CN109681572B - Active and passive vibration isolator and power equipment - Google Patents
Active and passive vibration isolator and power equipment Download PDFInfo
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- CN109681572B CN109681572B CN201811454346.3A CN201811454346A CN109681572B CN 109681572 B CN109681572 B CN 109681572B CN 201811454346 A CN201811454346 A CN 201811454346A CN 109681572 B CN109681572 B CN 109681572B
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses an active and passive vibration isolator and power equipment, which comprises: load platform, base platform, first passive vibration isolation portion, passive vibration isolation portion of second, middle supporting part, actuator. Wherein, the upside of the first passive vibration isolation portion is connected with the downside laminating of load platform. The lower side of the second passive vibration isolation part is attached and connected with the upper side of the base platform. The fixed end of the middle supporting part is embedded between the lower side of the first passive vibration isolation part and the upper side of the second passive vibration isolation part, and the middle supporting part is provided with a vertical accommodating cavity. The actuator is arranged in the vertical accommodating cavity and fixedly connected with the inner wall of the vertical accommodating cavity. Under the state of active vibration isolation of the vibration isolator, the actuator drives the middle supporting part to vibrate up and down. According to the invention, the actuator is arranged in the middle support part, so that the vibration isolator has a compact structure, and an active and passive vibration isolation function in a narrow space is realized.
Description
Technical Field
The invention belongs to the field of vibration isolation equipment, and particularly relates to an active and passive vibration isolator and power equipment.
Background
Vibration isolators are elastomeric elements that connect equipment to a foundation to reduce and eliminate vibrational forces transmitted from the equipment to the foundation and vibrations transmitted from the foundation to the equipment. Comprises a metal rubber vibration isolator, a steel spring vibration isolator, a rubber vibration isolator, a vibration isolation pad and an air cushion vibration isolator.
The isolation of the low-frequency line spectrum vibration of the power machinery is an important direction for the development of the ship vibration isolation technology. At present, the passive vibration isolation device widely adopted by ship machinery can reduce the total vibration level of full frequency bands, but the low-frequency vibration line spectrum is difficult to eliminate. Applying active control techniques to vibration isolation devices constitutes active vibration isolation. The active vibration isolation is to introduce a secondary vibration source (also called a mover) into a controlled system, and adjust the secondary vibration source by a certain control method to make the vibration generated by the secondary vibration source and the vibration response generated by the vibration source offset with each other, so as to achieve the purpose of isolating the vibration transmission.
Active vibration isolation can be divided into fully active vibration isolation and active and passive hybrid vibration isolation in forms. The complete active vibration isolation is to cancel a passive vibration isolation device between a vibration source and a vibration receiving structure, and the aim of vibration reduction is directly realized by an actuator. The active and passive hybrid vibration isolation is realized by connecting an actuator and a passive vibration isolation device in parallel or in series and properly controlling the motion of the actuator. Combine together actuator and passive vibration isolation device, the respective advantage of passive vibration isolation of performance and actuator, passive vibration isolation is better but does not have the vibration isolation effect to low frequency vibration to high frequency vibration isolation effect promptly, and the actuator can carry out the vibration isolation to low frequency vibration, and can further promote the vibration isolation effect through controlling the actuator. When the active and passive hybrid vibration isolation device with the actuator and the passive vibration isolation connected in parallel is adopted, if the actuator fails, the active and passive hybrid vibration isolation device can still work normally by utilizing the passive vibration isolation. For vibration isolation of large power equipment for ships, because the space in the ships is limited, full-frequency-band vibration isolation under heavy load needs to be realized in the minimum space.
Disclosure of Invention
The invention aims to provide an active and passive vibration isolator and power equipment, wherein an actuator is arranged in a middle supporting part of the vibration isolator, so that the vibration isolator is compact in structure and can realize the active and passive vibration isolation function in a narrow space.
In order to solve the problems, the technical scheme of the invention is as follows:
the invention discloses an active and passive vibration isolator, which comprises:
a load platform;
a base table;
the upper side of the first passive vibration isolation part is in fit connection with the lower side of the load platform;
a second passive vibration isolation part, wherein the lower side of the second passive vibration isolation part is jointed and connected with the upper side of the base platform;
the fixed end of the middle supporting part is embedded between the lower side of the first passive vibration isolation part and the upper side of the second passive vibration isolation part, and the middle supporting part is provided with a vertical accommodating cavity;
the actuator is arranged in the vertical accommodating cavity and fixedly connected with the inner wall of the vertical accommodating cavity;
and in the state of active vibration isolation of the vibration isolator, the actuator drives the middle supporting part to vibrate up and down.
According to the active and passive vibration isolator, the lower bottom surface of the peripheral side of the load platform is a conical bottom surface, and the upper side of the first passive vibration isolating part is provided with a first conical end side matched with the conical bottom surface of the load platform.
In the active and passive vibration isolator according to the present invention, the upper bottom surface of the peripheral side of the base table is a tapered bottom surface, and the lower side of the second passive vibration isolating part has a third tapered end side matching the tapered bottom surface of the base table.
According to the active and passive vibration isolator, the vertical accommodating cavity comprises a conical upper cavity and a conical lower cavity;
the lower side of the first passive vibration isolation part is provided with a second conical end side matched with the outer cavity wall of the conical upper cavity;
the upper side of the second passive vibration isolation part is provided with a fourth conical end side matched with the outer cavity wall of the conical lower cavity.
According to the active and passive vibration isolator, the actuator is an electromagnetic actuator, and the electromagnetic actuator comprises a shell cover, a shell, a coil, a magnetizer, a permanent magnet and a reluctance magnet;
the shell is fixedly connected with the inner wall of the vertical accommodating cavity;
the shell cover is arranged at the upper end of the shell;
a groove is formed in the inner side of the shell, and the coil is mounted in the groove;
the resistance magnet is arranged at the coil median plane and is used for dividing the magnetic field generated by the coil into an upper part and a lower part;
a first magnetizer, a first permanent magnet and a second magnetizer are arranged on the upper side of the magnetism resisting body, the first magnetizer is arranged on the upper surface of the magnetism resisting body, the first permanent magnet is arranged on the upper surface of the first magnetizer, and the second magnetizer is arranged on the upper surface of the first permanent magnet;
hinder the downside of magnet and be equipped with third magnetizer, second permanent magnet, fourth magnetizer, the third magnetizer is located hinder the lower surface of magnet, the second permanent magnet is located the lower surface of third magnetizer, the fourth magnetizer is located the lower surface of second permanent magnet.
In the active and passive vibration isolator according to the present invention, the first passive vibration isolating part and the second passive vibration isolating part are rubber vibration isolating parts.
The invention provides a power device, wherein the active and passive vibration isolator is any one of the above.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
1) according to the embodiment of the invention, the actuator is arranged in the vertical accommodating cavity of the middle supporting part, so that the vibration isolator has a compact structure, and the active and passive vibration isolation function in a narrow space is realized.
2) According to the embodiment of the invention, a double-layer structure is adopted, two-stage passive vibration isolation is realized, and the high-frequency vibration isolation effect is good.
3) According to the embodiment of the invention, the actuator is added on the basis of the vibration isolator with the double-layer structure, so that the vibration isolation capability of the common rubber vibration isolator on low-frequency vibration is improved, namely, the passive vibration isolation is used for isolating high-frequency vibration, the active vibration isolation is used for isolating middle-low frequency vibration, and the vibration isolation of a full frequency band is realized;
4) compared with other active vibration isolation elements, the actuator in the embodiment of the invention has the advantages of simple structure, light weight, small volume, high acceleration (up to more than 20 g) and speed, uniform thrust, high response speed (ms level), high precision (1-5 μm) and good application prospect.
Drawings
FIG. 1 is a front cross-sectional view of an active and passive isolator in accordance with the present invention;
fig. 2 is a top view of the active and passive isolators of fig. 1.
Description of reference numerals: 1: a load platform; 2: a first passive vibration isolation part; 3: a bolt; 4: a middle support part; 5: a second passive vibration isolation part; 6: a nut; 7: a base table; 8: an upper spring plate; 9: a permanent magnet; 901: a first permanent magnet; 902: a second permanent magnet; 10: a magnetizer; 1001: a first magnetizer; 1002: a second magnetizer; 1003: a third magnetizer; 1004: a fourth magnetizer; 11: pressing a ring; 12: a housing cover; 13: a housing; 14: a resistance magnet; 15: a coil; 16: a lower pressure ring; 17: and a lower spring plate.
Detailed Description
The vibration isolator according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Example 1
Referring to fig. 1 and 2, an active and passive isolator includes: the vibration isolation device comprises a load platform 1, a base platform 7, a first passive vibration isolation part 2, a second passive vibration isolation part 5, an intermediate support part 4 and an actuator. Wherein, the upside of the first passive vibration isolation part 2 is jointed and connected with the lower side of the loading platform 1. The lower side of the second passive vibration isolation part 5 is in contact connection with the upper side of the base table 7. The fixed end of the intermediate support portion 4 is fitted between the lower side of the first passive vibration damping portion 2 and the upper side of the second passive vibration damping portion 5. The intermediate support 4 has a vertical receiving cavity. And the actuator is arranged in the vertical accommodating cavity and fixedly connected with the inner wall of the vertical accommodating cavity. Under the state of active vibration isolation of the vibration isolator, the actuator drives the middle support part 4 to vibrate up and down. Through arranging the actuator in the vertical holding intracavity of middle support portion 4 for the compact structure of isolator, with the passive vibration isolation function of the owner that realizes in the narrow and small space. Two-layer passive vibration isolation structure has been designed to this embodiment, and two-layer passive vibration isolation structure is connected with load platform 1, base platform 7 respectively, has actually formed the passive vibration isolation structure of longitudinal symmetry, through adopting bilayer structure, has realized the passive vibration isolation of two-stage, and high frequency vibration isolation performance is good.
Further, the lower bottom surface of the circumferential side of the load platform 1 is a tapered bottom surface, and the upper side of the first passive vibration isolating part 2 has a first tapered end side matching the tapered bottom surface of the load platform 1. The upper bottom surface of the peripheral side of the base table 7 is a tapered bottom surface, and the lower side of the second passive vibration isolating part 5 has a third tapered end side matching the tapered bottom surface of the base table 7. The connection mode is set to be conical surface connection, so that the first passive vibration isolation part 2 and the second passive vibration isolation part 5 are in a pressure shear stress state, and the pressure shear type vibration isolator has the advantages of capability of bearing larger load, no overlarge rigidity and good stability.
Further, the vertical accommodating cavity comprises a conical upper cavity and a conical lower cavity. The lower side of the first passive vibration isolation part 2 has a second tapered end side matching the outer cavity wall of the tapered upper cavity. The upper side of the second passive vibration isolation part 5 has a fourth tapered end side matching the outer cavity wall of the tapered lower cavity. Similarly, the connection mode is set to be conical surface connection, so that the first passive vibration isolation part 2 and the second passive vibration isolation part 5 are in a pressure-shear stress state, and the pressure-shear vibration isolator has the advantages of capability of bearing larger load, no overlarge rigidity and better stability.
Preferably, referring to fig. 1, the actuator is an electromagnetic actuator, which specifically includes a housing cover 12, a housing 13, a coil 15, a magnetizer 10, a permanent magnet 9, and a reluctance magnet 14. The shell 13 is fixedly connected with the inner wall of the vertical accommodating cavity. The housing cover 12 is provided at the upper end of the housing 13. The inside of the housing 13 is provided with a recess in which the coil 15 is mounted. The reluctance magnet 14 is disposed at a middle position of the coil 15 and divides a magnetic field generated by the coil 15 into an upper portion and a lower portion. The upper side of the magnetism resisting body 14 is provided with a first magnetizer 1001, a first permanent magnet 901 and a second magnetizer 1002. The first magnetizer 1001 is disposed on the upper surface of the magnetism blocking body 14, the first permanent magnet 901 is disposed on the upper surface of the first magnetizer 1001, and the second magnetizer 1002 is disposed on the upper surface of the first permanent magnet 901. The lower side of the magnet resistance body 14 is provided with a third magnetizer 1003, a second permanent magnet 902 and a fourth magnetizer 1004, the third magnetizer 1003 is arranged on the lower surface of the magnet resistance body 14, the second permanent magnet 902 is arranged on the lower surface of the third magnetizer 1003, and the fourth magnetizer 1004 is arranged on the lower surface of the second permanent magnet 902. When the coil 15 is energized, a magnetic field is generated inside the coil 15, the magnetic field is divided into two magnetic fields by the resistance magnet 14, the first permanent magnet 901 and the second permanent magnet 902 are respectively subjected to the action of the varying electromagnetic excitation force to drive the first magnetizer 1001, the second magnetizer 1002, the third magnetizer 1003, the fourth magnetizer 1004 and the resistance magnet 14 to integrally move, and the force is transmitted to the case cover 12 and the case 13 and finally transmitted to the intermediate support portion 4. Therefore, the energization of the coil 15 can be changed in real time in accordance with the vibration state of the vibration isolation target, and active control of the vibration isolation target can be realized. The actuator is added on the basis of the vibration isolator with the double-layer structure, so that the vibration isolation capability of the common rubber vibration isolator on low-frequency vibration is improved, namely, the passive vibration isolation is used for isolating high-frequency vibration, the active vibration isolation is used for isolating medium-low frequency vibration, and the vibration isolation of a full frequency band is realized. Compared with other active vibration isolation elements, the actuator has the advantages of simple structure, light weight, small volume, high acceleration (up to more than 20 g), high speed, uniform thrust, high response speed (ms level), high precision (1-5 mu m) and good application prospect.
The above is only one embodiment of the actuator in the present invention, the actuator in the present invention is not limited to the above embodiment, and other actuators having the same technical effects can be designed by those skilled in the art according to the prior art or in light of the embodiment of the present invention.
Further, the first passive vibration damping portions 2 and the second passive vibration damping portions 5 are rubber vibration damping portions.
Example 2
This embodiment further defines an electromagnetic actuator on the basis of embodiment 1, and the rest is the same as or similar to embodiment 1, and will not be described again.
Referring to fig. 1, the electromagnetic actuator further includes a bolt 3, a nut 6, an upper spring plate 8, a lower spring plate 17, an upper press ring 11, and a lower press ring 16. The upper spring plate 8 is fixed on the casing cover 12 by the upper press ring 11, the lower spring plate 17 is fixed on the casing 13 by the lower press ring 16, and the bolt 3 sequentially passes through the centers of the upper spring plate 8, the second magnetizer 1002, the first permanent magnet 901, the first magnetizer 1001, the blocking magnet 14, the third magnetizer 1003, the second permanent magnet 902, the fourth magnetizer 1004 and the lower spring plate 17 and is in threaded connection with the nut 6 to lock the upper spring plate 8, the lower spring plate 17 and the actuator mover (the permanent magnet 9, the magnetizer 10 and the blocking magnet 14). When the coil 15 is energized, a magnetic field is generated inside the coil 15, the magnetic field is divided into two magnetic fields by the resistance magnet 14, and the first permanent magnet 901 and the second permanent magnet 902 are respectively subjected to the action of the variable electromagnetic excitation force to drive the magnetizer 10, the resistance magnet 14, the bolt 3, the nut 6, the upper spring piece 8 and the lower spring piece 17 to move up and down. The upper spring plate 8 transmits the force to the shell cover 12 and the shell 13 in sequence and finally to the middle support part 4; the lower spring plate 17 transmits the force to the housing 13 and finally to the intermediate support 4. Therefore, the energization of the coil 15 can be changed in real time in accordance with the vibration state of the vibration isolation target, and active control of the vibration isolation target can be realized.
Example 3
The vibration isolator is further defined on the basis of embodiments 1 and 2, and the rest parts are the same as or similar to those of embodiments 1 and 2, and are not repeated herein.
The first passive vibration isolation part 2 and the second passive vibration isolation part 5 are made of metal rubber, steel springs and other materials with excellent damping and vibration attenuation characteristics.
The active vibration isolation unit may be bolted or glued to the intermediate support 4.
The load platform 1 is provided with a mounting hole so as to be connected with a vibration isolation object; the base platform 7 is provided with mounting holes for connection to a foundation.
Example 4
A power plant comprising the active and passive vibration isolators of any one of embodiments 1, 2 and 3 above. The actuator is added to the vibration isolator of the power equipment in the embodiment, the vibration isolation capability of the common rubber vibration isolator to low-frequency vibration is improved, namely, the passive vibration isolation is used for isolating high-frequency vibration, the active vibration isolation is used for isolating middle-low frequency vibration, the vibration isolation of a full frequency band is realized, and the vibration isolation effect on the power equipment is better.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (7)
1. An active and passive isolator comprising:
a load platform;
a base table;
the upper side of the first passive vibration isolation part is in fit connection with the lower side of the load platform;
a second passive vibration isolation part, wherein the lower side of the second passive vibration isolation part is jointed and connected with the upper side of the base platform;
the fixed end of the middle supporting part is embedded between the lower side of the first passive vibration isolation part and the upper side of the second passive vibration isolation part, and the middle supporting part is provided with a vertical accommodating cavity;
the actuator is arranged in the vertical accommodating cavity and fixedly connected with the inner wall of the vertical accommodating cavity;
and in the state of active vibration isolation of the vibration isolator, the actuator drives the middle supporting part to vibrate up and down.
2. The active and passive isolator of claim 1, wherein the lower peripheral side bottom surface of the load platform is a tapered bottom surface, and the upper side of the first passive isolator has a first tapered end side that mates with the tapered bottom surface of the load platform.
3. The active-passive vibration isolator as claimed in claim 2, wherein the upper peripheral bottom surface of the base platform is a tapered bottom surface, and the lower side of the second passive vibration isolator has a third tapered end side matching the tapered bottom surface of the base platform.
4. The active and passive vibration isolator of claim 3, wherein the vertical receiving cavity comprises a tapered upper cavity and a tapered lower cavity;
the lower side of the first passive vibration isolation part is provided with a second conical end side matched with the outer cavity wall of the conical upper cavity;
the upper side of the second passive vibration isolation part is provided with a fourth conical end side matched with the outer cavity wall of the conical lower cavity.
5. The active-passive vibration isolator of claim 4, wherein the actuator is an electromagnetic actuator comprising a housing cover, a housing, a coil, a magnetizer, a permanent magnet, a reluctance magnet;
the shell is fixedly connected with the inner wall of the vertical accommodating cavity;
the shell cover is arranged at the upper end of the shell;
a groove is formed in the inner side of the shell, and the coil is mounted in the groove;
the resistance magnet is arranged at the coil median plane and is used for dividing the magnetic field generated by the coil into an upper part and a lower part;
a first magnetizer, a first permanent magnet and a second magnetizer are arranged on the upper side of the magnetism resisting body, the first magnetizer is arranged on the upper surface of the magnetism resisting body, the first permanent magnet is arranged on the upper surface of the first magnetizer, and the second magnetizer is arranged on the upper surface of the first permanent magnet;
hinder the downside of magnet and be equipped with third magnetizer, second permanent magnet, fourth magnetizer, the third magnetizer is located hinder the lower surface of magnet, the second permanent magnet is located the lower surface of third magnetizer, the fourth magnetizer is located the lower surface of second permanent magnet.
6. The active-passive vibration isolator of any one of claims 1-5, wherein the first and second passive vibration isolators are rubber vibration isolators.
7. A power plant comprising the active and passive isolator of any one of claims 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811454346.3A CN109681572B (en) | 2018-11-30 | 2018-11-30 | Active and passive vibration isolator and power equipment |
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| CN201811454346.3A CN109681572B (en) | 2018-11-30 | 2018-11-30 | Active and passive vibration isolator and power equipment |
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| CN109681572A CN109681572A (en) | 2019-04-26 |
| CN109681572B true CN109681572B (en) | 2020-06-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111003213B (en) * | 2019-12-17 | 2021-03-30 | 中国空间技术研究院 | Satellite vibration elimination method and system |
| CN113944715A (en) * | 2021-11-09 | 2022-01-18 | 上海交通大学 | Multi-degree-of-freedom active and passive vibration isolator |
| CN114382818B (en) * | 2022-01-25 | 2023-03-28 | 上海交通大学 | Vibration-suppressing hydro-electric hybrid actuator and control method thereof |
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| CN106438830A (en) * | 2016-09-07 | 2017-02-22 | 武汉源海博创科技有限公司 | Electromagnetic type active and passive integrated vibration isolator |
| CN106594169A (en) * | 2016-12-23 | 2017-04-26 | 苏州东菱智能减振降噪技术有限公司 | Quasi-zero rigidity inertia actuator |
| CN108691945A (en) * | 2018-05-04 | 2018-10-23 | 汪玉 | A kind of resonance free peak damper of embedded negative stiffness dynamic vibration absorber |
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