CN111005467A - Self-powered self-adaptive magnetorheological damper and electromagnetic damper - Google Patents
Self-powered self-adaptive magnetorheological damper and electromagnetic damper Download PDFInfo
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- CN111005467A CN111005467A CN201911395564.9A CN201911395564A CN111005467A CN 111005467 A CN111005467 A CN 111005467A CN 201911395564 A CN201911395564 A CN 201911395564A CN 111005467 A CN111005467 A CN 111005467A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
Abstract
The invention belongs to the field of energy dissipation and vibration reduction of engineering structures and wind resistance of structures, and provides a self-energy-supply self-adaptive magnetorheological damper. The self-powered self-adaptive magnetorheological damper comprises a magnetorheological damper, an electromagnetic damper, a first connecting piece and an intermediate circuit; the magneto-rheological damper and the electromagnetic damper are connected in parallel through two first connecting pieces; the first connecting piece is used for being connected with the controlled structure to move along with the controlled structure so as to drive the magnetorheological damper and the electromagnetic damper to move; the electromagnetic damper moves to generate electricity and is supplied to the magnetorheological damper through an intermediate circuit. According to the self-powered magnetorheological damper, the magnetorheological damper and the electromagnetic damper are connected in parallel into the controlled structure, the vibration of the controlled structure is directly utilized to drive the electromagnetic damper to generate electricity and provide the electricity for the magnetorheological damper, so that the self-powered magnetorheological damper can self-adaptively change the damping force of the magnetorheological damper according to the vibration condition, and the technical problem that the traditional magnetorheological damping vibration attenuation system is complex and easy to lose efficacy is solved.
Description
Technical Field
The invention belongs to the field of energy dissipation and vibration reduction of engineering structures and wind resistance of structures, and particularly relates to a self-powered self-adaptive magnetorheological damper which can solve the problem of energy supply of the magnetorheological damper.
Background
With the continuous progress of scientific technology, in order to meet the practical requirements, the scale of modern building structures is larger and larger, and super high-rise buildings and large-span bridges are more and more. The high-rise building can produce acceleration under the effect of wind load, probably arouse human discomfort, and the large-span bridge can destroy under the effect of wind load, and under the earthquake effect, the bridge and the condition that the building damaged even collapsed are also very many. The dynamic characteristics of the structure need to be carefully considered in the design, for example, the tacoma strait bridge, which is well known in 1940, is subject to torsion and eventual failure under wind loading, so it is important to control the vibration of the structure under wind loading and earthquake.
Since the last 70 th century, the research on the vibration control of civil engineering structures and the development of engineering applications have been fast, and the structural vibration control systems can be classified into four types, passive control systems, semi-active control systems, and hybrid control systems. The application of the existing structural vibration control system mainly takes passive control as a main part, and the passive control system does not need to input energy and comprises two forms of shock isolation, energy dissipation, vibration reduction and vibration reduction. Active control systems generally require input energy and sensors to acquire motion information of the structure to adjust the control force in real time. A semi-active control system combines the advantages of both passive and active control systems, requires little energy, is simpler in system construction than an active control system, has greater stability, and has the ability of an active control system to controllably vary control force or damping. In the semi-active control device, the magneto-rheological damper has the advantages of large damping force, adjustable damping force, quick response time, large working temperature range, low power and the like, and is applied to the fields of automobiles, buildings and the like.
However, magnetorheological dampers also require energy supply, require sensors and controllers to adjust the damping force, and for large buildings, many magnetorheological dampers may need to be applied to control the vibration of the structure, which makes the damping system complicated, difficult to maintain, and may lose energy supply under the action of an earthquake, resulting in system failure. In order to make the magnetorheological damper more conveniently applicable to building structures, it is necessary to design a magnetorheological damper which can realize self-sufficiency of energy and self-adaptive control without an inductor.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a self-powered self-adaptive magnetorheological damper, which aims to realize self power supply and self-adaptively change the damping force of the magnetorheological damper according to the vibration condition by connecting the magnetorheological damper and an electromagnetic damper in parallel into a controlled structure and directly utilizing the vibration of the controlled structure to drive the electromagnetic damper to generate power and provide the power for the magnetorheological damper for use, thereby solving the technical problem that the traditional magnetorheological damping vibration attenuation system is complex and easy to fail.
To achieve the above object, according to one aspect of the present invention, there is provided a self-powered adaptive magnetorheological damper comprising: the magnetorheological damper, the electromagnetic damper, the first connecting piece and the intermediate circuit;
the magneto-rheological damper and the electromagnetic damper are connected in parallel through two first connecting pieces; the first connecting piece is used for being connected with the controlled structure to move along with the controlled structure so as to drive the magnetorheological damper and the electromagnetic damper to move;
the electromagnetic damper includes: the device comprises a push rod, a ball screw, a ball nut, a flywheel, a direct current motor, a screw seat and a motor seat; the ball screw, the flywheel and the direct current motor are sequentially connected in series from top to bottom; the ball screw is arranged on the screw seat, and the ball nut and the ball screw form a ball screw pair; the direct current motor is arranged on the motor base, and the motor base is connected with the first connecting piece at the lower part; the upper end of the push rod is connected with the first connecting piece at the upper part, and the lower end of the push rod is connected with the ball nut, so that the vertical vibration displacement of the first connecting piece at the upper part is converted into the rotation of the flywheel and the main shaft of the direct current motor through the rolling screw pair, the flywheel is driven to rotate, the vibration is reduced, and the direct current motor is driven to generate electricity;
the power generation port of the direct current motor is connected with the power supply port of the magnetorheological damper through the intermediate circuit, so that power is supplied to the magnetorheological damper in a self-adaptive mode according to different vibration sizes.
Further, the device also comprises a second connecting piece and a third connecting piece; the upper end of the push rod is connected with the first connecting piece on the upper part through the second connecting piece, and the lower end of the motor base is connected with the first connecting piece on the lower part through the third connecting piece.
Further, the intermediate circuit comprises: resistors R1-R4, capacitors C1, C2, a first operational amplifier, and a second operational amplifier;
the positive pole of the voltage Vi of the input end of the intermediate circuit is connected to the reverse input end of the first operational amplifier through a resistor R1, and a capacitor C1 is connected with the resistor R1 in parallel; after the resistor R2 and the capacitor C2 are connected in parallel, two ends of the resistor R2 and the capacitor C2 are respectively connected with the reverse input end and the output end of the first operational amplifier; the output end of the first operational amplifier is connected with the inverting input end of the second operational amplifier through a resistor R3; two ends of the resistor R4 are respectively connected with the inverting input end and the output end of the second operational amplifier; the positive input end of the first operational amplifier 22 and the positive input end of the second operational amplifier are both connected with the negative pole of the voltage Vi of the input end of the intermediate circuit;
the voltage Vi at the input of the intermediate circuit is provided by the electromagnetic damper and the voltage Vo at the output is connected to the magnetorheological damper.
Further, the intermediate circuit is a phase lead circuit, and R1 × C1> R2 × C2.
Further, the intermediate circuit is a phase lag circuit, R1 × C1< R2 × C2.
Further, the intermediate circuit is a phase synchronization circuit, and R1 × C1 ═ R2 × C2.
In general, compared with the prior art, the above technical solution contemplated by the present invention can obtain the following beneficial effects:
(1) the invention provides a self-powered self-adaptive magnetorheological damper, which is a device for controlling structural vibration, wherein an electromagnetic damper can provide damping force and simultaneously generate electric energy, and the electric energy is used for supplying the magnetorheological damper. Because structural vibration can be transmitted to the direct current motor through the ball screw pair, the power generation rule of the direct current motor is directly influenced by the vibration rule, and the magneto-rheological damper can control the magnetic field intensity by controlling the current input into the excitation coil, so that the damping force of the magneto-rheological damper is controlled. Therefore, the current generated by the electromagnetic damper is input to the magnetorheological damper through the intermediate circuit, so that the energy supply problem of the magnetorheological damper can be solved, and the effect of adaptively controlling the damping force according to the vibration condition can be realized.
(2) The rotating speed of the ball screw can be increased by adopting the speed increaser, so that the energy collection efficiency of the generator is improved, the voltage output is correspondingly more timely, and the self-adaptive control capability is more sensitive.
(3) The self-powered self-adaptive magnetorheological damper is installed through various connecting pieces, so that the structural form of the connecting pieces can be changed according to different civil structures without changing the structure of the damper, and the application range of the self-powered self-adaptive magnetorheological damper is expanded.
(4) The intermediate circuit can use appropriate circuits such as a phase lead circuit, a phase lag circuit and a phase synchronization circuit according to requirements, so that richer synchronous, delay and lead self-adaptive characteristics are expanded.
Drawings
FIG. 1 is a schematic structural diagram of a self-powered adaptive magnetorheological damper in accordance with a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of an electromagnetic damper according to a preferred embodiment of the present invention;
fig. 3 is a circuit diagram of an intermediate circuit of a preferred embodiment of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-a second connecting piece, 2-a push rod, 3-a ball screw, 4-a ball nut, 5-a bearing support, 6-a first coupling, 7-a speed increaser, 8-a flywheel, 9-a second coupling, 10-a direct current motor, 11-a third connecting piece, 12-a magnetorheological damper, 13-an electromagnetic damper, 14-a first connecting piece, 15-an intermediate circuit, 16-a resistor R1, 17-a resistor R2, 18-a resistor R3, 19-a resistor R4, 20-a capacitor C1, 21-a capacitor C2, 22-a first operational amplifier, 23-a second operational amplifier, 24-a screw seat, 25-a speed increaser seat and 26-a motor seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
FIG. 1 is a schematic structural diagram of a self-powered adaptive magnetorheological damper according to the present invention. The structural vibration drives the magnetorheological damper 12 and the electromagnetic damper 13 to vibrate, the damping force is provided by the two dampers together, and the electric energy required by the magnetorheological damper can be supplied by the electromagnetic damper 13 by adjusting the electric energy by using the intermediate circuit 15.
As shown in fig. 1 and 2, the magnetorheological damper 12 and the electromagnetic damper 13 are connected in parallel by two first connectors 14. The first connecting member 14 is used for connecting with the controlled structure to move along with the controlled structure, so as to drive the magnetorheological damper 12 and the electromagnetic damper 13 to move.
The electromagnetic damper 13 includes: the device comprises a push rod 2, a ball screw 3, a ball nut 4, a flywheel 8, a direct current motor 10, a screw seat 24 and a motor seat 26. The ball screw 3, the flywheel 8 and the direct current motor 10 are sequentially connected in series from top to bottom. Ball 3 installs on screw seat 24, and ball 4 and ball 3 constitute ball vice, can realize converting linear motion into rotary motion's function. The dc motor 10 is mounted on a motor base 26, and the motor base 26 is connected to the first connecting member 14 at the lower portion. The upper end of the push rod 2 is connected with the first connecting piece 14 on the upper portion, and the lower end of the push rod is connected with the ball nut 4, so that the up-and-down vibration displacement of the first connecting piece 14 on the upper portion is converted into the rotation of the flywheel 8 and the main shaft of the direct current motor 10 through the ball screw pair, the flywheel 8 is driven to rotate, vibration reduction is achieved, and the direct current motor 10 is driven to generate electricity.
The power generation port of the direct current motor 10 is connected with the power supply port of the magnetorheological damper 12 through the intermediate circuit 15, so that power is supplied to the magnetorheological damper 12 in a self-adaptive mode according to different vibration sizes.
Preferably, the speed increasing device also comprises a first coupling 6, a speed increasing machine 7, a second coupling 9 and a speed increasing machine base 25. The speed increasing machine base 25 is fixed between the screw base 24 and the motor base 26, and the speed increasing machine 7 is installed on the speed increasing machine base 25. An input shaft of the speed increaser 7 is connected with the lower end of the ball screw 3 through a first coupling 6, a flywheel 8 is arranged on an output shaft of the speed increaser 7, and the tail end of the output shaft of the speed increaser 7 is connected with a main shaft of a direct current motor 10 through a second coupling 9. The speed increaser 7 can increase the rotating speed of the ball screw, so that the energy collection efficiency of the generator is improved.
Preferably, a second connector 1 and a third connector 11 are also included. The upper end of the push rod 2 is connected with the first connecting piece 14 on the upper part through the second connecting piece 1, and the lower end of the motor base 26 is connected with the first connecting piece 14 on the lower part through the third connecting piece 11. The first connecting piece 14, the second connecting piece 1 and the third connecting piece 11 can be changed according to different civil structures, and the application range of the invention is expanded.
Preferably, the magnetorheological damper 12 can select a model with a suitable output according to the actual damping and energy consumption requirement of the controlled structure.
Preferably, the dc motor 10 can select a model with suitable parameters according to the power supply requirement of the specific magnetorheological damper 12 selected in an actual scene, so as to provide sufficient electric energy for the magnetorheological damper.
Preferably, the intermediate circuit may use suitable circuits such as phase advancing circuits, phase lagging circuits, phase synchronizing circuits as required, thereby extending the more abundant adaptive characteristics.
In a preferred embodiment, the magnetorheological damper 12 is of the single-rod type, the electromagnetic damper 13 is embodied as shown in fig. 3, the first connection element 14 is used to integrate the two dampers and to connect the whole device to the external civil structure, the interfaces on the connection plates at the two ends of the connection element can be made in a corresponding manner to the civil engineering interface, and the intermediate circuit 15 is shown in fig. 3.
Fig. 2 is a schematic structural diagram of a preferred electromagnetic damper 13 of the present invention, wherein: the second connection element 1 and the third connection element 11 enable the connection of the electromagnetic damper 13 to the first connection element 14. The ball nut 4 and the ball screw 3 are ball screw pairs with adaptive structure and size, and can convert linear motion into rotary motion. The first coupler 6 fixedly connects the rotating ball screw with the input shaft of the speed increaser, so that the motion transmission is realized. The speed increaser 7 can set and adjust the reduction ratio according to specific application to adapt to different energy requirements. The flywheel 8 can consume the energy of the structural vibration, can be used as a damper for energy dissipation and shock absorption, can reduce the vibration conducted to the direct current motor 10, and ensures the normal and stable work of the direct current motor 10. The second coupling 9 is used for fixedly connecting the speed increaser 7 with the direct current motor 10. The direct current motor 10 is located in the last ring of the whole damper device, kinetic energy is converted into electric energy through the electromagnetic induction principle, the power generation process also has the electromagnetic damping effect, and then corresponding current is output to the magneto-rheological damper 12 through the intermediate circuit 15, so that the dissipation of structural energy and the control of vibration are realized. The push rod 2 is used for connecting the second connecting piece 1 and the ball nut 4. The bearing support 5 serves to support and restrain the ball screw 3.
Fig. 3 is a circuit diagram of a preferred intermediate circuit 15 of the present invention, the input voltage Vi of the intermediate circuit 15 being provided by the electromagnetic damper 13 and the output voltage Vo being connected to the magnetorheological damper 12. The intermediate circuit 15 of the present embodiment includes: resistors R1-R4, capacitors C1, C2, a first operational amplifier 22, and a second operational amplifier 23.
The positive electrode of the voltage Vi at the input end of the intermediate circuit 15 is connected to the inverting input end of the first operational amplifier 22 through a resistor R1, and the capacitor C1 is connected in parallel with the resistor R1; after the resistor R2 and the capacitor C2 are connected in parallel, two ends of the resistor R2 are respectively connected with the inverting input end and the output end of the first operational amplifier 22; the output end of the first operational amplifier 22 is connected with the inverting input end of the second operational amplifier 23 through a resistor R3; two ends of the resistor R4 are respectively connected with the inverting input end and the output end of the second operational amplifier 23; the positive input of the first operational amplifier 22 and the positive input of the second operational amplifier 23 are both connected to the negative pole of the input voltage Vi of the intermediate circuit 15. Preferably, the first operational amplifier 22 and the second operational amplifier 23 are both operational amplifiers OPA, and when R1 × C1> R2 × C2, a phase lead circuit can be implemented, and conversely, a phase lag circuit can be implemented, and when they are equal, a phase synchronization circuit can be implemented, so that the phase relationship between the input voltage Vi and the output voltage Vo can be changed by changing the sizes of the resistor and the capacitor as required, so as to adapt to different application scenarios.
The working principle of the invention is as follows:
the first connecting piece 14 drives the ball nut 4 of the electromagnetic damper 13 to vibrate, the ball screw 3 can make corresponding forward and reverse rotation movement, the rotation speed is changed through the speed increaser 7, and then the flywheel 8 and the generator 10 in the electromagnetic damper 13 are driven to rotate, so that damping force and certain electric energy are generated. In addition, the first connecting part 14 drives the piston of the magnetorheological damper 12 to move relative to the cylinder. Magnetorheological fluid is filled in the cylinder body, and the magnetorheological fluid can be sheared by the piston when the piston moves relative to the cylinder body, so that damping force is generated.
Because the magnetorheological fluid has certain viscosity and yield strength, and the yield strength of the magnetorheological fluid is influenced by the magnetic field intensity, the magnetic field can be controlled by the magnetic field generated by the magnet exciting coil arranged on the piston, so that the magnetic field intensity can be controlled by controlling the current input into the magnet exciting coil, and the damping force of the magnetorheological damper is further controlled. In the present invention, the current is generated by the electromagnetic damper 13, and the power generation behavior of the electromagnetic damper 13 depends on the up-and-down vibration of the push rod 2, in other words, the vibration amplitude and the vibration frequency of the controlled structure directly affect the output voltage of the electromagnetic damper 13.
Therefore, the current generated by the electromagnetic damper 13 is input to the magnet exciting coil of the magnetorheological damper 12 through the intermediate circuit 15, so that the energy supply problem of the magnetorheological damper 12 is solved, and the effect of adaptively controlling the damping force of the magnetorheological damper 12 can be achieved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A self-powered adaptive magnetorheological damper, comprising: the magnetorheological damper (12), the electromagnetic damper (13), the first connecting piece (14) and the intermediate circuit (15);
the magnetorheological damper (12) and the electromagnetic damper (13) are connected in parallel through two first connecting pieces (14); the first connecting piece (14) is used for being connected with the controlled structure to move along with the controlled structure so as to drive the magnetorheological damper (12) and the electromagnetic damper (13) to move;
the electromagnetic damper (13) includes: the device comprises a push rod (2), a ball screw (3), a ball nut (4), a flywheel (8), a direct current motor (10), a screw seat (24) and a motor seat (26); the ball screw (3), the flywheel (8) and the direct current motor (10) are sequentially connected in series from top to bottom; the ball screw (3) is arranged on the screw seat (24), and the ball nut (4) and the ball screw (3) form a ball screw pair; the direct current motor (10) is arranged on a motor base (26), and the motor base (26) is connected with a first connecting piece (14) at the lower part; the upper end of the push rod (2) is connected with a first connecting piece (14) at the upper part, and the lower end of the push rod is connected with the ball nut (4), so that the vertical vibration displacement of the first connecting piece (14) at the upper part is converted into the rotation of the flywheel (8) and the main shaft of the direct current motor (10) through the rolling screw pair, the flywheel (8) is driven to rotate, the vibration is reduced, and the direct current motor (10) is driven to generate electricity;
the power generation port of the direct current motor (10) is connected with the power supply port of the magnetorheological damper (12) through the intermediate circuit (15), so that power is supplied to the magnetorheological damper (12) in a self-adaptive mode according to different vibration sizes.
2. The self-energizing adaptive magnetorheological damper of claim 1, further comprising a second linkage (1) and a third linkage (11); the upper end of the push rod (2) is connected with the first connecting piece (14) on the upper part through the second connecting piece (1), and the lower end of the motor base (26) is connected with the first connecting piece (14) on the lower part through the third connecting piece (11).
3. A self-energizing adaptive magnetorheological damper according to any one of claims 1 to 2, wherein the intermediate circuit (15) comprises: resistors R1-R4, capacitors C1, C2, a first operational amplifier (22), and a second operational amplifier (23);
the positive electrode of the voltage Vi at the input end of the intermediate circuit (15) is connected to the inverted input end of the first operational amplifier (22) through a resistor R1, and a capacitor C1 is connected with a resistor R1 in parallel; after the resistor R2 and the capacitor C2 are connected in parallel, two ends of the resistor R2 and the capacitor C2 are respectively connected with the reverse input end and the output end of the first operational amplifier (22); the output end of the first operational amplifier (22) is connected with the inverting input end of the second operational amplifier (23) through a resistor R3; two ends of the resistor R4 are respectively connected with the inverting input end and the output end of the second operational amplifier (23); the positive input end of the first operational amplifier (22) and the positive input end of the second operational amplifier (23) are both connected with the negative pole of the voltage Vi of the input end of the intermediate circuit (15);
the intermediate circuit (15) has an input voltage Vi supplied by an electromagnetic damper (13) and an output voltage Vo connected to a magnetorheological damper (12).
4. A self-energized adaptive magnetorheological damper according to claim 3, wherein the intermediate circuit (15) is a phase advance circuit, R1C 1> R2C 2.
5. A self-energized adaptive magnetorheological damper according to claim 3, wherein the intermediate circuit (15) is a phase-lag circuit, R1 cc 1< R2 cc 2.
6. A self-energized adaptive magnetorheological damper according to claim 3, wherein the intermediate circuit (15) is a phase locked circuit, R1C 1R 2C 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395564.9A CN111005467B (en) | 2019-12-30 | Self-powered self-adaptive magnetorheological damping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395564.9A CN111005467B (en) | 2019-12-30 | Self-powered self-adaptive magnetorheological damping device |
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| CN111005467A true CN111005467A (en) | 2020-04-14 |
| CN111005467B CN111005467B (en) | 2024-04-19 |
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Cited By (4)
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| CN113062486A (en) * | 2021-03-26 | 2021-07-02 | 华中科技大学 | Tuned viscous inertial mass damper with electromagnetic damping |
| CN113833148A (en) * | 2021-10-13 | 2021-12-24 | 杨保光 | Antitorque antidetonation tensile building structure that building engineering used |
| CN114151496A (en) * | 2021-09-17 | 2022-03-08 | 西安工业大学 | Electromagnetic magneto-rheological inertia mass damper |
| CN114233794A (en) * | 2021-12-09 | 2022-03-25 | 青岛理工大学 | Displacement segmented self-control type magnetorheological damper |
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