CN114151497B - Vibration reduction structure, vibration reduction equipment, control method of vibration reduction equipment, processor and storage medium - Google Patents
Vibration reduction structure, vibration reduction equipment, control method of vibration reduction equipment, processor and storage medium Download PDFInfo
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- CN114151497B CN114151497B CN202111465845.4A CN202111465845A CN114151497B CN 114151497 B CN114151497 B CN 114151497B CN 202111465845 A CN202111465845 A CN 202111465845A CN 114151497 B CN114151497 B CN 114151497B
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- 230000009467 reduction Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000013016 damping Methods 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 230000004044 response Effects 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 238000004590 computer program Methods 0.000 claims description 7
- 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
- 230000005284 excitation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002739 metals Chemical class 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
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vibration reduction structure, equipment, a control method thereof, a processor and a storage medium, belongs to the technical field of vibration, and aims to solve the problem that when the existing equipment operates to generate vibration, a vibration reduction device cannot be adjusted according to the vibration frequency of the equipment, so that the vibration reduction effect is limited. The invention provides a vibration damping structure, comprising: the vibration damper comprises a vibration damper body, wherein the vibration damper body is provided with a closed hollow cavity, magnetorheological fluid is arranged in the hollow cavity, an exciting coil is arranged on one side of the hollow cavity, and when the exciting coil is electrified, the current of the exciting coil is controlled to adjust the magnetic field of the exciting coil, so that the natural frequency of the vibration damper body is changed, and the vibration response of the vibration damper structure is reduced. The invention changes the natural frequency of the vibration damping body by changing the current of the exciting coil, thereby adjusting the current according to the amplitude of the vibration source of the actual equipment so as to change the natural frequency of the vibration damping body, reduce the noise of the equipment and avoid resonance.
Description
Technical Field
The present invention relates to the field of vibration technologies, and in particular, to a vibration damping structure, a vibration damping device, a control method thereof, 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 running process, vibration reduction devices such as the shock absorber or the damper cannot be adjusted according to the vibration frequency of the equipment, and the vibration reduction effect is limited.
Disclosure of Invention
In view of the above, the invention discloses a vibration reduction structure, a device, a control method thereof, a processor and a storage medium, which are used for solving the problem that when the existing device operates to generate vibration, a vibration reduction device cannot be adjusted according to the vibration frequency of the device, so that the vibration reduction effect is limited.
The invention adopts the technical proposal to realize the aim that:
the first aspect of the present invention discloses a vibration damping structure, comprising: the vibration damper comprises a vibration damper body, wherein the vibration damper body is provided with a closed hollow cavity, magnetorheological fluid is arranged in the hollow cavity, an exciting coil is arranged on one side of the hollow cavity, and when the exciting coil is electrified, the current of the exciting coil is controlled to adjust the magnetic field of the exciting coil, so that the natural frequency of the vibration damper body is changed, and the vibration response of the vibration damper structure is reduced.
Further alternatively, the exciting coil is coiled in a serpentine or rectangular manner at one side of the hollow cavity.
Further optionally, the vibration damping structure further includes a vibration sensor disposed on the vibration damping body.
In a second aspect the invention discloses a device having a vibration source thereon, the device comprising a vibration reducing structure according to the first aspect, the vibration source transmitting vibrations to the vibration reducing body.
Further optionally, the device is an air conditioner outdoor unit, and the vibration reduction body is of a sheet metal structure and is used as a shell of the air conditioner outdoor unit.
A third aspect of the present invention discloses a control method of the apparatus according to the second aspect, the apparatus being provided with a control system; the control method comprises the following steps: when the compressor starts to run, vibration generated by the compressor is transmitted to the vibration damper through a pipeline, at the moment, the vibration sensor can acquire the vibration frequency of the sheet metal structure and feed the vibration frequency back to the control system, the control system analyzes the current vibration frequency and compares the current vibration frequency with the preset vibration frequency, and if the current vibration frequency of the vibration damper is smaller than the preset vibration frequency, the current state is kept unchanged; if the current vibration frequency of the vibration damper is larger than or equal to the preset vibration frequency, the control system electrifies the exciting coil to generate a magnetic field.
Further optionally, after the control system electrifies the exciting coil to generate a magnetic field, the current vibration frequency of the sheet metal structure is obtained, and whether the current of the exciting coil is regulated 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 exciting coil according to the current vibration frequency of the sheet metal structure includes: if the current vibration frequency is larger than or equal to the preset vibration frequency, controlling to increase the exciting coil current until the vibration frequency is smaller than the preset vibration frequency; and if the current vibration frequency is smaller than the preset vibration frequency, maintaining the current of the current exciting coil unchanged.
A fourth aspect of the invention discloses a processor for executing a computer program which, when run, 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, which when run performs the control method according to the third aspect.
The beneficial effects are that: according to the invention, the viscosity of the magnetorheological fluid is regulated by changing the current of the exciting coil, so that the natural frequency of the vibration damper is changed, the current can be regulated according to the amplitude of the vibration source of the actual equipment, the natural frequency of the vibration damper is changed, the noise of the equipment is reduced, and the occurrence of resonance is avoided.
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 examples of the present disclosure and other drawings may be made from these drawings by one of ordinary skill 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 showing an air conditioner outdoor unit according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of an air conditioner outdoor unit according to an embodiment of the present invention.
Reference numerals:
1-a vibration damping body; 2-exciting coil; 3-vibration sensor; 5-top cover; 6-a bottom plate; 7-a back plate; 8-side plates; 9-a front plate; 11-hollow cavity.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product 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 product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.
Vibration damping elements adopted by the existing equipment cannot be adjusted according to vibration frequency during operation of the equipment, noise generated by the equipment in different operation states is different, and noise of the equipment is high during high-frequency vibration.
According to the invention, the exciting coil current of the vibration damper is regulated according to the noise generated by the vibration of the equipment, so that the natural frequency of the vibration damper is regulated according to different running states of the equipment, and the noise generated by the equipment is reduced.
To further illustrate the technical solution of the present invention, the following specific embodiments are provided with reference to fig. 1 to 4.
Example 1
In this embodiment, there is provided a vibration damping structure, as shown in fig. 1 and 2, including: in the vibration damper 1, the vibration damper 1 is formed with a closed hollow cavity 11, magnetorheological fluid is arranged in the hollow cavity 11, an exciting coil 2 is arranged on one side of the hollow cavity 11, and when the exciting coil 2 is electrified, the magnetic field of the exciting coil is regulated by controlling the current of the exciting coil, so that the natural frequency of the vibration damper 1 is changed, and the vibration response of the vibration damper structure is further reduced.
The vibration damper 1 in this embodiment may be a vibration damper, that is, the vibration damper is internally a hollow cavity, and may be formed by buckling and welding two plates with grooves, where magnetorheological fluid is disposed in the hollow cavity 11, and the vibration damper may be used as a housing of a device or an outer cover of a transmission component. 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, especially a part with vibration, so that the vibration damping foot pad has the effect of reducing noise.
Further, the vibration damping structure in the present embodiment further includes a vibration sensor 3 provided on the vibration damping body 1 for detecting a frequency of vibration generated by the vibration damping body 1. The vibration sensor 3 may be electrically connected to an input port of a controller, which may be a microprocessor, for controlling the current level of the exciting coil.
Further, the exciting coil 2 is coiled at one side of the hollow cavity 11 in a serpentine or rectangular mode, so that the exciting coil 2 is coiled at the side wall of the hollow cavity 11 as much as possible, and the viscosity of the magnetorheological fluid is easier to change when the exciting coil 2 is electrified to generate a magnetic field.
Example 2
The present embodiment provides an apparatus having a vibration source thereon, the apparatus comprising a vibration reducing structure according to the first aspect, the vibration source transmitting vibrations to the vibration reducing body.
The device in this embodiment may be an outdoor unit of an air conditioner, or may be other devices having a vibration source. When the equipment 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 vibration damping body is used as the shell of the air conditioner outdoor unit, the vibration damping body is of a sheet metal structure, and can be welded together through buckling of two sheet metals with grooves to form the sheet metal structure, and the two grooves are buckled to form the hollow cavity 11. As shown in fig. 3, the casing of the outdoor unit of the air conditioner is formed by surrounding 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 have a structure of a vibration damping body. 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 circular ring shape, and the hollow cavity of the vibration damping body is an annular cavity.
Example 3
The present embodiment provides a control method of the apparatus as exemplified in embodiment 2, the apparatus in embodiment 2 being provided with a control system; the control method of the embodiment comprises the following steps: when the compressor starts to run, vibration generated by the compressor is transmitted to the vibration damper through a pipeline, at the moment, the vibration sensor can acquire the vibration frequency of the sheet metal structure and feed the vibration frequency back to the control system, the control system analyzes the current vibration frequency and compares the current vibration frequency with the preset vibration frequency, and if the current vibration frequency of the vibration damper is smaller than the preset vibration frequency, the current state is kept unchanged; if the current vibration frequency of the vibration damper is larger than or equal to the preset vibration frequency, the control system electrifies the exciting coil to generate a magnetic field. Through the step, whether the natural frequency of the vibration damper 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 damper body is changed.
Further, after the control system is electrified to the exciting coil to generate a magnetic field, the current vibration frequency of the sheet metal structure is obtained, and whether the current of the exciting coil is regulated is judged again according to the current vibration frequency of the sheet metal structure; if the current vibration frequency is larger than or equal to the preset vibration frequency, controlling to increase the exciting coil current until the vibration frequency is smaller than the preset vibration frequency; and if the current vibration frequency is smaller than the preset vibration frequency, maintaining the current of the current exciting coil unchanged.
When the air conditioner outdoor unit does not operate, the natural frequency of the whole vibration reduction structure is unchanged under the condition of zero magnetic field. When the compressor starts to run, vibration generated by the compressor is transmitted to the vibration damper through a pipeline, at the moment, the vibration sensor can collect the response of the vibration damper and feed the response back to the controller, the controller compares the current vibration value with preset vibration frequency according to the current vibration value, and if the current vibration value of the vibration damper is smaller than the preset vibration value, the current exciting coil current is kept unchanged; if the current vibration frequency of the vibration reduction body is greater than or equal to the preset frequency, the controller controls the exciting coil to be electrified to generate a magnetic field, and the magnetorheological fluid is converted from the Newtonian fluid characteristic of low viscosity to the Bingham fluid characteristic of high viscosity and low fluidity under the action of the magnetic field, so that the natural frequency of the vibration reduction structure can be effectively improved, and the vibration response of the vibration reduction structure can be reduced. At this time, the vibration sensor feeds back the current vibration frequency, the controller compares the received vibration frequency with a preset frequency, if the current vibration frequency of the vibration damper is smaller than the preset vibration frequency, the current of the current exciting coil is kept unchanged, if the current vibration frequency of the vibration damper is larger than or equal to the preset vibration frequency, the current of the exciting coil is continuously increased to increase the magnetic field intensity of the current exciting coil, and the natural frequency of the vibration damper 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 a compressor runs, obtaining the vibration frequency on the vibration reduction body;
s2, judging whether the current vibration frequency of the vibration damper is greater than or equal to a preset frequency; if yes, executing step S3; if not, executing the step S4;
s3, electrifying the exciting coil, and judging whether the current vibration frequency of the vibration damper is greater than or equal to a preset frequency or not again; if yes, executing step S5; if not, executing step S6;
s4, the exciting coil is not electrified;
s5, controlling and increasing exciting coil current until the current vibration frequency of the vibration reduction body is smaller than a preset frequency;
s6, maintaining the current of the current exciting coil unchanged.
Example 4
The present embodiment provides a processor for executing a computer program, which when executed performs 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 this disclosure is not limited to the particular arrangements, instrumentalities and methods of implementation 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 (8)
1. An apparatus comprising a vibration reduction structure, the vibration reduction structure comprising a vibration reduction body;
the device is provided with a vibration source, and the vibration source transmits vibration to the vibration reduction body:
the vibration damper comprises a vibration damper body, a vibration damper and a control circuit, wherein the vibration damper is characterized in that a closed hollow cavity is formed in the vibration damper, magnetorheological fluid is arranged in the hollow cavity, an exciting coil is arranged on one side of the hollow cavity, and when the exciting coil is electrified, the current of the exciting coil is controlled to adjust the magnetic field of the exciting coil, so that the natural frequency of the vibration damper is changed, and the vibration response of the vibration damper is further reduced;
the vibration damping structure further comprises a vibration sensor arranged on the vibration damping body;
the equipment is provided with a control system, the control system comprises a compressor, the compressor starts to run, vibration generated by the compressor is transmitted to the vibration damper through a pipeline, at the moment, a vibration sensor can acquire the vibration frequency of the sheet metal structure and feed the vibration frequency back to the control system, the control system analyzes the current vibration frequency and compares the current vibration frequency with a preset vibration frequency, and if the current vibration frequency of the vibration damper is smaller than the preset vibration frequency, the current state is kept unchanged; if the current vibration frequency of the vibration damper is greater than or equal to the preset vibration frequency, the control system electrifies the exciting coil to generate a magnetic field; and comparing the vibration frequency of the vibration source with a preset frequency to judge whether the natural frequency of the vibration damper body needs to be changed or not, so that the noise transmitted to the vibration damper body is changed.
2. An apparatus as claimed in claim 1, wherein said excitation coil is coiled in a serpentine or rectangular fashion on one side of said hollow cavity.
3. The apparatus of claim 2, wherein the apparatus is an air conditioner outdoor unit, and the vibration damping body is a sheet metal structure as a housing of the air conditioner outdoor unit.
4. A control method of the apparatus according to claim 3, characterized in that the apparatus is provided with a control system; the control method comprises the following steps:
when the compressor starts to run, vibration generated by the compressor is transmitted to the vibration damper through a pipeline, at the moment, the vibration sensor can acquire the vibration frequency of the sheet metal structure and feed the vibration frequency back to the control system, the control system analyzes the current vibration frequency and compares the current vibration frequency with the preset vibration frequency, and if the current vibration frequency of the vibration damper is smaller than the preset vibration frequency, the current state is kept unchanged; if the current vibration frequency of the vibration damper is larger than or equal to the preset vibration frequency, the control system electrifies the exciting coil to generate a magnetic field.
5. The control method according to claim 4, wherein after the control system energizes the exciting coil to generate a magnetic field, the vibration frequency of the current sheet metal structure is obtained, and whether to adjust the current of the exciting coil is determined again according to the vibration frequency of the current sheet metal structure.
6. The control method according to claim 5, wherein the determining whether to adjust the current of the exciting coil based on the current vibration frequency of the sheet metal structure includes:
if the current vibration frequency is larger than or equal to the preset vibration frequency, controlling to increase the exciting coil current until the vibration frequency is smaller than the preset vibration frequency;
and if the current vibration frequency is smaller than the preset vibration frequency, maintaining the current of the current exciting coil unchanged.
7. A processor, characterized in that the processor is adapted to execute a computer program which, when run, performs the control method of any of claims 4-6.
8. A storage medium, which is a non-transitory storage medium, characterized in that the storage medium is adapted to store a computer program, which, when run, performs the control method according to any one of claims 4-6.
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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 CN114151497A (en) | 2022-03-08 |
| CN114151497B true 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 | Damping callus on sole, 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 | Damping callus on sole, compressor, air conditioner |
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| CN114151497A (en) | 2022-03-08 |
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