CN106768288B - A kind of high precision high rigidity heavy load piezoelectric type decoupling microvibration measuring system - Google Patents
A kind of high precision high rigidity heavy load piezoelectric type decoupling microvibration measuring system Download PDFInfo
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- CN106768288B CN106768288B CN201611103092.1A CN201611103092A CN106768288B CN 106768288 B CN106768288 B CN 106768288B CN 201611103092 A CN201611103092 A CN 201611103092A CN 106768288 B CN106768288 B CN 106768288B
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- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000013461 design Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000013480 data collection Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 70
- 238000007906 compression Methods 0.000 claims description 70
- 230000005540 biological transmission Effects 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 20
- 238000010008 shearing Methods 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000017105 transposition Effects 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 230000003534 oscillatory effect Effects 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 229910000737 Duralumin Inorganic materials 0.000 claims description 3
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000011900 installation process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims 1
- 238000012546 transfer Methods 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000000470 constituent Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000003012 network analysis Methods 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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Abstract
The invention discloses a kind of high precision high rigidity heavy load piezoelectric types to decouple microvibration measuring system, and whole system is demarcated five parts of disk and Data collection and precessing system and formed by construction module, core sensor group module, loading disk；Core sensor group module is divided into four longitudinal direction-radial transducers and four tangential sensors in longitudinal direction-, and sensor group is located between loading disk and bottom plate in the longitudinal direction, in transverse direction between interior octagon side plate and outer panel, and is bolted；The piezoelectric effect of piezoelectric ceramic piece, simple structure is utilized in sensor design, and performance is stablized, and measurement accuracy is high and easy to assembly.The present invention realizes multiple targets such as big geometric dimension, heavy load, high rigidity, high-precision and decoupling measurement simultaneously, and demarcates simply, and the frequency range of measurement is big, and Measurement reliability is high.
Description
Technical field
The present invention relates to a kind of high precision high rigidity heavy load piezoelectric types to decouple microvibration measuring system, can be used for space flight
Vibration signal of the large-scale disturbing load for disturbing vibration component on six-freedom degree carries out dynamic measurement inside device.
Background technique
Current spacecraft belongs to large-scale flexible expansion mechanism mostly, and has a large amount of optical element, they are right
Pointing accuracy and stability propose very high requirement.Influencing satellite shake and the main of attitude stability includes external force of environment
Interference, attitude maneuver, the factors such as disturbing moment of movable part on star.In modern spacecraft attitude control system, control force
Square gyro and solar wing driving mechanism etc. are the critical elements in its control system, they are providing the same of necessary control power
When, it can also cause some nuisance vibrations.These vibrations will be greatly reduced the performance indicator of precision instrument in space, thus measure and
The dynamic characteristic for analyzing the disturbance of spacecraft payload improves the gesture stability essence of spacecraft for analyzing and eliminating disturbance
Degree and the safe design for reinforcing spacecraft have very important engineering significance.
Due to the continuous development of China's aerospace industry, the specification of spacecraft constantly increases, the ruler of space flight internal activity component
It is very little also constantly to increase, vibration characteristic is disturbed to precise measurement large component, it is necessary to be designed larger sized ergograph, but be surveyed
Power platform can decline rapidly with its rigidity of the increase of size, cause its effective frequency range to narrow, tend not to disturb higher frequency band
Vibration is effectively measured.Meanwhile existing microvibration measuring technology is typically only capable to measure six space force components and be coupled
Data-signal afterwards needs just obtain by complicated software post-processing required as a result, moreover, the calibration of coupling ergograph
Process is complicated, and the error of Data Post is also larger.In summary in order to solve this series of contradiction and insufficient, it is necessary to design
One can take into account the ergograph that geometric dimension and the rigidity of structure are measured by decoupling may be implemented out, just vigorously sent out with meeting China
The needs of aerospace engineering in exhibition.
So far both at home and abroad there is not yet high precision high rigidity heavy load piezoelectric type decouples micro- vibration under this related geometric dimension
The reported in literature of dynamic measuring system.
Summary of the invention
The technical problem to be solved by the present invention is overcoming existing ergograph undersized, rigidity is too low and calibration process is multiple
It is miscellaneous, it not can display real-time the deficiency for disturbing vibration power, a kind of high precision high rigidity heavy load piezoelectric type decoupling microvibration measuring system be provided
System can directly measure six sharing parts of the load that shake table center large size disturbs vibration source generation, run for analyzing spacecraft
Cheng Zhong, dynamic characteristic of the disturbing source on the six-freedom degree of space, to improve the attitude control accuracy of spacecraft and reinforcing space flight
The safe design of device provides reliable test data.
The invention solves technical solutions used by its technical problem to be: a kind of high precision high rigidity heavy load piezoelectric type
Decouple microvibration measuring system, including construction module 1, groups of sensor 2, loading disk 3, demarcate disk 4 and data acquisition and
Processing system 5；Construction module 1 by bottom plate 1.1, the first outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3,
4th outer panel 1.2.4, the first tilt prop 1.3.1, the second tilt prop 1.3.2, third tilt prop 1.3.3, the 4th tilt prop
1.3.4, angle fillet 1.5.1 on interior octagon plate 1.4, first, angle fillet 1.5.2 on second, triangle in third
Cover board 1.5.3, angle fillet 1.5.4, the first A type link block 1.6.1, the 2nd A type link block 1.6.2, the 3rd A type on the 4th
Link block 1.6.3, the 4th A type link block 1.6.4, the first Type B link block 1.7.1, the second Type B link block 1.7.2, third Type B
Link block 1.7.3, the 4th Type B link block 1.7.4 composition；Groups of sensor 2 is divided for four 2.1 Hes of longitudinal direction-radial transducer
The tangential sensor 2.2 in four longitudinal directions-, wherein four longitudinal direction-radial transducers 2.1 are located at interior 1.4 outside table of octagon plate
On four 90 degree of directions side in face, tightened with loading disk 3, bottom plate 1.1, interior octagon plate 1.4 by bolt, with the first outer panel
1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3, the 4th outer panel 1.2.4 pass through the first A type link block respectively
1.6.1, the 2nd A type link block 1.6.2, the 3rd A type link block 1.6.3, the 4th A type link block 1.6.4 are connected with；Four
Longitudinal-tangential sensor 2.2 is located on four 45 degree of directions side of interior 1.4 outer surface of octagon plate, with loading disk 3,
Bottom plate 1.1, interior octagon plate 1.4 are tightened by bolt, with first tilt prop 1.3.1 the second tilt prop 1.3.2 third tilt prop
1.3.3 the 4th tilt prop 1.3.4 passes through the first Type B link block 1.7.1, the second Type B link block 1.7.2, the connection of third Type B respectively
Block 1.7.3, the 4th Type B link block 1.7.4 are connected with；Longitudinal direction-radial transducer 2.1 is made of seven parts, i.e. sensor
Bottom 2.1.1, first sensor side plate 2.1.2, second sensor side plate 2.1.3, sensor core 2.1.4, bottom tension and compression piece
2.1.5, side tension and compression piece 2.1.6 and circle power transmission gasket 2.1.7 composition；Longitudinal-tangential sensor 2.2 is also by seven part groups
At i.e. sensor bottom 2.2.1, first sensor side plate 2.2.2, second sensor side plate 2.2.3, sensor core 2.2.4, bottom
Tension and compression piece 2.2.5, side shearing piece 2.2.6 and rectangular power transmission gasket 2.2.7 composition；Longitudinal-tangential sensor 2.2 with it is vertical
To-radial transducer 2.1 the difference is that by the side tension and compression piece 2.1.6 in longitudinal direction-radial transducer 2.1 and round passing
Power gasket 2.1.7 is changed to side shearing piece 2.2.6 and rectangular power transmission gasket in longitudinal-tangential sensor 2.2 at same position
2.2.7, remaining structure is identical.Longitudinal direction-radial transducer sensor 2.1, longitudinal-tangential sensor 2.2 are passed according to structure
Force characteristic designs, and 2.1 mentality of designing of longitudinal direction-radial transducer is as follows: bottom tension and compression piece 2.1.5 is located at sensor bottom
2.1.1 between sensor core 2.1.4, sensor bottom 2.1.1 and sensor core 2.1.4 tighten to make bottom by six bolts
Portion's tension and compression piece 2.1.5 is compacted；Side tension and compression piece 2.1.6 be located at first sensor side plate 2.1.2 and sensor core 2.1.4 it
Between, first sensor side plate 2.1.2 and sensor core 2.1.4 tighten to make side tension and compression piece 2.1.6 quilt by four bolts
It compresses；Round power transmission gasket 2.1.7 is between second sensor side plate 2.1.3 and sensor core 2.1.4, second sensor side
Plate 2.1.3 and sensor core 2.1.4 tightens to be compacted round power transmission gasket 2.1.7 by four bolts；It is longitudinal-tangential
2.2 mentality of designing of sensor is as follows, and bottom tension and compression piece 2.2.5 is passed between sensor bottom 2.2.1 and sensor core 2.2.4
Sensor bottom 2.2.1 and sensor core 2.2.4 tightens to be compacted bottom tension and compression piece 2.2.5 by six bolts；It cuts side
2.2.6 is sliced between first sensor side plate 2.2.2 and sensor core 2.2.4, first sensor side plate 2.2.2 and sensing
Device core 2.2.4 tightens to be compacted side shearing piece 2.2.6 by four bolts；Rectangular power transmission gasket 2.2.7 is located at the
Between two sensor side plate 2.2.3 and sensor core 2.2.4, second sensor side plate 2.2.3 and sensor core 2.2.4 pass through four
A bolt is tightened to be compacted rectangular power transmission gasket 2.2.7；Round power transmission gasket 2.1.7 is geometric dimension and side tension and compression
Piece 2.1.6 is identical and rigidity and aluminium flake similar in piezoelectric patches, rectangular power transmission gasket 2.2.7 are that piece is sheared in geometric dimension and side
2.2.6 aluminium flake similar in identical and rigidity and piezoelectric patches, the two effect are the uniformity and consistency for guaranteeing power transmission；It is testing
In the process, first sensor bottom 2.1.1, second sensor bottom 2.2.1 and first sensor side plate 2.1.2, second sensor side
2.1.3,3rd sensor side plate 2.2.2, the 4th sensor side plate 2.2.3 are remained stationary because of being connected with construction module, the
The load that one sensor core 2.1.4, the source of being disturbed second sensor core 2.2.4 are transmitted can generate micro-displacement thus and piezoelectricity
Piece mutual extrusion or mutually shearing, measure the first bottom tension and compression piece 2.1.5 and the second bottom tension and compression piece 2.2.5 vertically
Axial force signal, side tension and compression piece 2.1.6 can measure horizontal radial force signal, and side shearing piece 2.2.6 can measure level
Tangential force signal；The tangential sensor 2.2 in four longitudinal directions-may be implemented four longitudinal directions-radial direction and passed by the designed mode of connection
For bottom tension and compression piece 2.2.5 to the vibration force along Z axis, survey of the piece 2.2.6 to oscillatory torque about the z axis is sheared in side in sensor 2.2
Amount；Groups of sensor 2 is connected by signal transmssion line with Data collection and precessing system 5；When small sample perturbations source generates vibration
When, groups of sensor 2 generates six piezoelectric signals, the sensitivity coefficient of six decouplings is obtained after demarcating to shake table,
Real-time six component spaces force signal can be obtained in the measurements after six acquisition channels will be assigned, to analyze by data
The vibration characteristics of network analysis disturbing source.
Further, in order to it is larger-size disturb vibration source carry out vibration measurement, the test platform architecture dimensioning
Very little also larger (long 1200mm, wide 1200mm, high 246.5mm), in order to guarantee that structure intrinsic frequency with higher must be as far as possible
The cavity in structure is reduced, based on this consideration, in the first outer panel 1.2.1, the second outer panel 1.2.2, third outer panel
1.2.3, the 4th outer panel 1.2.4, first tilt prop 1.3.1 the second tilt prop 1.3.2 third tilt prop 1.3.3, the 4th diagonal brace
There is no the place of sensor that need to install aluminium ingot additional between plate 1.3.4 and interior octagon plate 1.4 to tamp space, and uses ring at gap
Oxygen resin glue pours.Cavity at four angles of ergograph need to be handled with same method.
Further, in order to meet the requirements the rigidity of structure, sensor 2.1,2.2 uses case-hardened steel, remaining part
Dividing material is duralumin.
Further, in sensor assembling process, with bolt by piezoelectric patches group be pressed on first sensor bottom 2.1.1,
Between second sensor bottom 2.2.1 and first sensor core 2.1.4 second sensor core 2.2.4 and first sensor side plate
2.1.2, when between second sensor side plate 2.2.2 and first sensor core 2.1.4, second sensor core 2.2.4, it is ensured that pressure
The stress of electric piece is uniformly, therefore, need to guarantee that the pretightning force of each screw on the same mounting surface is phase with torque spanner
With.
Further, vibration test table installation process is as follows:
1) bolt is inserted by mounting structure module 1 from 1.1 lower surface of bottom plate, thus by outside the first outer panel 1.2.1, second
Side plate 1.2.2, third outer panel 1.2.3, the 4th outer panel 1.2.4, the first tilt prop 1.3.1, the second tilt prop 1.3.2,
Three tilt prop 1.3.3, the 4th tilt prop 1.3.4, it is fixed on bottom plate 1.1 with interior octagon plate 1.4, by bolt from bottom plate 1.1
Upper surface insertion, so that bottom plate 1.1 is fixed on ground；
2) groups of sensor 2 is installed, is pacified in the upper surface of first sensor bottom 2.1.1 and second sensor bottom 2.2.1
Dress piezoelectric patches positioning device simultaneously places the first bottom tension and compression piece 2.1.5 and the second bottom tension and compression piece 2.2.5 respectively, then at the first bottom
First sensor core 2.1.4 and second sensor core are placed respectively on portion's tension and compression piece 2.1.5 and the second bottom tension and compression piece 2.2.5
2.2.4 it and by six bolts tightens；Transposition make the side surface of first sensor core 2.1.4 and second sensor core 2.2.4 to
On, piezoelectric patches positioning device is installed in the face and places side tension and compression piece 2.1.6 and side shearing piece 2.2.6 respectively, then in side
First sensor side plate 2.1.2,3rd sensor side plate 2.2.2 are placed simultaneously on portion's tension and compression piece 2.1.6 and side shearing piece 2.2.6
It is tightened by four bolts；Transposition makes the surface of the opposite side of first sensor core 2.1.4 and second sensor core 2.2.4 again
Upwards, piezoelectric patches positioning device is installed in the face and places round power transmission gasket (2.1.7) and rectangular power transmission gasket respectively
2.2.7, then on round power transmission gasket 2.1.7 and rectangular power transmission gasket 2.2.7 place second sensor side plate 2.1.3 and the 4th
Sensor side plate 2.2.3 is simultaneously tightened by four bolts；So far groups of sensor 2 is installed；
3) groups of sensor 2 is fixed by bolts on bottom plate 1.1 and interior octagon plate 1.4, blending bolt passes through the
One A type link block 1.6.1, the 2nd A type link block 1.6.2, the 3rd A type link block 1.6.3, the 4th A type link block 1.6.4 difference
It connects, leads to the first outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3, the 4th outer panel 1.2.4
Cross the first Type B link block 1.7.1, the second Type B link block 1.7.2, third Type B link block 1.7.3, the 4th Type B link block 1.7.4
It is connected with the 4th tilt prop 1.3.4 of first tilt prop 1.3.1 the second tilt prop 1.3.2 third tilt prop 1.3.3；
4) space in structure is filled up with aluminium ingot and epoxy resin AB glue is used to pour, by angle fillet 1.5.1 on first,
Angle fillet 1.5.2 on second, angle fillet 1.5.3 in third, angle fillet 1.5.4 bolt and first on the 4th
Outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3, the 4th outer panel 1.2.4 and the first tilt prop 1.3.1
The 4th tilt prop 1.3.4 connection of second tilt prop 1.3.2 third tilt prop 1.3.3；
5) loading disk 3 and groups of sensor 2 are connected with, the assembly of entire ergograph is so far completed.Using
Modularized design, assembly is simple and process is reversible.
Further, if the hole location of ground mounting surface changes, pinboard can be installed additional to adapt to not in 1.1 lower part of bottom plate
Same ground mounting surface.
Further, the bolt that place coupling part is bolted in the needs must be in the range of intensity allows to the greatest extent
Amount is tightened, and to improve the rigidity of the measuring system, guarantees its measurement accuracy.
Further, due to piezoelectric patches self-characteristic can at any time and the variation of environment and change, to make measurement result
It drifts about, so needing periodically to demarcate ergograph.Calibration disk 4 is connected on loading disk 3 with screw in calibration,
It can be demarcated with hammering method or other scaling methods.
Compared with the prior art, the present invention has the following advantages:
(1) (long 1200mm, wide 1200mm, high 246.5mm) is able to maintain higher structure under so big geometric dimension
Rigidity, first natural frequency are more than 900Hz, and measurement accuracy can reach 0.01N and 0.001Nm.
(2) it is designed by the various combination of space layout and signal wire to sensor, can directly obtain and decouple
Six voltage signals, six component force of space letter can directly be measured by sensitivity coefficient obtained by calibrating in the channel in real time by being arranged
Number Fx、Fy、Fz、Mx、My、Mz。
(3) present invention using modularized design and assembles simple.
(4) measuring device of the present invention and measured test specimen separation, do not need be measured test specimen on installation optional equipment and
Sensor, does not influence the dynamic characteristic of test specimen, does not damage test specimen structure, test specimen can also normally make after test
With.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural exploded view of the embodiment of the present invention 1；
Fig. 3 is sensor schematic in the embodiment of the present invention 1；
Fig. 4 is sensor exploded view in the embodiment of the present invention 1.
Appended drawing reference meaning are as follows:
1 is construction module, and 2 be groups of sensor, and 3 be loading disk, and 4 be calibration disk, and 5 be data acquisition and processing (DAP) system
System；
1.1 be bottom plate, and 1.2.1 is the first outer panel, and 1.2.2 is the second outer panel, and 1.2.3 is third outer panel, 1.2.4
For the 4th outer panel, 1.3.1 is the first tilt prop, and 1.3.2 is the second tilt prop, and 1.3.3 is third tilt prop, 1.3.4 the
Four tilt props, 1.4 be interior octagon plate, and 1.5.1 is angle fillet on first, and 1.5.2 is angle fillet on second,
It 1.5.3 is angle fillet in third, 1.5.4 is angle fillet on the 4th, and 1.6.1 is the first A type link block, and 1.6.2 is
2nd A type link block, 1.6.3 are the 3rd A type link block, and 1.6.4 is the 4th A type link block, and 1.7.1 is the first Type B link block,
It 1.7.2 is the second Type B link block, 1.7.3 is third Type B link block, and 1.7.4 is the 4th Type B link block；
2.1 be longitudinal direction-radial transducer, and wherein 2.1.1 is sensor bottom, and 2.1.2 is first sensor side plate, 2.1.3
For second sensor side plate, 2.1.4 is sensor core, and 2.1.5 is bottom tension and compression piece, and 2.1.6 is side tension and compression piece, and 2.1.7 is
Round power transmission gasket；
2.2 be longitudinal-tangential sensor, and wherein 2.2.1 is sensor bottom, and 2.2.2 is first sensor side plate, 2.2.3
For second sensor side plate, 2.2.4 is sensor core, and 2.2.5 is bottom tension and compression piece, and 2.2.6 is that piece is sheared in side, and 2.2.7 is
Rectangular power transmission gasket.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of high precision high rigidity heavy load piezoelectric type decouples microvibration measuring system
System, comprising: construction module 1, groups of sensor 2, loading disk 3 demarcate disk 4 and Data collection and precessing system 5；Structure mould
Block 1 is by bottom plate 1.1, outer panel, tilt prop, interior octagon plate 1.4, upper angle fillet, A type link block, Type B link block group
At；Outer panel includes the first outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3 and the 4th outer panel
1.2.4；Tilt prop includes the first tilt prop 1.3.1, the second tilt prop 1.3.2, third tilt prop 1.3.3 and the 4th tilt prop
1.3.4；Upper angle fillet includes angle fillet 1.5.1 on first, angle fillet 1.5.2 on second, triangle in third
Angle fillet 1.5.4 on shape cover board 1.5.3 and the 4th；A type link block includes the first A type link block 1.6.1, the 2nd A type company
Meet block 1.6.2, the 3rd A type link block 1.6.3 and the 4th A type link block 1.6.4；Type B link block includes the first Type B link block
1.7.1, the second Type B link block 1.7.2, third Type B link block 1.7.3 and the 4th Type B link block 1.7.4；Groups of sensor 2
It is divided into the tangential sensor 2.2 of four longitudinal direction-radial transducers 2.1 and four longitudinal directions-, wherein four longitudinal direction-radial transducers 2.1
It is located on four 90 degree of directions side of interior 1.4 outer surface of octagon plate, the tangential sensor 2.2 in four longitudinal directions-distinguishes position
In on four 45 degree of directions side of interior 1.4 outer surface of octagon plate；Groups of sensor 2 and loading disk 3, bottom plate 1.1, interior eight
Side shape plate 1.4 is tightened by bolt, with the first outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3, the 4th
Outer panel 1.2.4 and the first tilt prop 1.3.1, the second tilt prop 1.3.2, third tilt prop 1.3.3, the 4th tilt prop 1.3.4
Pass through the first A type link block 1.6.1, the 2nd A type link block 1.6.2, the 3rd A type link block 1.6.3, the connection of the 4th A type respectively
Block 1.6.4, the first Type B link block 1.7.1, the second Type B link block 1.7.2, third Type B link block 1.7.3, the connection of the 4th Type B
Block 1.7.4 is connected with；Longitudinal direction-radial transducer 2.1 and longitudinal-tangential sensor 2.2 are made of seven parts, longitudinal-
2.1 constituent element of radial transducer includes first sensor bottom 2.1.1, first sensor side plate 2.1.2, second sensor side plate
2.1.3, first sensor core 2.1.4, the first bottom tension and compression piece 2.1.5, side tension and compression piece 2.1.6, round power transmission gasket
2.1.7, longitudinal-tangential 2.2 constituent element of sensor includes second sensor bottom 2.2.1,3rd sensor side plate 2.2.2, the
Four sensor side plate 2.2.3, second sensor core 2.2.4, the second bottom tension and compression piece, side shearing piece 2.2.6 and rectangular power transmission
Gasket 2.2.7；；Longitudinal-tangential sensor 2.2 is with longitudinal direction-radial transducer 2.1 the difference is that longitudinal-radial will pass
Side tension and compression piece 2.1.6 and circle power transmission gasket 2.1.7 in sensor 2.1 are changed to same position in longitudinal-tangential sensor 2.2
The side shearing piece 2.2.6 and rectangular power transmission gasket 2.2.7 at place, remaining structure are identical.Sensor module 2 is passed according to structure
Force characteristic designs, and 2.1 mentality of designing of longitudinal direction-radial transducer is as follows: bottom tension and compression piece 2.1.5 is located at sensor bottom
2.1.1 between sensor core 2.1.4, sensor bottom 2.1.1 and sensor core 2.1.4 tighten to make bottom by six bolts
Portion's tension and compression piece 2.1.5 is compacted；Side tension and compression piece 2.1.6 be located at first sensor side plate 2.1.2 and sensor core 2.1.4 it
Between, first sensor side plate 2.1.2 and sensor core 2.1.4 tighten to make side tension and compression piece 2.1.6 quilt by four bolts
It compresses；Round power transmission gasket 2.1.7 is between second sensor side plate 2.1.3 and sensor core 2.1.4, second sensor side
Plate 2.1.3 and sensor core 2.1.4 tightens to be compacted round power transmission gasket 2.1.7 by four bolts；It is longitudinal-tangential
2.2 mentality of designing of sensor is as follows, and bottom tension and compression piece 2.2.5 is passed between sensor bottom 2.2.1 and sensor core 2.2.4
Sensor bottom 2.2.1 and sensor core 2.2.4 tightens to be compacted bottom tension and compression piece 2.2.5 by six bolts；It cuts side
2.2.6 is sliced between first sensor side plate 2.2.2 and sensor core 2.2.4, first sensor side plate 2.2.2 and sensing
Device core 2.2.4 tightens to be compacted side shearing piece 2.2.6 by four bolts；Rectangular power transmission gasket 2.2.7 is located at the
Between two sensor side plate 2.2.3 and sensor core 2.2.4, second sensor side plate 2.2.3 and sensor core 2.2.4 pass through four
A bolt is tightened to be compacted rectangular power transmission gasket 2.2.7；Round power transmission gasket 2.1.7 is geometric dimension and side tension and compression
Piece 2.1.6 is identical and rigidity and aluminium flake similar in piezoelectric patches, rectangular power transmission gasket 2.2.7 are that piece is sheared in geometric dimension and side
2.2.6 aluminium flake similar in identical and rigidity and piezoelectric patches, the two effect are the uniformity and consistency for guaranteeing power transmission；It is testing
In the process, first sensor bottom 2.1.1 and second sensor bottom 2.2.1 and first sensor side plate 2.1.2, second sensor side
2.1.3,3rd sensor side plate 2.2.2, the 4th sensor side plate 2.2.3 are remained stationary because of being connected with construction module, the
The load that one sensor core 2.1.4, the source of being disturbed second sensor core 2.2.4 are transmitted can generate micro-displacement thus and piezoelectricity
Piece mutual extrusion or mutually shearing, measure the first bottom tension and compression piece 2.1.5 and the second bottom tension and compression piece 2.2.5 vertically
Axial force signal, side tension and compression piece 2.1.6 can measure horizontal radial force signal, and side shearing piece 2.2.6 can measure level
Tangential force signal；Four longitudinal direction-radial transducers 2.1 may be implemented four longitudinal directions-radial direction and passed by the designed mode of connection
In sensor 2.1 bottom tension and compression piece 2.1.5 to around X-axis and Y-axis oscillatory torque, side tension and compression piece 2.1.6 is to along X-axis and Y-axis
The measurement of vibration force；Four longitudinal direction-radial directions may be implemented by the designed mode of connection in the tangential sensor 2.2 in four longitudinal directions-
For bottom tension and compression piece 2.2.5 to the vibration force along Z axis, piece 2.2.6 is sheared to oscillatory torque about the z axis in side in sensor 2.2
Measurement；Groups of sensor 2 is connected by signal transmssion line with Data collection and precessing system 5；When small sample perturbations source generates vibration
When dynamic, groups of sensor 2 generates six piezoelectric signals, and the sensitivity system of six decouplings is obtained after demarcating to shake table
Number, can obtain real-time six component spaces force signal after assigning six acquisition channels, to pass through data in the measurements
The vibration characteristics of analysis system analysis disturbing source.
In order to carry out vibration measurement to larger-size vibration source of disturbing, the test platform architecture geometric dimension is also larger:
Long 1200mm, wide 1200mm, high 246.5mm, in order to guarantee that structure intrinsic frequency with higher must reduce to the greatest extent in structure
Cavity, based on this consideration, the first outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3, the 4th outside
Plate 1.2.4, the 4th tilt prop 1.3.4 of first tilt prop 1.3.1 the second tilt prop 1.3.2 third tilt prop 1.3.3 and interior eight side
There is no the place of sensor that need to install aluminium ingot additional between shape plate 1.4 to tamp space, and is poured at gap with epoxide-resin glue.It surveys
Cavity at four angles of power platform need to be handled with same method.
In order to meet the requirements the rigidity of structure, longitudinal direction-radial transducer 2.1 and longitudinal-tangential sensor, 2.2 are used
Case-hardened steel, rest part material are duralumin.
In sensor assembling process, piezoelectric patches group is pressed on first sensor bottom 2.1.1, second sensor with bolt
Bottom, 2.2.1 and first sensor core 2.1.4 second sensor core between 2.2.4 and first sensor side plate 2.1.2, second pass
Sensor side plate, 2.2.2 and first sensor core 2.1.4, second sensor core, when between 2.2.4, it is ensured that the stress of piezoelectric patches
It is that uniformly, therefore, need to guarantee that the pretightning force of each screw on the same mounting surface is identical with torque spanner.
Vibration test table installation process is as follows:
1) mounting structure module 1 will be inserted into bolt from 1.1 lower surface of bottom plate, thus by the first outer panel 1.2.1, second
Outer panel 1.2.2, third outer panel 1.2.3, the 4th outer panel 1.2.4, the first tilt prop 1.3.1, the second tilt prop 1.3.2,
Third tilt prop 1.3.3, the 4th tilt prop 1.3.4, it is fixed on bottom plate 1.1 with interior octagon plate 1.4, by bolt from bottom plate
1.1 upper surfaces insertion, so that bottom plate 1.1 is fixed on ground；
2) groups of sensor 2 is installed, is pacified in the upper surface of first sensor bottom 2.1.1 and second sensor bottom 2.2.1
Dress piezoelectric patches positioning device simultaneously places the first bottom tension and compression piece 2.1.5 and the second bottom tension and compression piece 2.2.5 respectively, then at the first bottom
First sensor core 2.1.4, and second sensor core are placed respectively on portion's tension and compression piece 2.1.5 and the second bottom tension and compression piece 2.2.5
2.2.4 it and by six bolts tightens；Transposition make the side surface of first sensor core 2.1.4 and second sensor core 2.2.4 to
On, piezoelectric patches positioning device is installed in the face and places side tension and compression piece 2.1.6 and side shearing piece 2.2.6 respectively, then in side
First sensor side plate 2.1.2,3rd sensor side plate 2.2.2 are placed simultaneously on portion's tension and compression piece 2.1.6 and side shearing piece 2.2.6
It is tightened by four bolts；Transposition makes the surface of the opposite side of first sensor core 2.1.4 and second sensor core 2.2.4 again
Upwards, piezoelectric patches positioning device is installed in the face and places circle power transmission gasket 2.1.7 and rectangular power transmission gasket 2.2.7 respectively,
Second sensor side plate 2.1.3 and the 4th sensor are placed on round power transmission gasket 2.1.7 and rectangular power transmission gasket 2.2.7 again
Side plate 2.2.3 is simultaneously tightened by four bolts；So far groups of sensor 2 is installed；
3) groups of sensor 2 is fixed by bolts on bottom plate 1.1 and interior octagon plate 1.4, blending bolt passes through the
One A type link block 1.6.1, the 2nd A type link block 1.6.2, the 3rd A type link block 1.6.3, the 4th A type link block 1.6.4 difference
It connects, leads to the first outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3, the 4th outer panel 1.2.4
Cross the first Type B link block 1.7.1, the second Type B link block 1.7.2, third Type B link block 1.7.3, the 4th Type B link block 1.7.4
It is connected with the 4th tilt prop 1.3.4 of first tilt prop 1.3.1 the second tilt prop 1.3.2 third tilt prop 1.3.3；
4) space in structure is filled up with aluminium ingot and epoxy resin AB glue is used to pour, by angle fillet 1.5.1 on first,
Angle fillet 1.5.2 on second, angle fillet 1.5.3 in third, angle fillet 1.5.4 bolt and first on the 4th
Outer panel 1.2.1, the second outer panel 1.2.2, third outer panel 1.2.3, the 4th outer panel 1.2.4 and the first tilt prop 1.3.1
The 4th tilt prop 1.3.4 connection of second tilt prop 1.3.2 third tilt prop 1.3.3；
5) loading disk 3 and groups of sensor 2 are connected with, the assembly of entire ergograph is so far completed.Using
Modularized design, assembly is simple and process is reversible.
If the hole location of ground mounting surface changes, pinboard can be installed additional to adapt to different grounds in 1.1 lower part of bottom plate
Mounting surface.
The bolt for needing the place of being bolted coupling part must be tightened as far as possible in the range of intensity allows, with
The rigidity for improving the measuring system guarantees its measurement accuracy.
Due to piezoelectric patches self-characteristic can at any time and the variation of environment and change, so that measurement result be made to drift about,
So needing periodically to demarcate ergograph.Calibration disk 4 is connected on loading disk 3 with screw in calibration, use can be used
Hammering method or other scaling methods are demarcated.
Non-elaborated part of the present invention belongs to techniques well known.
The above, part specific embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, appoints
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all cover by what those skilled in the art
Within protection scope of the present invention.
Claims (10)
1. a kind of high precision high rigidity heavy load piezoelectric type decouples microvibration measuring system, it is characterised in that: the system includes knot
Structure module (1), groups of sensor (2), loading disk (3) demarcate disk (4) and Data collection and precessing system (5)；Structure mould
Block (1) by bottom plate (1.1), the first outer panel (1.2.1), the second outer panel (1.2.2), third outer panel (1.2.3), the 4th outside
Side plate (1.2.4), the first tilt prop (1.3.1), the second tilt prop (1.3.2), third tilt prop (1.3.3), the 4th tilt prop
(1.3.4), interior octagon plate (1.4), angle fillet (1.5.1) on first, angle fillet (1.5.2), third on second
Upper angle fillet (1.5.3), angle fillet (1.5.4), the first A type link block (1.6.1), the connection of the 2nd A type on the 4th
Block (1.6.2), the 3rd A type link block (1.6.3), the 4th A type link block (1.6.4), the first Type B link block (1.7.1), second
Type B link block (1.7.2), third Type B link block (1.7.3), the 4th Type B link block (1.7.4) composition；Groups of sensor
(2) it is divided into the tangential sensor (2.2) of four longitudinal direction-radial transducers (2.1) and four longitudinal directions-, wherein four longitudinal directions-radial direction passes
Sensor (2.1) is located on four 90 degree of directions side of interior octagon plate (1.4) outer surface, with loading disk (3), bottom plate
(1.1), interior octagon plate (1.4) is tightened by bolt, with the first outer panel (1.2.1), the second outer panel (1.2.2), third
Outer panel (1.2.3), the 4th outer panel (1.2.4) pass through the first A type link block (1.6.1), the 2nd A type link block respectively
(1.6.2), the 3rd A type link block (1.6.3), the 4th A type link block (1.6.4) are connected with；Four longitudinal directions-tangentially sense
Device (2.2) is located on four 45 degree of directions side of interior octagon plate (1.4) outer surface, with loading disk (3), bottom plate
(1.1), interior octagon plate (1.4) is tightened by bolt, oblique with the first tilt prop (1.3.1) the second tilt prop (1.3.2) third
The 4th tilt prop (1.3.4) of fagging (1.3.3) passes through the first Type B link block (1.7.1), the second Type B link block respectively
(1.7.2), third Type B link block (1.7.3), the 4th Type B link block (1.7.4) are connected with；Longitudinal direction-radial transducer
(2.1) it is made of seven parts, i.e. first sensor bottom (2.1.1), first sensor side plate (2.1.2), second sensor side plate
(2.1.3), first sensor core (2.1.4), the first bottom tension and compression piece (2.1.5), side tension and compression piece (2.1.6) and round biography
Power gasket (2.1.7) composition；Longitudinal-tangential sensor (2.2) is also made of seven parts, i.e. second sensor bottom (2.2.1), the
Three sensor side plates (2.2.2), the 4th sensor side plate (2.2.3), second sensor core (2.2.4), the second bottom tension and compression piece
Piece (2.2.6) and rectangular power transmission gasket (2.2.7) composition are sheared in (2.2.5), side；Longitudinal-tangential sensor (2.2) and vertical
To-radial transducer (2.1) the difference is that by longitudinal direction-radial transducer (2.1) side tension and compression piece (2.1.6) with
Round power transmission gasket (2.1.7) be changed to side shearing piece (2.2.6) in longitudinal-tangential sensor (2.2) at same position with
Rectangular power transmission gasket (2.2.7), remaining structure are identical；Sensor module (2) is designed according to structure force-transfer characteristic, is indulged
As follows to-radial transducer (2.1) mentality of designing: bottom tension and compression piece (2.1.5) is located at sensor bottom (2.1.1) and sensor core
Between (2.1.4), sensor bottom (2.1.1) and sensor core (2.1.4) are tightened to make bottom tension and compression piece by six bolts
(2.1.5) is compacted；Side tension and compression piece (2.1.6) be located at first sensor side plate (2.1.2) and sensor core (2.1.4) it
Between, first sensor side plate (2.1.2) and sensor core (2.1.4) are tightened to make side tension and compression piece by four bolts
(2.1.6) is compacted；Round power transmission gasket (2.1.7) be located at second sensor side plate (2.1.3) and sensor core (2.1.4) it
Between, second sensor side plate (2.1.3) and sensor core (2.1.4) are tightened to make round power transmission gasket by four bolts
(2.1.7) is compacted；Longitudinal-tangential sensor (2.2) mentality of designing is as follows, and bottom tension and compression piece (2.2.5) is located at sensor bottom
Between (2.2.1) and sensor core (2.2.4), sensor bottom (2.2.1) and sensor core (2.2.4) are tightened by six bolts
To make bottom tension and compression piece (2.2.5) be compacted；Side shearing piece (2.2.6) is located at 3rd sensor side plate (2.2.2) and passes
Between sensor core (2.2.4), 3rd sensor side plate (2.2.2) and sensor core (2.2.4) by four bolts tighten to
It is compacted side shearing piece (2.2.6)；Rectangular power transmission gasket (2.2.7) is located at the 4th sensor side plate (2.2.3) and sensing
Between device core (2.2.4), the 4th sensor side plate (2.2.3) and sensor core (2.2.4) are tightened to make by four bolts
Rectangular power transmission gasket (2.2.7) is compacted；Round power transmission gasket (2.1.7) is geometric dimension and side tension and compression piece (2.1.6) phase
Aluminium flake similar in same and rigidity and piezoelectric patches, rectangular power transmission gasket (2.2.7) are that piece (2.2.6) phase is sheared in geometric dimension and side
Aluminium flake similar in same and rigidity and piezoelectric patches, the two effect are the uniformity and consistency for guaranteeing power transmission；During the test,
First sensor bottom (2.1.1) and second sensor bottom (2.2.1) and first sensor side plate (2.1.2), second sensor side
(2.1.3), 3rd sensor side plate (2.2.2), the 4th sensor side plate (2.2.3) with construction module because being connected therefore keeping not
Dynamic, the load that first sensor core (2.1.4), the source of being disturbed second sensor core (2.2.4) are transmitted can generate micro-displacement
Thus with piezoelectric patches mutual extrusion or mutually shearing, so that the first bottom tension and compression piece (2.1.5) and the second bottom tension and compression piece
(2.2.5) can measure vertical axial force signal, and side tension and compression piece (2.1.6) can measure horizontal radial force signal, and side is cut
Slice (2.2.6) can measure horizontal tangential force signal；Four longitudinal direction-radial transducers (2.1) pass through designed wiring side
Formula, may be implemented bottom tension and compression piece (2.1.5) in four longitudinal direction-radial transducers (2.1) to around X-axis and Y-axis oscillatory torque,
Side tension and compression piece (2.1.6) is to the measurement along X-axis and the vibration force of Y-axis；The tangential sensor (2.2) in four longitudinal directions-passes through set
Bottom tension and compression piece (2.2.5) may be implemented in the tangential sensor (2.2) in four longitudinal directions-to the vibration along Z axis in the mode of connection of meter
The measurement of piece (2.2.6) to oscillatory torque about the z axis is sheared in power, side；Groups of sensor (2) passes through signal transmssion line and number
It is connected according to acquisition with processing system (5)；When small sample perturbations source generates vibration, groups of sensor (2) generates six piezoelectricity letters
Number, the sensitivity coefficient of six decouplings is obtained after demarcating to shake table, can surveyed after assigning six acquisition channels
Real-time six component spaces force signal is obtained in amount, to analyze the vibration characteristics of disturbing source by data analysis system.
2. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: in order to carry out vibration measurement to larger-size vibration source of disturbing, the test platform architecture geometric dimension is also larger: long
1200mm, wide 1200mm, high 246.5mm, in order to guarantee that structure intrinsic frequency with higher must reduce to the greatest extent in structure
Cavity, based on this consideration, in the first outer panel (1.2.1), the second outer panel (1.2.2), third outer panel (1.2.3), the 4th
Outer panel (1.2.4), the first tilt prop (1.3.1) the second tilt prop (1.3.2) third tilt prop (1.3.3) the 4th tilt prop
There is no the place of sensor that need to install aluminium ingot additional between (1.3.4) and interior octagon plate (1.4) to tamp space, and is used at gap
Epoxide-resin glue pours；Cavity at four angles of ergograph need to be handled with same method.
3. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: in order to meet the requirements the rigidity of structure, longitudinal direction-radial transducer (2.1) and longitudinal-tangential sensor (2.2) use table
Face hardened steel, rest part material are duralumin.
4. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: in sensor assembling process, piezoelectric patches group is pressed on first sensor bottom (2.1.1), second sensor bottom with bolt
Between (2.2.1) and first sensor core (2.1.4) second sensor core (2.2.4) and first sensor side plate (2.1.2),
When between two sensor side plates (2.2.2) and first sensor core (2.1.4), second sensor core (2.2.4), it is ensured that piezoelectricity
The stress of piece is uniformly, therefore, need to guarantee that the pretightning force of each screw on the same mounting surface is identical with torque spanner
's.
5. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: vibration test table installation process is as follows:
1) bolt is inserted by mounting structure module (1) from bottom plate (1.1) lower surface, thus by the first outer panel (1.2.1), second
Outer panel (1.2.2), third outer panel (1.2.3), the 4th outer panel (1.2.4), the first tilt prop (1.3.1), the second diagonal brace
Plate (1.3.2), third tilt prop (1.3.3), the 4th tilt prop (1.3.4) and interior octagon plate (1.4) are fixed on bottom plate
(1.1) on, then by bolt from the insertion of bottom plate (1.1) upper surface, so that bottom plate (1.1) is fixed on ground；
2) groups of sensor (2) are installed, in the upper surface of first sensor bottom (2.1.1) and second sensor bottom (2.2.1)
Installation piezoelectric patches positioning device simultaneously places the first bottom tension and compression piece (2.1.5) and the second bottom tension and compression piece (2.2.5) respectively, then
First sensor core (2.1.4) and are placed on first bottom tension and compression piece (2.1.5) and the second bottom tension and compression piece (2.2.5) respectively
Two sensor cores (2.2.4) are simultaneously tightened by six bolts；Transposition makes first sensor core (2.1.4) and second sensor core
The side surface of (2.2.4) is upward, installs piezoelectric patches positioning device in the face and places side tension and compression piece (2.1.6) and side respectively
It shears piece (2.2.6), then places first sensor side plate on side tension and compression piece (2.1.6) and side shearing piece (2.2.6)
(2.1.2), 3rd sensor side plate (2.2.2) are simultaneously tightened by four bolts；Again transposition make first sensor core (2.1.4) and
The surface of the opposite side of second sensor core (2.2.4) is upward, installs piezoelectric patches positioning device in the face and places circle respectively
Shape power transmission gasket (2.1.7) and rectangular power transmission gasket (2.2.7), then in round power transmission gasket (2.1.7) and rectangular power transmission gasket
Second sensor side plate (2.1.3) and the 4th sensor side plate (2.2.3) are placed on (2.2.7) and are tightened by four bolts；
So far groups of sensor (2) is installed；
3) groups of sensor (2) is fixed by bolts on bottom plate (1.1) and interior octagon plate (1.4), blending bolt passes through
First A type link block (1.6.1), the 2nd A type link block (1.6.2), the 3rd A type link block (1.6.3), the 4th A type link block
(1.6.4) respectively with the first outer panel (1.2.1), the second outer panel (1.2.2), third outer panel (1.2.3), the 4th outer panel
(1.2.4) is connected, and passes through the first Type B link block (1.7.1), the second Type B link block (1.7.2), third Type B link block
(1.7.3), the 4th Type B link block (1.7.4) and the first tilt prop (1.3.1) second tilt prop (1.3.2) third tilt prop
(1.3.3) the 4th tilt prop (1.3.4) connects；
4) space in structure is filled up with aluminium ingot and epoxy resin AB glue is used to pour, by angle fillet on first (1.5.1), the
Angle fillet (1.5.2) on two, angle fillet (1.5.3) in third, on the 4th angle fillet (1.5.4) with bolt with
First outer panel (1.2.1), the second outer panel (1.2.2), third outer panel (1.2.3), the 4th outer panel (1.2.4) and first
The connection of tilt prop (1.3.1) the second tilt prop (1.3.2) third tilt prop (1.3.3) the 4th tilt prop (1.3.4)；
5) loading disk (3) and groups of sensor (2) are connected with, the assembly of entire ergograph is so far completed, used
Modularized design, assembly is simple and process is reversible.
6. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: if the hole location of ground mounting surface changes, pinboard can be installed additional in bottom plate (1.1) lower part to adapt to different ground installations
Face.
7. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: the bolt for needing the place of being bolted coupling part must be tightened as far as possible in the range of intensity allows, to improve
The rigidity of the measuring system guarantees its measurement accuracy.
8. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: due to piezoelectric patches self-characteristic can at any time and the variation of environment and change, so that measurement result be made to drift about, so needing
Periodically ergograph demarcated, be connected to calibration disk (4) on loading disk (3) with screw in calibration, can hammered into shape with using
Striking or other scaling methods are demarcated.
9. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: under so big geometric dimension: long 1200mm, wide 1200mm, high 246.5mm, rigidity can be super up to first natural frequency
900Hz is crossed, measurement accuracy can reach 0.01N and 0.001Nm.
10. high precision high rigidity heavy load piezoelectric type according to claim 1 decouples microvibration measuring system, feature exists
In: it is designed by the various combination of space layout and signal wire to sensor, six voltages decoupled can be directly obtained
Signal, six component force signal F of space can directly be measured by sensitivity coefficient obtained by calibrating in the channel in real time by being arrangedx、Fy、
Fz、Mx、My、Mz。
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100199691B1 (en) * | 1997-05-19 | 1999-06-15 | 김동진 | 6-component load cell |
| US7759839B2 (en) * | 2006-04-04 | 2010-07-20 | Kolo Technologies, Inc. | Acoustic decoupling in cMUTs |
| CN101881651A (en) * | 2010-06-18 | 2010-11-10 | 北京航空航天大学 | Small-size portable high-accuracy disturbance measuring system |
| CN202195878U (en) * | 2011-07-23 | 2012-04-18 | 浙江大学 | Tricomponent standard vibration table based on locking type decoupling device |
| CN103471705A (en) * | 2013-09-26 | 2013-12-25 | 北京空间飞行器总体设计部 | Ultra-low frequency six-component micro-vibration measurement system |
| CN104457966A (en) * | 2014-12-05 | 2015-03-25 | 北京航空航天大学 | Piezoelectric type decoupling micro-vibration measurement system |
| CN105973455A (en) * | 2016-06-27 | 2016-09-28 | 北京空间飞行器总体设计部 | Combined piezoelectric strain vibration measurement device |
-
2016
- 2016-12-05 CN CN201611103092.1A patent/CN106768288B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100199691B1 (en) * | 1997-05-19 | 1999-06-15 | 김동진 | 6-component load cell |
| US7759839B2 (en) * | 2006-04-04 | 2010-07-20 | Kolo Technologies, Inc. | Acoustic decoupling in cMUTs |
| CN101881651A (en) * | 2010-06-18 | 2010-11-10 | 北京航空航天大学 | Small-size portable high-accuracy disturbance measuring system |
| CN202195878U (en) * | 2011-07-23 | 2012-04-18 | 浙江大学 | Tricomponent standard vibration table based on locking type decoupling device |
| CN103471705A (en) * | 2013-09-26 | 2013-12-25 | 北京空间飞行器总体设计部 | Ultra-low frequency six-component micro-vibration measurement system |
| CN104457966A (en) * | 2014-12-05 | 2015-03-25 | 北京航空航天大学 | Piezoelectric type decoupling micro-vibration measurement system |
| CN105973455A (en) * | 2016-06-27 | 2016-09-28 | 北京空间飞行器总体设计部 | Combined piezoelectric strain vibration measurement device |
Non-Patent Citations (1)
| Title |
|---|
| 一种应变式超低频微振动测试台;陈江攀 等;《振动与冲击》;20141228;第33卷(第24期);第77-81页 |
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