CN104455902A - Piezoresistive pressure feedback semi-active broadband shock absorber - Google Patents
Piezoresistive pressure feedback semi-active broadband shock absorber Download PDFInfo
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- CN104455902A CN104455902A CN201410581923.0A CN201410581923A CN104455902A CN 104455902 A CN104455902 A CN 104455902A CN 201410581923 A CN201410581923 A CN 201410581923A CN 104455902 A CN104455902 A CN 104455902A
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- end cap
- pressure drag
- field coil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
Abstract
The invention discloses a piezoresistive pressure feedback semi-active broadband shock absorber which comprises a housing, an upper end cover, a lower end cover, a membrane, a valve seat, an inflation valve, a fixed partition plate, a movable partition plate, an excitation coil, an excitation coil protecting cover, a piezoresistive element, a connector body and an external circuit. The membrane and the movable partition plate divide the space between the upper end cover and the lower end cover of the shock absorber into an air cavity, a magneto-rheological liquid cavity and an oil cavity from top to bottom. The piezoresistive element, the excitation coil and a fixed-value resistor are connected to an external power supply in series. The piezoresistive pressure feedback semi-active broadband shock absorber can perform real-time automatic pressure pulsation feedback according to pressure pulsation change of a shock absorber inlet oil, further change current in the excitation coil and the damping coefficient of magneto-rheological liquid, can absorb broadband pressure pulsation in a hydraulic pump and a hydraulic pipeline and overcomes the defect that a traditional energy accumulator is narrow in shock reduction frequency range.
Description
Technical field
The present invention relates to hydraulic air pipe-line system vibration control technology field, particularly relate to a kind of pressure drag type pressure feedback half initiatively wideband vibration damper.
Background technique
In most of hydraulic system, hydraulic pressure main pump is axial piston pump, and by its structural limitations, the high-voltage oil liquid that this kind of pump exports certainly exists press and flux pulsation, the existence of these pressure pulsations, in most cases, is all disadvantageous to hydraulic system.
First, the pressure pulsation that axial piston pump produces is the main cause of pipeline and structural member vibration in hydraulic system, and it shows as many complicated solid liquid interation, its vibration characteristics is not easily predicted, be difficult to control, have a strong impact on travelling comfort, safety and reliability that hydraulic system uses, and cause it to there is more fault.According to many-side statistics, in aircraft power system, hydraulic line failure accounts for the 50%-52% of element class fault.Serious accident in civil aircraft and military secret, also lost efficacy with hydraulic pipe line greatly and had direct relation.
Secondly, in some high performance systems, pressure pulsation of oil source can produce obviously impact to the performance of system.Such as in hydraulic servo control system, it is non-linear that the pressure pulsation of oil source that axial piston pump brings can cause servo valve dynamic characteristic to exist, the static accuracy of influential system and dynamic quality.
3rd, owing to being subject to the impact of axial piston pump working conditions change complexity and hydraulic plumbing system spatial structure complexity, the pressure pulsation in hydraulic pressure pumping hole pipeline and the vibration formed thus have frequency and amplitude change feature all very greatly.Such as, for most of aircraft, its from fly in the whole cycle of landing, the rotating speed of axial piston pump repeatedly can change in the scope being greater than 10000 turns/min from 0 turn/min, causes the fluctuating frequency of pressure of axial plunger pumping hole also can change in the scope from 0Hz to 2000Hz.
Therefore, how research is in the pressure pulsation of complexity change and under vibrating change condition, design one can change according to pressure pulsation, change inherent parameters in real time, the pulsation adsorber of oil liquid pressure pulsation in effective elimination or suction line, to raising hydraulic system dynamic quality, the working life reducing pipeline vibration harm and prolongation hydraulic element is all very important.
Accumulator is that the one of absorption pressure pulsation commonly uses hydraulic element.But the effect that pressure pulsation eliminated by traditional accumulator is comparatively limited.First, traditional accumulator parameter is not easily accurately determined, existing design method is often determine according to theoretical formula method or emulation; In addition, in real work, the running parameter of traditional accumulator is changeless, making it when eliminating pressure pulsation, can not change running parameter flexibly and changing with adaptation condition, eliminate pressure pulsation effect poor.For the shortcoming that effect during traditional accumulator elimination pressure pulsation is poor, a lot of patent has carried out improvement and bring new ideas to the structure of accumulator and principle.
Chinese patent ZL200420079927.0 discloses a kind of composite energy storage device, have employed the mode of piston accumulator and barrierless accumulator compound, improves the speed of response of system by the method shortening pipeline.
Chinese patent CN102269235B discloses and a kind ofly relates to agricultural plant protection spraying system mechanically, for absorbing atomizer passgae pressure pulsation, and keeps best to the assimilation effect of pressure pulsation.Traditional accumulator and MR damper combine by this system, utilize the pressure in pressure transducer Real-Time Monitoring pipeline, when exceeding certain limit, then control by PLC the electric current increasing or reduce field coil in MR damper, change magnetic flow liquid viscosity, change liquid volume in magnetic conduction cylinder body, make piston rod drive the piston up-down of accumulator, thus to pipeline supercharging or decompression, finally reach the object of absorption pressure pulsation.
Chinese patent CN101476571B discloses a kind of parameter self-adapting and regulation leather bag type hydraulic accumulator, relate to a kind of variable element leather bag type hydraulic energy-accumulating element controlled based on DSP, inflation pressure, volume, the damping of work fluid and import damping can be changed online.This invention has been separated out a magnetorheological sap cavity in bag type accumulator inside, has installed field coil additional, detects oil liquid pressure pulsation by pressure transducer, utilizes DSP to control the inflation pressure of air cavity and the electric current by field coil.This invention applies the damping constant in the working principle change accumulator of MR damper, thus reaches the object of the pressure pulsation of suction line.
At present variable element being changed to the patent of the accumulator vibration damping aspect of demand with adaptation condition, is that, compared with diaphragm accumulator, it is dynamic corresponding poor, is difficult to the demand meeting High-frequency absorber mostly based on bag type accumulator.In addition, most of vibration damper needs dither in real-time detecting system or vibration, and auxiliary excellent control algorithm, just can reach final purpose, this is all very high to the requirement of sensing detection element and control algorithm, implements difficulty larger.
Summary of the invention
The invention provides one to change according to system condition, change the pressure drag type pressure feedback half initiatively wideband vibration damper of running parameter in real time.The present invention utilizes pressure drag material, in real time the pressure pulsation in pipeline is converted to the curent change in magnetic flow liquid field coil, and then cause the damping change of magnetic flow liquid, to realize partly changing resistance of shock absorber on one's own initiative, with the effect of the wideband vibration that is inhibited.
In order to solve the technical problem of above-mentioned existence, the present invention is achieved by the following technical solutions:
A kind of pressure drag type pressure feedback half initiatively wideband vibration damper, it is mainly made up of upper end cap 1, housing 4, barrier film 5, valve seat 6, stationary barrier 7, active clapboard 9, field coil safety cover 8, lower end cap 11, pressure drag component 10, field coil 15 and external circuits;
Described upper end cap 1 and lower end cap 11 are arranged on top and the bottom of housing 4 respectively; Barrier film 5 be arranged on housing 4 on fixed along place by upper end cap 1; Valve seat 6 is embedded on housing 4 inwall at the bottom hot pressing dress of housing 4 inner septum 5; Housing 4 inwall in barrier film 5 bottom is axially arranged with guiding groove along housing 4, and active clapboard 9 is arranged in guiding groove and can moves up and down along guiding groove, and the central annular region of described stationary barrier 7 has several axial damping hole;
Form three cavitys in described housing 4 altogether, be respectively air cavity 16, magnetorheological sap cavity 14 and oil pocket 12 from top to bottom; Described air cavity 16 is surrounded by upper end cap 1 and barrier film 5 and is formed, and upper end cap 1 is provided with gas charging valve 2; Described magnetorheological sap cavity 14 is surrounded by barrier film 5 and active clapboard 9 and is formed; Described oil pocket 12 is surrounded by active clapboard 9 and lower end cap 11 and is formed, and the housing 4 in described oil pocket 12 has a hole, and pressure drag component 10 is arranged on tapping on housing 4 outer wall; Described pressure drag component 10 is made up of pressure drag material 17, strain resistor 18, fittings body 19 and protecting jacket 20, pressure drag material 17 and strain resistor 18 are structure as a whole and are arranged in protecting jacket 20, described protecting jacket 20 is fixed in fittings body 19, and fittings body 19 is arranged on the outer wall of housing 4;
Described field coil 15 is wrapped in the groove of housing 4 outer wall, and described field coil 15 outside installs field coil safety cover 8 additional;
Described external circuits is made up of ABAP Adapter 27, fixed value resistance 23, strain resistor 18 and field coil 15, and wherein fixed value resistance 23 is integrated on socket 22, then is linked in ABAP Adapter 27; Field coil 15 one end is connected in series via protecting jacket 20 one end with the strain resistor 18 in pressure drag component 10; the other end of strain resistor 18 and fixed value resistance 23 one end are connected in series, and fixed value resistance 23 the other end is connected with positive pole with the negative pole of ABAP Adapter 27 respectively with the other end of field coil 15.In actual applications, described fixed value resistance 23 is integrated on external socket 22 together with ABAP Adapter 27.
Described pressure drag material 17 is single crystal silicon diaphragm, is arranged in protecting jacket 20; Described protecting jacket 20 is non-magnetic metallic material, is fixed in fittings body 19 with the form be threaded; Described fittings body 19 is welded on the below of shock absorber casing 4 unit with grooves in outer wall.
A kind of pressure drag type pressure feedback half of the present invention initiatively wideband vibration damper, the method that its semi-active vibration control realizes is: the lower end cap 11 that described vibration damper passes through is arranged in hydraulic system, when there is pressure pulsation in system, this pressure pulsation is delivered in oil pocket 12 by filler opening, and acts on the bottom surface of active clapboard 9; The pressure change of fluid makes the specific resistance of strain resistor 18 in pressure drag component 10 change thereupon, and then the electric current in field coil 15 is changed thereupon, in magnetorheological sap cavity 14, therefore the viscosity of magnetic flow liquid change, and the flow damping of fluid in oil pocket 12 also changes thereupon; Because magnetic flow liquid makes the adjustable extent of damping become large, described a kind of pressure drag type pressure feedback half initiatively wideband vibration damper also has the ability of the pressure pulsation absorbing more wideband thereupon.
Described pressure drag type pressure feedback half initiatively wideband vibration damper can multiplely be arranged on a set of socket 22 simultaneously, when vibration damper mounting point is different, can realize the object of multipoint pressure pulsation in absorption liquid hydraulic pipe.
Owing to adopting technique scheme, a kind of pressure drag type pressure feedback half provided by the invention initiatively wideband vibration damper, can partly adapt on one's own initiative and absorb wider frequency and amplitude change pressure pulsation, and owing to being directly integrated in vibration damper by pressure drag component 10, structure of the present invention is also comparatively simply compact.Meanwhile, owing to can install this pressure drag type pressure multiple feedback half initiatively wideband vibration damper on a set of socket 22, the present invention is also specially adapted to the operating mode eliminating many places pressure pulsation in complex system pipeline.
A kind of pressure drag type pressure feedback half provided by the invention initiatively wideband vibration damper compared with prior art, has such beneficial effect:
1, owing to having opened multiple damping hole in the center region annular of stationary barrier, the magnetic flow liquid in the present invention is made to be the working principle of extrusion flow dynamic formula, the effect changing damping force is better than the magnetorheological damping vibration damper utilizing other working principles to design, therefore, the effect of absorption pressure pulsation of the present invention is also better;
2, due to pressure drag material is integrated in vibration damper inside, pressure drag material detected pressures is pulsed, electric current in coil is changed with self feed back form, achieve the semi-active control of half active absorption to pressure pulsation and vibration, without the need to installing high-precision pressure sensor, therefore, without the need to controlling the electric current in field coil by the control algorithm of complexity, simple and compact for structure;
3, owing to separating with barrier film between air cavity in the present invention 16 and magnetorheological sap cavity 14, similar with the working principle of diaphragm accumulator, relative to bag type accumulator, fast response time, can absorbing high-frequency pressure pulsation better;
4, because the external power supply in the present invention is not integrated in vibration damper, therefore this vibration damper multiple can be connected on a set of socket simultaneously use, can the multipoint pressure pulsation in hydraulic plumbing system be controlled, flexible and convenient to use.
The present invention can according to the change of vibration damper entrance oil liquid pressure pulsation, by pressure pulsation automatic feedback in real time, and then the size of electric current in change field coil, then the damping constant of magnetic flow liquid is changed, make the pressure pulsation of more wideband in vibration damper energy absorption liquid press pump and hydraulic pipe line, overcome the defect that traditional accumulator damping frequency range is narrow.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper;
Fig. 2 is the partial enlargement half sectional view I of pressure drag component in a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper;
Fig. 3 is in a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper, the sectional view of field coil safety cover;
Fig. 4 is in a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper, the sectional view at inner walls guiding groove place;
Fig. 5 is in a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper, the structure diagram of active clapboard;
Fig. 6 is in a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper, the structure diagram of stationary barrier;
Fig. 7 is in a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper, the sectional view of the lower end cap of band external flange;
Fig. 8 is the semi-active control principle sketch of a kind of pressure drag type pressure feedback half of the present invention active wideband vibration damper.
In figure: 1, end cap, 2, gas charging valve, 3, screw; 4, housing, 5, barrier film, 6, valve seat; 7, stationary barrier, 8, field coil safety cover, 9, active clapboard; 10, pressure drag component, 11, tapped lower end cap, 12, oil pocket; 13, bolt hole, 14, magnetorheological sap cavity, 15, field coil; 16, air cavity, 17, pressure drag material, 18, strain resistor; 19, fittings body, 20, protecting jacket, 21, the lower end cap of band external flange; 22, socket; 23, fixed value resistance, 24, pipeline, 25, pumping source; 26, fuel tank, 27, ABAP Adapter.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As Figure 1-Figure 8, a kind of pressure drag type pressure feedback half initiatively wideband vibration damper, as shown in Figure 1, this vibration damper is mainly made up of upper end cap 1, housing 4, barrier film 5, valve seat 6, stationary barrier 7, active clapboard 9, field coil safety cover 8, lower end cap 11, pressure drag component 10, field coil 15 and external circuits its mechanical body; Tapped lower end cap 11 is adopted in the present embodiment, the upper and lower two ends of described housing 4 outer wall are provided with the flange plate of protrusion, for installing end cap 1 and tapped lower end cap 11, according to different installation requirements, the lower end cap 21 of band external flange as shown in Figure 7 also can be adopted.Groove between two flanges on housing 4 outer wall is for being wound around field coil 15; Described upper end cap 1 and tapped lower end cap 11 are fixed on top and the bottom of housing 4 respectively with six screws 3; Barrier film 5 be arranged on housing 4 on locate fixing along place by upper end cap 1; Valve seat 6 is embedded on housing 4 inwall at the bottom hot pressing dress of housing 4 inner septum 5; Housing 4 inwall in barrier film 5 bottom is axially arranged with four direction recess along housing 4, as shown in Figure 4, active clapboard 9 circumference uniform distribution is provided with four protuberances, as shown in Figure 5, active clapboard 9 is inlaid in direction recess and can moves up and down along guiding groove, and the length of direction recess is the range of active clapboard 9; The central annular region of described stationary barrier 7 has several axial damping hole; Described active clapboard 9 is lightweight material, such as carbon fiber, moving up and down neatly; Form three chambeies in described housing 4 altogether, be respectively air cavity 16, magnetorheological sap cavity 14 and oil pocket 12 from top to bottom; Described air cavity 16 is surrounded by upper end cap 1 and barrier film 5 and is formed, and upper end cap 1 is provided with gas charging valve 2, is filled with nitrogen by gas charging valve 2; Described magnetorheological sap cavity 14 is surrounded by barrier film 5 and active clapboard 9 and is formed, described stationary barrier 7 is positioned at wherein and is arranged on housing 4 inwall, on stationary barrier 7, center zone circular has several axial hole as damping hole, as shown in Figure 6, magnetic flow liquid is by current downflow on the damping hole on stationary barrier 7 in this chamber, and described stationary barrier 7 is non-magnetic metallic material; Described oil pocket 12 is surrounded by active clapboard 9 and tapped lower end cap 11 and is formed, and the housing 4 in described oil pocket 12 has a hole, and pressure drag component 10 is arranged on tapping on housing 4 outer wall; Described pressure drag component 10 is made up of pressure drag material 17, strain resistor 18, fittings body 19 and protecting jacket 20, pressure drag material 17 and strain resistor 18 are structure as a whole and are arranged in protecting jacket 20, described protecting jacket 20 is fixed in fittings body 19, and fittings body 19 is arranged on the outer wall of housing 4;
Described field coil 15 is wrapped in the groove of housing 4 outer wall, and described field coil 15 outside installs field coil safety cover 8 additional; Field coil protecting sheathing 8 is made up of two and half drum-shaped anchor ears, and as shown in Figure 3, be connected to each other by multiple bolt, bolt quantity is determined by safety cover length.
As shown in Figure 2, described pressure drag component 10 is made up of pressure drag material 17, strain resistor 18, fittings body 19 and protecting jacket 20; Described strain resistor 18 microelectronic process engineering is formed on single crystal silicon diaphragm, and design makes the specific resistance of strain resistor 18 reduce with the increase of pressure; Described protecting jacket 20 is non-magnetic metallic material, is fixed in fittings body 19 with the form be threaded; Described fittings body 19 is welded on the below of shock absorber casing 4 unit with grooves in outer wall.Described pressure drag material 17 is single crystal silicon diaphragm, is arranged in protecting jacket 20; Described protecting jacket 20 is non-magnetic metallic material, is fixed in fittings body 19 with the form be threaded; Described fittings body 19 is welded on the below of shock absorber casing 4 unit with grooves in outer wall.Described external circuits is by ABAP Adapter 27, and fixed value resistance 23, strain resistor 18 and field coil 15 are formed, and wherein fixed value resistance 23 is integrated on socket 22, then are linked in ABAP Adapter 27.Field coil 15 one end is connected in series via protecting jacket 20 one end with the strain resistor 18 in pressure drag component 10; the other end of strain resistor 18 and fixed value resistance 23 one end are connected in series, and fixed value resistance 23 the other end is connected with positive pole with the negative pole of ABAP Adapter 27 respectively with the other end of field coil 15.
And control the external circuit that vibration damper changes electric current in field coil 15 in real time, then by ABAP Adapter 27, strain resistor 18 in fixed value resistance 23 and vibration damper mechanical body is formed with field coil 15, and wherein fixed value resistance 23 is integrated on socket 22, then is linked in ABAP Adapter 27.
Present invention employs above-mentioned structural type, when there is pressure pulsation in system, this pressure pulsation can be delivered in vibration damper oil pocket 12 by filler opening, and acts on the bottom surface of active clapboard 9.Simultaneously, oil liquid pressure change makes the oil liquid pressure contacted with pressure drag material 17 change, on pressure drag material 17, the specific resistance of strain resistor 18 changes thereupon, and then the electric current in field coil 15 is changed thereupon, in magnetorheological sap cavity 14, therefore the viscosity of magnetic flow liquid change, the flow damping of fluid in oil pocket 12 also changes thereupon, thus absorbs the pressure pulsation of hydraulic fluid port fluid.
Working principle of the present invention is as follows:
A kind of for the present invention pressure drag type pressure feedback half active wideband vibration damper is arranged in hydraulic plumbing system, the magnetorheological damping parameter of pressure drag type pressure feedback half active wideband vibration damper can be adjusted in real time, to adapt to the pressure pulsation of fluid, the effect of elimination fluid wideband pressure pulsation is strengthened greatly.
In the pipeline 24 being provided with magnetorheological damping diaphragm accumulator, pumping source 25 works, the high pressure oil exported has obvious pressure pulsation, when the reason that the pressure of fluid in pipeline 24 is pulsed due to pumping source 25 outlet pressure is higher than normal value, the oil liquid pressure entering oil pocket 12 through hydraulic fluid port raises, the pressure acting on active clapboard 9 increases, active clapboard 9 moves, and the magnetic flow liquid extruded in magnetorheological sap cavity 14, magnetic flow liquid is upwards flowed and by the damping hole on stationary barrier 7, promoting barrier film 5 makes the volume of gas in air cavity 16 reduce, store the energy of high pressure.Meanwhile, pressure in oil pocket 12 acts on single crystal silicon diaphragm pressure drag material 17 on the surface, actuating pressure increases with the pressure of fluid own, strain resistor 18 characteristic due to design on pressure drag material 17 is that specific resistance increases with oil liquid pressure and reduces, therefore, at strain resistor 18, field coil 15, in the external circuits that fixed value resistance 23 and ABAP Adapter 27 form, the ER effect in field coil 15 is large, and the magnetic intensity that field coil 15 produces increases.Flow to according to the magnetic flow liquid between stationary barrier 7 and barrier film 5, the deformation direction of the magnetic direction that field coil 15 produces and barrier film 5, the mode of operation of magnetic flow liquid extrusion flow dynamic formula can be formed, magnetorheological fluid damp increases with magnetic intensity and increases, thus makes vibration damper larger damping also can be utilized to consume a part of vibrational energy outside storage pressure; When fluid in pipeline 24 pressure due to the reason of pressure pulsation lower than normal value time, by above-mentioned working principle, the volume of air cavity 16 increases, promote magnetic flow liquid to be flowed downward by the damping hole on stationary barrier 7 in magnetorheological sap cavity 14, active clapboard 9 also moves downward under the promotion of magnetic flow liquid, fluid is in hydraulic fluid port feed line 24, and vibration damper completes the process of the vibrational energy that release stores.Meanwhile, due to oil liquid pressure reduction, the specific resistance increase of strain resistor 18, in field coil 15, electric current reduces, and magnetic intensity reduces, and magnetorheological fluid damp reduces, and the consumption of energy in vibration damper is lowered, the oil liquid pressure reduced in the quick compensation conduit 24 of energy.
Claims (6)
1. a pressure drag type pressure feedback half initiatively wideband vibration damper, is characterized in that: it is mainly made up of upper end cap (1), housing (4), barrier film (5), valve seat (6), stationary barrier (7), active clapboard (9), field coil safety cover (8), lower end cap (11), pressure drag component (10), field coil (15) and external circuits;
Described upper end cap (1) and lower end cap (11) are arranged on top and the bottom of housing (4) respectively; Barrier film (5) be arranged on housing (4) on along place by upper end cap (1) fix; Valve seat (6) is embedded on housing (4) inwall at the bottom hot pressing dress of housing (4) inner septum (5); Housing (4) inwall in barrier film (5) bottom is axially arranged with guiding groove along housing (4), active clapboard (9) is arranged in guiding groove and can moves up and down along guiding groove, and the central annular region of described stationary barrier (7) has several axial damping hole;
Form three cavitys altogether in described housing (4), be respectively air cavity (16), magnetorheological sap cavity (14) and oil pocket (12) from top to bottom; Described air cavity (16) is surrounded by upper end cap (1) and barrier film (5) and is formed, and upper end cap (1) is provided with gas charging valve (2); Described magnetorheological sap cavity (14) is surrounded by barrier film (5) and active clapboard (9) and is formed; Described oil pocket (12) is surrounded by active clapboard (9) and lower end cap (11) and is formed, housing (4) in described oil pocket (12) has a hole, and pressure drag component (10) is arranged on tapping on housing (4) outer wall; Described pressure drag component (10) is made up of pressure drag material (17), strain resistor (18), fittings body (19) and protecting jacket (20), pressure drag material (17) and strain resistor (18) are structure as a whole and are arranged in protecting jacket (20), described protecting jacket (20) is fixed in fittings body (19), and fittings body (19) is arranged on the outer wall of housing (4);
Described field coil (15) is wrapped in the groove of housing (4) outer wall, and described field coil (15) outside installs field coil safety cover (8) additional;
Described external circuits is made up of ABAP Adapter (27), fixed value resistance (23), strain resistor (18) and field coil (15), wherein fixed value resistance (23) is integrated on socket (22), then is linked in ABAP Adapter (27); Field coil (15) one end is connected in series via protecting jacket (20) one end with the strain resistor (18) in pressure drag component (10); the other end and fixed value resistance (23) one end of strain resistor (18) are connected in series, and fixed value resistance (23) the other end is connected with positive pole with the negative pole of ABAP Adapter (27) respectively with the other end of field coil (15).In actual applications, described fixed value resistance (23) is integrated on external socket (22) together with ABAP Adapter (27).
2. a kind of pressure drag type pressure feedback half according to claim 1 initiatively wideband vibration damper, is characterized in that: described pressure drag material (17) is single crystal silicon diaphragm, is arranged in protecting jacket (20); Described protecting jacket (20) is non-magnetic metallic material, is fixed in fittings body (19) with the form be threaded; Described fittings body (19) is welded on the below of shock absorber casing (4) unit with grooves in outer wall.
3. a kind of pressure drag type pressure feedback half according to claim 1 and 2 initiatively wideband vibration damper, is characterized in that: described lower end cap (11) is tapped lower end cap.
4. a kind of pressure drag type pressure feedback half according to claim 1 and 2 initiatively wideband vibration damper, is characterized in that: described lower end cap (11) is the lower end cap of band external flange.
5. a kind of pressure drag type pressure feedback half according to claim 1 initiatively wideband vibration damper, is characterized in that: described active clapboard (9) is lightweight material.
6. a kind of pressure drag type pressure feedback half according to claim 1 initiatively wideband vibration damper, is characterized in that: described stationary barrier (7) is non-magnetic metallic material.
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| CN201410581923.0A CN104455902B (en) | 2014-10-27 | 2014-10-27 | A kind of pressure drag type pressure feedback half initiatively wideband vibration damper |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107084162A (en) * | 2017-05-12 | 2017-08-22 | 武汉理工大学 | A kind of input-output characteristic controllable hydraulic energy storage equipment |
| CN107246387A (en) * | 2017-06-28 | 2017-10-13 | 哈尔滨工程大学 | A kind of three screw pump based on diaphragm type vibration damping accumulation of energy structure |
| CN107559467A (en) * | 2017-08-01 | 2018-01-09 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN108297641A (en) * | 2018-03-28 | 2018-07-20 | 燕山大学 | A kind of energy regeneration vehicle shock absorber |
| CN109780361A (en) * | 2019-01-28 | 2019-05-21 | 大连大学 | A kind of pipeline wideband fluid pressure pulse damper |
| CN111706739A (en) * | 2020-06-24 | 2020-09-25 | 华中科技大学 | Frequency-division combined pressure pulsation attenuation device and method |
| CN113236703A (en) * | 2021-04-25 | 2021-08-10 | 四川大学 | Electrorheological fluid shock absorber with temperature self-adaptive characteristic |
| CN114458718A (en) * | 2022-01-18 | 2022-05-10 | 燕山大学 | Anti-settling magneto-rheological vibration absorber for high-pressure hydraulic pipeline system and working process of anti-settling magneto-rheological vibration absorber |
| CN115324982A (en) * | 2022-08-26 | 2022-11-11 | 中国人民解放军海军工程大学 | Self-adaptive hydraulic muffler device |
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