CN107655623A - Contactless Jing Dongtaibiaodingshiyantai - Google Patents
Contactless Jing Dongtaibiaodingshiyantai Download PDFInfo
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- CN107655623A CN107655623A CN201710696330.2A CN201710696330A CN107655623A CN 107655623 A CN107655623 A CN 107655623A CN 201710696330 A CN201710696330 A CN 201710696330A CN 107655623 A CN107655623 A CN 107655623A
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- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 239000000696 magnetic material Substances 0.000 claims description 9
- 230000035699 permeability Effects 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 24
- 238000013461 design Methods 0.000 abstract description 16
- 230000004044 response Effects 0.000 abstract description 13
- 230000005284 excitation Effects 0.000 abstract description 5
- 230000008092 positive effect Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 20
- 238000009434 installation Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- -1 coil Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnets (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of contactless Jing Dongtaibiaodingshiyantai, including X-axis component, Y-axis component and Z axis component, the X-axis component, Y-axis component and Z axis component include bottom plate, optical axis slide rail, sliding block, ball-screw and supporting plate respectively, the bottom plate is fixed with the optical axis slide rail, the sliding block is fixed with the supporting plate, the Y-axis component and Z axis component are individually fixed in the supporting plate of the X-axis component, and the X-axis component, Y-axis component and Z axis component are respectively equipped with electromagnet fixed plate.The present invention carries out dynamic calibration to piezoelectric type dynamometer using step response method, and step response has positive step excitation with bearing two kinds of step excitation, and the generation step signal device that the present invention designs is easy, positive effect.
Description
Technical field
The present invention relates to the static demarcating of a kind of piezoelectric type dynamometer or piezoelectric transducer and dynamic calibration experiment platform.
Background technology
The dynamometry principle of piezoelectric type dynamometer or piezoelectric type force cell is all after being pressurized by the piezoelectric of inside
Piezo-electric effect is produced, i.e., is produced charge collection phenomenon by piezoelectric material surface in the case of the pressure or pulling force of certain orientation,
Drawn by wire and voltage signal in low impedance is converted into show the amplitude of input power and direction by charge amplifier.Piezoelectricity
The advantages of formula dynamometer, is that measurement accuracy is high, system stiffness is good, frequency effect characteristic is good, dynamometry bandwidth etc., therefore dynamometry
Instrument is more and more applied in the occasion such as milling lathe cutting force measurement and real-time accuracy compensation.Therefore, every dynamometer is all necessary
By static and dynamic calibration to ensure the precision of its measurement.
Static demarcating refers to that sensor loads standard static load, and sensor output electricity is gathered after sensor stabilization output
Pressure, and then solve the process of the Static State Index of piezoelectric type dynamometer or sensor.Dynamometer or Sensor's Static characteristic are described
Model is referred to as static mathematical model, and static mathematical model has two classes of nonlinear and linear.In piezoelectric type dynamometer or sensor
In due to cross interferance it is smaller, therefore piezoelectric force instrument is regarded as static linear model.Static demarcating can in linear system
The performance of numerous Static State Index instrument sign dynamometers or sensor is obtained, such as the linearity, sensitivity, repeatability, resolution ratio, late
The indexs such as stagnant, stability.Therefore static demarcating is had to pass through for qualified a piezoelectric type dynamometer or piezoelectric transducer
It can come into operation, otherwise can produce error and the distortion of data.
In the case that dynamic calibration refers to by inputting pattern field, the output of collection piezoelectric type dynamometer studies it to mark
The process of the response of quasi- excitation, dynamic calibration can obtain the dynamic property of dynamometer, as intrinsic frequency, response frequency, damping ratio,
The dynamic indicators such as bandwidth frequency, these indexs show the ability in sampling of dynamometer.The principle of dynamic calibration is done both at home and abroad
Many researchs, the method that system output is studied when such as inputting sinusoidal variations pressure are referred to as frequency response method, but due to piezoelectric type
The intrinsic frequency of dynamometer is general all higher, it is therefore desirable to which the sinusoidal pressure of higher frequency can just inspire piezoelectric type dynamometry
The mode of instrument, the device for then producing standard sine pressure at present limit to very much, the frequency range of change also very little, highest frequency
Rate only up to 300HZ or so, therefore can not be as the dynamic calibrating method of piezoelectric type dynamometer.Also one kind can be to piezoelectric type dynamometry
The method that instrument does dynamic calibration is impulse response method, i.e., produces a pulse shock to dynamometer to inspire its mode, realize
Method such as fall hammering dynamometer from certain altitude using the steel ball of quenching or power with acceleration transducer is hammered into shape to dynamometry
Instrument is hammered.This method is easy, but impulsive force is unstable caused by percussion mechanism, and the precision demarcated is not high.
The content of the invention
The present invention is by having invented electromagnetic theory research one kind standard static power and standard dynamic as caused by electromagnet
The contactless Jing Dongtaibiaodingshiyantai of power, provided for piezoelectric type dynamometer or the quiet dynamic calibration of sensor a kind of simple and efficient
Method.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：
Contactless Jing Dongtaibiaodingshiyantai, including X-axis component, Y-axis component and Z axis component, the X-axis component, Y-axis
Component and Z axis component include bottom plate, optical axis slide rail, sliding block, ball-screw and supporting plate respectively, and the bottom plate is slided with the optical axis
Rail is fixed, and the sliding block is fixed with the supporting plate, and the Y-axis component and Z axis component are individually fixed in the branch of the X-axis component
On fagging, the X-axis component, Y-axis component and Z axis component are respectively equipped with electromagnet fixed plate.
The electromagnet includes magnetic core, winding, shell and sleeve, and the sleeve is sheathed on the magnetic core, the winding
It is around on the sleeve.
The permeability magnetic material of the electromagnet uses iron-nickel alloy 1J50 materials.
The permeability magnetic material length is less than the electromagnet overall length.
The winding uses copper wire material.
The aperture that length is a diameter of 13mm of 18mm is provided with inside the magnetic core.
The current control module includes voltage regulator module, relay module, sinusoidal signal square-wave signal and module occurs
With voltage amplification module, the sine square waveform signal generating module realizes being exported by sinusoidal or square wave rule for voltage signal, width
It is all adjustable to be worth frequency, the voltage amplification module is that module progress voltage magnitude occurs to the sinusoidal signal square-wave signal to put
Greatly.
The sinusoidal signal square-wave signal occurs module and uses low frequency generator module in ICL8038.
It is 5V voltage signals that module output, which occurs, for the sinusoidal signal square-wave signal.
The voltage amplification module uses LM385 signal amplification modules.
The present invention carries out dynamic calibration using step response method to piezoelectric type dynamometer, and step response has positive step
Excitation and negative two kinds of step excitation, the generation step signal device that the present invention designs is easy, positive effect.
Brief description of the drawings
Fig. 1 is the three axle slide unit structural representations of the present invention.
Fig. 2 is the side view of the three axle slide units of the present invention.
Fig. 3 is the electromagnet structure schematic diagram of the present invention.
Fig. 4 is electromagnet calibration result figure.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
Contactless quiet dynamic calibration experiment platform target is this experimental bench of the present invention to realize the quiet dynamic force of offer standard
Development is divided into three parts：Produce standard force source device-electromagnet, three axle slide units, current control module.
As depicted in figs. 1 and 2, three axle slide units include handwheel 1, optical axis slide rail 2, sliding block 3, ball-screw 4, bottom plate 5, Y-axis
Supporting plate 6, fixed block 7, feed screw nut 8, X-axis electromagnet fixed plate 9, electromagnet 10, equally in Y-axis and also including on Z axis
These structures, such as Z axis electromagnet fixed plate 11, Y-axis electromagnet fixed plate 12, Y-axis bottom plate 13, X-axis supporting plate 14, Z axis bottom plate
15th, section bar 16, Z axis supporting plate 17.The movement on tri- directions of XYZ mainly can be achieved in three axle slide units.Power is provided by handwheel, is rolled
Convert rotational motion is driven supporting plate to move by ballscrew for linear motion, and the helical pitch of ball-screw is 4mm.Electromagnet is pacified
Holding position is the slide unit end relative with handwheel.Different embodiment Y-axis of this slide unit different from other XYZ slide units in structure herein
Slide unit is arranged in the supporting plate of X-axis, and the installation site of same Z axis slide unit is similarly installed on X-axis, and installation method is will be sliding
Block fixing screws are tightened on optical axis slide rail, install Z axis supporting plate and provide section bar installation to Z axis installation on the supporting plate
Position, this three axles slide unit can provide mounting platform for piezoelectric type dynamometer or sensor, i.e., in the supporting plate of Y-axis.
It is designed based on Maxwell's electromagnetic theory with electromagnetic force calculation formula to producing electromagnet, shifts out electromagnet onto
It is as follows to produce electromagnetic force formula：
B is magnetic induction intensity, S magnetic circuits area, u in formula0It is the size of current for being passed through coil for air permeability, I, W is
Coil turn, l are the length of magnetic path, and a is correction factor, and u is internal permeability magnetic material magnetic conductivity；
The size and coil turn W, the magnetic of permeability magnetic material for showing that electromagnet produces electromagnetic force are derived according to electromagnetic force formula
Conductance u and magnetic circuit area S are relevant；The big minor adjustment of electromagnetic force can pass through length of magnetic path l and input coil electric current I parameters.
To produce electromagnet, electromagnetic force amplitude is as far as possible big, and electromagnet inner-core must select the big material of magnetic conductivity,
Higher according to the magnetic conductivity for researching and analysing iron-nickel alloy 1J50 materials to soft magnetic materials, formula shows the about big generation of magnetic circuit area
Electromagnetic force is bigger, but huge in structure will cause to the raising of the rigidity requirement of three-axis moving platform, therefore selects 30mm diameters
Iron-nickel alloy is as permeability magnetic material.
Making selection copper wire to coil, copper wire material used electric conductivity is excellent, and resistance value I produces larger electric current.
Winding method carries out winding according to right-hand rule.
By experimental verification, the electromagnet of design produces electromagnetic force amplitude in the case of zero distance up to 700N, produces mark
The frequency of Quasi dynamic power is in below 50HZ.The Electromagnetic Design is fully met to the numerous piezoelectric type dynamometers of in the market or sensor
Demarcation.
As shown in figure 3, main magnetic core 1, winding 2, shell 3, the sleeve 4 for including electromagnet of the design of electromagnet.Electromagnet
Permeability magnetic material be processed from iron-nickel alloy 1J50 materials, Design of length is upper end 55mm, diameter 30mm, designs step,
Lower end diameter is 13mm, length 15mm, is processed using numerically controlled lathe.Electromagnet coil carries out winding using copper wire, around
Prescription formula is wound according to the right-hand rule, and coil turn is designed as 2000 circles.Electromagnet outer end is added from acrylic board
Work, acrylic thickness selection 2mm, electromagnet end cap selection end cover rubber, electrically non-conductive material.It is larger to produce electromagnetic force, must
A small absorbate must be processed, a diameter of 13mm length is 10mm.
After the completion of Electromagnetic Design, because electromagnetic force caused by electromagnet is larger by external interference, and electromagnet produces magnetic
Complicated and easy leakage field.Therefore it is essential that demarcation is carried out to electromagnetic force caused by electromagnet.Demarcation to electromagnet
The instrument of more standard must be used to be demarcated, such as be demarcated using Ai De treasured HP-500 push-pull effort machines.Due to influenceing electricity
The factor of magnetic force has two factors of current signal and the distance between electromagnet and absorbate, to ensure single-factor influence, therefore
We determined that electric current is demarcated after the lower suitable length of magnetic path.The electric supply installation of calibration and usage selects magnificent friendship adjustable DC
Voltage-stabilized power supply 30v/5A is powered to electromagnet.Electromagnet is arranged on X-axis slide unit in calibration process, small-sized absorbate peace
Mounted in Ai De treasured HP-500 head, mobile Ai Debao pull and push dynamometer position, it is fixed on and the suitable relative position of electromagnet.It is logical
The input voltage for overregulating D.C. regulated power supply is demarcated to electromagnet.Calibration result such as Fig. 4.
Current control module is analyzed according to demand devises voltage regulator module, relay output module, sinusoidal signal side
Ripple signal generating module, voltage amplification module.Voltage amplification module is that module occurs to sinusoidal signal square-wave signal to carry out voltage
Amplitude amplification, occur that signal purchases with square-wave signal is low frequency generator module in ICL8038 due to sinusoidal, output
For 5V voltage signals, it is therefore desirable to voltage magnitude is adjusted using voltage amplification module, this patent is put from LM385 signals
Big module, the module carry gain-adjusted, can adjust multiplication factor.Current control module, which manufactures and designs, has to pass through demarcation checking
It can just come into operation, avoid the influence of error component as far as possible.Demarcation for voltage regulator module is relatively simple, uses general-purpose
Table is demarcated.Demarcation for the signal such as sinusoidal signal and square-wave signal, it is necessary to carry out checking demarcation using oscillograph.
Demarcated herein from utd2102cex two-channel digitals oscillograph to sinusoidal with square-wave signal output.
After completing the demarcation to electromagnet and current control module, patent of the present invention can be to piezoelectric type dynamometer or piezoelectricity
Formula sensor carries out quiet dynamic calibration.Piezoelectric type dynamometer installation site is in Y-axis supporting plate, there is some bolts on the supporting plate
Hole, the installation of piezoelectric type dynamometer can be facilitated.Electromagnet is fitted with the XYZ axles of three axle slide units, in piezoelectric type dynamometer
On three directions stick circular absorbate iron block.Adjusted by handwheel rotation on each direction between electromagnet and absorbate
Distance, pay attention to because piezoelectric transducer or piezoelectric type dynamometer may produce Horizonal Disturbing on piezoelectric chip or structure,
I.e. simple X-direction, which acts on, equally electric charge output on YZ directions, therefore invention can only be enterprising to single direction one by one
Rower is determined to ensure the accuracy of calibration result.After installation fixes relative position, dynamometer or sensor are carried out static
Demarcation, operating method are by the amplitude of voltage control module adjustment input voltage, are generally entered from low to high and from high to low
Row is adjusted, and caused output signal is adopted by charge method device by NI equipment or other collecting devices after dynamometer stress
Collection is shown in host computer procedure, and this is the output of piezoelectric type dynamometer.The big I of electromagnetic force is according to former electromagnet calibration result
Table control is checked that this is the input of standard force source.Therefore standard force source input can be established and export it with piezoelectric type dynamometer
Between variation relation, you can draw the static characteristics such as sensitivity, the linearity of piezoelectric type dynamometer, by analyze contrast from it is low to
Result high, that two kinds of input proof forces obtain from high to low can analyze the static characteristics such as the repeatability of dynamometer, stability.In addition
By patent of the present invention, the Horizonal Disturbing problem of dynamometer can be studied.Such as standard force source, dynamometry are inputted in single direction X-axis
The voltage output of YZ axles can be shown in the collection host computer of instrument, multi-group data can be obtained by adjusting different amplitudes；Equally in YZ axle weights
Multiple operation, establishes Horizonal Disturbing table, can try to achieve Horizonal Disturbing coefficient by data analysis, improve piezoelectric type dynamometer or biography
The measurement accuracy of sensor.
The dynamic calibration of piezoelectric type dynamometer or sensor has a variety of methods as described in background, and step response method is this patent
A kind of scaling method used, it is that the output of step signal can be achieved by the relay module in current control module, in electricity
There is a start button in flow module, the voltage signal that certain amplitude can be had by pressing the button exports, you can realizes carrying for moment
For the input of a step standard force signal.The step force has fast response time relative to the generation of other step forces, does not increase
The characteristics of adding additional weight.Again by the piezoelectric type dynamometer Output Signal Analysis collected to host computer, you can obtain pressure
The dynamic property of electric-type dynamometer, such as intrinsic frequency, response frequency, damping ratio, bandwidth frequency dynamic indicator.Meanwhile this hair
Bright patent have also been devised sinusoidal signal square-wave signal and module occur, and the setting by the module is the sine of exportable certain frequency
Force signal or square wave force signal, due to electromagnet, integrally in inductive element, therefore its power output signal can not reach electric signal frequency
Rate, patented criteria output of the present invention also may be used up to below 50HZ for the relatively low piezoelectric type dynamometer of intrinsic frequency or sensor
Demarcated by sinusoidal force signal.Intrinsic frequency can be by sinusoidal force signal or square wave force signal to quiet dynamic mark compared with high product
Determine result to be verified.
The numerous piezoelectric type dynamometer of in the market or sensor are three axis force dynamometer or sensor, therefore to realize demarcation
Function, three axle slide units are designed to ensure three axis force dynamometer or the sensor quiet dynamic force of independent application standard on XYZ directions, and
Realize the adjustment of the length of magnetic path.
Mainly depending on the achievable target of this patent, this patent target is to realize piezoelectricity for the design of current control module
The quiet dynamic calibration of formula dynamometer or sensor.For static demarcating, it is necessary to a variety of different standard static power inputs are provided, this
Experimental bench realizes that the input in adjustment standard static has adjustment input current and changes two methods of the length of magnetic path, considers control
Precision is to realize that static demarcating must can control changing for input current value with easy to operate more reasonable using current control
Become, because electromagnet coil winding material and length determine, therefore resistance value determines, the control of electric current is believed that voltage
Control.For dynamic calibration, this patent is demarcated using step response method, in current control module increase relay with
Moment powering-on function is provided.Using electromagnetic force caused by electromagnet as input dynamic force the reason for be its fast response time,
It is contactless not give former dynamometer increase impost, easy to operate.Operability is higher in other current control module, can increase
The input of key player on a team's signal and square-wave signal, have verified that the dynamic property of piezoelectric type dynamometer.
The invention belongs to the quiet dynamic calibration technical field of piezoelectric type dynamometer or sensor, devises a kind of contactless
Jing Dongtaibiaodingshiyantai, designed including Electromagnetic Design method, the design of three axle slide units, current control module.The present invention
Electromagnetic force is produced as standard force source, current control using electromagnet according to the existing quiet dynamic calibrating method of piezoelectric type dynamometer
Module control electric current signal is contactless quiet to realize to adjust to the input standard force signal of piezoelectric type dynamometer or sensor
Dynamic calibration, obtain the quiet dynamic parameter of piezoelectric force instrument.Electromagnetic Design manufacture is derived according to Maxwell's electromagnetic theory
Electromagnetic force calculation formula is designed to electromagnet permeability magnetic material, coil, shell.Lead screw transmission is selected in the design of three axle slide units, and
YZ axles are installed on X-axis simultaneously using different from common three axles slide unit structure design now, the pressure that target is conveniently calibrated
The installation of electric-type sensor or dynamometer.The design of current control module devises voltage control mould according to the requirement of quiet dynamic calibration
Block, relay module, sinusoidal signal square wave signal generator, electric charge amplification module etc..Convenient offer normalized current is provided
Signal.Light structure of the present invention, easy to operate, the quiet dynamic calibration for realizing piezoelectric type dynamometer or sensor well will
Ask.
Claims (10)
1. contactless Jing Dongtaibiaodingshiyantai, it is characterised in that：Including X-axis component, Y-axis component and Z axis component, the X
Shaft assembly, Y-axis component and Z axis component include bottom plate, optical axis slide rail, sliding block, ball-screw and supporting plate respectively, the bottom plate with
The optical axis slide rail is fixed, and the sliding block is fixed with the supporting plate, and the Y-axis component and Z axis component are individually fixed in the X
In the supporting plate of shaft assembly, the X-axis component, Y-axis component and Z axis component are respectively equipped with electromagnet fixed plate.
2. contactless Jing Dongtaibiaodingshiyantai according to claim 1, it is characterised in that：The electromagnet includes magnetic
Core, winding, shell and sleeve, the sleeve are sheathed on the magnetic core, and the winding is around on the sleeve.
3. contactless Jing Dongtaibiaodingshiyantai according to claim 2, it is characterised in that：The magnetic conduction of the electromagnet
Material uses iron-nickel alloy 1J50 materials.
4. contactless Jing Dongtaibiaodingshiyantai according to claim 3, it is characterised in that：The permeability magnetic material length
Less than the electromagnet overall length.
5. contactless Jing Dongtaibiaodingshiyantai according to claim 2, it is characterised in that：The winding uses copper wire
Material.
6. contactless Jing Dongtaibiaodingshiyantai according to claim 2, it is characterised in that：It is provided with inside the magnetic core
Length is a diameter of 13mm of 18mm aperture.
7. contactless Jing Dongtaibiaodingshiyantai according to claim 1, it is characterised in that：The current control module
Module and voltage amplification module, the sine side occurs including voltage regulator module, relay module, sinusoidal signal square-wave signal
Ripple signal generating module realizes being exported by sinusoidal or square wave rule for voltage signal, and amplitude frequency is all adjustable, the voltage amplification
Module is that module occurs to the sinusoidal signal square-wave signal to carry out voltage magnitude amplification.
8. contactless Jing Dongtaibiaodingshiyantai according to claim 7, it is characterised in that：The sinusoidal signal square wave
Signal generating module uses low frequency generator module in ICL8038.
9. contactless Jing Dongtaibiaodingshiyantai according to claim 8, it is characterised in that：The sinusoidal signal square wave
Signal generating module output is 5V voltage signals.
10. contactless Jing Dongtaibiaodingshiyantai according to claim 7, it is characterised in that：The voltage amplification mould
Block uses LM385 signal amplification modules.
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| CN201710696330.2A CN107655623B (en) | 2017-08-15 | 2017-08-15 | Non-contact static and dynamic calibration experiment table |
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| CN201710696330.2A CN107655623B (en) | 2017-08-15 | 2017-08-15 | Non-contact static and dynamic calibration experiment table |
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| CN107655623B CN107655623B (en) | 2020-02-21 |
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| CN108896398A (en) * | 2018-08-31 | 2018-11-27 | 中国航天空气动力技术研究院 | A kind of dynamic calibration equipment generating negative step load |
| CN109000848A (en) * | 2018-10-17 | 2018-12-14 | 济南大学 | A kind of pressure sensor dynamic calibration experimental rig for steel ball cold heading |
| CN110646135A (en) * | 2019-11-13 | 2020-01-03 | 吉林大学 | Horizontal push-pull dynamometer detector |
| CN111174969A (en) * | 2020-03-06 | 2020-05-19 | 合肥工业大学 | Dynamic calibration equipment for multi-dimensional force sensor generating negative step |
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| CN108896398A (en) * | 2018-08-31 | 2018-11-27 | 中国航天空气动力技术研究院 | A kind of dynamic calibration equipment generating negative step load |
| CN108896398B (en) * | 2018-08-31 | 2021-03-26 | 中国航天空气动力技术研究院 | Dynamic calibration equipment for generating negative step load |
| CN109000848A (en) * | 2018-10-17 | 2018-12-14 | 济南大学 | A kind of pressure sensor dynamic calibration experimental rig for steel ball cold heading |
| CN110646135A (en) * | 2019-11-13 | 2020-01-03 | 吉林大学 | Horizontal push-pull dynamometer detector |
| CN111174969A (en) * | 2020-03-06 | 2020-05-19 | 合肥工业大学 | Dynamic calibration equipment for multi-dimensional force sensor generating negative step |
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