Magnetorheological elastomer vibration conveying screen

Abstract

The invention belongs to the technical field of material conveying, and particularly relates to a magneto-rheological elastomer vibration conveying screen which comprises a rack and a screen bed, the screen bed is of a four-layer composite structure design, and the upper layer is a working face composed of a plurality of independent rigid beams; the second layer is an organ plate sealing lattice filled with a magnetorheological elastomer; the third layer is a sealing layer; the bottom layer is an electromagnet matrix layer. The control system collects material state data in real time through the sensor, dynamically adjusts working parameters of the electromagnet after analysis and processing, controls rigidity changes of the magnetorheological elastomer, and achieves self-adaptive conveying of materials. The equipment supports three working modes: in the traveling wave conveying mode, propelling waves are formed through phase control, so that the conveying efficiency is improved; the whole oscillation starting mode realizes uniform vibration, and the conveying stability is ensured; and material deviation is automatically corrected in a differential deviation correction mode, so that the operation reliability is ensured. The conveying efficiency and the material protection are optimally balanced, the material breakage rate is reduced, and the equipment adaptability and the intelligent level are improved.

Description

Technical Field

[0001] This invention belongs to the field of material conveying technology, and in particular relates to a magnetorheological elastomer vibrating conveyor screen. Background Technology

[0002] As a key piece of equipment in modern industrial production, the performance of vibrating conveyor screens directly affects material conveying efficiency and product quality. Traditional equipment, using mechanical eccentric blocks or single electromagnet drives, suffers from three significant drawbacks: First, fixed vibration parameters lead to poor adaptability, making it impossible to dynamically adjust according to material characteristics. For materials of different qualities, brittleness, or shapes, a fixed vibration mode can easily cause material damage or low conveying efficiency, especially when handling high-value brittle materials, where rigid collisions cause significant losses. Second, a lack of intelligent sensing capabilities means traditional equipment cannot monitor material distribution in real time. Fluctuations in material flow or uneven loading can easily lead to uneven conveying and incomplete screening. Third, the mechanical structure has significant limitations; traditional vibration mechanisms struggle to achieve localized differentiated vibration control, making it impossible to implement precise correction or variable-speed conveying for different areas of the screen surface.

[0003] Existing improved solutions using magnetorheological elastomers still have significant shortcomings: most designs only use them as auxiliary vibration damping elements, failing to construct a complete magnetic field control matrix; the control system lacks multi-parameter collaborative optimization capabilities, especially in achieving closed-loop adjustment based on real-time material conditions; and the operating mode is singular, making it difficult to simultaneously meet multiple requirements such as efficient conveying, material protection, and stable operation. These problems severely restrict the application effectiveness of vibrating conveyor screens in precision manufacturing, high-value-added product production, and other fields.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0005] 1. The purpose of this invention is to address the problems mentioned in the background art above by providing a magnetorheological elastomer vibrating conveyor screen and its adaptive control method, which has the advantages of dynamically adjusting the screen surface stiffness, adapting to different material characteristics, improving conveying efficiency and protecting the integrity of materials.

[0006] 2. To achieve the above objectives, the present invention adopts the following technical solution: a magnetorheological elastomer vibrating conveyor screen, comprising a frame and a control system;

[0007] 3. A sieve bed is provided on the frame;

[0008] 4. The sieve bed comprises a magnetorheological elastomer layer and an electromagnet matrix. The stiffness of the magnetorheological elastomer layer is controlled by an external magnetic field. The electromagnet matrix is ​​composed of multiple independently controlled electromagnet units and provides the required magnetic field to the magnetorheological elastomer layer.

[0009] 5. The control system includes a central processing unit and a sensor system;

[0010] 6. The central processing unit is configured to execute an adaptive control method, which senses the material state through the sensor system, and then controls the working mode and parameters of the electromagnet matrix to drive the magnetorheological elastomer layer to produce periodic stiffness changes, thereby enabling the screen surface to form a bounce and buffer cycle that adapts to the material characteristics.

[0011] 7. Furthermore, the sieve bed comprises four levels arranged from top to bottom:

[0012] 8. The first level is the upper structure, which consists of multiple independent rigid beams arranged horizontally and extending longitudinally along the screen bed;

[0013] 9. The second layer is the intermediate layer, which is a bellows-board sealing grid made of flexible sealing material. This grid forms multiple small sealing cells that are isolated from each other and filled with magnetorheological elastomer material.

[0014] 10. The third layer is a sealing layer, which is fixedly connected to the lower part of the intermediate layer to form a sealed cavity;

[0015] 11. The fourth layer is an electromagnet matrix layer, which is composed of the electromagnet units and fixedly connected to the bottom of the sealing layer;

[0016] 12. Wherein, the bottom surface of the independent rigid beam is fixedly connected to the top surface of the corresponding sealing cell in the intermediate layer.

[0017] 13. Further, the adaptive control method executed by the central processing unit includes the following steps:

[0018] 14. Collect vibration data of the screen bed and images of material movement through a sensor system to obtain the raw dataset;

[0019] 15. The original dataset is processed to obtain a material characteristic vector that characterizes the physical properties and real-time distribution state of the material;

[0020] 16. Compare and calculate the material characteristic vector with the preset conveying target to determine the target vibration parameters and target working mode;

[0021] 17. Map the target vibration parameters into multiplex control signals with specific timing and current intensity;

[0022] 18. The multi-channel control signal is applied to the electromagnet matrix to drive the corresponding magnetorheological elastomer region to produce periodic stiffness changes, thereby realizing the preset working mode.

[0023] 19. Further, the target operating modes include traveling wave transmission mode, overall vibration mode, and differential speed correction mode;

[0024] 20. When in traveling wave conveying mode, control each independent rigid beam to move sequentially according to a preset phase difference, forming a directional traveling wave to push the material;

[0025] 21. When in overall vibration mode, control all independent rigid beams to move synchronously, providing uniform bounce;

[0026] 22. When in differential speed correction mode, the vibration intensity of different transverse areas of the screen surface is controlled differently to correct material deviation.

[0027] 23. Further, the process of determining the target vibration parameters includes:

[0028] 24. Adjust the target current intensity according to the average mass of the material in the material characteristic vector, adjust the target buffer time according to the brittleness coefficient of the material, and adjust the target vibration frequency according to the difference between the real-time conveying speed and the preset conveying target.

[0029] 25. Further, the process of determining the target working mode includes:

[0030] 26. When the material characteristic vector shows uneven material distribution, select the differential speed correction mode; when it is necessary to improve the conveying efficiency, select the traveling wave conveying mode; when it is necessary to maintain stable material conveying, select the overall vibration mode.

[0031] 27. Further, the process of mapping the target vibration parameters into multiple control signals includes:

[0032] 28. Determine the energizing sequence and interval of each electromagnet unit according to the target vibration frequency, determine the current magnitude of each electromagnet unit according to the target current intensity, and determine the cooperative working mode of each electromagnet unit according to the target working mode.

[0033] 29. Further, the process of implementing the preset working mode includes:

[0034] 30. Reduce the current of the corresponding electromagnet unit in the material contact stage to provide buffering; increase the current of the corresponding electromagnet unit in the material bounce stage to provide elasticity.

[0035] 31. Furthermore, the adaptive control method further includes a real-time adjustment process:

[0036] 32. Determine the actual motion state of the material by continuously collecting material motion images. When there is a deviation between the actual motion state and the expected state, redetermine the target vibration parameters and adjust the control signal.

[0037] 33. Furthermore, the adaptive control method further includes:

[0038] 34. During the system startup phase, a gradual parameter adjustment is adopted, starting with a lower current and frequency, and gradually increasing to the target vibration parameters in combination with the feedback of material motion images.

[0039] 35. This invention provides a magnetorheological elastomer vibrating conveyor screen and its adaptive control method. Through the synergistic effect of the magnetorheological elastomer layer and the electromagnet matrix, combined with real-time sensing and adaptive control algorithms, the screen surface stiffness and vibration mode are dynamically adjusted. This solves the problem of the fixed vibration parameters of traditional equipment and its inability to adapt to changes in material characteristics. It has the advantages of improving conveying efficiency, reducing material breakage rate and enhancing operational stability. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of a magnetorheological elastomer vibrating conveyor screen provided by the present invention;

[0041] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0042] Figure 3 This is a longitudinal cross-sectional view of a magnetorheological elastomer vibrating conveyor screen provided by the present invention;

[0043] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0044] Figure 5 This is a flowchart of an adaptive control method for a magnetorheological elastomer vibrating conveyor screen provided by the present invention. Detailed Implementation

[0045] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Traditional vibrating conveyor equipment has significant shortcomings when handling materials with different properties: Traditional equipment uses an integral screen structure, which cannot achieve localized adjustment, leading to material segregation and accumulation during transport; traditional equipment lacks intelligent sensing capabilities and cannot adjust operating parameters in real time according to material conditions, resulting in high energy consumption and limited material protection. These inherent defects severely restrict the application of vibrating conveyor equipment in the field of precision material handling.

[0047] This invention solves these problems through an innovative structure and control system. (See also...) Figure 1 — Figure 5 This invention provides a magnetorheological elastomer vibrating conveyor screen, including a frame 1 and a control system. A unique screen bed 2 is mounted on the frame 1. The screen bed 2 adopts a four-layer composite structure design. The uppermost layer is the upper structure 21, which consists of multiple horizontally arranged independent rigid beams 211 forming the working surface. These independent rigid beams 211 are made of high magnetic permeability steel, with a wear-resistant material layer covering the top surface and a high-strength adhesive used to fix the bottom surface to the middle layer 22.

[0048] The second layer is the intermediate layer 22, which is a bellows sealing grid filled with magnetorheological elastomer material. The bellows sealing grid is formed by a corrugated structure made of rubber or silicone, which forms multiple isolated sealing cells 221.

[0049] The third layer is the sealing layer 23, which is made of non-magnetic or weakly magnetic metal material to ensure a complete seal between the intermediate layer 22 and the internal magnetorheological elastomer material.

[0050] The bottom layer is the electromagnet matrix layer 24, which consists of multiple independently controlled electromagnet units 241.

[0051] The control system includes a central processing unit and a sensor system. The sensor system is equipped with a high-speed vision sensor, an acceleration sensor and an acoustic emission sensor, which can monitor the material status and equipment operating parameters in real time. The feed end and discharge end of the screen bed 2 are also equipped with material flow detection modules.

[0052] In a preferred workflow of this invention, the system first comprehensively collects operational data through a sensor system. Specifically, a high-speed vision sensor continuously acquires images of material distribution, an acoustic emission sensor captures material impact characteristics, an accelerometer monitors the vibration state of the screen body, a temperature sensing module detects the operating temperature of the electromagnet unit 241, and a flow detection module records the material inflow and outflow. All this data constitutes a multimodal raw dataset, which is transmitted to the central processing unit for in-depth processing.

[0053] The central processing unit performs feature extraction and data fusion processing on the multimodal raw dataset. It obtains the average mass and real-time conveying speed of the material by analyzing material motion images, derives the material brittleness coefficient by analyzing impact signal characteristics, assesses the system's thermal state using temperature data, and determines the processing capacity balance using material flow rate data. These analytical results are integrated into a comprehensive vector characterizing both material properties and system state.

[0054] Based on this comprehensive vector, the central processing unit executes an intelligent decision-making process. The system compares and calculates the material characteristics with the preset conveying target, adjusts the target current intensity according to the average mass of the material, adjusts the target buffer time according to the brittleness coefficient of the material, and adjusts the target vibration frequency according to the difference between the real-time conveying speed and the preset target. Simultaneously, the system automatically selects the operating mode based on the uniformity of material distribution: when uneven material distribution is detected, a differential speed correction mode is activated; when conveying efficiency needs to be improved, a traveling wave conveying mode is selected; and when stable conveying needs to be maintained, an overall vibration mode is adopted.

[0055] During the signal mapping phase, the system transforms the decision results into specific control commands. The energizing sequence and interval of each electromagnet unit 241 are determined based on the target vibration frequency; the current magnitude of each electromagnet unit 241 is determined based on the target current intensity; and the cooperative working mode of each electromagnet unit is determined based on the target operating mode. For the traveling wave transmission mode, the system generates control signals with phase differences; for the overall oscillation mode, a synchronization control signal is generated; and for the differential correction mode, a differentiated control signal is generated.

[0056] Finally, during the execution phase, the system applies multiple control signals to the electromagnet matrix layer 24 via the current drive module. When the material needs to bounce, the current in the corresponding electromagnet unit 241 is increased to harden the magnetorheological elastomer and provide sufficient elasticity. During the material falling and contacting phase, the current is reduced to soften the material and achieve effective buffering. The system continuously monitors the execution effect, judging the actual motion state through real-time acquired material motion images. When a deviation from the expected state is detected, the target parameters are immediately recalculated and the control signals are adjusted to form closed-loop control. During the system startup phase, a gradual parameter adjustment strategy is also adopted, starting with lower current and frequency and gradually increasing to the target operating parameters based on feedback data to ensure a smooth start-up.

[0057] This invention achieves the best balance between conveying efficiency and material protection through intelligent sensing and dynamic stiffness adjustment. The zone control capability of the independent rigid beam (211) effectively solves the problems of material deviation and uneven distribution. The flexible structure of the bellows plate sealing grid ensures good sealing performance and extends the service life of the equipment. The intelligent switching of three working modes enables the equipment to adapt to various complex working conditions, greatly improving the applicability and reliability of the equipment.

[0058] Traditional vibrating conveyor systems have significant drawbacks when handling fragile materials. The uniform vibration pattern makes the material's trajectory on the screen surface uncontrollable, resulting in severe collisions and a high breakage rate. Furthermore, the lack of an effective directional propulsion mechanism limits material conveying efficiency, making it difficult to meet the high-efficiency requirements of modern production lines.

[0059] The traveling wave transmission mode of this invention effectively solves these problems through an innovative phase control method. In this mode, the central processing unit precisely controls the operating timing of each electromagnet unit 241 in the electromagnet matrix layer 24.

[0060] The system first activates the electromagnet unit 241 in the feed end area, which hardens the magnetorheological elastomer in the corresponding area and bounces the material up. Then, according to a preset phase difference, the electromagnet units 241 in adjacent areas are activated sequentially to form a continuous propulsive motion waveform. This wave-like motion is achieved through precise timing control to ensure that the material is always subjected to a continuous forward propulsive force.

[0061] In a specific implementation case, the system intelligently optimizes the traveling wave parameters based on material characteristics. For materials with higher density, the system appropriately increases the excitation intensity of individual areas; for materials with higher brittleness, it reduces the bounce height while increasing the waveform frequency. By adjusting the energizing timing and current intensity of the electromagnet unit 241, the propagation speed and amplitude of the traveling wave can be precisely controlled, ensuring that materials with different characteristics maintain a stable flow state on the screen surface. The system also dynamically adjusts the waveform parameters based on real-time feedback to ensure that the conveying process is always in an optimal state.

[0062] This mode brings significant comprehensive benefits. The directional and orderly movement of materials greatly reduces mutual collisions and friction, effectively lowering the material breakage rate. The continuous traveling wave propulsion mechanism significantly improves conveying efficiency, showing a marked improvement over traditional vibration methods. Because energy is concentrated in the effective conveying direction, energy consumption is optimized, achieving energy-saving production. The gentle wave-like conveying method is particularly suitable for handling fragile materials and precision parts, expanding the equipment's application range.

[0063] Traditional vibrating screens suffer from inflexible adjustment when processing ordinary materials. The fixed-frequency vibration cannot adapt to the characteristics of different materials, potentially leading to energy waste or unsatisfactory conveying effects. They are prone to clogging when processing viscous materials, while excessive bouncing can occur when handling lightweight materials. Traditional equipment lacks intelligent adjustment capabilities, making it difficult to achieve an ideal balance between conveying efficiency and material protection, thus impacting production efficiency.

[0064] The overall vibration mode provided by this invention achieves optimized operation through unified and coordinated control. In this mode, all electromagnet units 241 receive synchronous control signals, resulting in a uniform vibration effect across the entire screen surface. The system automatically adjusts the overall vibration parameters according to the material characteristics, controlling the vibration frequency by changing the current frequency and the amplitude by adjusting the current intensity. Under the action of the electromagnetic field, the magnetorheological elastomer layer forms a uniform rigid working surface, providing a stable vibration conveying environment for various materials.

[0065] In a typical application scenario, the system monitors the material status in real time using multiple sensors and automatically selects the optimal combination of vibration parameters. When handling denser mineral raw materials, the system increases overall stiffness and amplitude; when handling lightweight plastic granules, it appropriately reduces vibration intensity while maintaining necessary conveying efficiency. This adaptive adjustment mechanism ensures optimal conveying performance for various materials while avoiding excessive energy consumption. The system also automatically optimizes vibration parameters based on conveying distance and material flow rate, achieving highly efficient conveying throughout the entire process.

[0066] This mode exhibits numerous technological advantages: simplified control logic improves system reliability and significantly reduces equipment failure rate; adaptive adjustment capabilities enable the equipment to flexibly handle materials with different characteristics, greatly improving equipment utilization; uniform vibration distribution promotes material loosening and uniform distribution, improving overall process performance; and the energy-saving operation mode effectively reduces production costs while ensuring stable conveying performance. This mode is particularly suitable for production applications requiring high conveying stability.

[0067] Material deviation is a common technical problem in vibratory conveying processes. Traditional equipment lacks an effective automatic correction mechanism. Uneven material distribution on the screen surface leads to unbalanced operation, affecting equipment lifespan. Deviant material continuously impacts the equipment sidewalls, causing material breakage and structural damage. Traditional solutions mainly rely on manual observation and adjustment, which has a delayed response and limited adjustment accuracy, seriously affecting production stability and product quality.

[0068] The differential speed correction mode of this invention achieves a technological breakthrough through intelligent sensing and precise control. The system monitors the material distribution in real time using a high-speed visual sensor. When a deviation of the material flow to one side is detected, the central processing unit immediately initiates an intelligent correction program. The system enhances the excitation force of the electromagnet unit 241 on the sparse side of the material, while maintaining or appropriately reducing the vibration intensity on the piled-up side. By generating an effective correction torque through the speed difference between the two sides, the material flow smoothly returns to the normal conveying path.

[0069] In a specific application example, the system employs a gradual and precise adjustment strategy. When slight deviations are detected, the system intervenes with minor adjustments; when significant deviations occur, stronger corrective actions are implemented. The system continuously monitors the corrective effect and dynamically adjusts control parameters through closed-loop control to ensure the material flow smoothly returns to the ideal distribution. The entire corrective process is fully automated, requiring no manual intervention, achieving intelligent operation. The system also possesses learning capabilities, enabling it to optimize corrective parameters based on historical data.

[0070] This model brings about significant technological improvements. The automated intelligent deviation correction mechanism ensures a stable distribution of material flow, significantly improving equipment operational reliability; effective anti-deviation measures reduce abnormal contact between materials and equipment, extending equipment lifespan; uniform material distribution allows for full utilization of the screen surface, improving conveying efficiency and production capacity; the intelligent control system greatly reduces the burden on operators, improves the level of production automation, and the reliable anti-deviation function provides an important guarantee for continuous production.

[0071] This invention achieves an optimal balance between conveying efficiency and material protection through intelligent sensing and dynamic stiffness adjustment; independent zone control effectively solves the problems of material deviation and uneven distribution; the flexible bellows structure ensures good sealing performance and extends the service life of the equipment; intelligent switching between three working modes enables the equipment to adapt to various complex working conditions, greatly improving the applicability and reliability of the equipment; precise energy control combined with a temperature management mechanism effectively reduces equipment energy consumption and prevents system overheating; the adaptive control mechanism ensures stable processing capacity under different material flow rates, while reducing reliance on operators and improving the level of production automation.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A magnetorheological elastomer vibrating conveyor screen, comprising a frame and a control system, characterized in that: A sieve bed is installed on the frame; The sieve bed includes a magnetorheological elastomer layer and an electromagnet matrix. The stiffness of the magnetorheological elastomer layer is controlled by an external magnetic field. The electromagnet matrix is ​​composed of multiple independently controlled electromagnet units and provides the required magnetic field to the magnetorheological elastomer layer. The control system includes a central processing unit and a sensor system; The central processing unit is configured to execute an adaptive control method, which senses the material state through the sensor system, and then controls the working mode and parameters of the electromagnet matrix to drive the magnetorheological elastomer layer to produce periodic stiffness changes, thereby enabling the screen surface to form a bounce and buffer cycle that adapts to the material characteristics.

2. The magnetorheological elastomer vibrating conveyor screen according to claim 1, characterized in that, The sieve bed comprises four levels arranged from top to bottom: The first level is the upper structure, which consists of multiple independent rigid beams arranged horizontally and extending longitudinally along the screen bed; The second layer is the middle layer, which is a bellows-board sealing grid made of flexible sealing material. This grid forms multiple small sealing cells that are isolated from each other and filled with magnetorheological elastomer material. The third layer is a sealing layer, which is fixedly connected to the bottom of the intermediate layer to form a sealed cavity; The fourth layer is the electromagnet matrix layer, which is composed of the electromagnet units and fixedly connected to the bottom of the sealing layer; The bottom surface of the independent rigid beam is fixedly connected to the top surface of the corresponding sealed small cell in the intermediate layer.

3. The magnetorheological elastomer vibrating conveyor screen according to claim 1, characterized in that, The adaptive control method executed by the central processing unit includes the following steps: The raw dataset is obtained by collecting screen bed vibration data and material motion images through a sensor system; The original dataset is processed to obtain a material characteristic vector that represents the physical properties and real-time distribution state of the material. The material characteristic vector is compared and calculated with the preset conveying target to determine the target vibration parameters and target working mode; The target vibration parameters are mapped into multiple control signals with specific timing and current intensity. The multi-channel control signal is applied to the electromagnet matrix, driving the corresponding magnetorheological elastomer region to produce periodic stiffness changes, thereby realizing the preset working mode.

4. The magnetorheological elastomer vibrating conveyor screen according to claim 3, characterized in that, The target operating modes include traveling wave transmission mode, overall vibration mode and differential speed correction mode; When in traveling wave conveying mode, each independent rigid beam is controlled to move sequentially according to a preset phase difference, forming a directional traveling wave to push the material. When in overall vibration mode, all independent rigid beams are controlled to move synchronously to provide uniform bounce; When in differential speed correction mode, the vibration intensity of different transverse areas of the screen surface is controlled differently to correct material deviation.

5. A magnetorheological elastomer vibrating conveyor screen according to claim 3, characterized in that, The process of determining the target vibration parameters includes: The target current intensity is adjusted based on the average mass of the material in the material characteristic vector, the target buffer time is adjusted based on the brittleness coefficient of the material, and the target vibration frequency is adjusted based on the difference between the real-time conveying speed and the preset conveying target.

6. A magnetorheological elastomer vibrating conveyor screen according to claim 3, characterized in that, The process of determining the target working mode includes: When the material characteristic vector shows uneven material distribution, select the differential speed correction mode; when it is necessary to improve conveying efficiency, select the traveling wave conveying mode; and when it is necessary to maintain stable material conveying, select the overall vibration mode.

7. A magnetorheological elastomer vibrating conveyor screen according to claim 3, characterized in that, The process of mapping the target vibration parameters into multiple control signals includes: The energizing sequence and interval of each electromagnet unit are determined based on the target vibration frequency, the current magnitude of each electromagnet unit is determined based on the target current intensity, and the cooperative working mode of each electromagnet unit is determined based on the target working mode.

8. A magnetorheological elastomer vibrating conveyor screen according to claim 3, characterized in that, The process of implementing the preset working mode includes: During the material contact phase, the current of the corresponding electromagnet unit is reduced to provide buffering; during the material bounce phase, the current of the corresponding electromagnet unit is increased to provide elasticity.

9. A magnetorheological elastomer vibrating conveyor screen according to claim 3, characterized in that, The adaptive control method further includes a real-time adjustment process: The actual motion state of the material is determined by continuously acquiring images of the material's motion. When there is a deviation between the actual motion state and the expected state, the target vibration parameters are redefined and the control signal is adjusted.

10. A magnetorheological elastomer vibrating conveyor screen according to claim 3, characterized in that, The adaptive control method further includes: During the system startup phase, a gradual parameter adjustment is adopted, starting with lower current and frequency, and gradually increasing to the target vibration parameters based on feedback from material motion images.

Images