CN107831801A - A kind of vibration absorber - Google Patents
A kind of vibration absorber Download PDFInfo
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- CN107831801A CN107831801A CN201711297734.0A CN201711297734A CN107831801A CN 107831801 A CN107831801 A CN 107831801A CN 201711297734 A CN201711297734 A CN 201711297734A CN 107831801 A CN107831801 A CN 107831801A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D19/00—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
- G05D19/02—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase characterised by the use of electric means
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Abstract
The invention provides a kind of vibration absorber, wherein, including：Module occurs for vibration signals collecting module, control module and vibration；Vibration signals collecting module, sent for gathering the vibration signal of equipment under test, and by vibration signal to control module；Control module is used to receive vibration signal, based on the dynamic corresponding control signal of signal generation of institute, and sends control signals to vibration and module occurs；Module occurs for vibration, is vibrated in response to control signal, offsets and is vibrated caused by the equipment under test.The embodiment of the present invention has the effect being preferably controlled to vibration.
Description
Technical field
The present invention relates to ship vibration control technology field, in particular to a kind of vibration absorber.
Background technology
The noise Stealth Fighter on naval vessel is an important indicator for weighing naval vessel fight capability, is directly connected to the life on naval vessel
Life power and fighting capacity, the pollution sources of naval vessel noise itself shake mainly due to the power set inside ship and other servicing units
Caused by dynamic.
Inventor has found under study for action, carries out suppressing the mode of vibration on naval vessel in the prior art, typically passes through
Physics mode, such as be generally installation rubber absorbers by the way of and coat high resistant in the outer surface for producing the equipment of vibrations
Damping composite material carries out vibration suppression or cut-out vibration transmission channels, change of such a mode for vibration frequency especially low frequency wire
The vibration of spectrum form can not carry out tracking processing and control well, so the effect for suppressing vibration is not ideal.
The content of the invention
In view of this, it is an object of the invention to provide vibration absorber, to improve the effect for suppressing vibration.
In a first aspect, the embodiments of the invention provide a kind of vibration absorber, including：Vibration signals collecting module, control mould
Module occurs for block and vibration；
The vibration signals collecting module, sent for gathering the vibration signal of equipment under test, and by the vibration signal
To control module；
The control module is used to receive the vibration signal, and corresponding control signal is generated based on the vibration signal,
And the control signal is sent to vibration module occurs；
Module occurs for the vibration, for being vibrated in response to the control signal, offsets the equipment under test and is produced
Raw vibration.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, institute
It is decelerator and/or steam turbine to state equipment under test.
With reference to the possible embodiment of the first of first aspect or first aspect, the embodiments of the invention provide first
Second of possible embodiment of aspect, wherein, the vibration signals collecting module includes：Multiple acceleration transducers；
The vibration signal includes：Vibration acceleration；
Module, which occurs, for the vibration includes：Multiple electromagnetic actuators；The multiple acceleration transducer and the multiple electricity
Magnetic actuator corresponds；
The multiple acceleration transducer is respectively arranged in the ad-hoc location of the equipment under test, for gathering equipment under test
Direction of vibration on vibration acceleration, and the vibration acceleration is sent to the control module；
The control module calculates controling power, and base based on the quality coefficient of the vibration acceleration and the equipment under test
Corresponding control signal is generated in the controling power, the control signal is sent to corresponding electromagnetic actuator.
With reference to second of possible embodiment of first aspect, the embodiments of the invention provide the third of first aspect
Possible embodiment, wherein,
The vibration signals collecting module, in addition to：Speed probe；
The speed probe is used for the rotating speed for gathering steam turbine, and the rotating speed is sent to the control module；Institute
Control module is stated to be used to be based on the rotating speed and vibration acceleration generation control signal.
With reference to the third possible embodiment of first aspect, the embodiments of the invention provide the 4th of first aspect kind
Possible embodiment, wherein, when the equipment under test is decelerator, the acceleration transducer is installed on the company of decelerator
On acting flange, the corresponding vibration occurs module and is installed on the adpting flange of the decelerator；
When the equipment under test is steam turbine, the acceleration transducer is installed on inside steam turbine changeover portion truss,
The vibration occurs module and is installed on by rebound inside the steam turbine changeover portion truss.
, can the embodiments of the invention provide the 5th of first aspect kind with reference to the 4th kind of possible embodiment of first aspect
Can embodiment, wherein, the rebound is defined stiffness bearer, and the quasi- stiffness bearer includes：First bossing, centre
Groove part and the second bossing；Wherein, the outer surface of intermediate groove portion is coated with compound polyurethane material.
With reference in a first aspect, the embodiments of the invention provide the 6th kind of possible embodiment of first aspect, wherein, it is described
Control module, including：First signal condition unit, dsp controller, secondary signal conditioning unit and power amplifier；
First signal condition unit be used for the vibration signal received is amplified, filter and analog-to-digital conversion at
Reason, and the vibration signal obtained after processing is sent to dsp controller；
The dsp controller is used to receive the vibration signal obtained after the processing, and phase is generated based on the vibration signal
The control signal answered, and the control signal is sent to secondary signal conditioning unit；
The secondary signal conditioning unit be used for receive the control signal, to the control signal carry out analog-to-digital conversion,
Filtering process, the control signal after being handled, and the control signal after the processing is sent to power amplifier；
After the power amplifier carries out power amplification to the control signal after the processing, mould occurs for output to vibration
Block.
With reference to the first possible embodiment of first aspect, the embodiments of the invention provide the 7th of first aspect kind
Possible embodiment, wherein, when the equipment under test is decelerator, module, which occurs, for the vibration includes：A type electromagnetic activations
Device, EIAJ 500N, for controlling decelerator characteristics of low-frequency line spectrum to vibrate；
When the equipment under test is steam turbine, module, which occurs, for the vibration includes：Type B electromagnetic actuator, EIAJ
For 400N, for controlling steam turbine low frequency spectrum lines to vibrate.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 8th of first aspect kind, wherein, institute
Stating device also includes：Communication module；
Described device establishes that radio communication is connected or wire communication connects by the communication module and external equipment.
What it is with reference to first aspect is eight kinds of possible embodiments, and the embodiments of the invention provide the 9th of first aspect kind
Possible embodiment, wherein, the communication module, for after communication connection is established with outside mobile terminal device, receiving
The control command that the mobile terminal device is sent, the control command is sent to control module, so that the control module
In response to the control command.
A kind of oscillation damping method provided in an embodiment of the present invention, the vibration of equipment under test is gathered using vibration signals collecting module
Signal, and the vibration signal is sent to control module, control module is based on the vibration signal and generates corresponding control signal, and
The control signal is sent to vibration module occurs, vibration occurs to be vibrated after module receives the control signal, to offset quilt
Vibrated caused by measurement equipment；With it is of the prior art using physics mode carry out suppress vibration compared with, have preferably tracking
Processing and control effect.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows a kind of structural representation for vibration absorber that one embodiment of the invention is provided；
Fig. 2 shows a kind of structural representation for control module that another embodiment of the present invention provides；
Fig. 3 shows a kind of concrete structure schematic diagram for vibration absorber that another embodiment of the present invention is provided；
Fig. 4 shows that one embodiment of the invention provides the structural representation of accurate rigid backing plate；
Fig. 5 shows the schematic diagram for the vibration control that one embodiment of the invention provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is part of the embodiment of the present invention, rather than whole embodiments.The present invention being generally described and illustrated herein in the accompanying drawings is real
Applying the component of example can be configured to arrange and design with a variety of.Therefore, it is of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on embodiments of the invention, institute that those skilled in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of protection of the invention.
In the prior art, the mode for the suppression vibration taken on naval vessel is usually to use physics vibration damping mode, such as is pacified
Fill rubber absorbers and carry out vibration suppression or cut-out vibration in the outer surface cladding high damping composite material for producing the equipment of vibration
Transmission channels, the vibration particularly resonant frequency that such a mode is only limitted to a certain fixed frequency section can be controlled effectively,
The vibration of the especially low frequency spectrum lines form constantly to be changed for vibration frequency can not be effectively controlled；Based on this,
The embodiments of the invention provide a kind of vibration absorber.
Embodiment shown in reference picture 1, a kind of vibration absorber is provided in the present embodiment, the device includes：Vibration signal
Module 103 occurs for acquisition module 101, control module 102 and vibration；
Above-mentioned vibration signals collecting module 101, believe for gathering the vibration signal of equipment under test, and by the vibration collected
Number send to control module；
Control module 102 is used to receive above-mentioned vibration signal, and corresponding control signal is generated based on the vibration signal, and will
Control signal, which is sent to vibration, occurs module 103；
Module 103 occurs for above-mentioned vibration, is vibrated in response to above-mentioned control signal, is produced with offsetting the equipment under test
Raw vibration.
In the present embodiment, above-mentioned equipment under test is decelerator and/or steam turbine.
Above-mentioned vibration signals collecting module includes：Multiple acceleration transducers；Above-mentioned vibration signal includes：Vibration adds
Speed；Module, which occurs, for above-mentioned vibration includes：Multiple electromagnetic actuators；Wherein, multiple acceleration transducers are made with multiple electromagnetism
Dynamic device corresponds, i.e., each acceleration transducer is correspondingly arranged on an electromagnetic actuator respectively.
Exemplary, above-mentioned multiple acceleration transducers are respectively arranged in around equipment under test, tested for gathering
Vibration acceleration in all directions of equipment, and the vibration acceleration collected is sent to control module.
Quality coefficient of the control module based on the vibration acceleration and equipment under test received calculates controling power, and is based on being somebody's turn to do
Controling power generates corresponding control signal, and the control signal is sent to corresponding electromagnetic actuator, and then electromagnetic actuator base
Vibration is produced in the control signal, the vibration is identical, in opposite direction with the vibration amplitude of equipment under test, reaches and equipment under test
The purpose offseted is vibrated, and then suppresses the vibration of equipment under test.
When the equipment under test is decelerator, above-mentioned acceleration transducer is installed on the adpting flange of decelerator,
Accordingly, the vibration generation module is installed on the adpting flange of the decelerator；
When the equipment under test is steam turbine, above-mentioned acceleration transducer is installed in steam turbine changeover portion truss
Portion, the vibration occur module and are installed on by rebound inside the steam turbine changeover portion truss.
When equipment under test is steam turbine and decelerator, the device passes through in steam turbine changeover portion and gear-box connection method
Electromagnetic actuator is installed, the principle cancelled out each other by vibration wave reduces the vibration of unit, while reduces vibration from unit at orchid
Downward transmission.From the angle of mechanical impedance analysis equivalent to the mechanical impedance for adding transmission channels.For lifting device
Control effect, it is necessary to be reduced as far as the contact area between steam turbine changeover portion and gear-box adpting flange and raft frame,
So as to avoid vibration from transmitting the generation of short circuit phenomenon.Therefore, this programme design is proposed on the premise of not influenceing in unit pair, is used
Rebound replaces the original stiffness bearer of unit.
Shown in reference picture 4, above-mentioned rebound is defined stiffness bearer, and the quasi- stiffness bearer includes：First bossing
401st, the bossing 403 of intermediate groove portion 402 and second；Wherein, the outer surface of intermediate groove portion is answered coated with polyurethane
Condensation material.The quasi- stiffness bearer uses stepped design to reduce contact area, and compound polyurethane material is laid in cushion block groove,
To increase the damping of cushion block.
In a possible embodiment, when above-mentioned equipment under test is decelerator, above-mentioned multiple acceleration sensings
Device is installed around decelerator respectively, for gathering the vibration acceleration in decelerator all directions, and by the vibration acceleration
Send to control module；When above-mentioned equipment under test is steam turbine, above-mentioned acceleration transducer is installed on the week of steam turbine
Enclose, the vibration acceleration in all directions for gathering steam turbine, and the vibration acceleration collected is sent to control mould
Block.Quality coefficient of the above-mentioned control module based on above-mentioned vibration acceleration and equipment under test calculates controling power, and based on described
Controling power generates corresponding control signal, and the control signal is sent to corresponding vibration module occurs, and mould occurs for the vibration
Block can be electromagnetic actuator, and the position of the electromagnetic actuator is consistent with the position of corresponding acceleration transducer.
In the present embodiment, above-mentioned control module, including：First signal condition unit 201, dsp controller 202, second
Signal condition unit 203 and power amplifier 204；
The first above-mentioned signal condition unit 201 be used for the vibration signal received is amplified, filter and modulus turn
Processing is changed, first signal condition unit includes：Amplifying circuit, filter circuit and analog to digital conversion circuit, first signal condition
The vibration signal that unit 201 is additionally operable to obtain after processing is sent to dsp controller 202；
Above-mentioned dsp controller 202 is used to receive the vibration signal obtained after above-mentioned processing, is generated based on the vibration signal
Corresponding control signal, and the control signal is sent to secondary signal conditioning unit 203；
Above-mentioned secondary signal conditioning unit 203 be used for receive above-mentioned control signal, to the control signal carry out analog-to-digital conversion,
Filtering process, the control signal after being handled, and the control signal after the processing is sent to power amplifier；This second
Signal condition unit includes：Analog to digital conversion circuit and filter circuit；
After above-mentioned power amplifier 204 carries out power amplification to the control signal after above-mentioned processing, output to vibration
Generation module；And then vibrate generation module and vibrated in response to the vibration signal；In the present embodiment, vibration occurs module and produced
Raw vibration signal is that the caused vibration with equipment under test is opposite, so vibrate occur module caused by vibration with to
Disappear the vibration of equipment under test, plays the purpose for suppressing vibration.
The principle that the present apparatus is cancelled out each other according to above-mentioned vibration wave in design, pass through reasonable selection acceleration transducer
Layout points, the vibration suppression to vibration source or the effect of cut-out vibration transmission channels can be achieved.Detailed control principle reference picture 5
Shown, wherein lines 1 represent the oscillating curve that vibration produced by module occurs for vibration, and it is (tested to set that lines 2 represent power-equipment
It is standby) produced by vibration oscillating curve, the two size is identical, opposite in phase.
In the present embodiment, above-mentioned equipment under test is decelerator and steam turbine, and above-mentioned multiple acceleration transducers are distinguished
It is installed on the adpting flange of decelerator with inside steam turbine changeover portion truss, the plurality of acceleration transducer gathers deceleration respectively
The vibration acceleration of device and steam turbine in all directions, and the vibration acceleration collected is sent to the first signal transacting list
Member, the vibration acceleration are sent to DSP Processor, DSP Processor after the first signal processing unit carries out signal transacting
Controling power is calculated according to the quality coefficient of the vibration acceleration and decelerator or steam turbine, it is corresponding based on controling power generation
Control signal, and the control signal is sent to secondary signal conditioning unit, after the processing of secondary signal conditioning unit
Send to corresponding electromagnetic actuator, electromagnetic actuator and generated and decelerator or steam turbine based on its control signal received
The equivalent opposite vibration signal of former vibration signal, and then play the purpose that vibration offsets；Dsp controller is pressed in the present embodiment
Control signal is obtained after adaptive algorithm processing, drive ram produces controling power, acts on controlled device steam turbine and deceleration
On device, produce and the equivalent reverse vibratory response of former vibration signal；In the present embodiment, when the equipment under test is decelerator,
Using A type electromagnetic actuators, the A type electromagnetic actuators EIAJ is 500N, for controlling decelerator characteristics of low-frequency line spectrum to shake
It is dynamic；When the equipment under test is steam turbine, using Type B electromagnetic actuator, EIAJ 400N, for controlling steam turbine low
Frequency line spectrum vibrates.
Vibration signals collecting module in the present embodiment also includes：Speed probe；The speed probe is used to gather vapour
The rotating speed of turbine, and the rotating speed is sent to control module, the vapour that the control module is gathered based on the speed probe
The acceleration signal that the rotating speed of turbine and above-mentioned acceleration transducer are gathered carries out generation control signal；Specifically, control mould
Block can use the tach signal as reference signal, and the purposes of reference signal is to reflect the rotating speed of steam turbine, because steamer
Vibration noise caused by machine be as caused by operating steam turbine, if will to it is caused vibration carry out effectively containment, it is necessary to
With reference to the rotating speed of steam turbine.
In another possible embodiment, above-mentioned described device also includes：Communication module；
Described device establishes that radio communication is connected or wire communication connects by the communication module and external equipment.
The communication module can be included：Wire cable interface, the wire cable interface by cable and external equipment, than
As console, host computer are communicatively coupled；Or the communication module includes：GPRS(General Packet Radio
Service, general packet radio service technology) part, wireless WiFi (WIreless-Fidelity, Wireless Fidelity) part etc.
Wireless Telecom Equipment, and then meet that the communication equipment can for example can be able to be hand wirelessly with external equipment
The terminal devices such as mechanical, electrical brain establish radio communication connection.
Establish after radio communication is connected, the communication module, be additionally operable in communication module and outside mobile terminal device
After establishing communication connection with outside mobile terminal device, the control command that the mobile terminal device is sent is received, by the control
System order is sent to control module, so that the control module is in response to the control command；Exemplarily, the control command can
To be to include sign on, END instruction and data acquisition request instruction etc..
In Fig. 3, the concrete application example of the present invention is shown, the vibration absorber in the present embodiment is used for decelerator
With Steam Turbine into power-equipment carry out vibration damping, wherein each acceleration transducer 303 passes through a cable and terminal box 306
It is connected, the corresponding electromagnetic actuator 302 of each acceleration transducer, every five acceleration transducers 302 share a wiring
Box；Five acceleration transducer signals import a cable and are connected to switch board 307 by terminal box 306 in terminal box 306, should
First signal condition unit, dsp controller, secondary signal conditioning unit and power amplifier are installed in switch board.Switch board
The control signal that dsp controller in 307 calculates is conveyed to power amplifier, control signal quilt through secondary signal conditioning unit
Cable transmission to 4 terminal boxes, each terminal box is always driven again to pass through 5 tunnel actuator drive signals by 4 actuator after amplification
Actuator point driving cable transfer gives 5 electromagnetic actuators.Package unit shares 4 terminal boxes, be arranged in steam turbine and
On decelerator.Speed probe can be wherein connected on terminal box D, resulting tach signal can use as reference signal.
Preferably, to avoid the electromagnetic interference of other electric rooms on naval vessel, above-mentioned vibration absorber also includes：Electromagnetism every
From part, the electromagnetic interference with the device unavoidably by outside.
In the present embodiment, electromagnetic actuator uses metal shell, and uses closed design.Applied between each package board of shell
If conductive fabric pads, to improve actuator entirety electromagnetic compatibility technology index.Electromagnetic actuator is by an Aviation Connector with connecing
Line box is connected.Selected Aviation Connector meets the requirement of EMC Design.
Switch board is designed using double-deck partition-type, strong and weak electricity physical isolation, and takes full weld.Cover plate, cabinet door, fan etc.
It is electromagnetically shielded using radome, net, box etc..Switch board is each inside it except the double-level-metal housing shroud of entirety
Module also uses EMC Design, is isolated between module by metal partion (metp).
Device external cable carries out type selecting according to cable for ship standard, and cable is except the gauze screen carried, its outside volume
Two layers of copper mesh is also laid outside, then whole cable is packaged device using shielding protection measure protection operation with heat-shrinkable T bush
The computer of software
Preferably, the vibration absorber in the present embodiment includes：20 electromagnetic actuators, 20 acceleration transducers and 1
Switch board；
The parameter of above-mentioned vibration absorber is：
A), operating frequency range：10Hz-00Hz；
B), the maximum output controling power of above-mentioned electromagnetic actuator：A type electromagnetic actuators (model IEA050)：500N/
Platform；Type B electromagnetic actuator (model IEA 040)：400N/ platforms
C), switch board input voltage：AC380V/50Hz；
D), weight, size：Low frequency spectrum lines control device gross weight ≯ 900kg, switch board appearance and size ≯ 600mm ×
500mm × 800mm (length × width × height, without shock absorber)；
E), vibration damping index：Device controls in the main line spectrum vibration acceleration level of 20 acceleration transducer points of host groups
Amount is not less than 5dB (multi-point average).
Compared with traditional passive vibration control technology, the vibration absorber in above-described embodiment can track controlled device and shake
The change of dynamic frequency, controling power size and phase accordingly adjust according to the vibration of control object (equipment under test), to low frequency (especially
Low frequency spectrum lines) vibration have good control effect.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention.The protection in the present invention should all be covered
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
- A kind of 1. vibration absorber, it is characterised in that including：Module occurs for vibration signals collecting module, control module and vibration；The vibration signals collecting module, sent for gathering the vibration signal of equipment under test, and by the vibration signal to control Molding block；The control module is used to receive the vibration signal, and corresponding control signal is generated based on the vibration signal, and will The control signal, which is sent to vibration, occurs module；Module occurs for the vibration, is vibrated in response to the control signal, offsets and is vibrated caused by the equipment under test.
- 2. device according to claim 1, it is characterised in that the equipment under test is decelerator and/or steam turbine.
- 3. device according to claim 1 or 2, it is characterised in that the vibration signals collecting module includes：Multiple acceleration Spend sensor；The vibration signal includes：Vibration acceleration；Module, which occurs, for the vibration includes：Multiple electromagnetic actuators；The multiple acceleration transducer is made with the multiple electromagnetism Dynamic device corresponds；The multiple acceleration transducer is respectively arranged in the ad-hoc location of the equipment under test, for gathering shaking for equipment under test Vibration acceleration on dynamic direction, and the vibration acceleration is sent to the control module；The control module calculates controling power based on the quality coefficient of the vibration acceleration and the equipment under test, and is based on institute State controling power and generate corresponding control signal, the control signal is sent to corresponding electromagnetic actuator.
- 4. device according to claim 3, it is characterised in that the vibration signals collecting module, in addition to：Revolution speed sensing Device；The speed probe is used for the rotating speed for gathering steam turbine, and the rotating speed is sent to the control module；The control Molding block is used for based on the rotating speed and vibration acceleration generation control signal.
- 5. device according to claim 3, it is characterised in that when the equipment under test is decelerator, the acceleration Sensor is installed on the adpting flange of decelerator, and the connection method that module is installed on the decelerator occurs for the corresponding vibration Lan Shang；When the equipment under test is steam turbine, the acceleration transducer is installed on inside steam turbine changeover portion truss, described Vibration occurs module and is installed on by rebound inside the steam turbine changeover portion truss.
- 6. device according to claim 5, it is characterised in that the rebound is defined stiffness bearer, the quasi- rigid pad Block includes：First bossing, intermediate groove portion and the second bossing；Wherein, the outer surface coating of intermediate groove portion There is compound polyurethane material.
- 7. device according to claim 1, it is characterised in that the control module, including：First signal condition unit, Dsp controller, secondary signal conditioning unit and power amplifier；First signal condition unit is used to the vibration signal received being amplified, filtered and analog-to-digital conversion process, and The vibration signal obtained after processing is sent to dsp controller；The dsp controller is used to receive the vibration signal obtained after the processing, corresponding based on vibration signal generation Control signal, and the control signal is sent to secondary signal conditioning unit；The secondary signal conditioning unit is used to receive the control signal, and analog-to-digital conversion, filtering are carried out to the control signal Processing, the control signal after being handled, and the control signal after the processing is sent to power amplifier；After the power amplifier carries out power amplification to the control signal after the processing, module occurs for output to vibration.
- 8. device according to claim 2, it is characterised in that when the equipment under test is decelerator, the vibration hair Raw module includes：A type electromagnetic actuators, EIAJ 500N, for controlling decelerator characteristics of low-frequency line spectrum to vibrate；When the equipment under test is steam turbine, module, which occurs, for the vibration includes：Type B electromagnetic actuator, EIAJ are 400N, for controlling steam turbine low frequency spectrum lines to vibrate.
- 9. device according to claim 1, it is characterised in that described device also includes：Communication module；Described device establishes that radio communication is connected or wire communication connects by the communication module and external equipment.
- 10. device according to claim 9, it is characterised in that the communication module, for being set with outside mobile terminal After standby foundation communication connection, the control command that the mobile terminal device is sent is received, the control command is sent to control Module, so that the control module is in response to the control command.
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| CN201711297734.0A CN107831801A (en) | 2017-12-08 | 2017-12-08 | A kind of vibration absorber |
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| CN201711297734.0A CN107831801A (en) | 2017-12-08 | 2017-12-08 | A kind of vibration absorber |
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Application publication date: 20180323 |