CN105784219B - A kind of torque sensor and its test system - Google Patents
A kind of torque sensor and its test system Download PDFInfo
- Publication number
- CN105784219B CN105784219B CN201510958776.9A CN201510958776A CN105784219B CN 105784219 B CN105784219 B CN 105784219B CN 201510958776 A CN201510958776 A CN 201510958776A CN 105784219 B CN105784219 B CN 105784219B
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- spoke
- torque
- spokes
- torque sensor
- ring flange
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- 239000000835 fiber Substances 0.000 claims abstract description 67
- 238000005538 encapsulation Methods 0.000 claims abstract description 22
- 230000001681 protective effect Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 abstract description 6
- 239000013307 optical fiber Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of torque sensor and its test systems.The torque sensor includes：More spokes, every spoke are respectively used to encapsulate a fiber grating；Two ring flanges, are separately positioned on the both ends of every spoke；Every spoke forms equal angular with ring flange, and more spokes and two ring flange one integral piece processing, a plurality of fiber grating of more spokes encapsulation are connected in series with.In the above manner, the present invention realizes optical signal parameter operation by fiber grating, the ability of electromagnetism interference is strong, and small, light-weight, is easily installed.
Description
Technical field
The present invention relates to torque sensor technology fields, more particularly to a kind of torque sensor and its test system.
Background technology
In machine driven system, torque is one of the most typically mechanical quantity for reflecting production equipment system performance, torque measuring
Amount and analysis are to ensure various productions and the safe normal operation of ancillary equipment, save the energy, improve the important means of system effectiveness.
Accuracy, the reliability of torque monitoring and the real-time of control and torque anomaly analysis for improving torque measurement are to reduce thing
Therefore occur, the important means for making production be normally carried out.And current torque sensor cannot achieve optical signal parameter operation, anti-electricity
The ability of magnetic disturbance is low.
Invention content
The invention mainly solves the technical problem of providing a kind of torque sensor and its test systems, to solve above-mentioned ask
Topic.
In order to solve the above technical problems, one aspect of the present invention is：A kind of torque sensor is provided, is wrapped
It includes：More spokes, every spoke are respectively used to encapsulate a fiber grating；Two ring flanges, are separately positioned on the two of every spoke
End；Every spoke forms equal angular, and more spokes and two ring flange one integral piece processing, more spoke encapsulation with ring flange
A plurality of fiber grating be connected in series with.
Wherein, torque sensor further comprises protective shell, for protecting spoke and ring flange, protective shell to be provided with optical fiber
Adapter, the one end for a plurality of fiber grating being connected in series with and the input terminal of fiber adapter connect.
Wherein, more spokes are four spokes, and four fiber gratings of four spokes encapsulation are connected in series with.
Wherein, angle ranging from be greater than or equal to 25 ° and be less than or equal to 30 °.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of test system is provided, is wrapped
It includes：Engine；One end of transmission shaft, transmission shaft is connect with engine；Torque sensor, including：More spokes, every spoke are each
For encapsulating a fiber grating；Two ring flanges, are separately positioned on the both ends of every spoke, and every spoke is formed with ring flange
Equal angular, and more spokes and two ring flange one integral piece processing, a plurality of fiber grating of more spokes encapsulation are connected in series with；
The other end of transmission shaft is connect with ring flange, and engine drives torque sensor to rotate by transmission shaft, so that torque sensor
Generate torque；Test machine is connect with torque sensor, initial wavelength for obtaining fiber grating and passes through first after spoke
Wavelength, test machine calculate the torque of spoke according to the wavelength difference between first wave length and initial wavelength.
Wherein, the torque of spoke meets following formula：
P=(λ 1- λ 10) * n
Wherein, n is torque coefficient；P is the torque of spoke；λ 1 is first wave length；λ 10 is initial wavelength.
Wherein, more spokes are four spokes, and four fiber gratings of four spokes encapsulation are connected in series with.
Wherein, the torque of torque sensor meets following formula：
P=(p1+p2+p3+p4)/4
Wherein, P is the torque of torque sensor；p1、p2、p3And p4The torque of respectively four spokes.
Wherein, angle ranging from be greater than or equal to 25 ° and be less than or equal to 30 °.
Wherein, torque sensor further comprises protective shell, for protecting spoke and ring flange, protective shell to be provided with optical fiber
Adapter, the one end for a plurality of fiber grating being connected in series with and the input terminal of fiber adapter connect.
The beneficial effects of the invention are as follows：The case where being different from the prior art, torque sensor of the invention include：More spokes
Item, every spoke are respectively used to encapsulate a fiber grating；Two ring flanges, are separately positioned on the both ends of every spoke；Every spoke
Item forms equal angular, and more spokes and two ring flange one integral piece processing, a plurality of light of more spokes encapsulation with ring flange
Fine gratings in series connection；Optical signal parameter operation is realized by fiber grating, and the ability of electromagnetism interference is strong, and volume
It is small, light-weight, it is easily installed.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it may further obtain according to these attached drawings
Other attached drawings.Wherein：
Fig. 1 is the spoke of the torque sensor of first embodiment of the invention and the stereogram of ring flange；
Fig. 2 is the stereogram of the protective shell of the torque sensor of first embodiment of the invention；
Fig. 3 is the stereogram of the upper cover of torque sensor shown in FIG. 1；
Fig. 4 is the stereogram of the inner cylinder of torque sensor shown in FIG. 1；
Fig. 5 is the stereogram of the sleeve of torque sensor shown in FIG. 1；
Fig. 6 is the stereogram of the lower cover of torque sensor shown in FIG. 1；
Fig. 7 is the structural schematic diagram of the test system of first embodiment of the invention；
Fig. 8 is the connection diagram in kind of test system shown in Fig. 7.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are obtained every other under the premise of not making performing creative labour
Embodiment shall fall within the protection scope of the present invention.
It refers to shown in Fig. 1-2, Fig. 1 is the spoke of the torque sensor of first embodiment of the invention and the solid of ring flange
Figure；Fig. 2 is the stereogram of the protective shell of the torque sensor of first embodiment of the invention.The revealed torque sensing of the present embodiment
Device includes 11, two ring flanges 12 of more spokes and protective shell 13.
Wherein, every spoke 11 is respectively used to encapsulate a fiber grating (figure does not regard), a plurality of light of more spokes 11 encapsulation
Fine gratings in series connection.Two ring flanges 12 are separately positioned on the both ends of each spoke 11, every spoke 11 and 12 shape of ring flange
At equal angular.
Preferably, more spokes 11 are four spokes, specially first spoke 111, second spokes 112, third roots
Spoke 113 and the 4th spoke 114, as shown in Figure 1.One end of first spoke 111, one end of second spoke 112,
One end of three spokes 113 and one end of the 4th spoke 114 are arranged on a ring flange 12；First spoke 111
The other end, second spoke 112 the other end, the other end of third root spoke 113 and the other end of the 4th spoke 114
It is arranged on another ring flange 12, and then first spoke, 111, second spokes 112, third root spoke 113 and
Four spokes 114 form equal angular with ring flange 12.
Preferably, more spokes 11 and two 12 one integral piece of ring flange processing, i.e. first spoke, 111, second spokes
112, third root spoke 113 and the 4th spoke 114 and two 12 one integral piece of ring flange are processed, and are integrally formed.Every spoke 11
It is required for carrying out drop stress processing, can improve the precision of torque sensor, i.e. first spoke, 111, second spokes 112,
The setting of the thickness of third root spoke 113 and the 4th spoke 114 is than relatively thin, to realize drop stress processing.
Four fiber gratings of four spokes 11 encapsulation are connected in series with, the fiber grating of first spoke 111 encapsulation, second
The light of fiber grating, the fiber grating that third root spoke 113 encapsulates and the encapsulation of the 4th spoke 114 that root spoke 112 encapsulates
The connection of fine gratings in series, i.e. fiber grating that the fiber grating of first spoke 111 encapsulation, second spoke 112 encapsulate, third
The fiber grating head and the tail that the fiber grating and the 4th spoke 114 that root spoke 113 encapsulates encapsulate are together in series.
Optionally, mounting hole 121 and through-hole 122 there are four being respectively provided on each ring flange 12, as shown in Figure 1, ring flange
12 are mounted on by four through-holes 121 in other structures, and through-hole 122 is for being arranged protective shell 13.
Protective shell 13 is for protecting more spokes 11 and two ring flanges 12, as shown in Figure 2.Wherein, protective shell 13 is arranged
There are fiber adapter 131, fiber adapter 131 to be arranged in the outer surface of protective shell 13.The a plurality of fiber grating being connected in series with
One end is connect with the input terminal of fiber adapter 131, that is, the fiber grating of the encapsulation of first be connected in series with piece spoke 111, second
The light of fiber grating, the fiber grating that third root spoke 113 encapsulates and the encapsulation of the 4th spoke 114 that root spoke 112 encapsulates
One end of fine grating is connect with the input terminal of fiber adapter 131；The other end and optical fiber for a plurality of fiber grating being connected in series with
Sensing analysis instrument (figure does not regard) connection, that is, fiber grating, second spoke 112 of first spoke 111 encapsulation being connected in series with
The fiber grating of fiber grating and the encapsulation of the 4th spoke 114 that the fiber grating of encapsulation, third root spoke 113 encapsulate it is another
One end is connect with optical fiber sensing analyzer, so that optical fiber sensing analyzer obtains the wavelength of a plurality of fiber grating.
Please also refer to shown in Fig. 3-6, protective shell 13 further comprises upper cover 132, inner cylinder 133, sleeve 134 and lower cover
135, upper cover 132 as shown in figure 3, inner cylinder 133 as shown in figure 4, sleeve 134 as shown in figure 5, lower cover 135 is as shown in Figure 6.First
Inner cylinder 133 is arranged in the through-hole 122 of ring flange 12, and sleeve 134 is then entangled more spokes 11, finally by 132 He of upper cover
Lower cover 135 is fixed with inner cylinder 133 and sleeve 134, and fiber adapter 131 is arranged on sleeve 134.
Wherein, angle ranges preferably from more than or equal to 25 ° and is less than or equal to 30 °, in the present embodiment angle
Choose 25 °.
The revealed torque sensor of the present embodiment generates torque, and a plurality of light of more spokes 11 encapsulation in rotation
Fine gratings in series connection, and then optical signal parameter operation is realized by fiber grating, the ability of electromagnetism interference is strong, and body
Product is small, light-weight, is easily installed.
The present invention also provides the test systems of first embodiment, in the base of the revealed torque sensor of first embodiment
It is described on plinth.As Figure 7-8, the revealed test system of the present embodiment includes：Engine 71, transmission shaft 72, torque
Sensor 73 and test machine 74.Wherein, torque sensor 73 is torque sensor described in above-described embodiment, herein no longer
It repeats.Engine 71, transmission shaft 72, the connection figure in kind of torque sensor 73 and test machine 74 are as shown in Figure 8.
Wherein, one end of transmission shaft 72 is connect with engine 71, and the other end of transmission shaft 72 is connect with torque sensor 73,
Preferably the other end of transmission shaft 72 is connect with the ring flange 12 of torque sensor 73.When engine 71 starts, engine 71
Torque sensor 73 is driven to rotate by transmission shaft 72, so that torque sensor 73 generates torque, produced by torque sensor 73
Torque the wavelength of fiber grating that spoke 11 encapsulates can be made to change.
Test machine 74 is connect with torque sensor 73, the screw hole and torque that test machine 74 passes through 73 both ends of torque sensor
Sensor 73 is fixed, i.e., test machine 74 is connect with the other end of fiber adapter 131 and a plurality of fiber grating being connected in series with, and is used
In obtain every spoke 11 fiber grating initial wavelength λ 10 and pass through the first wave length λ 1 after spoke, 74 basis of test machine
Wavelength difference between first wave length λ 1 and initial wavelength λ 10 calculates the torque of every spoke 11.
Wherein, the torque of every spoke 11 meets following formula：
P=(λ 1- λ 10) * n (1)
Wherein, n is torque coefficient；P is the torque of spoke；λ 1 is first wave length；λ 10 is initial wavelength；Test machine 74
The torque of every spoke 11 is calculated according to formula (1).
Specifically, the torque of first spoke 111 meets following formula：
p1=(λ 1- λ 10) * n (2)
Wherein, n is torque coefficient；p1For the torque of first spoke 111；λ 1 is the fiber grating of first spoke 111
First wave length；λ 10 is the initial wavelength of the fiber grating of first spoke 111.
The torque of second spoke 112 meets following formula：
p2=(λ 2- λ 20) * n (3)
Wherein, n is torque coefficient；p2For the torque of second spoke 112；λ 2 is the fiber grating of second spoke 112
First wave length；λ 20 is the initial wavelength of the fiber grating of second spoke 112.
The torque of third root spoke 113 meets following formula：
p3=(λ 3- λ 30) * n (4)
Wherein, n is torque coefficient；p3For the torque of third root spoke 113；λ 3 is the fiber grating of third root spoke 113
First wave length；λ 30 is the initial wavelength of the fiber grating of third root spoke 113.
The torque of 4th spoke 114 meets following formula：
p4=(λ 4- λ 40) * n (5)
Wherein, n is torque coefficient；p4For the torque of the 4th spoke 114；λ 4 is the fiber grating of the 4th spoke 114
First wave length；λ 40 is the initial wavelength of the fiber grating of the 4th spoke 114.
The torque of torque sensor 73 meets following formula：
P=(p1+p2+p3+p4)/4 (6)
Wherein, P is the torque of torque sensor 73；p1、p2、p3And p4The torque of respectively four spokes 11, i.e. p1For
The torque of first spoke 111；p2For the torque of second spoke 112；p3For the torque of third root spoke 113；p4It is the 4th
The torque of spoke 114.Test machine 74 obtains the torque of torque sensor 73, energy according to formula (2), (3), (4), (5) and (6)
The error that test machine 74 measures enough is reduced, improves accuracy of detection, stability is good.
The revealed test system of the present embodiment can also measure static torque, can also measure dynamic torque；In addition, surveying
The torque sensor 73 of test system uses optical signal parameter operation, and anti-electromagnetic interference capability is strong, small, light-weight, is easy to pacify
Dress；In addition, need not return to zero repeatedly can follow-on test torque for test system；In addition, torque sensor 73 is not provided with and leads
The wear-out parts such as electric ring, being capable of long-time high-speed cruising.
In conclusion the torque sensor of the present invention includes：More spokes, every spoke are respectively used to encapsulate an optical fiber light
Grid；Two ring flanges, are separately positioned on the both ends of every spoke；Every spoke forms equal angular, and more with ring flange
Spoke and two ring flange one integral piece processing, a plurality of fiber grating of more spokes encapsulation are connected in series with；By fiber grating come real
Existing optical signal parameter operation, the ability of electromagnetism interference is strong, and small, light-weight, is easily installed.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of torque sensor, which is characterized in that the torque sensor includes：
More spokes, the every spoke are respectively used to encapsulate a fiber grating；
Two ring flanges, are separately positioned on the both ends of the every spoke；
The every spoke forms equal angular, and the more spokes and described two ring flange one integral piece with the ring flange
The a plurality of fiber grating of processing, the more spokes encapsulation is connected in series with；
The spoke and described two ring flange axis are formed by ranging from being greater than or equal to 25 ° and being less than or wait for angle
In 30 °.
2. torque sensor according to claim 1, which is characterized in that the torque sensor further comprises protecting
Shell, for protecting the spoke and the ring flange, the protective shell to be provided with fiber adapter, what is be connected in series with is described a plurality of
One end of fiber grating is connect with the input terminal of the fiber adapter.
3. torque sensor according to claim 2, which is characterized in that the more spokes be four spokes, described four
Four fiber gratings of root spoke encapsulation are connected in series with.
4. a kind of test system, which is characterized in that the test system includes：
Engine；
One end of transmission shaft, the transmission shaft is connected with the engine；
Torque sensor, including：
More spokes, the every spoke are respectively used to encapsulate a fiber grating；
Two ring flanges, are separately positioned on the both ends of the every spoke, and the every spoke forms identical with the ring flange
Angle, and the more spokes and the processing of described two ring flange one integral piece, a plurality of fiber grating of the more spokes encapsulation
It is connected in series with；
The other end of the transmission shaft is connect with the ring flange, and the engine drives the torque to pass by the transmission shaft
Sensor rotates, so that the torque sensor generates torque；
Test machine is connect with the torque sensor, initial wavelength for obtaining the fiber grating and passes through the spoke
First wave length afterwards, the test machine calculate the spoke according to the wavelength difference between the first wave length and the initial wavelength
The torque of item.
5. test system according to claim 4, which is characterized in that the torque of the spoke meets following formula：
P=(λ 1- λ 10) * n
Wherein, n is torque coefficient；P is the torque of the spoke；λ 1 is the first wave length；λ 10 is the initial wavelength.
6. test system according to claim 5, which is characterized in that the more spokes be four spokes, described four
Four fiber gratings of spoke encapsulation are connected in series with.
7. test system according to claim 6, which is characterized in that the torque of the torque sensor meets following public
Formula：
P=(p1+p2+p3+p4)/4
Wherein, P is the torque of the torque sensor；p1、p2、p3And p4The torque of respectively described four spokes.
8. test system according to claim 4, which is characterized in that the spoke and described two ring flange axis institutes shape
At angle ranging from be greater than or equal to 25 ° and be less than or equal to 30 °.
9. test system according to claim 4, which is characterized in that the torque sensor further comprises protective shell,
For protecting the spoke and the ring flange, the protective shell to be provided with fiber adapter, a plurality of light being connected in series with
One end of fine grating is connect with the input terminal of the fiber adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510958776.9A CN105784219B (en) | 2015-12-17 | 2015-12-17 | A kind of torque sensor and its test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510958776.9A CN105784219B (en) | 2015-12-17 | 2015-12-17 | A kind of torque sensor and its test system |
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| Publication Number | Publication Date |
|---|---|
| CN105784219A CN105784219A (en) | 2016-07-20 |
| CN105784219B true CN105784219B (en) | 2018-08-28 |
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| CN201510958776.9A Expired - Fee Related CN105784219B (en) | 2015-12-17 | 2015-12-17 | A kind of torque sensor and its test system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576429A (en) * | 2017-08-14 | 2018-01-12 | 武汉理工大学 | A kind of torque sensor device based on fiber grating |
| JP6976892B2 (en) | 2018-03-29 | 2021-12-08 | 日本電産コパル電子株式会社 | Torque sensor |
| CN114152374B (en) * | 2021-11-09 | 2022-10-04 | 天津大学 | High-precision micro torque sensor based on fiber Bragg grating |
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