CN114151497A - Vibration reduction structure, device, control method of vibration reduction structure, processor and storage medium - Google Patents
Vibration reduction structure, device, control method of vibration reduction structure, processor and storage medium Download PDFInfo
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- CN114151497A CN114151497A CN202111465845.4A CN202111465845A CN114151497A CN 114151497 A CN114151497 A CN 114151497A CN 202111465845 A CN202111465845 A CN 202111465845A CN 114151497 A CN114151497 A CN 114151497A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000009467 reduction Effects 0.000 title claims description 26
- 238000013016 damping Methods 0.000 claims abstract description 72
- 230000005284 excitation Effects 0.000 claims abstract description 36
- 230000004044 response Effects 0.000 claims abstract description 7
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 10
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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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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- General Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vibration damping structure, equipment, a control method of the vibration damping structure, a processor and a storage medium, belongs to the technical field of vibration, and aims to solve the problem that when the existing equipment generates vibration during operation, a vibration damping device cannot be adjusted according to the vibration frequency of the equipment, and the vibration damping effect is limited. The invention provides a vibration damping structure, comprising: the damping body, the damping body is formed with confined well cavity, be equipped with magnetorheological suspensions in the well cavity, one side of well cavity is equipped with excitation coil, when excitation coil circular telegram, through control excitation coil's current regulation the magnetic field of excitation coil makes the natural frequency of the damping body changes, and then reduces the vibration response of damping structure. The invention changes the natural frequency of the vibration damping body by changing the current of the exciting coil, can adjust the current according to the amplitude of the vibration source of the actual equipment to change the natural frequency of the vibration damping body, reduces the noise of the equipment and simultaneously can avoid the occurrence of resonance.
Description
Technical Field
The invention relates to the technical field of vibration, in particular to a vibration reduction structure, equipment, a control method of the vibration reduction structure, the equipment, a processor and a storage medium.
Background
Most of the existing equipment adopts a shock absorber or a damper to reduce the vibration of the equipment, the vibration frequency of the equipment can change in the operation process, and the vibration reduction devices such as the shock absorber or the damper can not be adjusted according to the vibration frequency of the equipment, so that the vibration reduction effect is limited.
Disclosure of Invention
In view of the above, the invention discloses a vibration reduction structure, equipment, a control method thereof, a processor and a storage medium, which are used for solving the problem that when the existing equipment generates vibration during operation, a vibration reduction device cannot be adjusted according to the vibration frequency of the equipment, so that the vibration reduction effect is limited.
In order to achieve the above object, the invention adopts the following technical scheme:
the first aspect of the present invention discloses a vibration damping structure, including: the damping body, the damping body is formed with confined well cavity, be equipped with magnetorheological suspensions in the well cavity, one side of well cavity is equipped with excitation coil, when excitation coil circular telegram, through control excitation coil's current regulation the magnetic field of excitation coil makes the natural frequency of the damping body changes, and then reduces the vibration response of damping structure.
Further optionally, the excitation coil is wound in a serpentine or rectangular manner at one side of the hollow cavity.
Further optionally, the vibration damping structure further comprises a vibration sensor disposed on the vibration damping body.
In a second aspect, the invention discloses an apparatus having a vibration source thereon, the apparatus comprising the vibration reduction structure of the first aspect, the vibration source transmitting vibration to the vibration reduction body.
Further optionally, the device is an air conditioner outdoor unit, and the vibration reduction body is of a metal plate structure and serves as a shell of the air conditioner outdoor unit.
A third aspect of the present invention discloses a method for controlling the apparatus of the second aspect, the apparatus being provided with a control system; the control method comprises the following steps: when the compressor starts to operate, vibration generated by the compressor is transmitted to the vibration reduction body through the pipeline, the vibration sensor can acquire the vibration frequency of the metal plate structure and feed the vibration frequency back to the control system, the control system analyzes the magnitude of the current vibration frequency and compares the magnitude of the current vibration frequency with the preset vibration frequency, and if the current vibration frequency of the vibration reduction body is smaller than the preset vibration frequency, the current state is kept unchanged; if the current vibration frequency of the vibration damping body is greater than or equal to the preset vibration frequency, the control system energizes the magnet exciting coil to generate a magnetic field.
Further optionally, after the control system energizes the excitation coil to generate a magnetic field, the current vibration frequency of the sheet metal structure is obtained, and whether the current of the excitation coil is adjusted is judged again according to the current vibration frequency of the sheet metal structure.
Further optionally, the determining whether to adjust the current of the excitation coil according to the current vibration frequency of the sheet metal structure includes: if the current vibration frequency is greater than or equal to a preset vibration frequency, controlling to increase the current of the magnet exciting coil until the vibration frequency is less than the preset vibration frequency; and if the current vibration frequency is smaller than the preset vibration frequency, maintaining the current magnitude of the current of the excitation coil unchanged.
A fourth aspect of the invention discloses a processor for executing a computer program which, when running, performs the control method of the third aspect.
A fifth aspect of the present invention discloses a storage medium, which is a non-transitory storage medium for storing a computer program, and the computer program executes the control method according to the third aspect when running.
Has the advantages that: the invention adjusts the viscosity of the magnetic rheological fluid by changing the current of the exciting coil, further changes the natural frequency of the vibration damping body, can adjust the current according to the amplitude of the vibration source of the actual equipment to change the natural frequency of the vibration damping body, reduces the noise of the equipment, and simultaneously can avoid the occurrence of resonance.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely exemplary embodiments of the present disclosure, and other drawings may be derived by those skilled in the art without inventive effort.
Fig. 1 shows a schematic view of a vibration damping structure of an embodiment of the present invention;
FIG. 2 shows a cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic view illustrating an outdoor unit of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for controlling an outdoor unit of an air conditioner according to an embodiment of the present invention.
Reference numerals:
1-a vibration damping body; 2-a field coil; 3-a vibration sensor; 5-a top cover; 6-a bottom plate; 7-a rear plate; 8-side plate; 9-a front plate; 11-hollow cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The vibration reduction element adopted by the existing equipment can not be adjusted according to the vibration frequency when the equipment runs, and the noise generated by the equipment in different running states is different, so that the noise of the equipment is higher in high-frequency vibration.
According to the invention, the current of the excitation coil of the vibration damper is adjusted according to the noise generated by the vibration of the equipment, so that the natural frequency of the vibration damper is adjusted according to different running states of the equipment, and the noise generated by the equipment is further reduced.
To further illustrate the technical solution of the present invention, the following specific examples are provided with reference to fig. 1 to 4.
Example 1
In the present embodiment, there is provided a vibration damping structure, as shown in fig. 1 and 2, including: the vibration damping body 1, the vibration damping body 1 is formed with confined cavity 11, is equipped with magnetorheological suspensions in the cavity 11, and one side of cavity 11 is equipped with excitation coil 2, and when excitation coil 2 switched on, the magnetic field of adjusting excitation coil through the electric current of control excitation coil makes the natural frequency of vibration damping body 1 change, and then reduces the vibration response of damping structure.
The damping body 1 in this embodiment may be a damping body, that is, the damping body is a hollow cavity inside, and may be formed by fastening and welding two plates having grooves together, the hollow cavity 11 is internally provided with magnetorheological fluid, and the damping body may be used as a housing of equipment or an outer cover of a transmission component, etc. The vibration damping body in the embodiment can also be used as a vibration damping foot pad of equipment, and the vibration damping body can also be used as a part on the equipment, particularly a part with vibration, so that the effect of reducing noise can be achieved.
Further, the vibration damping structure in this embodiment further includes a vibration sensor 3, which is disposed on the vibration damping body 1 and is configured to detect a vibration frequency generated by the vibration damping body 1. The vibration sensor 3 may be electrically connected to an input port of a controller, the controller is configured to control the current of the exciting coil, and the controller may be a microprocessor.
Further, the excitation coil 2 is coiled in a serpentine or rectangular manner at one side of the hollow cavity 11, so that the excitation coil 2 is coiled on the side wall of the hollow cavity 11 as much as possible, and the excitation coil 2 is electrified to generate a magnetic field, so that the viscosity of the magnetorheological fluid is more easily changed.
Example 2
This embodiment provides an apparatus having a vibration source thereon, the apparatus including the vibration reduction structure of the first aspect, the vibration source transmitting vibration to the vibration reduction body.
The device in this embodiment may be an outdoor unit of an air conditioner, or may be another device having a vibration source. When the device is an air conditioner outdoor unit, the vibration reduction body is used as a shell or a vibration reduction foot pad of the air conditioner outdoor unit. When the damping body is as during air condensing units's casing, the damping body is the sheet metal construction, can form the sheet metal construction through two panel beating lock welding that have the recess together, and cavity 11 is formed in two recess locks. As shown in fig. 3, the casing of the outdoor unit of the air conditioner is surrounded by a top cover 5, a front plate 9, a bottom plate 6, a rear plate 7, and two side plates 8, and the top cover, the bottom plate, the front plate, the rear plate, and the two side plates may be all of a vibration damping body structure. When the vibration damping body is used as a vibration damping foot pad of the air conditioner outdoor unit, the vibration damping body can be made into a ring shape, and a hollow cavity of the vibration damping body is an annular cavity.
Example 3
The present embodiment provides a method for controlling the device in embodiment 2, where the device in embodiment 2 is provided with a control system; the control method of the embodiment comprises the following steps: when the compressor starts to operate, vibration generated by the compressor is transmitted to the vibration reduction body through the pipeline, the vibration sensor can acquire the vibration frequency of the metal plate structure and feed the vibration frequency back to the control system, the control system analyzes the magnitude of the current vibration frequency and compares the magnitude of the current vibration frequency with the preset vibration frequency, and if the current vibration frequency of the vibration reduction body is smaller than the preset vibration frequency, the current state is kept unchanged; if the current vibration frequency of the vibration damping body is greater than or equal to the preset vibration frequency, the control system energizes the magnet exciting coil to generate a magnetic field. Through the step, whether the natural frequency of the vibration damping body needs to be changed or not can be judged according to the comparison between the vibration frequency of the vibration source and the preset frequency, and then the noise transmitted to the vibration damping body is changed.
Further, after the control system energizes the excitation coil to generate a magnetic field, the current vibration frequency of the sheet metal structure is obtained, and whether the current of the excitation coil is adjusted or not is judged again according to the current vibration frequency of the sheet metal structure; if the current vibration frequency is greater than or equal to a preset vibration frequency, controlling to increase the current of the magnet exciting coil until the vibration frequency is less than the preset vibration frequency; and if the current vibration frequency is smaller than the preset vibration frequency, maintaining the current magnitude of the current of the excitation coil unchanged.
When the air conditioner outdoor unit does not operate, the whole natural frequency of the whole vibration reduction structure is unchanged under the condition of zero magnetic field. When the compressor starts to operate, vibration generated by the compressor is transmitted to the vibration damping body through the pipeline, the vibration sensor can acquire the response of the vibration damping body and feed the response back to the controller, the controller compares the current vibration value with the preset vibration frequency according to the current vibration value, and if the current vibration value of the vibration damping body is smaller than the preset vibration value, the current exciting coil current is kept unchanged; if the current vibration frequency of the vibration damping body is larger than or equal to the preset frequency, the controller controls the excitation coil to be electrified to generate a magnetic field, the magnetorheological fluid is converted from the low-viscosity Newtonian fluid characteristic to the high-viscosity low-fluidity Bingham fluid characteristic under the action of the magnetic field, the natural frequency of the vibration damping structure can be effectively improved, and the vibration response of the vibration damping structure is reduced. At the moment, the vibration sensor feeds back the current vibration frequency, the controller compares the received vibration frequency with the preset frequency, if the current vibration frequency of the vibration damping body is smaller than the preset vibration frequency, the current of the current excitation coil is kept unchanged, and if the current vibration frequency of the vibration damping body is larger than or equal to the preset vibration frequency, the current of the excitation coil is continuously increased to increase the magnetic field intensity of the current excitation coil, so that the natural frequency of the vibration damping structure is further increased until the vibration frequency is smaller than the preset frequency.
As shown in fig. 4, the control steps of this embodiment may be:
s1, when the compressor runs, acquiring the vibration frequency of the vibration damping body;
s2, judging whether the current vibration frequency of the vibration damping body is greater than or equal to the preset frequency; if yes, go to step S3; if not, go to step S4;
s3, energizing the exciting coil, and judging whether the current vibration frequency of the vibration damping body is greater than or equal to the preset frequency again; if yes, go to step S5; if not, go to step S6;
s4, the excitation coil is not electrified;
s5, controlling and increasing the current of the magnet exciting coil until the current vibration frequency of the vibration damping body is smaller than the preset frequency;
and S6, keeping the current of the current excitation coil unchanged.
Example 4
The present embodiment provides a processor, which is used to execute a computer program, and the computer program executes the control method described in embodiment 3 as an example.
Example 5
The present embodiment provides a storage medium, which is a non-transitory storage medium, and the non-transitory storage medium is used to store a computer program, and the computer program executes the control method described in embodiment 3 as an example.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A vibration damping structure characterized by comprising:
the damping body, the damping body is formed with confined well cavity, be equipped with magnetorheological suspensions in the well cavity, one side of well cavity is equipped with excitation coil, when excitation coil circular telegram, through control excitation coil's current regulation the magnetic field of excitation coil makes the natural frequency of the damping body changes, and then reduces the vibration response of damping structure.
2. A vibration damping structure according to claim 1, wherein the exciting coil is wound in a serpentine or rectangular manner at one side of the hollow cavity.
3. A vibration damping arrangement as claimed in claim 1 or 2, further comprising a vibration sensor arranged on the vibration damping body.
4. A device having a vibration source thereon, characterized in that the device comprises the vibration damping structure according to any of claims 1-3, the vibration source transmitting vibrations to the vibration damping body.
5. The apparatus of claim 4, wherein the apparatus is an outdoor unit of an air conditioner, and the vibration reducing body is a sheet metal structure as a casing of the outdoor unit of the air conditioner.
6. A method for controlling an apparatus according to claim 5, characterized in that the apparatus is provided with a control system; the control method comprises the following steps:
when the compressor starts to operate, vibration generated by the compressor is transmitted to the vibration reduction body through the pipeline, the vibration sensor can acquire the vibration frequency of the metal plate structure and feed the vibration frequency back to the control system, the control system analyzes the magnitude of the current vibration frequency and compares the magnitude of the current vibration frequency with the preset vibration frequency, and if the current vibration frequency of the vibration reduction body is smaller than the preset vibration frequency, the current state is kept unchanged; if the current vibration frequency of the vibration damping body is greater than or equal to the preset vibration frequency, the control system energizes the magnet exciting coil to generate a magnetic field.
7. The control method of claim 6, wherein after the control system energizes the exciting coil to generate the magnetic field, the current vibration frequency of the sheet metal structure is obtained, and whether the current of the exciting coil is adjusted is judged again according to the current vibration frequency of the sheet metal structure.
8. The control method of claim 7, wherein the determining again whether to adjust the current of the excitation coil based on the current vibration frequency of the sheet metal structure comprises:
if the current vibration frequency is greater than or equal to a preset vibration frequency, controlling to increase the current of the magnet exciting coil until the vibration frequency is less than the preset vibration frequency;
and if the current vibration frequency is smaller than the preset vibration frequency, maintaining the current magnitude of the current of the excitation coil unchanged.
9. A processor for executing a computer program, the computer program when running executing the control method according to any one of claims 6 to 8.
10. A storage medium, which is a non-transitory storage medium, and which stores a computer program that executes the control method according to any one of claims 6 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111465845.4A CN114151497B (en) | 2021-12-03 | 2021-12-03 | Vibration reduction structure, vibration reduction equipment, control method of vibration reduction equipment, processor and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111465845.4A CN114151497B (en) | 2021-12-03 | 2021-12-03 | Vibration reduction structure, vibration reduction equipment, control method of vibration reduction equipment, processor and storage medium |
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| CN114151497A true CN114151497A (en) | 2022-03-08 |
| CN114151497B CN114151497B (en) | 2024-04-05 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579283A1 (en) * | 1985-03-19 | 1986-09-26 | Renault | Electromagnetic vibrations damper |
| CN201461842U (en) * | 2009-06-10 | 2010-05-12 | 重庆材料仪表研究所 | Magnetorheological fluid elastic shock absorber |
| CN101839300A (en) * | 2010-05-24 | 2010-09-22 | 谭和平 | Double-faced magneto-rheological intelligent shock pad |
| CN105805203A (en) * | 2014-12-31 | 2016-07-27 | 上海微电子装备有限公司 | Vibration damper and vibration damping method |
| CN110345569A (en) * | 2019-08-13 | 2019-10-18 | 珠海格力电器股份有限公司 | Shock absorption footpad, compressor, air conditioner |
-
2021
- 2021-12-03 CN CN202111465845.4A patent/CN114151497B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579283A1 (en) * | 1985-03-19 | 1986-09-26 | Renault | Electromagnetic vibrations damper |
| CN201461842U (en) * | 2009-06-10 | 2010-05-12 | 重庆材料仪表研究所 | Magnetorheological fluid elastic shock absorber |
| CN101839300A (en) * | 2010-05-24 | 2010-09-22 | 谭和平 | Double-faced magneto-rheological intelligent shock pad |
| CN105805203A (en) * | 2014-12-31 | 2016-07-27 | 上海微电子装备有限公司 | Vibration damper and vibration damping method |
| CN110345569A (en) * | 2019-08-13 | 2019-10-18 | 珠海格力电器股份有限公司 | Shock absorption footpad, compressor, air conditioner |
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| CN114151497B (en) | 2024-04-05 |
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