CN1421581A - Tunable power consumption quality damper for power generator - Google Patents
Tunable power consumption quality damper for power generator Download PDFInfo
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- CN1421581A CN1421581A CN 02145115 CN02145115A CN1421581A CN 1421581 A CN1421581 A CN 1421581A CN 02145115 CN02145115 CN 02145115 CN 02145115 A CN02145115 A CN 02145115A CN 1421581 A CN1421581 A CN 1421581A
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Abstract
The present invention is one kind of tunable mass damper (TMD) with generator as damper. The TMD consists of TMD mass, generator damper and spring combination. The generator is mashed through gear and gear rack and contained to TMD mass, so that the generator generates power to consume energy to form damping while the mass vibrates. Altering the outer load resistance can change damping coefficient easily. Two sets of spring are connected across the TMD mass, selected spring number regulates the elastic coefficient of TMD, and the pre-tensile differential connects is favorable to spring positioning and linearity. The present invention is installed to top of tall building, and the damping coefficient is set in the optimized value to reach optimal wind resisting and anti seismic effect and to maintain long term stability.
Description
Technical field
The invention belongs to the building construction technology field, be specifically related to a kind of tunable mass damper (TMD) that can consume energy to the generator that the vibration of highrise building or tall and slender structure is controlled.
Background technology
In recent years, along with technological progress, use high-strength, light building material in a large number, building is built higher and higher, and structure is more and more gentleer, and the damping of structure is also in continuous reduction simultaneously.Under the dynamic load effect such as high wind, earthquake, high-rise, tall and slender structure can produce comparatively strong vibration, not only can allow the user not feel well, and also easily causes Psychological Panic, inefficacy and destruction that excessive vibration simultaneously also can cause building structure.In order to overcome the defective that design theory is brought, people begin to explore a kind of new theory and method, both structural vibration control method.
In traditional structure design, generally be by increasing the ability of resisting disasters such as wind, earthquake that structural strength, rigidity and ductility strengthen structure self.Structure control then is by controlling organization structurally is installed structure to be applied control, to alleviate owing to the caused structural vibration of external drive.
Structural vibration control can be divided into Passive Control, ACTIVE CONTROL and mixing and control three kinds.Passive Control is meant that under no external energy supply situation, control is when control device vibrates with structure or is out of shape, and causes the motion of device self or distortion and passive generation.ACTIVE CONTROL is to have under the external energy supply situation, control be control device by certain control law, utilize external energy initiatively to apply.Mixing control is exactly structurally to use Passive Control and ACTIVE CONTROL simultaneously, or uses master, the passive control device of more than a kind of mode simultaneously, can give full play to the strong point of various control forms and variety of way like this.
The Passive Control of structure does not need the energy, and principle and device are all fairly simple, implements than being easier to, and applicability, reliability are better, therefore use more in civil engineering.Passive Control can be divided into three classes such as energy-obsorbing and damping, basic vibration isolation, passive energy dissipation.Energy-obsorbing and damping is especially used morely in super highrise building in engineering practice, roughly can be divided into two classes:
1, tuned mass damper
Tuned mass damper (Tuned Mass Damper-TMD) is exactly an additional mass, spring, damper on major structure of construction top, forms a sub-vibrational system.After the TMD system has been installed on the former agent structure, dynamic Characteristics of Structure will have greatly changed.When bearing dynamic loading such as earthquake and high wind when structure, both can be by the interaction of TMD and main structure, realize energy from main structure to the transfer of TMD system and consumed, reach the purpose that reduces the main structure vibration.
2, Tuned Liquid
The application of Tuned Liquid (Tuned Liquid Damper-TLD) in structural vibration control starts from twentieth century eighties.It is utilize to adjust liquid condenser, and in the structural vibration process, the dynamic pressure difference that liquid produces the damper tank wall is used as structure control power, thereby reaches when earthquake or high wind, reduces the purpose of structural vibration.
TMD, TLD device have been used to the John Hancock mansion of boston, u.s.a at present, Citicorp building and Sydney, AUS Centerpoint TV transmission tower, Toronto TV transmission tower and the Japanese much wind of buildings in New York shakes or seismic response control.Also there are some TV transmission tower and building to adopt devices such as TMD, TLD to carry out structure control in China.Because device volumes such as TMD, TLD are generally very big, often to take very large space, therefore in the application of actual TLD, often utilize the part as device such as the existing water tank mechanical floor of building.
Theoretical research proves for TMD, has the TMD damped coefficient an of the best, and when the damper of TMD was adjusted at this value, building can obtain the most effective effectiveness in vibration suppression, is greater than or less than this value, and effectiveness in vibration suppression will obviously reduce.For this reason, in engineering practice, all the parameter designing with damper gets and can adjust.And require parameter stable in long time, can guarantee that like this building also has the most effective effectiveness in vibration suppression in long time.
The TMD quality that designs, spring parameter will be realized on actual engineering, comparatively speaking also than being easier to.But realize the damper that a parameter is stable in for a long time, parameter is regulated again easily, just so not simple.Therefore the damper that designs a success often becomes the key of design TMD.The mode of the TMD damper of having used in existing engineering practice has multiple; Electro-hydraulic servo formula, Hydrautic damping etc.Wherein electro-hydraulic servo formula effect is fine, and damped coefficient is convenient adjustable, also more stable comparatively speaking, but involves great expense, and needs good M R.The damped coefficient of Hydrautic damping is subjected to the influence that temperature and oil quality change in time, can not be stable in long-time, therefore can not in long-time, obtain the effectiveness in vibration suppression of the best.
Summary of the invention
The objective of the invention is to design a kind of novel tuned mass damper (TMD), make it simple and reliable for structure, with low cost, damping parameter is convenient adjustable, again can be reliable and stable for a long period of time.
The tuned mass damper (TMD) of the present invention's design is constituted by quality (m), groups of springs (k), damper (c), and its structure principle chart as shown in Figure 1.Wherein damper (c) adopts a generator.
TMD quality of the present invention (m) is made up of sliding frame and additional mass, and sliding frame is by the roller bearings of bottom, and laterally disposed have a Limit Bearing, spacing in addition to the slip of sliding frame.
TMD groups of springs of the present invention has two groups of springs, and every group of spring one end links to each other with sliding frame, and the other end links to each other with spring support on the base plate.Two groups of springs become differential connection, and promptly the installation site of support should guarantee that when sliding frame was still in meta, the spring on both sides all was subjected to the prestretched of half.The differential connection of this spring can make sliding frame together with TMD additional mass (m) during whole vibration, make spring be in the linear state of tension always, can not occur having improved the linearity of spring simultaneously because of the relaxing of spring interference of collision mutually yet.Every group of spring can have some springs, can regulate coefficient of elasticity by the increase and decrease of number of springs.
TMD generator damper of the present invention is installed in below the sliding frame, and the sliding frame bottom is equipped with a toothed rack, and tooth bar is meshed with the gear of generator damper, drives generator amature and rotates.Rotor is circumscribed with a variable resistor, in order to regulate rotor current, so that obtain optimal damping.Generator unit stator can be connected with DC current, so that produce the stationary magnetic field in stator.
Among the above-mentioned TMD, generator can once-through type or AC type, and the excitation of stator can be external source excitation mode or permanent magnet excitation mode.
Among the present invention, the quality of TMD (m), two groups of springs (k) and generator damping device (c) are installed on the metallic iron base plate, have constituted a complete TMD.
Operating principle of the present invention is as follows:
Utilize the TMD mass motion, by rack and-pinion mechanism, drive generator and rotate, electricity generator stator coil is connected with direct current, produces a stationary magnetic field.Generator amature produces induced potential owing to having cut the magnetic line of force, behind the outer meeting resistance, produces electric current, simultaneously power consumption.The electric current of rotor has been subjected to damping force under the effect of stator field; Therefore when the mass motion of TMD, quality also just is subjected to the damping force from generator.
The vibrational energy of building under wind or geological process is transmitted into the vibration of the TMD quality at top, makes generator for electricity generation, and consumes fast with heat energy on outer meeting resistance, finally makes the vibration of building obtain very big decay.
The TMD device of the present invention's design is installed on the model of a steel work, and has carried out the test of the vibroplatform of simulated earthquake.Model experiment results shows: the TMD of application generator damper is used for highrise building or the vibration control of skyscraping structure effect is obvious.
Advantage of the present invention is as follows:
1, because the electric current in the stator coil of generator damper and the magnetic field of stator can obtain adjustment easily by regulating DC voltage; In addition, the output current of generator amature also can be adjusted easily by regulating the size of outer meeting resistance, and damped coefficient can be set within a large range easily for this reason, and can be set in optimum value.Thereby make high-rise building wind resistant, antidetonation reach optimum efficiency.
In case after 2 generator dampers were installed and adjusted, because the physical characteristic of conductor material, resistance material and magnetic material, were not what variation again decades.And the parameters such as electric current of stator coil will keep stable, have not been difficult matter.Therefore the time stability of TMD damped coefficient is fine, can realize that decades are constant.Thereby the best effectiveness in vibration suppression that has guaranteed this TMD device remains unchanged for a long time.
3, TMD adopts many spring mode, can adopt the method that increases or reduce the spring radical easily, adjusts coefficient of elasticity.The differential connection of two groups of groups of springs has improved the linearity of spring, also makes spring when work, remains in position.
4, simple and reliable for structure, easily to make, cost is low.Because good stability does not have the transmission mechanism of what complexity again, so almost there is not what maintenance.Compare with the TMD that adopts hydraulic damper, electro-hydraulic servo damper, saved a lot of manpowers and expense.
5, because simple in structure, easily manufactured, product can be realized seriation, standardization, and especially the generator damper can extensively be selected in existing generator.If adopting stator is the generator of permanent magnet, the stator power supply also can be cancelled.
6, highrise building and tall and slender structure can utilize unused space size to select the TMD product that varies in size for use, realize the TMD of colony oscillation damping method, having overcome some TMD device (electro-hydraulic servo TMD) must take very large tracts of land of flooring at high level, thereby reduces the deficiency of the usable floor area of building.
Description of drawings
Fig. 1 is a TMD principle schematic of the present invention.
Fig. 2 is a TMD structural diagrams of the present invention.Wherein Fig. 2 (a) is the side diagram, and Fig. 2 (b) is the plane diagram.
Number in the figure: M-building equivalent mass; K-building equivalent spring; C-building equivalent damping;
1 is the TMD quality, and 2 is the TMD groups of springs, and 3 is the TMD damping, and 4 is tooth bar, and 5 is generator, and 6 is guide wheel (rolling bearing), and 7 for the TMD spring connects support, and 8 is Limit Bearing, and 9 is sliding frame, and 10 is gear.
The specific embodiment
Below by embodiment, further describe the present invention.
The quality of embodiment: TMD is mainly the frame quality, more as required, can add additional mass.The angle steel of frame 9 usefulness 50*50 is welded into rectangular frame, and the middle part is welded with the support that is connected of an additional mass support and groups of springs.All these moving components have been formed the quality (m) of TMD together with additional mass, have 160 kilograms.The rolling bearing 6 that has 10 external diameters in the base of frame both sides and be 50 millimeters supports.In order to prevent framework double swerve when vibrating, the framework both sides are 50 millimeters Limit Bearing 8 in addition by 6 external diameters.According to the quality requirement of TMD design, additional mass is made up of 10 kilograms of iron plates.
The spring length of the spring 2 of TMD is 320 millimeters, outward through being 20 millimeters, have 92, be divided into two groups, every group one end is connected on the rectangular frame 9, the other end is connected on the base plate spring support 7.
The generator damper 5 of TMD is that a power is 500 watts, and rotating speed is 2400 rev/mins a direct current generator, and stator is by DC power supply, 2.5A.The outer meeting resistance of rotor is the enamel slide wire resistor of 0-50 ohm.Rotor directly connects gear 10, and the number of teeth of gear is 30, and touching number is 1.25, and tooth bar 4 length are 750 millimeters, and width is 18 millimeters, and gear 10 directly meshes with tooth bar 4.
It is on 10 millimeters the steel sole plate, to have formed a whole set of TMD that above-described parts all are installed in 2000 millimeters thickness of 2000 millimeters *.
A whole set of TMD device is installed on the steel work shelf that is welded by light section, and steelframe appearance and size is 6000 millimeters of 2000 millimeters * of 2000 millimeters *, divides 3 layers.Whole steelframe is installed in and has done the test of simulating multiple earthquake on the vibroplatform together with the TMD device.Evidence; The effectiveness in vibration suppression of top layer displacement reaches about 40%.
Claims (6)
1, a kind of tuned mass damper is constituted by quality (m), groups of springs (k), damper (c), it is characterized in that damper (c) adopts a generator.
2, tuned mass damper according to claim 1 is characterized in that quality (m) is made up of sliding frame and additional mass, and sliding frame is by the roller bearings of bottom, and laterally disposed have a Limit Bearing.
3, tuned mass damper according to claim 1 is characterized in that groups of springs (k) is two groups of springs, and an end of every group of spring links to each other with sliding frame, and the other end links to each other with spring support on the base plate, and two groups of springs become differential connection.
4, tuned mass damper according to claim 3 is characterized in that the coefficient of elasticity of spring is regulated by the number that increases and decreases every group of spring.
5, tuned mass damper according to claim 1 is characterized in that generator is installed on below the sliding frame, and the sliding frame bottom is equipped with a toothed rack, and the gears engaged of this tooth bar and motor damper drives generator amature and rotates; Rotor is circumscribed with a variable resistor that is used to regulate rotor current.
6, tuned mass damper according to claim 5 is characterized in that generator can be once-through type or AC type, and stator excitation is external source excitation mode or permanent magnet excitation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02145115 CN1198994C (en) | 2002-11-07 | 2002-11-07 | Tunable power consumption quality damper for power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02145115 CN1198994C (en) | 2002-11-07 | 2002-11-07 | Tunable power consumption quality damper for power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1421581A true CN1421581A (en) | 2003-06-04 |
| CN1198994C CN1198994C (en) | 2005-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02145115 Expired - Fee Related CN1198994C (en) | 2002-11-07 | 2002-11-07 | Tunable power consumption quality damper for power generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696909A (en) * | 2013-12-24 | 2014-04-02 | 常州容大结构减振设备有限公司 | Wind-resistant TMD system with power generation function |
| CN108061121A (en) * | 2018-01-08 | 2018-05-22 | 华中科技大学 | A kind of tuning inertia mass electromagnetic damper |
| CN108797829A (en) * | 2018-06-28 | 2018-11-13 | 北京金风科创风电设备有限公司 | Damper and bearing enclosure structure with same |
| CN112377551A (en) * | 2020-11-05 | 2021-02-19 | 扬州大学 | Automobile energy feedback type shock absorber with road condition recognition function and control system |
| US11415109B2 (en) | 2018-06-28 | 2022-08-16 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Damper and load-bearing enclosure structure having same |
-
2002
- 2002-11-07 CN CN 02145115 patent/CN1198994C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696909A (en) * | 2013-12-24 | 2014-04-02 | 常州容大结构减振设备有限公司 | Wind-resistant TMD system with power generation function |
| CN103696909B (en) * | 2013-12-24 | 2016-03-30 | 常州容大结构减振股份有限公司 | There is the wind proof TMD system of electricity generate function |
| CN108061121A (en) * | 2018-01-08 | 2018-05-22 | 华中科技大学 | A kind of tuning inertia mass electromagnetic damper |
| CN108797829A (en) * | 2018-06-28 | 2018-11-13 | 北京金风科创风电设备有限公司 | Damper and bearing enclosure structure with same |
| US11415109B2 (en) | 2018-06-28 | 2022-08-16 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Damper and load-bearing enclosure structure having same |
| CN112377551A (en) * | 2020-11-05 | 2021-02-19 | 扬州大学 | Automobile energy feedback type shock absorber with road condition recognition function and control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1198994C (en) | 2005-04-27 |
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