CN107330218A - Axial pin type sensor and its radial load demarcation and computational methods, device and system - Google Patents
Axial pin type sensor and its radial load demarcation and computational methods, device and system Download PDFInfo
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- 238000000205 computational method Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 38
- 238000002474 experimental method Methods 0.000 claims abstract description 27
- 239000011888 foil Substances 0.000 claims description 80
- 238000012360 testing method Methods 0.000 claims description 31
- 239000004575 stone Substances 0.000 claims description 13
- 238000012886 linear function Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000012163 sequencing technique Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 5
- 238000003062 neural network model Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
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- 230000036039 immunity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
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- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/005—Measuring force or stress, in general by electrical means and not provided for in G01L1/06 - G01L1/22
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- 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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
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Abstract
The present invention discloses a kind of axial pin type sensor and its radial load demarcation and computational methods, device and system.The axial pin type sensor radial load scaling method includes：The radial load model of axial pin type sensor is set up, wherein, the size and Orientation of radial load is respectively the function of two-way axial pin type sensor first direction output voltage and second direction output voltage, and wherein first direction and second direction is vertical；By loading the calibration experiment of radial load under different size and direction, the demarcation of radial load model is completed.Inventive sensor scaling method is easy and the nominal time is short, and computation model is simply easy to sequencing, so as to substantially increase computational accuracy and measurement efficiency.
Description
Technical field
The present invention relates to engineering machinery fields of measurement, more particularly to a kind of axial pin type sensor and its radial load demarcation and meter
Calculate methods, devices and systems.
Background technology
In Practical Project, stress method is typically punching or table in the middle of axle or pin at pin joint in measurement mechanical structure
The method arrangement foil gauge such as face fluting, constitutes corresponding bridge, and trying to achieve load value at hinge, i.e. axial pin type by strain senses
Device.This sensor can be played in machinery is hinged carrying effect, hinge load can be obtained again, with dual-use function, to hinge
The measurement of point power offers convenience.In mechanical engineering field, axial pin type sensor is widely used.
Traditional axial pin type sensor is the unidirectional bearing pin sensor based on double shear type foil gauge.Its principle is in bearing pin
Heart perforate and bearing pin clipped position open up groove.On centre bore inner groovy center, unidirectional force direction arrangement double shear type should
Become piece, and constitute Wheatstone bridge, unidirectional load is calculated by output value of electric bridge.This pin type sensor can only be to folk prescription
Measured to radial load.Some producers are improved this kind of sensor, in horizontally and vertically two sides of shaft section
To arrangement foil gauge, the bidirectional force shaft pin sensor of both direction load can be measured by being made.But in engineering practice, bearing pin institute
It is unfixed by the direction of radial load, therefore, for the measurement for radial load of changing direction, traditional axial pin type sensor is not
It is applicable, significantly limit application and use value of the bearing pin sensor in engineering field.
Radial load problem is measured for axial pin type sensor, there is a kind of demarcation side based on neural network model at present
Method.The loading force and output signal of different directions are input in neural network model or supporting vector machine model by this method
Row training, improves neural network model by substantial amounts of input signal, finally gives more accurate loading prediction value.
In prior art, want to ensure the precision of loading prediction value, the training of neural network model needs large sample
The input signal of amount, big which results in the workload of rating test, efficiency is low, and engineer applied is highly difficult.
The content of the invention
In view of above technical problem, the invention provides a kind of axial pin type sensor and its radial load demarcation and calculating side
Method, device and system, peg model are simply clear and definite, and service precision is high.
According to an aspect of the present invention there is provided a kind of axial pin type sensor radial load scaling method, including：
The radial load model of axial pin type sensor is set up, wherein, the size and Orientation of radial load is respectively two-way axial pin type
The function of sensor first direction output voltage and second direction output voltage, wherein first direction and second direction are vertical；
By loading the calibration experiment of radial load under different size and direction, the demarcation of radial load model is completed.
In one embodiment of the invention, the radial load model for setting up axial pin type sensor includes：In radial load
In the case of direction is unidirectional, the size of radial load is set as the linear function of one direction output voltage, wherein one direction is
First direction or second direction；
The calibration experiment includes：By loading different size of radial load, the demarcation of the linear function is completed.
In one embodiment of the invention, the radial load model for setting up axial pin type sensor includes：In radial load
In the case that direction is not first direction and second direction, the function for setting radial load size is relevant with resultant force coefficient, radial load
The function in direction is relevant with coefficient of angularity；
The calibration experiment includes：By loading the calibration experiment of radial load under different angles, resultant force coefficient and angle are determined
Spend coefficient；Numerical fitting is carried out to resultant force coefficient and coefficient of angularity, to complete the demarcation of radial load model.
In one embodiment of the invention, the different angles of the calibration experiment are in predetermined angular range, with predetermined
What angle interval was chosen.
In one embodiment of the invention, the predetermined angular range is 0-45 °.
In one embodiment of the invention, the predetermined angular intervals are 5 °.
In one embodiment of the invention, methods described also includes：
In at least one section of bearing pin inner surface circumference, four double shear type foil gauges are set, wherein, each two adjacent two
Individual double shear type foil gauge is separated by 90 °, and the first double shear type foil gauge and the second double shear type foil gauge are set in a first direction, the 3rd pair
Scissors-type foil gauge and the 4th double shear type foil gauge are arranged on second direction；
For each section, four foil gauges composition in two double shear type foil gauges that first party is set up is complete
Bridge favour Stone circuit, exports the first test voltage；Four strains in two double shear type foil gauges that second party is set up
Piece constitutes full-bridge favour Stone circuit, exports the second test voltage；
Average is taken at least one described first test voltage, as first direction output voltage, to it is described at least one
Second test voltage takes average, is used as second direction output voltage.
According to another aspect of the present invention there is provided a kind of axial pin type sensor radial load computational methods, including：
Obtain the first direction output voltage and second direction output voltage of two-way axial pin type sensor；
The first direction output voltage and second direction output voltage are inputted to the radial load model of axial pin type sensor,
It is determined that the size and Orientation of current radial load, wherein the radial load model is by the axial pin type described in any of the above-described embodiment
The demarcation of sensor radial load scaling method.
According to another aspect of the present invention there is provided a kind of axial pin type sensor radial load caliberating device, including：
Model building module, the radial load model for setting up axial pin type sensor, wherein, the size and Orientation of radial load
The function of respectively two-way axial pin type sensor first direction output voltage and second direction output voltage, wherein first direction and
Second direction is vertical；
Model calibration module, for the calibration experiment by loading radial load under different size and direction, completes radial load
The demarcation of model.
In one embodiment of the invention, model building module is used in the case of radial direction force direction is unidirectional,
The size of radial load is set as the linear function of one direction output voltage, wherein one direction is first direction or second direction；
Model calibration module is used to, by loading different size of radial load, complete the demarcation of the linear function.
In one embodiment of the invention, it is not first direction and second that model building module, which is used in radial direction force direction,
In the case of direction, the function for setting radial load size is relevant with resultant force coefficient, and function and the coefficient of angularity of radial direction force direction have
Close；
Model calibration module is used for the calibration experiment by loading radial load under different angles, determines resultant force coefficient and angle
Coefficient；Numerical fitting is carried out to resultant force coefficient and coefficient of angularity, to complete the demarcation of radial load model.
In one embodiment of the invention, the different angles of the calibration experiment are in predetermined angular range, with predetermined
What angle interval was chosen.
In one embodiment of the invention, the predetermined angular range is 0-45 °.
In one embodiment of the invention, the predetermined angular intervals are 5 °.
In one embodiment of the invention, the axial pin type sensor radial load caliberating device also includes：
Foil gauge setup module, for setting four double shear types to strain at least one section of bearing pin inner surface circumference
Piece, wherein, the two neighboring double shear type foil gauge of each two is separated by 90 °, the first double shear type foil gauge and the second double shear type foil gauge
Set in a first direction, the 3rd double shear type foil gauge and the 4th double shear type foil gauge are arranged on second direction；
Test voltage acquisition module, for for each section, two double shear types that first party is set up to be strained
Four foil gauges composition full-bridge favour Stone circuit in piece, exports the first test voltage；Two pairs that second party is set up
Four foil gauges composition full-bridge favour Stone circuit in scissors-type foil gauge, exports the second test voltage；
Output voltage computing module, it is defeated as first direction for taking average at least one described first test voltage
Go out voltage, average is taken at least one described second test voltage, second direction output voltage is used as.
According to another aspect of the present invention there is provided a kind of axial pin type sensor radial load computing system, including：
Output voltage acquisition device, first direction output voltage and second direction for obtaining two-way axial pin type sensor
Output voltage；
Radial load determining device, for the first direction output voltage and second direction output voltage to be inputted into axial pin type
The radial load model of sensor, it is determined that the size and Orientation of current radial load, wherein the radial load model is by above-mentioned
What the axial pin type sensor radial load caliberating device described in one embodiment was demarcated.
According to another aspect of the present invention there is provided a kind of axial pin type sensor, including as described in above-mentioned any embodiment
Axial pin type sensor radial load caliberating device or the axial pin type sensor radial load as described in above-mentioned any embodiment calculate system
System.
Peg model of the present invention is simply clear and definite, and service precision is high, is easy to engineer applied；Computation model of the present invention is simply easy
In sequencing, so as to substantially increase computational accuracy and measurement efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of axial pin type sensor radial load scaling method first embodiment of the present invention.
Fig. 2 is the schematic diagram of axial pin type sensor radial load scaling method second embodiment of the present invention.
Fig. 3 is the schematic diagram in one embodiment of the invention in axial pin type sensor setting foil gauge.
Fig. 4 is the schematic diagram of Fig. 3 axial pin type sensors Section A-A or section B-B.
Fig. 5 is the schematic diagram in one embodiment of the invention in X-direction setting double shear type foil gauge.
Fig. 6 is the circuit output schematic diagram of double shear type foil gauge on a direction in one embodiment of the invention.
Fig. 7 is the schematic diagram of axial pin type sensor radial load computational methods one embodiment of the present invention.
Fig. 8 is the schematic diagram of axial pin type sensor radial load caliberating device first embodiment of the present invention.
Fig. 9 is the schematic diagram of axial pin type sensor radial load caliberating device second embodiment of the present invention.
Figure 10 is the schematic diagram of axial pin type sensor radial load computing system one embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any limitation.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Do not limited the scope of the invention up to formula and numerical value.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the schematic diagram of axial pin type sensor radial load scaling method first embodiment of the present invention.It is preferred that, this implementation
Example can be performed by axial pin type sensor radial load caliberating device of the present invention.This method comprises the following steps：
Step 11, the radial load model of axial pin type sensor is set up, wherein, the size and Orientation of radial load is respectively two-way
The function of axial pin type sensor first direction output voltage and second direction output voltage, wherein first direction and second direction hang down
Directly.
Step 12, by loading the calibration experiment of radial load under different size and direction, the demarcation of radial load model is completed.
The axial pin type sensor radial load scaling method provided based on the above embodiment of the present invention, transducer calibration method letter
Just and the nominal time is short, computation model is simply easy to sequencing, so as to substantially increase computational accuracy and measurement efficiency.
Fig. 2 is the schematic diagram of axial pin type sensor radial load scaling method second embodiment of the present invention.Fig. 2 embodiments are figure
One kind of 1 embodiment is implemented.It is preferred that, the present embodiment can be held by axial pin type sensor radial load caliberating device of the present invention
OK.This method comprises the following steps：
Step 21, four double shear type foil gauges are set at least one section of bearing pin inner surface circumference, wherein, each two
Two neighboring double shear type foil gauge is separated by 90 °, and the first double shear type foil gauge and the second double shear type foil gauge are set in a first direction
(such as X-direction), the 3rd double shear type foil gauge and the 4th double shear type foil gauge are arranged on second direction (such as Y direction).
Fig. 3 is the schematic diagram in one embodiment of the invention in axial pin type sensor setting foil gauge., as shown in figure 3, axle
Pin sensor includes pivot pin 100 and 8 foil gauges 200, and 4 foil gauges are respectively arranged with Section A-A on section B-B.
Fig. 4 is the schematic diagram of Fig. 3 axial pin type sensors Section A-A or section B-B.As shown in figure 4, in bearing pin inner surface circle
(it is separated by 90 °) at 1,2,3,4 on all Section A-As and foil gauge 1,2,3,4 is respectively arranged by barbola work.
Fig. 5 is the schematic diagram in one embodiment of the invention in X-direction setting double shear type foil gauge.As shown in figure 5,1
Place arrangement 1 double shear type foil gauge 1a, 1b, are along the circumferential direction similar at 1 and arrange double shear type foil gauge, such as at 2 successively
Arrange 1 double shear type foil gauge 2a, 2b.Similarly, arrangement and Section A-A similar arrangement on bearing pin inner surface circumference section B-B
The foil gauge of mode.Its operation principle be sensor by external load function, by measuring shearing strain reverse external force (external applied load).
Step 22, for each section, four strains in two double shear type foil gauges that first party is set up
Piece constitutes full-bridge favour Stone circuit, exports the first test voltage；In two double shear type foil gauges that second party is set up
Four foil gauges constitute full-bridge favour Stone circuit, export the second test voltage.
Step 23, average is taken at least one described first test voltage, as first direction output voltage, to it is described extremely
Few second test voltage takes average, is used as second direction output voltage.
Fig. 6 is the circuit output schematic diagram of double shear type foil gauge on a direction in one embodiment of the invention.Such as Fig. 6 institutes
Show, step 22 and 23 can specifically include：Foil gauge 1a, 1b, 2c, 2d are constituted into a full-bridge favour Stone circuit, by such as Fig. 4 institutes
Show that the mode of connection connects each foil gauge, bridge output voltage u1；Similarly, foil gauge on position corresponding with 1,2 on section B-B
The same full-bridge circuit of composition, output voltage u2.By output voltage u1And u2Average, output voltage U are taken by logical processx, it is fixed
Justice is bearing pin X-direction output voltage.Similarly, after foil gauge full-bridge circuit is by logical process at Section A-A and section B-B 3,4
Output voltage Uy, it is defined as bearing pin Y-direction output voltage.
Step 24, the radial load model of axial pin type sensor is set up, wherein, the size and Orientation of radial load is respectively two-way
The function of axial pin type sensor first direction output voltage and second direction output voltage, wherein first direction and second direction hang down
Directly.
Step 25, by loading the calibration experiment of radial load under different size and direction, the demarcation of radial load model is completed.
In the above embodiment of the present invention, the radial load model can include one direction radial load model and non-one direction footpath
To power model, illustrate separately below.
Firstth, for being unidirectional situation in radial direction force direction, the size that can set radial load is exported as one direction
The linear function of voltage, wherein one direction are first direction or second direction.Can be complete by loading different size of radial load
Into the demarcation of the linear function.
For example：For Fig. 6 specific embodiment, can according to bearing pin sensor X-direction and Y-direction output voltage,
The linear relationship demarcated respectively between one direction output voltage and imposed load.For example：By applying different size of in X-direction
Load, the magnitude of voltage of measurement sensor output, can obtain the relation between X-direction output voltage and load, i.e.,：Fx=aUx+b；
Similarly, the relation between Y-direction output voltage and load, F can be obtainedy=cUy+d。
Secondth, for when radial direction force direction is not first direction and second direction, radial load size can be set
Function it is relevant with resultant force coefficient, the function of radial direction force direction is relevant with coefficient of angularity.By loading radial load under different angles
Calibration experiment, determine resultant force coefficient and coefficient of angularity；Numerical fitting is carried out to resultant force coefficient and coefficient of angularity, to complete radially
The demarcation of power model.
In one embodiment of the invention, the different angles of the calibration experiment are in predetermined angular range, with predetermined
What angle interval was chosen.
In one embodiment of the invention, the predetermined angular range is 0-45 °, due to shown in Fig. 4, four foil gauges
It is symmetrically arranged, therefore by being demarcated in 0-45 °, it is possible to realize to the angled demarcation of institute.
In one embodiment of the invention, the predetermined angular intervals are 5 °.The above embodiment of the present invention is only needed to 9 times
Demarcation can just complete calibration experiment.
In one particular embodiment of the present invention, when applying the load F of angled (non-one direction), X, two sides of Y
To output component Ux, UyIt is non-linear relation between load F, function f (U can be set upx,Uy)。
It can set：Wherein, fval(Ux,Uy) characterize load F sizes function,
fangl(Ux,Uy) it is the function for characterizing load F directions.
More specifically, can set：
By the calibration experiment under different load angles, resultant force coefficient k is determined1With coefficient of angularity k2, wherein resultant force coefficient k1
With coefficient of angularity k2RespectivelyFunction；Afterwards using 3 order polynomials to k1And k2Carry out numerical fitting.
The angular range of calibration experiment isAt intervals of 5 °, the size of loading force is the 20%- of transducer range
80%.
Afterwards, correlation computations model expression sequencing can be inputted any U in a program by the applicationx、UyIt is automatic defeated
Go out radial load F size and Orientation angle value.This computational methods passes through case verification, the computational accuracy of pin 360 degree radial load
It is all higher.
The above embodiment of the present invention, which solves traditional pin type sensor at present, can not measure any direction footpath in shaft section
To loading problem.The above embodiment of the present invention need to only utilize traditional two-way axial pin type sensor.The above embodiment of the present invention mark
The mathematical modeling for determining sensor is simply clear and definite, scaling method convenient and efficient, and service precision is high, is easy to engineer applied.The present invention
Above-described embodiment can in the range of smaller angle calibration sensor, the nominal time is short.
Fig. 7 is the schematic diagram of axial pin type sensor radial load computational methods one embodiment of the present invention.It is preferred that, this implementation
Example can be performed by axial pin type sensor radial load computing system of the present invention.This method comprises the following steps：
Step 71, the first direction output voltage and second direction output voltage of two-way axial pin type sensor are obtained, for example
Ux、Uy。
Step 72, the first direction output voltage and second direction output voltage are inputted to the radial direction of axial pin type sensor
Power model, it is determined that the size and Orientation of current radial load, wherein the radial load model be by any of the above-described embodiment (for example
Fig. 1 or Fig. 2 embodiments) described in axial pin type sensor radial load scaling method demarcation.
The axial pin type sensor radial load computational methods provided based on the above embodiment of the present invention, can obtain pivot pin pin joint
The size and Orientation of the radial load at place, solves the radial load test problem of pivot pin articulated position.
The above embodiment of the present invention proposes a kind of calibrated and calculated method of two-dimentional power axial pin type sensor radial load.Make pin
Shaft type sensor accurately measures deflecting radial load and is possibly realized, and one direction can only be measured radially by breaching traditional axial pin type sensor
The limitation of power.The transducer calibration method of the above embodiment of the present invention is easy and the nominal time is short, and computation model is simply easy to journey
Sequence, so as to substantially increase computational accuracy and measurement efficiency.The above embodiment of the present invention is simple in construction, easy to operate, widens
The application of the mechanical field of axial pin type sensor.
Fig. 8 is the schematic diagram of axial pin type sensor radial load caliberating device first embodiment of the present invention.As shown in figure 8, institute
Model building module 81 and model calibration module 82 can be included by stating axial pin type sensor radial load caliberating device, wherein：
Model building module 81, the radial load model for setting up axial pin type sensor, wherein, the size of radial load and side
To respectively two-way axial pin type sensor first direction output voltage and the function of second direction output voltage, wherein first direction
It is vertical with second direction.
Model calibration module 82, for the calibration experiment by loading radial load under different size and direction, is completed radially
The demarcation of power model.
In one embodiment of the invention, it is unidirectional feelings that model building module 81, which can be used in radial direction force direction,
Under condition, the size of radial load is set as the linear function of one direction output voltage, and wherein one direction is first direction or second party
To.Model calibration module 82 can be used for, by loading different size of radial load, completing the demarcation of the linear function.
In another embodiment of the invention, it is not first direction that model building module 81, which can be used in radial direction force direction,
In the case of second direction, the function for setting radial load size is relevant with resultant force coefficient, the function and angle of radial direction force direction
Coefficient is relevant.Model calibration module 82 can be used for the calibration experiment by loading radial load under different angles, determine force series
Number and coefficient of angularity；Numerical fitting is carried out to resultant force coefficient and coefficient of angularity, to complete the demarcation of radial load model.
In one embodiment of the invention, the different angles of the calibration experiment are in predetermined angular range, with predetermined
What angle interval was chosen.
In one embodiment of the invention, the predetermined angular range is 0-45 °.
In one embodiment of the invention, the predetermined angular intervals are 5 °.
The axial pin type sensor radial load caliberating device provided based on the above embodiment of the present invention, makes pin type sensor essence
Locating tab assembly deflecting radial load is possibly realized, and the limitation of one direction radial load can only be measured by breaching traditional axial pin type sensor.This
The transducer calibration method of invention above-described embodiment is easy and the nominal time is short, and computation model is simply easy to sequencing, so that greatly
Improve computational accuracy and measurement efficiency greatly.The above embodiment of the present invention is simple in construction, easy to operate, has widened axial pin type sensor
Mechanical field application.
Fig. 9 is the schematic diagram of axial pin type sensor radial load caliberating device second embodiment of the present invention.With implementing shown in Fig. 8
Example is compared, in the embodiment shown in fig. 9, and the axial pin type sensor radial load caliberating device can also include foil gauge and set mould
Block 83, test voltage acquisition module 84 and output voltage computing module 85, wherein：
Foil gauge setup module 83, for setting four double shear types to strain at least one section of bearing pin inner surface circumference
Piece, wherein, the two neighboring double shear type foil gauge of each two is separated by 90 °, the first double shear type foil gauge and the second double shear type foil gauge
Set in a first direction, the 3rd double shear type foil gauge and the 4th double shear type foil gauge are arranged on second direction.
Test voltage acquisition module 84, for for each section, two double shear types that first party is set up should
The four foil gauges composition full-bridge favour Stone circuit become in piece, exports the first test voltage；Two that second party is set up
Four foil gauges composition full-bridge favour Stone circuit in double shear type foil gauge, exports the second test voltage.
Output voltage computing module 85, for taking average at least one described first test voltage, is used as first direction
Output voltage, takes average at least one described second test voltage, is used as second direction output voltage.
The above embodiment of the present invention employs traditional two-way shaft pin sensor, measures shearing strain, and output signal is notable；This
Invention above-described embodiment employs full-bridge arrangement, strong interference immunity.The peg model of the above embodiment of the present invention is simply clear and definite, and
Service precision is high, is easy to engineer applied.The above embodiment of the present invention is in bearing pin sensor circumferential end facesIn the range of, every
Once, the nominal time is short for 5 ° of demarcation.
Figure 10 is the schematic diagram of axial pin type sensor radial load computing system one embodiment of the present invention.As illustrated, institute
Stating axial pin type sensor radial load computing system includes radial load model calibration device 8, output voltage acquisition device 6 and radial load
Determining device 7, wherein：
Output voltage acquisition device 6, first direction output voltage and second party for obtaining two-way axial pin type sensor
To output voltage.
Radial load model calibration device 8, the radial load model for pre-setting axial pin type sensor, and it is described to radially
Power model is demarcated.
In one embodiment of the invention, the radial load model calibration device 8 is that any of the above-described embodiment (is for example schemed
8 or Fig. 9 embodiments) described in axial pin type sensor radial load caliberating device.
Radial load determining device 7, for the first direction output voltage and second direction output voltage to be inputted into pivot pin
The radial load model of formula sensor, it is determined that the size and Orientation of current radial load.
The axial pin type sensor radial load computing system provided based on the above embodiment of the present invention, can obtain pivot pin pin joint
The size and Orientation of the radial load at place, solves the radial load test problem of pivot pin articulated position.
The above embodiment of the present invention proposes a kind of calibrated and calculated method of two-dimentional power axial pin type sensor radial load.Make pin
Shaft type sensor accurately measures deflecting radial load and is possibly realized, and one direction can only be measured radially by breaching traditional axial pin type sensor
The limitation of power.The transducer calibration method of the above embodiment of the present invention is easy and the nominal time is short, and computation model is simply easy to journey
Sequence, so as to substantially increase computational accuracy and measurement efficiency.The above embodiment of the present invention is simple in construction, easy to operate, widens
The application of the mechanical field of axial pin type sensor.
According to another aspect of the present invention there is provided a kind of axial pin type sensor, including as above-mentioned any embodiment (is such as schemed
8 or Fig. 9 embodiments) described in axial pin type sensor radial load caliberating device or as above-mentioned any embodiment (such as Figure 10 implement
Example) described in axial pin type sensor radial load computing system.
In one embodiment of the invention, the axial pin type sensor is two-way shaft pin sensor.
In one embodiment of the invention, the setting of axial pin type sensor and foil gauge and output circuit connection can be as
Shown in Fig. 3-Fig. 6 embodiments.
The above embodiment of the present invention employs traditional two-way shaft pin sensor, measures shearing strain, and output signal is notable；This
Invention above-described embodiment employs full-bridge arrangement, strong interference immunity.The peg model of the above embodiment of the present invention is simply clear and definite, and
Service precision is high, is easy to engineer applied.The above embodiment of the present invention is in bearing pin sensor circumferential end facesIn the range of, every
Once, the nominal time is short for 5 ° of demarcation.
Axial pin type sensor radial load caliberating device and axial pin type sensor radial load computing system described above can
To be embodied as at general processor, programmable logic controller (PLC) (PLC), data signal for performing function described herein
Manage device (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other PLDs, divide
Vertical door or transistor logic, discrete hardware components or it is any appropriately combined.
So far, the present invention is described in detail.In order to avoid the design of the masking present invention, this area institute is not described public
Some details known.Those skilled in the art can be appreciated how to implement technology disclosed herein as described above, completely
Scheme.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can be by hardware
To complete, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
Description of the invention is provided for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be more preferably to illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The solution present invention is so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (15)
1. a kind of axial pin type sensor radial load scaling method, it is characterised in that including：
The radial load model of axial pin type sensor is set up, wherein, the size and Orientation of radial load is respectively two-way axial pin type sensing
The function of device first direction output voltage and second direction output voltage, wherein first direction and second direction are vertical；
By loading the calibration experiment of radial load under different size and direction, the demarcation of radial load model is completed.
2. according to the method described in claim 1, it is characterised in that
The radial load model for setting up axial pin type sensor includes：In the case of radial direction force direction is unidirectional, footpath is set
To the linear function that the size of power is one direction output voltage, wherein one direction is first direction or second direction；
The calibration experiment includes：By loading different size of radial load, the demarcation of the linear function is completed.
3. method according to claim 1 or 2, it is characterised in that
The radial load model for setting up axial pin type sensor includes：It is not first direction and second direction in radial direction force direction
In the case of, the function for setting radial load size is relevant with resultant force coefficient, and the function of radial direction force direction is relevant with coefficient of angularity；
The calibration experiment includes：By loading the calibration experiment of radial load under different angles, resultant force coefficient and angle system are determined
Number；Numerical fitting is carried out to resultant force coefficient and coefficient of angularity, to complete the demarcation of radial load model.
4. method according to claim 3, it is characterised in that
The different angles of the calibration experiment are that in predetermined angular range, interval is chosen at a predetermined angle.
5. method according to claim 4, it is characterised in that
The predetermined angular range is 0-45 °；
And/or,
The predetermined angular intervals are 5 °.
6. method according to claim 1 or 2, it is characterised in that also include：
In at least one section of bearing pin inner surface circumference, four double shear type foil gauges are set, wherein, each two is two neighboring double
Scissors-type foil gauge is separated by 90 °, and the first double shear type foil gauge and the second double shear type foil gauge are set in a first direction, the 3rd double shear type
Foil gauge and the 4th double shear type foil gauge are arranged on second direction；
For each section, four foil gauges composition full-bridge favour in two double shear type foil gauges that first party is set up
Stone circuit, exports the first test voltage；Four foil gauge groups in two double shear type foil gauges that second party is set up
Into full-bridge favour Stone circuit, the second test voltage is exported；
Average is taken at least one described first test voltage, as first direction output voltage, to it is described at least one second
Test voltage takes average, is used as second direction output voltage.
7. a kind of axial pin type sensor radial load computational methods, it is characterised in that including：
Obtain the first direction output voltage and second direction output voltage of two-way axial pin type sensor；
The first direction output voltage and second direction output voltage are inputted to the radial load model of axial pin type sensor, it is determined that
The size and Orientation of current radial load, wherein the radial load model is by the pivot pin any one of claim 1-6
The demarcation of formula sensor radial load scaling method.
8. a kind of axial pin type sensor radial load caliberating device, it is characterised in that including：
Model building module, the radial load model for setting up axial pin type sensor, wherein, the size and Orientation difference of radial load
For two-way axial pin type sensor first direction output voltage and the function of second direction output voltage, wherein first direction and second
Direction is vertical；
Model calibration module, for the calibration experiment by loading radial load under different size and direction, completes radial load model
Demarcation.
9. axial pin type sensor radial load caliberating device according to claim 8, it is characterised in that
Model building module is used in the case of radial direction force direction is unidirectional, and the size for setting radial load is exported as one direction
The linear function of voltage, wherein one direction are first direction or second direction；
Model calibration module is used to, by loading different size of radial load, complete the demarcation of the linear function.
10. axial pin type sensor radial load caliberating device according to claim 8 or claim 9, it is characterised in that
Model building module is used in the case where radial direction force direction is not first direction and second direction, sets radial load size
Function it is relevant with resultant force coefficient, the function of radial direction force direction is relevant with coefficient of angularity；
Model calibration module is used for the calibration experiment by loading radial load under different angles, determines resultant force coefficient and angle system
Number；Numerical fitting is carried out to resultant force coefficient and coefficient of angularity, to complete the demarcation of radial load model.
11. axial pin type sensor radial load caliberating device according to claim 10, it is characterised in that
The different angles of the calibration experiment are that in predetermined angular range, interval is chosen at a predetermined angle.
12. axial pin type sensor radial load caliberating device according to claim 11, it is characterised in that
The predetermined angular range is 0-45 °；
And/or,
The predetermined angular intervals are 5 °.
13. axial pin type sensor radial load caliberating device according to claim 8 or claim 9, it is characterised in that also include：
Foil gauge setup module, for setting four double shear type foil gauges at least one section of bearing pin inner surface circumference, its
In, the two neighboring double shear type foil gauge of each two is separated by 90 °, and the first double shear type foil gauge and the second double shear type foil gauge are arranged on
First direction, the 3rd double shear type foil gauge and the 4th double shear type foil gauge are arranged on second direction；
Test voltage acquisition module, for for each section, in two double shear type foil gauges that first party is set up
Four foil gauges composition full-bridge favour Stone circuit, export the first test voltage；Two double shear types that second party is set up
Four foil gauges composition full-bridge favour Stone circuit in foil gauge, exports the second test voltage；
Output voltage computing module, for taking average at least one described first test voltage, electricity is exported as first direction
Pressure, takes average at least one described second test voltage, is used as second direction output voltage.
14. a kind of axial pin type sensor radial load computing system, it is characterised in that including：
Output voltage acquisition device, first direction output voltage and second direction output for obtaining two-way axial pin type sensor
Voltage；
Radial load determining device, for the first direction output voltage and second direction output voltage input axial pin type to be sensed
The radial load model of device, it is determined that the size and Orientation of current radial load, wherein the radial load model is by claim 8-
What the axial pin type sensor radial load caliberating device any one of 13 was demarcated.
15. a kind of axial pin type sensor, it is characterised in that including the axial pin type sensing as any one of claim 8-13
Device radial load caliberating device or axial pin type sensor radial load computing system as claimed in claim 14.
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| CN108844666A (en) * | 2018-05-14 | 2018-11-20 | 南京农业大学 | A kind of tractor suspension device for measuring force |
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| CN115371858A (en) * | 2022-08-03 | 2022-11-22 | 中联重科股份有限公司 | Signal processing method, system, device and measurement method of pin sensing component |
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