CN115370696A - Vibration control TMD device, method and system based on magnetorheological elastomer - Google Patents
Vibration control TMD device, method and system based on magnetorheological elastomer Download PDFInfo
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- CN115370696A CN115370696A CN202211005180.3A CN202211005180A CN115370696A CN 115370696 A CN115370696 A CN 115370696A CN 202211005180 A CN202211005180 A CN 202211005180A CN 115370696 A CN115370696 A CN 115370696A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 56
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- 230000005284 excitation Effects 0.000 claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims description 21
- 230000004044 response Effects 0.000 claims description 13
- 239000012791 sliding layer Substances 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 8
- 230000007704 transition Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 5
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/066—Variable stiffness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
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Abstract
The invention provides a device, a method and a system for controlling TMD (transition temperature modulation) based on vibration of a magnetorheological elastomer. According to the vibration control TMD device, the magnetorheological elastomer is connected with the mass block and the fixed magnetizer, so that when the excitation coil in the mass block is supplied with currents of different magnitudes and the magnetic field intensity is changed, the shear modulus of the magnetorheological elastomer is changed, the rigidity of the magnetorheological elastomer is further changed, and the rigidity of the vibration control TMD is further adjusted at any time according to the frequency change of the cantilever plate lattice structure.
Description
Technical Field
The invention belongs to the technical field of vibration reduction devices, and particularly belongs to a vibration control TMD device, method and system based on a magnetorheological elastomer.
Background
The cantilever plate lattice structure is widely applied to the engineering fields of aviation, aerospace, ships, civil construction and the like. In practical application, the cantilever plate lattice structure is subjected to the external excitation of the surrounding environment complex to generate structural fatigue and vibration, even serious radiation noise is accompanied, and the structure and the life of human beings are adversely affected, so that the vibration control of the cantilever plate lattice structure is very important.
Tuned mass dampers, i.e., TMDs, are widely used for structural vibration damping because a conventional TMD will reduce the vibration response of a cantilever plate lattice structure at a certain order of frequency of the cantilever plate lattice structure only when the frequency of vibration of the conventional TMD is consistent with that order of frequency. After the cantilever plate lattice structure is used for a long time, the natural vibration frequency of the cantilever plate lattice structure can generate slow change, at the moment, the vibration frequency of the traditional TMD is not consistent with the frequency of the cantilever plate lattice structure any more, when the cantilever plate lattice structure resonates, the capacity of the traditional TMD for absorbing the energy of the structure is weakened or even eliminated, and the problem of reducing the structural vibration cannot be achieved.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention provides a vibration control TMD device based on a magnetorheological elastomer, which is characterized in that the magnetorheological elastomer is connected with a mass block and a fixed magnetizer, so that when excitation coils in the mass block are supplied with currents of different magnitudes and the magnetic field intensity is changed, the shear modulus of the magnetorheological elastomer is changed, the rigidity of the magnetorheological elastomer is further changed, and the rigidity of the vibration control TMD is adjusted at any time according to the frequency change of a cantilever plate lattice structure.
The second purpose of the invention is to provide a vibration control TMD method based on the magnetorheological elastomer, the method adopts semi-active control based on short-time Fourier transform (STFT), can track the frequency change of the grid structure of the cantilever plate in real time, adjusts the frequency of the vibration control TMD, and has strong controllability.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
in a first aspect, the invention discloses a vibration control TMD device based on a magnetorheological elastomer, which comprises a shell, the magnetorheological elastomer and a mass block, wherein the mass block is arranged in the shell, springs connected with the shell are arranged on two sides of the mass block, a fixed magnetizer is arranged between an upper flange and a lower flange of the mass block, and the magnetorheological elastomer is arranged between the fixed magnetizer and the mass block.
The invention realizes variable frequency control of TMD vibration control by arranging the magnetorheological elastomer and changing the rigidity of the magnetorheological elastomer, thereby realizing the vibration damping effect.
Further, the mass block comprises an I-shaped magnetizer and an excitation coil, and the excitation coil is wound on the web of the I-shaped magnetizer.
Specifically, a gap exists between the magnetorheological elastomer and the fixed magnetizer as well as the mass block so as to provide a space required by deformation of the magnetorheological elastomer.
According to the invention, after the excitation coil is electrified, a magnetic field is generated nearby, the magnetic field forms a magnetic circuit through the I-shaped magnetizer, the fixed magnetizer and the magnetorheological elastomer respectively, the size of the magnetic field intensity generated by the excitation coil is changed by introducing currents with different sizes into the excitation coil, and the shear modulus of the magnetorheological elastomer is changed so as to change the rigidity of the magnetorheological elastomer.
Further, the vibration control TMD device further comprises an acceleration sensor, and the acceleration sensor is fixedly arranged on the side edge of the mass block.
Furthermore, a sliding layer is arranged between the shell and the mass block, the mass block is movably connected to the sliding layer, and the sliding layer is fixedly connected to the shell.
Further, the inner wall of casing is provided with the connecting rod, fixed magnetizer passes through the connecting rod with casing fixed connection.
Furthermore, a connecting plate is arranged at the bottom end of the outer portion of the shell, and a plurality of connecting holes are formed in the connecting plate and used for being connected with the cantilever plate grid structure.
In a second aspect, the present invention discloses a vibration control method using a vibration control TMD device, comprising the steps of:
s1, arranging a vibration control TMD device on a vibrating cantilever plate lattice structure, and collecting acceleration response of the cantilever plate lattice structure;
s2, identifying the frequency of the acceleration response based on short-time Fourier transform, and determining the actual vibration frequency of the cantilever plate grid structure;
s3, calculating the rigidity required by the vibration control TMD device according to the actual vibration frequency;
and S4, adjusting the rigidity of a magnetorheological elastomer in the vibration control TMD device to be matched with the required rigidity by adjusting the input current of the vibration control TMD device, thereby realizing that the natural frequency of the vibration control TMD device is consistent with the vibration frequency of the cantilever plate lattice structure.
In the vibration control method of the present invention, the basic principle of the short-time fourier transform is as follows:
time-slicing through the signal x τ (t) is multiplied by a window function h (t- τ) to calculate:
x τ (t)＝x(t)h(t-τ)
where τ is the fixed time, t is the running time, the window function uses a hamming window, and the fourier transform of the modified signal is calculated as:
the power spectral density at time t is:
thus, the instantaneous frequency at time t is found as follows:
in a third aspect, the invention discloses a vibration control TMD system based on a magnetorheological elastomer, and the method for controlling the vibration comprises the following steps:
an acceleration collection module: arranging a vibration control TMD device on a vibrating cantilever plate lattice structure, and collecting acceleration response of the cantilever plate lattice structure;
a vibration frequency determination module: identifying the frequency of the acceleration response based on short-time Fourier transform, and determining the actual vibration frequency of the cantilever plate grid structure;
a required stiffness calculation module: calculating the rigidity required by the vibration control TMD device according to the actual vibration frequency;
a current regulation module: and adjusting the rigidity of the magneto-rheological elastomer in the vibration control TMD device to be matched with the required rigidity by adjusting the input current of the vibration control TMD device, thereby realizing that the natural frequency of the vibration control TMD device is consistent with the vibration frequency of the cantilever plate lattice structure.
In a fourth aspect, the invention discloses a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the vibration control method according to the second aspect.
In a fifth aspect, the invention discloses a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the vibration control method according to the second aspect when executing the program.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the magnetorheological elastomer is arranged in the vibration control TMD, the rigidity of the magnetorheological elastomer is changed by adjusting the external current of the excitation coil by utilizing the characteristic that the shear modulus of the magnetorheological elastomer can be changed along with the external magnetic field intensity, so that the rigidity of the vibration control TMD is changed, the vibration control TMD frequency conversion control is realized, and the vibration control TMD can play a good vibration damping role when the frequency of the cantilever plate lattice structure is changed;
secondly, the vibration control method adopting the vibration control TMD device adopts a frequency identification method and semi-active control based on short-time Fourier transform (STFT), tracks the frequency change of the lattice structure of the cantilever plate in real time, adjusts the rigidity of the vibration control TMD, and has strong controllability.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic plane structure diagram of a vibration control TMD device based on a magnetorheological elastomer according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an overall structure of a magnetorheological elastomer based vibration control TMD apparatus according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating an installation of a vibration control TMD device and a cantilever plate lattice structure according to an embodiment of the present invention;
FIG. 4 is a flowchart of a vibration control method using a TMD device according to an embodiment of the present invention;
fig. 5 is a flowchart of a short-time fourier transform semi-active control in the control method according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of a magnetorheological elastomer based vibration control TMD system according to an embodiment of the present invention;
fig. 7 is a schematic flowchart of a computer device according to an embodiment of the present invention.
Description of the drawings:
1-shell, 2-I-shaped magnetizer, 3-connecting rod, 4-magneto-rheological elastomer; 5, connecting a plate; 6-a sliding layer; 7-a spring; 8-a field coil; 9-fixing a magnetizer; 10-an acceleration sensor; 11-a mass block; 12-cantilever plate lattice structure; 13-connecting hole.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to more clearly explain the technical solution of the present invention, the following description is made in the form of specific embodiments.
Referring to fig. 1, the invention discloses a vibration control TMD device based on a magnetorheological elastomer, which comprises a housing 1, a magnetorheological elastomer 4 and a mass block 11, wherein the mass block 11 is arranged inside the housing 1, springs 7 connected with the housing 1 are arranged on two sides of the mass block 11, a fixed magnetizer 9 is arranged between an upper flange and a lower flange of the mass block 11, and the magnetorheological elastomer 4 is arranged between the fixed magnetizer 9 and the mass block 11.
According to the invention, the magnetorheological elastomer 4 is arranged, and the rigidity of the magnetorheological elastomer 4 is changed to realize variable frequency control of the TMD, so that the vibration damping effect is realized.
Specifically, referring to fig. 1 and 2, the structural installation process of the entire vibration control TMD device is as follows:
the vibration control TMD device based on the magneto-rheological elastomer comprises a shell 1, the magneto-rheological elastomer 4 and a mass block 11, wherein the mass block 11 is arranged inside the shell 1, the mass block 1 comprises an I-shaped magnetizer 2 and an excitation coil 8, the excitation coil 8 is wound on a web plate of the I-shaped magnetizer 2, springs 7 connected with the shell 1 are arranged on two sides of the I-shaped magnetizer 2, a fixed magnetizer 9 is arranged between an upper flange and a lower flange of the I-shaped magnetizer 2, the magneto-rheological elastomer 4 is arranged between the fixed magnetizer 9 and the I-shaped magnetizer 2, gaps exist among the magneto-rheological elastomer 4, the I-shaped magnetizer 2 and the fixed magnetizer 9, and a space required by the magneto-rheological elastomer 4 when the magneto-rheological elastomer 4 deforms can be provided.
The invention realizes that the TMD can be controlled in a variable frequency manner by arranging the magnetorheological elastomer 4 and changing the rigidity of the magnetorheological elastomer 4, thereby realizing the vibration damping effect; after the excitation coil 8 is electrified, a magnetic field is generated nearby, the magnetic field forms magnetic circuits through the I-shaped magnetizer 2, the fixed magnetizer 9 and the magnetorheological elastomer 4 respectively, the intensity of the magnetic field generated by the excitation coil 8 is changed in a mode of introducing currents with different magnitudes into the excitation coil 8, and the shear modulus of the magnetorheological elastomer 4 is changed so as to change the rigidity of the magnetorheological elastomer 4.
The vibration control TMD device further comprises an acceleration sensor 10, wherein the acceleration sensor 10 is fixedly arranged on the side edge of the I-shaped magnetizer 2 and is connected with the I-shaped magnetizer 2 through threads.
A sliding layer 6 is arranged between the shell 1 and the mass block 11, specifically, the sliding layer 6 is arranged between the i-shaped magnetizer 2 and the shell 1, and the i-shaped magnetizer 2 is movably connected to the sliding layer 6, so that when the cantilever plate lattice structure 12 vibrates, the i-shaped magnetizer 2 can move and keep vibrating at the same frequency as the cantilever plate lattice structure 12; the sliding layer 2 is fixedly connected to the shell.
The inner wall of the shell 1 is provided with a connecting rod 3, and the fixed magnetizer 9 is fixedly connected with the shell 1 through the connecting rod 3.
Referring to fig. 3, the bottom end of the exterior of the housing 1 is provided with a connecting plate 5, the connecting plate 5 is provided with a plurality of connecting holes 13 for connecting with the cantilever plate lattice structure 12, specifically, the connecting plate 5 is connected with the cantilever plate lattice structure 12 through the connecting holes 13, and the connecting holes 13 are connected through bolts.
In addition, the present invention also discloses a vibration control method using the above mentioned vibration control TMD device, as shown in fig. 4, including the following steps:
s1, arranging a vibration control TMD device on a vibrating cantilever plate lattice structure, and collecting acceleration response of the cantilever plate lattice structure;
s2, identifying the frequency of the acceleration response based on short-time Fourier transform, and determining the actual vibration frequency of the cantilever plate grid structure;
s3, calculating the rigidity required by the vibration control TMD device according to the actual vibration frequency;
and S4, adjusting the rigidity of a magnetorheological elastomer in the vibration control TMD device to be matched with the required rigidity by adjusting the input current of the vibration control TMD device, thereby realizing that the natural frequency of the vibration control TMD device is consistent with the vibration frequency of the cantilever plate lattice structure.
The vibration control method adopting the vibration control TMD device adopts a frequency identification method and semi-active control based on short-time Fourier transform (STFT), tracks the frequency change of the lattice structure of the cantilever plate in real time, adjusts the rigidity of the vibration control TMD and has strong controllability.
Referring to fig. 5, in the vibration control method of the present invention, the basic principle of the short-time fourier transform is as follows:
time-slicing through the signal x τ (t) is multiplied by a window function h (t- τ) to calculate:
x τ (t)＝x(t)h(t-τ)
where τ is the fixed time, t is the running time, the window function uses a hamming window, and the fourier transform of the modified signal is calculated as:
the power spectral density at time t is:
thus, the instantaneous frequency at time t is found as follows:
referring to fig. 6, a schematic diagram of a magnetorheological elastomer based vibration control TMD system according to an embodiment of the present invention is shown, which includes:
an acceleration collection module: arranging a vibration control TMD device on a vibrating cantilever plate grid structure, and collecting acceleration response of the cantilever plate grid structure;
a vibration frequency determination module: identifying the frequency of the acceleration response based on short-time Fourier transform, and determining the actual vibration frequency of the cantilever plate grid structure;
a required stiffness calculation module: calculating the rigidity required by the vibration control TMD device according to the actual vibration frequency;
a current regulation module: and adjusting the rigidity of a magnetorheological elastomer in the vibration control TMD device to be matched with the required rigidity by adjusting the input current of the vibration control TMD device, thereby realizing the consistency of the natural frequency of the vibration control TMD device and the vibration frequency of the cantilever plate lattice structure.
The system mainly comprises the four modules, and the aim of simultaneously mounting the same file system and realizing parallel operation can be well realized through the construction of the system.
In specific implementation, the above modules may be implemented as independent entities, or may be combined arbitrarily to be implemented as the same or several entities, and specific implementation of the above units may refer to the foregoing method embodiments, which are not described herein again.
Fig. 7 is a schematic structural diagram of a computer device disclosed in the present invention. Referring to fig. 7, the computer device 400 includes at least a memory 402 and a processor 401; the memory 402 is connected to the processor through a communication bus 403 for storing computer instructions executable by the processor 401, and the processor 301 is configured to read the computer instructions from the memory 402 to implement the steps of the vibration control method according to any of the above embodiments.
For the above-mentioned apparatus embodiments, since they basically correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement without inventive effort.
Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal magnetic disks or removable disks), magneto-optical disks, and CD ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.
Finally, it should be noted that: while this specification contains many specific implementation details, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features specific to particular embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. In another aspect, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.
Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system modules and components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.
Thus, particular embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. Further, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some implementations, multitasking and parallel processing may be advantageous.
The above description is meant to be illustrative of the preferred embodiments of the present disclosure and not to be taken as limiting the disclosure, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.
Claims (10)
1. The TMD device is characterized by comprising a shell, a magnetorheological elastomer and a mass block, wherein the mass block is arranged inside the shell, springs connected with the shell are arranged on two sides of the mass block, a fixed magnetizer is arranged between an upper flange and a lower flange of the mass block, and the magnetorheological elastomer is arranged between the fixed magnetizer and the mass block.
2. The vibration control TMD device of claim 1, wherein the mass comprises an i-shaped magnetic conductor and an excitation coil wound around the i-shaped magnetic conductor web.
3. The vibration control TMD device of claim 1, further comprising an acceleration sensor fixedly disposed at a side of the mass.
4. The vibration control TMD device of claim 1, wherein a sliding layer is disposed between the housing and the mass, the mass movably connected to the sliding layer, the sliding layer fixedly connected to the housing.
5. The TMD device according to claim 1, wherein the inner wall of the housing is provided with a connecting rod, and the fixed magnetizer is fixedly connected with the housing through the connecting rod.
6. The vibration control TMD device of claim 1, wherein the housing has a connection plate at an outer bottom end, the connection plate having a plurality of connection holes for connection with a cantilever plate grid structure.
7. A vibration control TMD method employing the vibration control TMD apparatus according to any one of claims 1 to 6, comprising the steps of:
s1, arranging a vibration control TMD device on a vibrating cantilever plate lattice structure, and collecting acceleration response of the cantilever plate lattice structure;
s2, identifying the frequency of the acceleration response based on short-time Fourier transform, and determining the actual vibration frequency of the cantilever plate grid structure;
s3, calculating the rigidity required by the vibration control TMD device according to the actual vibration frequency;
and S4, adjusting the rigidity of a magnetorheological elastomer in the vibration control TMD device to be matched with the required rigidity by adjusting the input current of the vibration control TMD device, thereby realizing that the natural frequency of the vibration control TMD device is consistent with the vibration frequency of the cantilever plate lattice structure.
8. A magnetorheological elastomer based vibration control TMD system, using the method of claim 7, comprising:
an acceleration collection module: arranging a vibration control TMD device on a vibrating cantilever plate lattice structure, and collecting acceleration response of the cantilever plate lattice structure;
a vibration frequency determination module: identifying the frequency of the acceleration response based on short-time Fourier transform, and determining the actual vibration frequency of the cantilever plate grid structure;
a required stiffness calculation module: calculating the rigidity required by the vibration control TMD device according to the actual vibration frequency;
a current regulation module: and adjusting the rigidity of the magneto-rheological elastomer in the vibration control TMD device to be matched with the required rigidity by adjusting the input current of the vibration control TMD device, thereby realizing that the natural frequency of the vibration control TMD device is consistent with the vibration frequency of the cantilever plate lattice structure.
9. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed performs the steps of the vibration control TMD method of claim 7.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the vibration control TMD method of claim 7 are implemented when the program is executed by the processor.
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