CN2605934Y - Active vibration absorbor with super magnetostrictive actuator - Google Patents
Active vibration absorbor with super magnetostrictive actuator Download PDFInfo
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- CN2605934Y CN2605934Y CN 03228667 CN03228667U CN2605934Y CN 2605934 Y CN2605934 Y CN 2605934Y CN 03228667 CN03228667 CN 03228667 CN 03228667 U CN03228667 U CN 03228667U CN 2605934 Y CN2605934 Y CN 2605934Y
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- linear bearing
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- 238000002955 isolation Methods 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model discloses an active vibration isolation device based on a giant magnetostrictive driver. Three step-shaped guide columns are installed in equal distance on the same circumference of a bottom plate; a linear bearing is arranged on the smaller end of every guide column; a locating bush is set outside of the linear bearing; the locating bushes of the three guide columns are connected respectively with an isolation platform through being fixed by a plurality of screws; the small ends of the guide columns on the upper end of the locating bush are set with springs and are tightened by nuts; a giant magnetostrictive driver is arranged in the centre of the bottom plate, an output rod of the driver, which is fixed by a clamping screw on the isolation platform, passes through the isolation platform; a vibration pick-up sensor bracket is arranged on the bottom plate, the top of the vibration pick-up sensor is arranged at the bottom of the isolation platform. As adopting the giant magnetostrictive driver and the linear bearing, the utility model has the advantages of large deformation amount, fast response, obvious effect of isolating the low frequency and ultra-low frequency, and wider isolation frequency band. The utility model can be used widely in precision machining, measurement, and the vibration field that has special requirement for vibration environment.
Description
Technical field
The utility model relates to isolation mounting, is a kind of active vibration isolation arrangement based on super-magnetostrictive drive.
Background technology
For strict special requirement such as processing, measurement and the use etc. of satisfying precision instrumentation to vibration environment, suppress the requirement of low frequency and superlow frequency vibrating especially effectively, traditional passive vibration isolation method can not reach its requirement and precision.From nineteen fifties, people begin systematically to study active vibration isolation arrangement and driver thereof.Along with the development of technology such as precision instrumentation, accurate measurement and Precision Machining, it has proposed extremely strict requirement to the vibration and the impact of environment.For example, the alignment requirements of high accuracy inertia type instrument has vibration acceleration and is controlled at 10
-6G in order to accomplish this point, must have high-precision vibration-isolating platform with interior environment.This high accuracy vibration-isolating platform not only requires ground vibration isolated as that machine run, vehicle travel, personnel walk about etc. causes, and also requirement can be eliminated rapidly as the pressure that acts on platform that air-conditioning air-flow, sound etc. cause.China still is in the starting stage in the research in this field, and for example, the highest vibrationproof rank of domestic precision instrument and equipment is that 5Hz (is equivalent to vibration acceleration and is about 1.8 * 10 for following 1.8 microns
-4G), this level of vibration that has been allowed considerably beyond high accuracy inertia type instrument timing signal.The used driver of active vibration isolation arrangement has following several, i.e. electromagnetic driver, marmem (SMA) driver, piezoelectric actuator, Pneumatic hydraulic driver.Wherein the power of electromagnetic driver, displacement have bigger non-linearly, are difficult to realize accurate control.The SMA frequency response is low, and is non-linear serious, is mainly used in thermal deformation at present and drives.Piezoelectric Driving is because driving force is little, deflection is little, is mainly used in flexible structure.Pneumatic and hydraulic-driven is not suitable for accurate vibration isolation because serious time-delay, sluggishness, crawl are arranged.
Summary of the invention
The utility model provides a kind of active vibration isolation arrangement based on super-magnetostrictive drive, behind employing super-magnetostrictive drive (GMA) and the linear bearing, makes this device have distortion greatly, and response is fast, and low frequency characteristic is good.
The technical solution adopted in the utility model is as follows:
1) five equilibrium is installed three step-like guiding right cylinders on the same circumference of base plate, each guiding right cylinder is than linear bearing is installed on the small end, the linear bearing outside is with positioning sleeve, the positioning sleeve of three guiding right cylinders is screwed respectively with vibration-isolating platform and is connected, and the guiding right cylinder of positioning sleeve upper end is than being with spring baffle ring, spring, spring baffle ring successively on from descending on the small end, tightening with fastening nut;
2) at the center of base plate super-magnetostrictive drive is housed, the take-off lever of driver passes vibration-isolating platform, is fixed on the vibration-isolating platform with holding screw;
3) the pick-up sensor stand is housed on base plate, the pick-up sensor is housed on the pick-up sensor stand, the pick-up sensor withstands on the vibration-isolating platform bottom surface.
Said super-magnetostrictive drive comprises that it is on the face of cylinder of the big boss of base that overcoat is fixed in, magnetostrictive rod is placed on the less boss of base central authorities, the skeleton that is wound with coil is enclosed within outside the magnetostrictive rod, magnetostrictive rod heads on take-off lever, be with pre-compressed spring on the bar of take-off lever boss, the fastening nut sky is enclosed within and cooperates with sleeve thread on the bar of boss and press on the pre-compressed spring.
The beneficial effect that the utlity model has is:
1) obvious to isolating low frequency and superlow frequency vibrating effect, and the frequency band broad of vibration isolation;
2) under complex incentive, can reach high-precision vibration isolation requirement;
3) be applicable to and have uncertain factor in the vibrating isolation system that especially system's input and system model have uncertain factor;
4) owing to adopt linear bearing, it has advantages such as deflection is big, and response is (can reach 0～3000 hertz) soon, and low frequency characteristic is good.Adopt the vibration level of the active vibration isolation arrangement of super-magnetostrictive drive can reach 10
-6G;
5) be applicable to complex environment, the highest adaptive temperature of giant magnetostrictive material is 400 ℃.
The vibration isolation field that the utility model can be widely used in Precision Machining, measurement and vibration environment be had specific (special) requirements.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model operation principle schematic diagram;
Fig. 3 is the structural representation of super-magnetostrictive drive of the present utility model.Among Fig. 1: 1 fastening nut, 2 spring baffle rings, 3 springs, 4 screws, 5 linear bearings
6 positioning sleeves, 7 rubber sheet gaskets, 8 guiding right cylinders, 9 super-magnetostrictive drives
10 pick-up sensor stands, 11 base plates, 12 pick-up sensors
Among 13 holding screws, 14 vibration-isolating platform Fig. 3: 9.1 bases, 9.2 rubber rings, 9.3 skeletons, 9.4 overcoats, 9.5 magnetostrictive rod (GMM
Rod) 9.6 coils, 9.7 take-off levers, 9.8 pre-compressed springs, 9.9 fastening nuts
The specific embodiment
As shown in Figure 1: it comprises:
1) five equilibrium is installed three step-like guiding right cylinders 8 on the same circumference of base plate 11, each guiding right cylinder 8 is than linear bearing 5 is installed on the small end, linear bearing 5 outsides are with positioning sleeve 6, the positioning sleeve 6 of three guiding right cylinders 8 uses screw 4 to fixedly connected respectively with vibration-isolating platform 14, positioning sleeve 6 times dress rubber sheet gasket 7, the guiding right cylinder 8 of positioning sleeve 6 upper ends than on the small end from down and on be with spring baffle ring 2, spring 3, spring baffle ring 2 successively, tighten with fastening nut 1;
2) at the center of base plate 11 super-magnetostrictive drive 9 is housed, the take-off lever of driver 9 passes vibration-isolating platform 14, is fixed on the vibration-isolating platform 14 with holding screw 13;
3) pick-up sensor stand 10 is housed on base plate 11, pick-up sensor 12 is housed on the pick-up sensor stand 10, the pick-up sensor withstands on vibration-isolating platform 14 bottom surfaces.
As shown in Figure 3, said super-magnetostrictive drive 9 comprises that it is on the face of cylinder of base 9.1 big boss that overcoat 9.4 is fixed in, magnetostrictive rod 9.5 is placed on the less boss of base 9.1 central authorities, the skeleton 9.3 that is wound with coil 9.6 is enclosed within outside the magnetostrictive rod 9.5, magnetostrictive rod 9.5 heads on take-off lever 9.7, be with pre-compressed spring 9.8 on the bar of take-off lever 9.7 boss, fastening nut 9.9 skies are enclosed within on the bar of boss with overcoat 9.4 threaded engagement and press on the pre-compressed spring 8.
As shown in Figure 2, the fundamental diagram of active vibration isolation system, the excitation that vibration-isolating platform 14 is subjected to focus produces vibration, pick-up sensor 12 is formed measuring circuit impression vibration and is converted vibration to the signal of telecommunication with secondary meter, the A/D converter effect is that the signal of telecommunication is converted to digital quantity by analog quantity, digital quantity is exported control signal by certain control algolithm in computer, D/A converter converts control signal to analog quantity by digital quantity, be not enough to drive super-magnetostrictive drive because signal at this moment is fainter, so also must be through a power amplifier.Through making driver produce action in the control signal input super-magnetostrictive drive 9 that amplifies, offset the vibration of vibration-isolating platform 14, thereby reached the purpose of vibration isolation.
The function of operation principle of 1 pair of this device and each several part is done detailed description in conjunction with the accompanying drawings, and fastening nut 1, check ring 2, spring 3, rubber sheet gasket 7 can be regulated the initial position of vibration-isolating platform 14, and plays the effect of buffer protection device.Holding screw 13 can be regulated the initial driving force of driver.For guaranteeing that vibration-isolating platform 14 is in vertical direction all the time, so the compactness after each design link all must accomplish to install as much as possible, guide upright post 8 all will be accomplished to closely cooperate with the assembling of base plate 11 and the assembling of guide upright post and vibration-isolating platform 14 as much as possible; Consider vibration-isolating platform 14 will with guide upright post 8 between relative motion is arranged, and guarantee good compactness again, so adopt linear bearing 5 that guide rail is connected with vibration-isolating platform 14, make guide upright post 8 when playing to vibration-isolating platform 14 vertically-guided effects, reduce again as far as possible and vibration-isolating platform 14 between friction, linear bearing 5 makes vibration-isolating platform 14 along guiding right cylinder 8 big displacement be arranged, and can bear bigger vibration.The system that fixedly needs vibration isolation during practical application above the vibration-isolating platform 14, so vibration-isolating platform 14 can be made specific structure fixedly to need the system of vibration damping.Pick-up sensor 12 is experienced the vibration of vibration-isolating platform 14 and is converted the signal of telecommunication to, and the signal of telecommunication is input to super-magnetostrictive drive 9 through handling to amplify.As shown in Figure 3, GMM rod 9.5 is in the magnetic field of excitation coil and bias coil 9.6 generations.During the electric current in changing excitation coil (during practical operation, this electric current is through the control signal behind the power amplifier), dilatation will take place in GMM rod 9.5, promotes guide rod 9.7 motions.So the current value size by coil in the control driver changes the magnetic field size that coil produces, and just can control the output displacement and the power of super-magnetostrictive drive.There is an annulus gap diametrically between the dividing plate at middle part, overcoat 9.4 holes and the take-off lever 9.7, dilatation takes place to allow GMM rod 9.5.This air gap and base 9.1, overcoat 9.4, take-off lever 9.7 constitute magnetic circuits, and the following aspects has been noted in the design of magnetic circuit: the one, shorten magnetic circuit as far as possible, the magnetic field that coil 9.6 is produced surround GMM rod 9.5 and slightly surplus get final product; The 2nd, base 1 is connected with magnetic circuit between the overcoat 9.4 and adopts simultaneously axially and dual mode radially; The 3rd, the magnetic conductive part of the other end of the GMM rod 9.5 relative with base 9.1 is integral with overcoat 9.4, form a dividing plate at external trepanning middle part, this dividing plate is divided into two functional areas to driver in the axial direction: an end is that magnetic field produces the zone, and the other end is pre-compressed spring 9.8 adjustment region; The 4th, the air gap between dividing plate hole and the take-off lever 9.7 reduces as far as possible, is taken as 0.1mm among the design; The 5th, adopt copper fastening nut 9.9 that magnetic circuit is opened circuit at this place, guarantee the magnetic flux of design magnetic circuit.Can adjust the precompression of 9.8 pairs of GMM rods 9.5 of spring by fastening nut 9.9.Suitable precompression can make the GMM magnetic domain when zero magnetic field as much as possible along with axial stress vertically direction arrange, do the time spent and just can obtain bigger axial stretching strain adding excitation field.Take-off lever 9.7 can be transported to vibration-isolating platform 14 (among Fig. 1) to the elongation that GMM rod 9.5 produces on the one hand, also can be when GMM rod retraction, and rely on spring pressure and return.The dilatation of GMM rod 9.5 causes the axial vibration of skeleton 9.3 when preventing drive operation, and a rubber washer 9.2 is housed between skeleton 9.3 and base 9.1.When base 1 and overcoat 9.4 were tightened, base, packing ring and overcoat will connect together, and can prevent the loosening of skeleton 9.3.Driver base 9.1 when work is fixed on the base plate shown in Figure 1 11.
Claims (2)
1. active vibration isolation arrangement based on super-magnetostrictive drive is characterized in that it comprises:
1) five equilibrium is installed three step-like guiding right cylinders (8) on the same circumference of base plate (11), each guiding right cylinder (8) is than linear bearing (5) is installed on the small end, linear bearing (5) outside is with positioning sleeve (6), the positioning sleeve (6) of three guiding right cylinders (8) uses screw (4) to fixedly connected respectively with vibration-isolating platform (14), and the guiding right cylinder (8) of positioning sleeve (6) upper end is than being with spring baffle ring (2), spring (3), spring baffle ring (2) successively on from descending on the small end, tightening with fastening nut (1);
2) at the center of base plate (11) super-magnetostrictive drive (9) is housed, the take-off lever of driver (9) passes vibration-isolating platform (14), is fixed on the vibration-isolating platform (14) with holding screw (13);
3) pick-up sensor stand (10) is housed on base plate (11), pick-up sensor (12) is housed on the pick-up sensor stand (10), pick-up sensor (12) withstands on vibration-isolating platform (14) bottom surface.
2. a kind of active vibration isolation arrangement according to claim 1 based on super-magnetostrictive drive, it is characterized in that: said super-magnetostrictive drive (9) comprises that it is on the face of cylinder of the big boss of base (9.1) that overcoat (9.4) is fixed in, magnetostrictive rod (9.5) is placed on the less boss of base (9.1) central authorities, the skeleton (9.3) that is wound with coil (9.6) is enclosed within outside the magnetostrictive rod (9.5), magnetostrictive rod (9.5) heads on take-off lever (9.7), be with pre-compressed spring (9.8) on the bar of take-off lever (9.7) boss, fastening nut (9.9) sky is enclosed within on the bar of boss with overcoat (9.4) threaded engagement and presses on the pre-compressed spring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228667 CN2605934Y (en) | 2003-01-27 | 2003-01-27 | Active vibration absorbor with super magnetostrictive actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228667 CN2605934Y (en) | 2003-01-27 | 2003-01-27 | Active vibration absorbor with super magnetostrictive actuator |
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| Publication Number | Publication Date |
|---|---|
| CN2605934Y true CN2605934Y (en) | 2004-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03228667 Expired - Fee Related CN2605934Y (en) | 2003-01-27 | 2003-01-27 | Active vibration absorbor with super magnetostrictive actuator |
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| CN (1) | CN2605934Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307780C (en) * | 2004-03-19 | 2007-03-28 | 浙江大学 | Phase change temp controlling super magneto strictive extension microshifting actuator |
| CN101609341B (en) * | 2008-06-18 | 2011-02-09 | 中国科学院自动化研究所 | Active vibration isolation control platform |
| CN103143497A (en) * | 2013-03-29 | 2013-06-12 | 哈尔滨工业大学 | Giant magnetostictive hydraulic cylinder-type transducer |
| CN103143496A (en) * | 2013-03-29 | 2013-06-12 | 哈尔滨工业大学 | Hydraulic transmission ultrasonic transducing device |
| CN105644291A (en) * | 2016-03-24 | 2016-06-08 | 厦门理工学院 | Novel fully-active suspension apparatus and vehicle |
-
2003
- 2003-01-27 CN CN 03228667 patent/CN2605934Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307780C (en) * | 2004-03-19 | 2007-03-28 | 浙江大学 | Phase change temp controlling super magneto strictive extension microshifting actuator |
| CN101609341B (en) * | 2008-06-18 | 2011-02-09 | 中国科学院自动化研究所 | Active vibration isolation control platform |
| CN103143497A (en) * | 2013-03-29 | 2013-06-12 | 哈尔滨工业大学 | Giant magnetostictive hydraulic cylinder-type transducer |
| CN103143496A (en) * | 2013-03-29 | 2013-06-12 | 哈尔滨工业大学 | Hydraulic transmission ultrasonic transducing device |
| CN103143497B (en) * | 2013-03-29 | 2014-12-10 | 哈尔滨工业大学 | Giant magnetostictive hydraulic cylinder-type transducer |
| CN103143496B (en) * | 2013-03-29 | 2015-04-15 | 哈尔滨工业大学 | Hydraulic transmission ultrasonic transducing device |
| CN105644291A (en) * | 2016-03-24 | 2016-06-08 | 厦门理工学院 | Novel fully-active suspension apparatus and vehicle |
| CN105644291B (en) * | 2016-03-24 | 2019-12-03 | 厦门理工学院 | Full Active suspension device and automobile |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |