Vibration isolation system, method, device and electronic equipment

Abstract

The present application discloses a vibration isolation system, method, device and electronic equipment, which relate to the field of vibration isolator technology. The vibration isolation system includes a working platform, a vibration damper, a mounting platform and a sealing device. The vibration damper is installed above the mounting platform, and the working platform is above the vibration damper. The sealing device is used to fix and seal the vibration damper. The vibration damper is provided with N upper magnets near the mounting platform surface, and the mounting platform is provided with N lower magnets opposite to the N upper magnets near the vibration damper surface. The corresponding upper and lower magnets are connected by springs. The surfaces of the N upper magnets are respectively surrounded by a first coil, and each first coil is respectively connected to a current controller, and / or the surfaces of the N lower magnets are respectively surrounded by a second coil, and each second coil is respectively connected to a current controller. The vibration isolation system can automatically adjust the stiffness according to the actual working state and has a good vibration reduction effect.

Description

Technical Field

[0001] The present application relates to the technical field of vibration dampers, and in particular to a vibration isolation system, method, device and electronic equipment. Background Art

[0002] With the rapid development of industrial production, various high-precision equipment are widely used in various industries, such as the automotive industry, aerospace, and ships. The more complex the structure of these equipment and the more sophisticated the related components, the higher the reliability requirements and the more stringent the demand for external and internal vibration suppression. Currently, most vibration isolation systems are single rubber isolation systems. Due to the inherent characteristics of rubber structures, the dynamic stiffness changes little after the design is completed, making it difficult to meet the vibration isolation and noise reduction requirements under various operating conditions. Therefore, there is an urgent need for a vibration isolation system and method that can automatically adjust the stiffness according to the actual operating conditions. Summary of the Invention

[0003] The embodiments of the present application provide a vibration isolation system, method, device, and electronic equipment for solving the problem that current vibration isolation systems cannot automatically adjust stiffness according to actual working conditions.

[0004] In a first aspect, the present application provides a vibration isolation system, comprising a working platform, a vibration absorber, a mounting platform, and a sealing device, wherein the vibration absorber is mounted above the mounting platform, and the working platform is above the vibration absorber, and the sealing device is used to fix and seal the vibration absorber;

[0005] The vibration absorber is provided with N upper magnets on a surface near the mounting platform, and the mounting platform is provided with N lower magnets opposite to the N upper magnets on a surface near the vibration absorber, and the corresponding upper magnets and lower magnets are connected by springs, wherein N is an integer greater than or equal to 1;

[0006] The N upper magnet surfaces respectively surround the first coils, and each first coil is respectively connected to a current controller, and / or the N lower magnet surfaces respectively surround the second coils, and each second coil is respectively connected to the current controller, wherein the current controller is used to adjust the magnitude and direction of the current in the first coil and / or the second coil.

[0007] Based on the above-mentioned vibration isolation system, the stiffness of the vibration isolation system can be adjusted by adjusting the spring between the upper and lower magnets and the magnetic force between the upper and lower magnets, which has a good vibration reduction effect. In addition, based on the spring and magnetic levitation characteristics, the vibration isolation system produces low noise during use.

[0008] In a possible embodiment, a first acceleration sensor is provided on the working platform, and a first acceleration sensor and a signal acquisition instrument are provided on the mounting platform, and the first acceleration sensor and the second acceleration sensor are respectively connected to the signal acquisition instrument;

[0009] The first acceleration sensor is used to obtain a first vibration signal from an excitation source and transmit the first vibration signal to the signal acquisition instrument, wherein the first vibration signal includes a displacement;

[0010] The second acceleration sensor is used to obtain a second vibration signal of the vibration-isolated object and transmit the second vibration signal to the signal acquisition instrument, wherein the second vibration signal includes a vibration velocity;

[0011] The signal acquisition device is used to receive the first vibration signal and the second vibration and speed signal.

[0012] Based on the above-mentioned vibration isolation system, the vibration signals corresponding to the working platform and the installation platform can be collected, thereby realizing the collection of vibration signals of the excitation source and the object to be isolated.

[0013] In a possible embodiment, the vibration absorber includes a plate-type permanent magnet, a vibration absorber connecting rod, and an upper magnet mounting platform; the plate-type permanent magnet and the upper magnet mounting platform surround the vibration absorber connecting rod, and the plate-type permanent magnet is above the upper magnet mounting platform;

[0014] A first cavity is formed between the plate-shaped permanent magnet and the sealing device, and a second cavity is formed between the upper magnet mounting platform and the plate-shaped permanent magnet;

[0015] The first cavity contains a magnetorheological fluid and a flow controller, wherein the flow controller is used to control the flow rate of the magnetorheological fluid flowing into the second cavity;

[0016] A permanent magnet coil is provided on the plate-shaped permanent magnet, and the damping of the magnetorheological fluid can be changed by changing the current of the permanent magnet coil.

[0017] Based on the above vibration isolation system, the damping coefficient of the vibration isolation system can be dynamically adjusted by changing the current of the permanent magnet coil.

[0018] In a possible embodiment, sealing rings are provided between the contact surfaces of the plate-shaped permanent magnet and the upper magnet mounting platform and the sealing device.

[0019] Based on the above-mentioned vibration isolation system, the sealing ring can prevent the magnetorheological fluid from penetrating into the second cavity, thereby affecting the damping of the vibration isolation system, and can also play a role in lateral vibration reduction.

[0020] In a possible embodiment, the flow controller includes a guide groove, a positioning pin, a flow regulating disk, and at least one first flow hole on the plate-shaped permanent magnet, and the flow regulating disk has at least one second flow hole;

[0021] The flow regulating disk surrounds the vibration damper connecting rod and has a contact surface with the plate-shaped permanent magnet, and the contact surface extends to a preset position of the vibration damper connecting rod;

[0022] The guide groove is provided on the flow regulating disk, and the positioning pin is provided on the shock absorber connecting rod, wherein the positioning pin crosses the guide groove;

[0023] The flow regulating disk can rotate around the shock absorber connecting rod within a preset angle range through the guide groove and the positioning pin.

[0024] Based on the above-mentioned vibration isolation system, the flow rate of the magnetorheological fluid can be controlled within a set range, which helps to adjust the damping size of the vibration isolation system.

[0025] In a possible embodiment, the mounting platform includes a shock absorber base, a shock absorber auxiliary support base, and a rubber block;

[0026] The shock absorber auxiliary support seat is located above the shock absorber base, and the side box of the shock absorber base is connected to the shock absorber auxiliary support seat through the rubber block;

[0027] The lower magnet and the boss are mounted on the shock absorber auxiliary support seat, wherein the boss is used to support the spring.

[0028] Based on the above-mentioned vibration isolation system, the vibration absorber auxiliary system and the rubber block help stabilize the vibration absorber and also help improve the vibration reduction effect of the vibration isolation system.

[0029] In a second aspect, the present application provides a vibration isolation method, based on any of the above-mentioned vibration isolation systems, the method comprising:

[0030] Obtaining a first vibration signal corresponding to the working platform and a second vibration signal corresponding to the installation platform, and determining whether there is impact excitation in the current vibration isolation system based on the first vibration signal and the second vibration signal;

[0031] If not, increasing the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches a preset displacement;

[0032] If so, the current of the first coil and / or the second coil is adjusted according to the adjustment strategy corresponding to the magnitude relationship between the displacement corresponding to the first vibration signal and the preset displacement until the displacement corresponding to the first vibration signal reaches the preset displacement.

[0033] The above-mentioned vibration isolation method can adjust the stiffness of the vibration isolation system while ensuring that both the system and the object being isolated are not damaged, and can be applied to various operating conditions. Furthermore, because the vibration reduction method utilizes the characteristics of springs and magnetic levitation, it helps to reduce the noise during the operation of the vibration isolation system.

[0034] In a possible embodiment, adjusting the current of the first coil and / or the second coil according to the adjustment strategy corresponding to the magnitude relationship between the displacement corresponding to the first vibration signal and the preset displacement until the displacement corresponding to the first vibration signal reaches the preset displacement includes:

[0035] When the displacement corresponding to the first vibration signal is less than a preset displacement, increasing the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement;

[0036] When the displacement corresponding to the first vibration signal is greater than a preset displacement, the current of the first coil and / or the second coil is adjusted to reduce the like-pole repulsion or opposite-pole attraction between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement.

[0037] Through the above-mentioned vibration isolation method, when there is impact excitation, different methods are adopted to adjust the current of the upper and lower magnet coils according to the different displacements of the working platform, thereby ensuring that the rigidity of the vibration isolation system is adapted to the working scenario while ensuring that the vibration isolation system and the isolated object are not damaged.

[0038] In a possible embodiment, after the displacement corresponding to the first vibration signal reaches a preset displacement, the method further includes:

[0039] Detecting whether the vibration isolation rate of the vibration isolation system is greater than a preset vibration isolation rate;

[0040] If not, increasing the permanent magnet coil current in the vibration absorber to increase the damping of the vibration isolation system until the vibration isolation rate is greater than the preset vibration isolation rate, and detecting whether the vibration speed corresponding to the second vibration signal is less than a preset speed;

[0041] If it is not less than the preset speed, continue to increase the magnitude of the permanent magnet current until the vibration speed corresponding to the second vibration signal is less than the preset speed.

[0042] The above-mentioned vibration isolation method ensures the vibration isolation rate of the vibration isolation system. At the same time, by adjusting the permanent magnet current, the damping of the vibration isolation system is increased, thereby ensuring that the frequency of the second vibration signal meets the requirements, reducing the vibration frequency of the isolated object, and helping to improve the vibration reduction effect.

[0043] In a third aspect, the present application provides a vibration isolation device, comprising:

[0044] a judgment module, configured to obtain a first vibration signal corresponding to the working platform and a second vibration signal corresponding to the installation platform, and judge whether there is impact excitation in the current vibration isolation system based on the first vibration signal and the second vibration signal;

[0045] a first vibration isolation module, configured to increase the current of the first coil and / or the second coil if no impact excitation exists in the current vibration isolation system, so as to increase the repulsive force of like charges between the upper magnet and the lower magnet, until the displacement corresponding to the first vibration signal reaches a preset displacement;

[0046] The second vibration isolation module is used to adjust the current of the first coil and / or the second coil according to the adjustment strategy corresponding to the size relationship between the displacement corresponding to the first vibration signal and the preset displacement if there is impact excitation in the current vibration isolation system, until the displacement corresponding to the first vibration signal reaches the preset displacement.

[0047] In a possible embodiment, the second vibration isolation module is specifically used to:

[0048] When the displacement corresponding to the first vibration signal is less than a preset displacement, increasing the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement;

[0049] When the displacement corresponding to the first vibration signal is greater than a preset displacement, the current of the first coil and / or the second coil is adjusted to reduce the like-pole repulsion or opposite-pole attraction between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement.

[0050] In a possible embodiment, the vibration isolation system further includes:

[0051] A detection module, configured to detect whether a vibration isolation rate of the vibration isolation system is greater than a preset vibration isolation rate;

[0052] The third vibration isolation module is configured to increase the permanent magnet coil current in the vibration absorber to increase the damping of the vibration isolation system if the vibration isolation rate of the vibration isolation system is less than or equal to the preset vibration isolation rate, until the vibration isolation rate is greater than the preset vibration isolation rate, and then detect whether the vibration speed corresponding to the second vibration signal is less than the preset speed; if not, continue to increase the permanent magnet current until the vibration speed corresponding to the second vibration signal is less than the preset speed.

[0053] In a fourth aspect, the present application provides an electronic device, comprising:

[0054] a memory for storing program instructions;

[0055] The processor is configured to call the program instructions stored in the memory and execute the steps of the vibration isolation method according to any one of the obtained program instructions.

[0056] In a fifth aspect, the present application provides a computer-readable storage medium storing a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes the vibration isolation method described in any one of the second aspects.

[0057] The technical effects that can be achieved in each of the above-mentioned aspects from the third to the fifth aspects and each of the aspects can be referred to the technical effects that can be achieved in the above-mentioned first aspect or the second aspect and various possible solutions related thereto, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 A schematic cross-sectional view of a vibration isolation system provided in an embodiment of the present application;

[0059] Figure 2 A cross-sectional schematic diagram of another vibration isolation system provided in an embodiment of the present application;

[0060] Figure 3 A cross-sectional schematic diagram of another vibration isolation system provided in an embodiment of the present application;

[0061] Figure 4 A cross-sectional schematic diagram of another vibration isolation system provided in an embodiment of the present application;

[0062] Figure 5 A cross-sectional schematic diagram of another vibration isolation system provided in an embodiment of the present application;

[0063] Figure 6a A cross-sectional schematic diagram of another vibration isolation system provided in an embodiment of the present application;

[0064] Figure 6b A schematic diagram of a symmetrical cross-section of a main shock absorber provided in an embodiment of the present application;

[0065] Figure 6c A schematic elevation view of a main shock absorber provided in an embodiment of the present application;

[0066] Figure 7 A schematic flow chart of the steps for executing a vibration isolation method provided in an embodiment of the present application;

[0067] Figure 8 A schematic structural diagram of a vibration isolation device provided in an embodiment of the present application;

[0068] Figure 9 A structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Unless there is a conflict, the embodiments in the present application and the features in the embodiments can be combined with each other in any way. In addition, although a logical order is shown in the flowchart, in some cases, the steps shown or described can be performed in an order different from that here.

[0070] The terms "first" and "second" in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the term "comprising" and any of its variations are intended to cover non-exclusive protection. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. "Multiple" in this application can mean at least two, for example, two, three or more, and the embodiments of this application are not limited thereto.

[0071] Before introducing the vibration isolation system provided by the embodiment of the present application, in order to facilitate understanding, the technical background of the embodiment of the present application is first introduced in detail below.

[0072] Currently, most vibration isolation systems are based on a single rubber system. Due to the inherent characteristics of the rubber structure, the dynamic stiffness of the system changes little after the design is completed, making it difficult to meet the vibration isolation and noise reduction requirements under various working conditions. Therefore, there is an urgent need for a vibration isolation system and method that can automatically adjust the stiffness according to the actual working conditions.

[0073] In order to solve the above problems, the embodiments of the present application provide a vibration isolation system, method, device and electronic equipment, which are based on springs and magnetic levitation as auxiliary vibration reduction structures. According to the principle that like poles repel and opposite poles attract between magnets, the current in the magnet coil can be adjusted, thereby changing the compression amount of the spring and shock absorber, and realizing the adjustment of the stiffness of the entire suspension system, thereby achieving better vibration reduction effect.

[0074] Based on the above technical effects, the preferred embodiments of the present application are described below in conjunction with the drawings in the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In addition, the embodiments of the present application and the features in the embodiments may be combined with each other if there is no conflict.

[0075] like Figure 1 FIG. 1 is a cross-sectional view of a vibration isolation system provided by an embodiment of the present application, comprising a working platform 110, a vibration absorber 120, a mounting platform 130, and a sealing device 140. The vibration absorber 120 is mounted above the mounting platform 130, and the working platform 110 is above the vibration absorber 120. The sealing device 140 is used to fix the vibration absorber 120. The mounting platform 130 acts on the object to be isolated.

[0076] The vibration absorber 120 is provided with N upper magnets 121 on the surface near the mounting platform 130, and the mounting platform 130 is provided with N lower magnets 131 on the surface near the vibration absorber 120, opposite to the N upper magnets. The corresponding upper magnets 121 and lower magnets 131 are connected by springs, where N is an integer greater than or equal to 1;

[0077] The surfaces of the N upper magnets 121 respectively surround the first coil 122, and each first coil 122 is respectively connected to a current controller, and / or the surfaces of the N lower magnets 131 respectively surround the second coil 132, and each second coil 132 is respectively connected to a current controller, wherein the current controller is used to adjust the magnitude and direction of the current in the first coil and / or the second coil.

[0078] Preferably, the N upper magnets 121 and the N lower magnets 131 are symmetrically arranged.

[0079] For example, when N is 2, the vibration isolation system diagram can be referred to Figure 2 .

[0080] Optional, such as Figure 3 As shown, a first acceleration sensor 310 is provided on the working platform 110, and a second acceleration sensor 320 and a signal acquisition device 330 are provided on the loading platform 130. The first acceleration sensor 310 and the second acceleration sensor 320 are connected to the signal acquisition device 330 respectively;

[0081] The first acceleration sensor 310 is used to obtain a first vibration signal from an excitation source and transmit the first vibration signal to the signal acquisition device 330, wherein the first vibration signal includes at least a displacement;

[0082] A second acceleration sensor 320 is used to obtain a second vibration signal of the vibration-isolated object and transmit the second vibration signal to a signal acquisition device 330, wherein the second vibration signal includes a vibration velocity, which may also be a vibration acceleration;

[0083] The signal collector 330 is used to receive the first vibration signal and the second vibration and speed signal.

[0084] Optional, such as Figure 4 As shown, the vibration absorber 120 includes a plate-type permanent magnet 410, a vibration absorber connecting rod 420, and an upper magnet mounting platform 430; the plate-type permanent magnet 410 and the upper magnet mounting platform 430 surround the vibration absorber connecting rod 420, and the plate-type permanent magnet 410 is above the upper magnet mounting platform 430;

[0085] A first cavity is formed between the plate-shaped permanent magnet 410 and the sealing device 140, and a second cavity is formed between the upper magnet mounting platform 430 and the plate-shaped permanent magnet 410. The first cavity contains magnetorheological fluid and a flow controller 440, which is used to control the flow rate of the magnetorheological fluid into the second cavity.

[0086] A permanent magnet coil 450 is provided on the plate-shaped permanent magnet 410 . By changing the current of the permanent magnet coil 450 , the damping of the magnetorheological fluid can be changed.

[0087] Optional, such as Figure 5 As shown, the flow controller 440 includes a guide groove 510, a positioning pin 520, a flow regulating disk 530 and at least one first flow hole 540 on the plate-type permanent magnet 410, and the flow regulating disk 530 has at least one second flow hole 550;

[0088] The flow regulating disk 530 surrounds the vibration damper connecting rod 420 and forms a contact surface with the plate-shaped permanent magnet 410, and the contact surface extends to a predetermined position of the vibration damper connecting rod 420. The guide groove 510 is provided on the flow regulating disk 530, and the positioning pin 520 is provided on the vibration damper connecting rod 420, wherein the positioning pin 520 crosses the guide groove 510.

[0089] The flow regulating disk 530 can rotate around the shock absorber connecting rod 420 within a preset angle range through the guide groove 510 and the positioning pin 520.

[0090] Optional, such as Figure 6a 、 Figure 6b and Figure 6cAs shown, the mounting platform 130 includes a mounting base 610, a main shock absorber 620 and a shock absorber auxiliary support base 630, wherein the main shock absorber 620 is made of rubber, and a hole 640 for mounting the shock absorber auxiliary support base 630 is provided in the main shock absorber 620, and the hole 640 passes through the main shock absorber 620; the shock absorber auxiliary support base 630 is installed with a lower magnet 131 and a boss 631, wherein the boss 631 is used to support the spring 150; the main shock absorber 620 and the mounting base 610 are connected by a vulcanization process, and the shock absorber auxiliary support base 630 and the mounting base 610 are rigidly connected.

[0091] Based on the above-mentioned vibration isolation device, an intelligent vibration isolation system with automatic adjustment of stiffness and damping is designed using materials such as magnetorheological fluid, rubber, and springs. This vibration isolation system utilizes the properties of springs, magnetic suspension, and rubber as a vibration reduction structure, while also utilizing magnetorheological fluid as a damping vibration reduction structure. For variable stiffness, the current in the magnet coil can be adjusted based on the principle that like magnets repel and opposite magnets attract, thereby adjusting the repulsive force between the upper and lower magnets and changing the compression of the spring and rubber damper to achieve the purpose of adjusting the stiffness of the entire suspension system. For variable damping, the magnetorheological fluid flow area can be changed by adjusting the flow control disk, and combined with changing the current in the permanent magnet coil, multi-level adjustment of the vibration isolator damping can be achieved. This vibration isolation system can be used in a variety of industries and adapt to various work environments and working conditions, ensuring product reliability and improving product comfort.

[0092] Based on any of the above vibration isolation systems, such as Figure 7 As shown, an embodiment of the present application provides a vibration isolation method, and the execution process of the method includes the following steps:

[0093] S71, obtaining a first vibration signal corresponding to the working platform and a second vibration signal corresponding to the installation platform, and determining whether the current vibration isolation system has impact excitation based on the first vibration signal and the second vibration signal;

[0094] In the embodiment of the application, a first vibration signal corresponding to the working platform and a second vibration signal corresponding to the mounting platform can be obtained through a signal acquisition device on the vibration isolation system. Based on the obtained first vibration signal and second vibration signal, it can be determined whether the current vibration isolation system has impact excitation. Specifically: if the displacement of the first vibration signal changes by a greater amplitude than a first preset amplitude within a preset time length, or if the displacement of the second vibration signal changes by a greater amplitude than a second preset amplitude within a preset time length, then it is considered that the current vibration isolation system has impact excitation; otherwise, it is considered that no impact excitation exists.

[0095] If not, increase the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches a preset displacement;

[0096] In an embodiment of the present application, if the vibration isolation system is not subject to impact excitation, the stiffness of the vibration isolation system is minimized, thereby increasing the flexibility of the vibration isolation system, while ensuring that the vibration isolation system and the object being isolated are not damaged. To ensure that the vibration isolation system and the object being isolated are not damaged, the displacement corresponding to the first vibration signal should be less than a preset displacement. The preset displacement can be set to 95% or 98% of the maximum displacement of the working platform, etc. The specific ratio can be adjusted based on the safety margin requirements. The higher the safety margin, the smaller the ratio, and vice versa.

[0097] So how to reduce the stiffness of the vibration isolation system? In the embodiment of the present application, it is mainly achieved by adjusting the first coil and / or the second coil provided on the vibration isolation system, by gradually increasing the current of the first coil or the second coil alone, or by gradually increasing the current of the first coil and the second coil at the same time, so that the repulsive force between the upper magnet of the shock absorber and the lower magnet corresponding to the mounting platform is gradually increased, and then the spring compression between the shock absorber and the mounting platform is gradually reduced, so as to achieve the effect of reducing the stiffness of the entire vibration isolation system, until the displacement of the first vibration signal reaches the preset displacement. At this point, it indicates that the stiffness of the current vibration isolation system has reached the critical value. If the stiffness of the vibration isolation system is reduced again, there is a risk of damaging the vibration isolation system or the object being isolated, so the increase of the current of the first coil and / or the second coil should be stopped to prevent the stiffness of the vibration isolation system from further decreasing.

[0098] In order to ensure the vibration isolation effect of the vibration isolation system, when the displacement of the first vibration signal reaches the preset displacement, it is further detected whether the vibration isolation rate of the current vibration isolation system is greater than the preset vibration isolation rate. The specific calculation formula of the vibration isolation rate of the vibration isolation system is as follows:

[0099]

[0100] In formula (1), η is the vibration isolation rate, that is, the frame efficiency; x1, y1, and z1 represent the three components of the vibration amplitude of the isolated object connected to the mounting platform along the x, y, and z axes; x2, y2, and z2 represent the three components of the vibration amplitude generated by the excitation source connected to the working platform along the x, y, and z axes.

[0101] If the current vibration isolation system's isolation rate is less than or equal to the preset isolation rate, the current controller increases the permanent magnet coil current in the vibration absorber, leveraging the magnetorheological fluid properties in the vibration absorber to increase the vibration isolation system's damping until the isolation rate exceeds the preset rate. At this point, the system further checks to see if the vibration velocity corresponding to the second vibration signal is less than the preset velocity. If so, the increase in the permanent magnet coil current ceases. If the vibration velocity of the second vibration signal is not less than the preset velocity, the permanent magnet current continues to increase until the vibration velocity corresponding to the second vibration signal is less than the preset velocity, at which point the current controller ceases operation.

[0102] Through the above-mentioned vibration isolation method, utilizing the characteristics of springs, magnetic suspension, and magnetorheological fluid, not only the stiffness of the vibration isolation system can be adjusted, but also the damping of the vibration isolation system can be adjusted. High-frequency excitation and low-frequency excitation scenarios can be used, and noise can also be reduced.

[0103] S73: If yes, then according to the adjustment strategy corresponding to the magnitude relationship between the displacement corresponding to the first vibration signal and the preset displacement, adjust the current of the first coil and / or the second coil until the displacement corresponding to the first vibration signal reaches the preset displacement.

[0104] In an embodiment of the present application, if the vibration isolation system is subject to impact excitation, the displacement of the first vibration signal is detected to determine whether it is greater than a preset displacement. If it is less than the preset displacement, this indicates that the current vibration isolation system and the object being isolated can be safely used. At this point, according to the method described in step S72, the current in the first coil and / or the second coil is increased to increase the repulsive force between the upper and lower magnets until the displacement corresponding to the first vibration signal reaches the preset displacement. In this way, the rigidity of the vibration isolation system can be reduced while ensuring the safety of the vibration isolation system and the object being isolated, thereby ensuring the flexibility of the vibration isolation system.

[0105] When the displacement corresponding to the first vibration signal is greater than the preset displacement, it indicates that the stiffness value of the current vibration isolation system is too small, and the current impact excitation may cause damage to the vibration isolation system and the object being isolated. At this time, the current of the first coil and / or the second coil is adjusted by the current controller, such as gradually reducing the current of the first coil and / or the second coil, thereby reducing the like-charge repulsion between the upper magnet and the lower magnet, or changing the direction of the first coil or the second coil to cause opposite-charge attraction between the upper magnet and the lower magnet, thereby gradually increasing the spring compression between the shock absorber and the mounting platform, thereby increasing the stiffness of the entire vibration isolation system, until the displacement of the first vibration signal reaches the preset displacement.

[0106] Similar to S72, in order to ensure the vibration isolation effect of the vibration isolation system, when the displacement of the first vibration signal reaches the preset displacement, further, it is detected whether the vibration isolation rate of the current vibration isolation system is greater than the preset vibration isolation rate, wherein the specific calculation formula of the vibration isolation rate of the vibration isolation system refers to formula (1). If the vibration isolation rate of the current vibration isolation system is less than or equal to the preset vibration isolation rate, the permanent magnet coil current in the shock absorber is increased through the current controller, and the magnetorheological fluid characteristics in the shock absorber are used to increase the damping size of the vibration isolation system until the vibration isolation rate is greater than the preset vibration isolation rate. At this time, it is further detected whether the vibration speed corresponding to the second vibration signal is less than the preset speed; if it is less than the preset speed, the increase of the permanent magnet coil current is stopped; if the vibration speed of the second vibration signal is not less than the preset speed, the permanent magnet current is continued to be increased until the vibration speed corresponding to the second vibration signal is less than the preset speed, and the current controller stops the action.

[0107] Through the above-mentioned vibration isolation method, an intelligent vibration isolation system capable of automatically adjusting stiffness and damping is designed based on materials such as magnetorheological fluid, rubber, and springs. This vibration isolation system uses rubber, springs, and magnetic suspension as auxiliary vibration reduction structures, while also utilizing magnetorheological fluid as a damping vibration reduction structure. For variable stiffness, the current in the magnet coil can be adjusted based on the principle that like magnets repel and opposite magnets attract, thereby adjusting the repulsive force between the upper and lower magnets and varying the compression of the spring and rubber damper to adjust the stiffness of the entire suspension system and achieve a vibration reduction effect. For variable damping, the magnetorheological fluid flow area can be changed by adjusting the flow control disk, and this is combined with changing the current in the permanent magnet coil to achieve multi-level adjustment of the vibration isolator damping. This vibration isolation system can be used in a variety of industries, adapting to various work environments and working conditions, ensuring product reliability and improving product comfort.

[0108] Based on the same inventive concept, the present application also provides a vibration isolation device, such as Figure 8 FIG. 1 is a schematic diagram of the structure of a vibration isolation device, which specifically includes:

[0109] A judgment module 81 is configured to obtain a first vibration signal corresponding to the working platform and a second vibration signal corresponding to the installation platform, and determine whether there is impact excitation in the current vibration isolation system based on the first vibration signal and the second vibration signal;

[0110] The first vibration isolation module 82 is configured to increase the current of the first coil and / or the second coil if there is no impact excitation in the current vibration isolation system, so as to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches a preset displacement;

[0111] The second vibration isolation module 83 is used to adjust the current of the first coil and / or the second coil according to the adjustment strategy corresponding to the size relationship between the displacement corresponding to the first vibration signal and the preset displacement if there is impact excitation in the current vibration isolation system, until the displacement corresponding to the first vibration signal reaches the preset displacement.

[0112] In a possible embodiment, the second vibration isolation module 83 is specifically used to:

[0113] When the displacement corresponding to the first vibration signal is less than a preset displacement, increasing the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement;

[0114] When the displacement corresponding to the first vibration signal is greater than a preset displacement, the current of the first coil and / or the second coil is adjusted to reduce the like-pole repulsion or opposite-pole attraction between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement.

[0115] In a possible embodiment, the vibration isolation system further includes:

[0116] A detection module, configured to detect whether a vibration isolation rate of the vibration isolation system is greater than a preset vibration isolation rate;

[0117] The third vibration isolation module is configured to increase the permanent magnet coil current in the vibration absorber to increase the damping of the vibration isolation system if the vibration isolation rate of the vibration isolation system is less than or equal to the preset vibration isolation rate, until the vibration isolation rate is greater than the preset vibration isolation rate, and then detect whether the vibration speed corresponding to the second vibration signal is less than the preset speed; if not, continue to increase the permanent magnet current until the vibration speed corresponding to the second vibration signal is less than the preset speed.

[0118] Based on the above-mentioned vibration isolation device, an intelligent vibration isolation system with automatic adjustment of stiffness and damping is designed using materials such as magnetorheological fluid, rubber, and springs. This vibration isolation system uses rubber, springs, and magnetic suspension as auxiliary vibration reduction structures, while also utilizing magnetorheological fluid as a damping vibration reduction structure. For variable stiffness, the current in the magnet coil can be adjusted based on the principle that like magnets repel and opposite magnets attract, thereby adjusting the repulsive force between the upper and lower magnets and changing the compression of the spring and rubber shock absorber to adjust the stiffness of the entire suspension system and achieve a vibration reduction effect. For variable damping, the magnetorheological fluid flow area can be changed by adjusting the flow control disk, and combined with changing the current in the permanent magnet coil, multi-level adjustment of the vibration isolator damping can be achieved. This vibration isolation system can be used in a variety of industries and adapt to a variety of work environments and working conditions, ensuring product reliability and improving product comfort.

[0119] Based on the same inventive concept, an electronic device is also provided in the embodiment of the present application, and the electronic device can realize the functions of the aforementioned vibration isolation method and device, referring to Figure 9 , the electronic device includes:

[0120] At least one processor 91, and a memory 92 connected to the at least one processor 91. The specific connection medium between the processor 91 and the memory 92 is not limited in the embodiment of the present application. Figure 9 In the example, the processor 91 and the memory 92 are connected via a bus 90. Figure 9 The bus 90 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 9 The diagram is represented by only one thick line, but this does not mean that there is only one bus or one type of bus. Alternatively, the processor 91 may also be referred to as a controller, without limitation to the name.

[0121] In the embodiment of the present application, the memory 92 stores instructions that can be executed by at least one processor 91. The at least one processor 91 can execute the vibration isolation method discussed above by executing the instructions stored in the memory 92. The processor 91 can implement Figure 8 The functions of each module in the device shown.

[0122] Among them, the processor 91 is the control center of the device, which can use various interfaces and lines to connect the various parts of the entire control device, and monitor the device as a whole by running or executing instructions stored in the memory 92 and calling data stored in the memory 92, the various functions of the device and processing data.

[0123] In one possible design, processor 91 may include one or more processing units. Processor 91 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 91. In some embodiments, processor 91 and memory 92 may be implemented on the same chip. In some embodiments, they may also be implemented on separate chips.

[0124] The processor 91 can be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the vibration isolation method disclosed in the embodiments of this application can be directly implemented as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0125] The memory 92 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules. The memory 92 may include at least one type of storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory, a random access memory (RAM), a static random access memory (SRAM), a programmable read-only memory (PROM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 92 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 92 in the embodiment of the present application can also be a circuit or any other device that can realize a storage function, for storing program instructions and / or data.

[0126] By programming the processor 91, the code corresponding to the vibration isolation method described in the above embodiment can be fixed into the chip, so that the chip can execute the code when running. Figure 7 The steps of the vibration isolation method of the embodiment shown are as follows: How to design and program the processor 91 is a technique well known to those skilled in the art and will not be described in detail here.

[0127] Based on the same inventive concept, embodiments of the present application provide a computer-readable storage medium, a computer program product comprising: computer program code, which, when executed on a computer, causes the computer to perform any of the vibration isolation methods discussed above. Because the principles underlying the problems solved by the computer-readable storage medium are similar to those of the vibration isolation methods, the implementation of the computer-readable storage medium can be referenced to the implementation of the methods, and any repetitions will not be repeated.

[0128] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0129] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable vibration isolation device to produce a machine, so that the instructions executed by the processor of the computer or other programmable vibration isolation device generate instructions for implementing the process in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0130] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable vibration isolation device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device that implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0131] These computer program instructions may also be loaded onto a computer or other programmable vibration isolation device so that a series of user-operated steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0132] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A vibration isolation system, characterized in that: It includes a working platform, a vibration absorber, a mounting platform, and a sealing device, wherein the vibration absorber is mounted above the mounting platform, and the working platform is above the vibration absorber, and the sealing device is used to fix and seal the vibration absorber; The vibration absorber is provided with N upper magnets on a surface near the mounting platform, and the mounting platform is provided with N lower magnets opposite to the N upper magnets on a surface near the vibration absorber, and the corresponding upper magnets and lower magnets are connected by springs, wherein N is an integer greater than or equal to 1; The N upper magnet surfaces respectively surround the first coil, and each first coil is connected to a current controller, and / or the N lower magnet surfaces respectively surround the second coil, and each second coil is connected to the current controller, wherein the current controller is used to adjust the magnitude and direction of the current of the first coil and / or the second coil; The vibration absorber includes a plate-type permanent magnet, a vibration absorber connecting rod, and an upper magnet mounting platform; the plate-type permanent magnet and the upper magnet mounting platform surround the vibration absorber connecting rod, and the plate-type permanent magnet is above the upper magnet mounting platform; A first cavity is formed between the plate-shaped permanent magnet and the sealing device, and a second cavity is formed between the upper magnet mounting platform and the plate-shaped permanent magnet; The first cavity contains a magnetorheological fluid and a flow controller, wherein the flow controller is used to control the flow rate of the magnetorheological fluid flowing into the second cavity; A permanent magnet coil is provided on the plate-shaped permanent magnet, and the damping of the magnetorheological fluid can be changed by changing the current of the permanent magnet coil.

2. The vibration isolation system according to claim 1, wherein: The working platform is provided with a first acceleration sensor, the mounting platform is provided with a second acceleration sensor and a signal acquisition instrument, and the first acceleration sensor and the second acceleration sensor are respectively connected to the signal acquisition instrument; The first acceleration sensor is used to obtain a first vibration signal from an excitation source and transmit the first vibration signal to the signal acquisition instrument, wherein the first vibration signal includes a displacement; The second acceleration sensor is used to obtain a second vibration signal of the vibration-isolated object and transmit the second vibration signal to the signal acquisition instrument, wherein the second vibration signal includes a vibration velocity; The signal acquisition device is used to receive the first vibration signal and the second vibration and speed signal.

3. The vibration isolation system according to claim 1, wherein: Sealing rings are provided between the contact surfaces of the plate-shaped permanent magnet and the upper magnet mounting platform and the sealing device.

4. The vibration isolation system according to claim 1, wherein: The flow controller includes a guide groove, a positioning pin, a flow regulating disk and at least one first flow hole on the plate-shaped permanent magnet, and the flow regulating disk has at least one second flow hole; The flow regulating disk surrounds the vibration damper connecting rod and has a contact surface with the plate-shaped permanent magnet, and the contact surface extends to a preset position of the vibration damper connecting rod; The guide groove is provided on the flow regulating disk, and the positioning pin is provided on the shock absorber connecting rod, wherein the positioning pin crosses the guide groove; The flow regulating disk can rotate around the shock absorber connecting rod within a preset angle range through the guide groove and the positioning pin.

5. The vibration isolation system according to claim 1, wherein: The mounting platform includes a shock absorber base, a shock absorber auxiliary support base and a rubber block; The shock absorber auxiliary support seat is located above the shock absorber base, and the side box of the shock absorber base is connected to the shock absorber auxiliary support seat through the rubber block; The lower magnet and the boss are mounted on the shock absorber auxiliary support seat, wherein the boss is used to support the spring.

6. A vibration isolation method, based on any one of the vibration isolation systems of claims 1 to 5, characterized in that: The method comprises: Obtaining a first vibration signal corresponding to the working platform and a second vibration signal corresponding to the installation platform, and determining whether there is impact excitation in the current vibration isolation system based on the first vibration signal and the second vibration signal; If not, increasing the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches a preset displacement; If so, the current of the first coil and / or the second coil is adjusted according to the adjustment strategy corresponding to the magnitude relationship between the displacement corresponding to the first vibration signal and the preset displacement until the displacement corresponding to the first vibration signal reaches the preset displacement.

7. The method according to claim 6, wherein The adjusting strategy corresponding to the magnitude relationship between the displacement corresponding to the first vibration signal and the preset displacement, adjusting the current of the first coil and / or the second coil until the displacement corresponding to the first vibration signal reaches the preset displacement, includes: When the displacement corresponding to the first vibration signal is less than a preset displacement, increasing the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement; When the displacement corresponding to the first vibration signal is greater than a preset displacement, the current of the first coil and / or the second coil is adjusted to reduce the like-pole repulsion or opposite-pole attraction between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement.

8. The method according to claim 6 or 7, wherein: After the displacement corresponding to the first vibration signal reaches a preset displacement, the method further includes: Detecting whether the vibration isolation rate of the vibration isolation system is greater than a preset vibration isolation rate; If not, increasing the permanent magnet coil current in the vibration absorber to increase the damping of the vibration isolation system until the vibration isolation rate is greater than the preset vibration isolation rate, and detecting whether the vibration speed corresponding to the second vibration signal is less than a preset speed; If it is not less than the preset speed, continue to increase the permanent magnet current until the vibration corresponding to the second vibration signal is less than the preset speed.

9. A vibration isolation device, based on any one of the vibration isolation systems of claims 1 to 5, characterized in that: The device comprises: a judgment module, configured to obtain a first vibration signal corresponding to the working platform and a second vibration signal corresponding to the installation platform, and judge whether there is impact excitation in the current vibration isolation system based on the first vibration signal and the second vibration signal; a first vibration isolation module, configured to increase the current of the first coil and / or the second coil if no impact excitation exists in the current vibration isolation system, so as to increase the repulsive force of like charges between the upper magnet and the lower magnet, until the displacement corresponding to the first vibration signal reaches a preset displacement; The second vibration isolation module is used to adjust the current of the first coil and / or the second coil according to the adjustment strategy corresponding to the size relationship between the displacement corresponding to the first vibration signal and the preset displacement if there is impact excitation in the current vibration isolation system, until the displacement corresponding to the first vibration signal reaches the preset displacement.

10. The device according to claim 9, wherein The second vibration isolation module is specifically used for: When the displacement corresponding to the first vibration signal is less than a preset displacement, increasing the current of the first coil and / or the second coil to increase the repulsive force between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement; When the displacement corresponding to the first vibration signal is greater than a preset displacement, the current of the first coil and / or the second coil is adjusted to reduce the like-pole repulsion or opposite-pole attraction between the upper magnet and the lower magnet until the displacement corresponding to the first vibration signal reaches the preset displacement.

11. The device according to claim 9 or 10, characterized in that The vibration isolation system further comprises: A detection module, configured to detect whether a vibration isolation rate of the vibration isolation system is greater than a preset vibration isolation rate; The third vibration isolation module is configured to increase the permanent magnet coil current in the vibration absorber to increase the damping of the vibration isolation system if the vibration isolation rate of the vibration isolation system is less than or equal to the preset vibration isolation rate, until the vibration isolation rate is greater than the preset vibration isolation rate, and then detect whether the vibration speed corresponding to the second vibration signal is less than the preset speed; if not, continue to increase the permanent magnet current until the vibration speed corresponding to the second vibration signal is less than the preset speed.

12. An electronic device, characterized in that: include: a memory for storing program instructions; A processor is configured to call the program instructions stored in the memory and execute the steps of the method according to any one of claims 6 to 8 according to the obtained program instructions.

13. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a computer, the computer is caused to perform the method according to any one of claims 6 to 8.

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