repetitive work, improves engineering efficiency, and quickly achieves the vibration reduction goal.
[0054] The methods for setting the second test parameter include:
[0055] Set the first value as the vibration frequency threshold, compare the first load vibration frequency with the first value, and when the first load vibration frequency is greater than or equal to the first value, change the first test parameter until the first load vibration frequency is less than the first value, then stop changing the parameter and set the changed first test parameter as the second test parameter.
[0056] When the first load vibration frequency is less than the first value, the first test parameter is not changed, and the original first test parameter is updated to the second test parameter.
[0057] In practice, by dynamically adjusting the parameters of the vibration damping platform, the load vibration frequency is ensured to always be below the set safety threshold, thereby protecting the equipment from damage caused by excessive vibration. By dynamically adjusting the test parameters, the optimal combination of vibration damping parameters is found, thereby improving the vibration damping effect. Through a systematic adjustment method, the workload of repeated testing and adjustment is reduced, and the engineering efficiency is improved. Through real-time monitoring and dynamic adjustment, potential vibration risks can be assessed and prevented in advance, avoiding equipment damage or structural destruction caused by excessive vibration.
[0058] When the first test parameter is the stiffness of the damping pad, obtain the current damping pad material, continuously select damping pads of the same material with different stiffness values in the damping pad stiffness range of the current damping pad material, and retest the selected damping pads to obtain the corresponding first load vibration frequency. Stop changing when the first load vibration frequency is less than the first value, and update the damping pads of the same material with the stiffness value to the second test parameter.
[0059] When all damping pads of the same material with the same stiffness value are traversed and the corresponding first load vibration frequency is greater than or equal to the first value, switch to other damping pad materials and repeat the above method of changing damping pads of the same material until the first load vibration frequency is less than the first value, stop changing, and update the damping pads of different materials with different stiffness values to the second test parameter.
[0060] When all different materials of damping pads with stiffness values are traversed and the corresponding first load vibration frequency is greater than or equal to the first value, other first test parameters are changed.
[0061] The order of changing the first test parameters is: damping pad stiffness, air flotation platform fluctuation height, and power amplifier multiplier. Only one first test parameter is changed at a time.
[0062] When the first test parameter is the air-float platform fluctuation height or the power amplifier multiple, the air-float platform fluctuation height or the power amplifier multiple is continuously increased or continuously decreased, while the corresponding first load vibration frequency is continuously acquired. When the first load vibration frequency is less than the first value, the change is stopped, and the air-float platform fluctuation height or the power amplifier multiple is updated to the second test parameter.
[0063] In practice, by dynamically adjusting the stiffness of the damping pads and other test parameters, the load vibration frequency is ensured to remain below the set safety threshold, thus protecting the equipment from damage caused by excessive vibration. By progressively optimizing the damping pad stiffness and other test parameters, the optimal combination of damping parameters is found, thereby improving the damping effect. This threshold control and progressive optimization method for adjusting damping parameters provides a scientific and systematic approach to setting the parameters of the vibration damping platform. Its main advantages include ensuring the vibration frequency remains below the safety threshold, improving damping effect, increasing engineering efficiency, and enhancing safety and reliability. This method is applicable to various industrial scenarios, especially those with high vibration control requirements, such as precision instrument manufacturing plants and electronic equipment manufacturing plants. Through this method, the impact of vibration on equipment and personnel is effectively reduced, improving production efficiency and product quality.
[0064] After the second test parameter is obtained for the first time, the first test parameter is changed until the first load vibration frequency is greater than or equal to the first value. Then the adjustment is stopped and the first test parameter at this time is set as the third test parameter. The second test parameter and the third test parameter are used as limits, the smaller limit is used as the lower limit, and the larger limit is used as the upper limit to construct the standard range of the second test parameter.
[0065] Methods for continued modification include:
[0066] When the second test parameter is set when testing the stiffness of the damping pad, the stiffness of the damping pad is changed continuously, and the first load vibration frequency is continuously obtained. When the first load vibration frequency is greater than or equal to the first value, the range of change of the damping pad is set as the standard range of the damping pad. After the standard range of the damping pad is set, the second value and the third value are set as allowable thresholds. The sum and difference of the air flotation platform fluctuation height and power amplifier multiple in the first test parameter and the corresponding allowable threshold are calculated respectively. The sum is used as the upper limit and the difference is used as the lower limit to construct the standard range of the air flotation platform fluctuation height and the standard range of the power amplifier multiple respectively.
[0067] The logic for further changing the remaining second test parameters is the same as the logic for further changing the damping pad stiffness.
[0068] In practice, by continuously adjusting the test parameters, the range of parameters that meet the conditions is found, ensuring that the vibration reduction platform can achieve a stable vibration reduction effect under various working conditions. When it is necessary to adjust the vibration reduction measures, the standard range can be quickly referenced to make scientific and reasonable decisions and improve engineering efficiency.
[0069] Load parameters include load weight and load volume;
[0070] Establish a first mapping relationship between load parameters, environmental vibration frequency and standard range of second test parameters. By inputting environmental vibration frequency and load parameters into the first mapping relationship, the corresponding second test parameters are obtained.
[0071] The control unit controls the setting parameters of the vibration damping platform based on the second test parameters.
[0072] This invention dynamically adjusts vibration damping parameters through a testing and feedback mechanism, effectively reducing the vibration frequency of the load. This method automatically optimizes the damping parameters based on different loads and environmental conditions, thereby improving the damping effect. It adapts to different factory environments and load conditions, ensuring good damping performance under various circumstances. By determining the standard range of the second test parameter, the stability and reliability of the damping parameters are ensured. This helps avoid unstable damping effects caused by parameter fluctuations. After establishing a mapping relationship, automated control of the damping platform is achieved, reducing interference from human factors and further improving the stability and reliability of the system. Through step-by-step testing and adjustment, unnecessary testing steps are reduced, improving testing efficiency.
[0073] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code. The storage medium is implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention should all be covered within the scope of the claims of the present invention.
Claims
1. A vibration reduction and control method for a micro-vibration platform, characterized in that, Includes the following steps: Step S100: Set the vibration frequency calculated at any point in the factory as the environmental vibration frequency, test the load with the first test parameters, and obtain the test results. Step S200: Adjust the first test parameter according to the test result to obtain the second test parameter, and obtain the second load vibration frequency corresponding to the second test parameter, and obtain the standard range of the second test parameter according to the second load vibration frequency; The methods for setting the second test parameter include: Set the first value as the vibration frequency threshold, compare the first load vibration frequency with the first value, and when the first load vibration frequency is greater than or equal to the first value, change the first test parameter until the first load vibration frequency is less than the first value, then stop changing the parameter and set the changed first test parameter as the second test parameter. When the first load vibration frequency is less than the first value, the first test parameter is not changed, and the original first test parameter is updated to the second test parameter. After the second test parameter is obtained for the first time, the first test parameter is changed until the first load vibration frequency is greater than or equal to the first value. Then the adjustment is stopped and the first test parameter at this time is set as the third test parameter. The second test parameter and the third test parameter are used as limits, the smaller limit is used as the lower limit, and the larger limit is used as the upper limit to construct the standard range of the second test parameter. Step S300: Establish a first mapping relationship between the load parameters, the environmental vibration frequency and the standard range of the second test parameters, and control the vibration damping platform according to the first mapping relationship.
2. The vibration reduction and control method for a micro-vibration platform as described in claim 1, characterized in that: A spatial coordinate system is established with any corner point of the space where the factory is located as the origin, and the three adjacent sides of the origin as the x-axis, y-axis and z-axis. The coordinates of any point in the factory are obtained in the coordinate system, and the coordinates of the geometric center of the first length of railway track are set as the coordinates of the vibration source.
3. The vibration reduction and control method for a micro-vibration platform as described in claim 2, characterized in that: A vibration frequency model is established, and the environmental vibration frequency at any point within the factory building is calculated using this model. The calculation expression for the vibration frequency model is as follows: ; in, Let f0 be the environmental vibration frequency at any point within the factory building, d be the straight-line distance between any point within the factory building and the geometric center of the vibration source (represented by a high-speed train), and the straight-line distance be a three-dimensional straight-line distance. Let f0 be the vibration frequency at the vibration source, and d0 be a constant, representing a reference distance. It is a constant, and It is represented as an index related to frequency attenuation characteristics.
4. The vibration reduction and control method for a micro-vibration platform as described in claim 3, characterized in that: The first test parameter refers to the relevant parameters of the vibration reduction platform; The first test parameters include the stiffness of the damping pad, the fluctuation height of the air-floating platform, and the power amplifier factor; The test result is expressed as the first load vibration frequency; The materials used for shock-absorbing pads include natural rubber, synthetic rubber, polyurethane foam, polyethylene foam, polyurethane, EVA, ACF artificial cartilage material, metal, modified polypropylene, and rubber particle composite materials. Different materials correspond to different stiffness ranges for shock-absorbing pads.
5. The vibration reduction and control method for a micro-vibration platform as described in claim 1, characterized in that: When the first test parameter is the stiffness of the damping pad, the current damping pad material is obtained. Within the stiffness range of the current damping pad material, damping pads of the same material with different stiffness values are continuously selected. The selected damping pads are retested to obtain the corresponding first load vibration frequency. The change is stopped when the first load vibration frequency is less than the first value. The damping pads of the same material with the stiffness value are then updated to the second test parameter. When all damping pads of the same material with the same stiffness value are traversed and the corresponding first load vibration frequency is greater than or equal to the first value, switch to other damping pad materials and repeat the above method of changing damping pads of the same material until the first load vibration frequency is less than the first value, stop changing, and update the damping pads of different materials with different stiffness values to the second test parameter. When all different materials of damping pads with stiffness values are traversed and the corresponding first load vibration frequency is greater than or equal to the first value, other first test parameters are changed. The order of changing the first test parameter is: damping pad stiffness, air flotation platform fluctuation height, and power amplifier multiplier. Only one first test parameter is changed at a time.
6. The vibration reduction and control method for a micro-vibration platform as described in claim 1, characterized in that: When the first test parameter is the air flotation platform fluctuation height or the power amplifier multiple, the air flotation platform fluctuation height or the power amplifier multiple is continuously increased or continuously decreased, while the corresponding first load vibration frequency is continuously acquired. When the first load vibration frequency is less than the first value, the change is stopped, and the air flotation platform fluctuation height or the power amplifier multiple is updated to the second test parameter.
7. The vibration reduction and control method for a micro-vibration platform as described in claim 1, characterized in that: Methods for continued modification include: When the second test parameter is set when testing the stiffness of the damping pad, the stiffness of the damping pad is changed continuously, and the first load vibration frequency is continuously obtained. When the first load vibration frequency is greater than or equal to the first value, the range of change of the damping pad is set as the standard range of the damping pad. After the standard range of the damping pad is set, the second value and the third value are set as allowable thresholds. The sum and difference of the air flotation platform fluctuation height and power amplifier multiple in the first test parameter and the corresponding allowable threshold are calculated respectively. The sum is used as the upper limit and the difference is used as the lower limit to construct the standard range of the air flotation platform fluctuation height and the standard range of the power amplifier multiple respectively. The logic for further changing the remaining second test parameters is the same as the logic for further changing the damping pad stiffness.
8. The vibration reduction and control method for a micro-vibration platform as described in claim 1, characterized in that: The load parameters include load weight and load volume; Establish a first mapping relationship between load parameters, environmental vibration frequency and standard range of second test parameters. By inputting environmental vibration frequency and load parameters into the first mapping relationship, the corresponding second test parameters are obtained. The control unit controls the setting parameters of the vibration damping platform based on the second test parameters.
9. A vibration damping control system for a micro-vibration platform, the system being used to execute the vibration damping control method for a micro-vibration platform as described in claim 1, characterized in that, It includes a calculation module, a testing module, and a control module; The calculation module is used to set the vibration frequency calculated at any point in the factory as the environmental vibration frequency, test the load with the first test parameters, and obtain the test results. The test module is used to adjust the first test parameter according to the test result to obtain the second test parameter, and obtain the second load vibration frequency corresponding to the second test parameter, and obtain the standard range of the second test parameter according to the second load vibration frequency; The control module is used to establish a first mapping relationship between the load parameters, the environmental vibration frequency and the standard range of the second test parameters, and to control the vibration damping platform according to the first mapping relationship.
Citation Information
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