CN104034463B - A kind of high linearity segmentation excitation type torque sensor - Google Patents
A kind of high linearity segmentation excitation type torque sensor Download PDFInfo
- Publication number
- CN104034463B CN104034463B CN201410258858.8A CN201410258858A CN104034463B CN 104034463 B CN104034463 B CN 104034463B CN 201410258858 A CN201410258858 A CN 201410258858A CN 104034463 B CN104034463 B CN 104034463B
- Authority
- CN
- China
- Prior art keywords
- winding
- iron core
- axis
- field winding
- inner ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
A kind of high linearity segmentation excitation type torque sensor, mainly comprise sensor axis, inner ring is unshakable in one's determination, first paragraph field winding, compensative winding, outer shroud is unshakable in one's determination, export winding and second segment field winding, first paragraph field winding and compensative winding are fixed in inner ring iron core, two phase windings are spatially orthogonal, second segment field winding and output winding are fixed in outer shroud iron core, two phase windings are spatially also orthogonal, during working sensor, two sections of field winding serial connections, pass into sinusoidal alternating voltage, when sensor axis is subject to load torque effect, second segment field winding and output winding position spatially, change relative to during initial non-loaded torsional interaction, through electromagnetic coupled, export winding and produce the induction electromotive force corresponding with load torque, by the number of turn and the number of turn exporting winding of reasonable adjusting two sections of field windings, the induction electromotive force and the linear corresponding relation of load torque in height that export winding generation can be made.
Description
Technical field
The present invention relates to a kind of New-type Torque Sensor, relate to a kind of high linearity segmentation excitation type torque sensor based on magneto-electric induction principle more specifically.
Background technology
Along with the continuous progress of science and technology and the various needs of production development, torque measurement techniques obtains a wide range of applications in multiple fields such as industry, Aero-Space, agricultural, military affairs.Such as in plastic shell low voltage breaker intelligent observing and controlling system, adopt torque sensor motor shaft output torque is detected in real time, when screwdriver to nut lock to a certain extent time, the instantaneous increase of moment of torsion, Torque sensor detects this step signal, controls motor stalling.
At present in torque measurement, transmit the application of class torque sensor very extensive, transmit class torque sensor and can be divided into optical profile type, photo-electric, magneto-electric, strain-type, condenser type etc. by the producing method of torque signal, wherein more ripe on market torque sensor is magneto-electric and strain-type mainly.The essence of Torque sensor output signal is the dephased angular displacement signal of two-way tool, torque information is obtained after combined treatment is carried out to signal, it is non-contacting sensor, without wearing and tearing, without friction, can be used for long-term measurement, weak point is that volume is large, not easily installs, and all there are production in German HBM company, Japan's little open country survey device and Chinese western Hunan instrucment and meter plant, strain gauge torque transducer take resistance strain gage as sensitive element, as the T1 of German HBM company, T2, T4 series torque sensor, the JN338 series sensor etc. of the brilliant group in Beijing three, they install four precise resistance/strain sheets in rotating shaft or the elastic shaft that is connected in series with rotating shaft, and connect into Hui Sidun electric bridge, moment of torsion makes the microdeformation of axle cause strain resistance to change, signal and the moment of torsion of electric bridge output are proportional, sensor can measure Static and dynamic torque, high-frequency percussion and vibration information, there is the advantages such as small in volume, weak point is that the transmission of signal is easily disturbed and loss is larger, measuring accuracy is caused not to be very high.
Summary of the invention
The invention provides a kind of new construction high linearity segmentation excitation type torque sensor, mainly comprise sensor axis, inner ring iron core, first paragraph field winding, compensative winding, outer shroud iron core, second segment field winding and export winding.First paragraph field winding and compensative winding are fixed in inner ring iron core, and two phase windings are spatially orthogonal, and second segment field winding and output winding are fixed in outer shroud iron core, and two phase windings are spatially also orthogonal.
During working sensor, two sections of field winding serial connections, pass into sinusoidal alternating voltage, during non-loaded torsional interaction, the axis of first paragraph field winding is identical with the axis position spatially of second segment field winding, the axis of compensative winding is also identical with the axis position spatially exporting winding, and the pulsating magnetic flux that field winding produces and output winding are without linkage, and the induction electromotive force exporting winding is zero; When sensor axis is subject to load torque effect, second segment field winding reversed certain space angle with output winding simultaneously, initial position relatively during non-loaded torsional interaction there occurs change, pulsating magnetic flux and the output winding linkage of now field winding generation, through electromagnetic coupled, export winding and produce the induction electromotive force corresponding with load torque, by the number of turn and the number of turn exporting winding of reasonable adjusting two sections of field windings, the induction electromotive force and the linear relationship of load torque in height that export winding generation can be made.
Object of the present invention takes following technical proposals to realize:
A kind of high linearity segmentation excitation type torque sensor, mainly comprises sensor axis, inner ring iron core, first paragraph field winding, compensative winding, outer shroud iron core, exports winding and second segment field winding;
Left end and the sensor axis of inner ring iron core are fixed, and the right-hand member of inner ring iron core to be contacted with sensor axis by bearing and can rotate by relative sensors axle;
Right-hand member and the sensor axis of outer shroud iron core are fixed, and the left end of outer shroud iron core contacts by bearing and inner ring are unshakable in one's determination and can rotate relative to inner ring iron core;
Inner ring iron core is provided with slot for winding, and first paragraph field winding and compensative winding embed in inner ring slot for winding unshakable in one's determination, and the axis of the axis of first paragraph field winding and compensative winding is spatially orthogonal;
Outer shroud iron core is provided with slot for winding, and second segment field winding and output winding embed in outer shroud slot for winding unshakable in one's determination, and the axis of second segment field winding is spatially orthogonal with the axis exporting winding;
During non-loaded torsional interaction, spatially position is identical for the axis of first paragraph field winding and the axis of second segment field winding, and spatially position is identical for axis and the axis exporting winding of compensative winding.
The first paragraph field winding embedded in inner ring iron core is that series system is connected with the second segment field winding embedded in outer shroud iron core, passes into sinusoidal voltage during work:
Embed the direct short circuit of two ends extension line of the compensative winding in inner ring iron core;
The number of turn of second segment field winding is identical with the number of turn exporting winding.
Ratio between the number of turn of first paragraph field winding and the number of turn exporting winding is between 0.56-0.59.
Structure described above, novel high linearity segmentation excitation type torque sensor of the present invention, its principle of work is:
Pass into sinusoidal voltage after first paragraph field winding and second segment field winding serial connection, and then produce the time dependent impulsive magnetic field of magnetic potential amplitude, form closed-loop path via outer shroud iron core, air-gap and inner ring iron core.Sensor axis one end is fixed, the other end loads moment of torsion, when load torque is zero, there is not deformation in sensor axis, the inner ring of fixing with sensor axis two ends respectively initial position unshakable in one's determination and outer shroud iron core remains unchanged, be fixed on the first paragraph field winding of inner ring iron core and be fixed on the output winding of outer shroud iron core, its initial position is mutual deviation 90 ° spatially, be fixed on the second segment field winding of outer shroud iron core and export winding, its initial position is mutual deviation 90 ° spatially, the axis of first paragraph field winding is identical with the axis position spatially of second segment field winding, the axis of compensative winding is also identical with the axis position spatially exporting winding, now excitatory magnetic field is d-axis magnetic field, with output winding without interlinkage, the induction electromotive force exporting winding generation is zero, when load torque is non-vanishing, sensor axis generation deformation, second segment field winding and output winding reversed certain space angle simultaneously, relative initial position changes, the excitatory magnetic field that field winding produces and output winding interlinkage, export winding and produce corresponding induction electromotive force, this induction electromotive force is corresponding with the load torque that sensor axis loads.
Now second segment field winding turns over certain space angle relative to initial position, there is quadrature axis component in the pulsating magnetic flux that second segment field winding produces, due to the direct short circuit of compensative winding, and the impedance of compensative winding is very little, according to Lenz law, compensative winding produces the magnetic field of resisting with this quadrature axis magnetic field, and magnetic field when ensureing working sensor only has d-axis magnetic field substantially.
In order to the induction electromotive force making sensor export winding generation becomes linear relationship highly with load torque, the number of turn of second segment field winding is identical with the number of turn exporting winding, and the number of turn ratio of the number of turn of first paragraph field winding and output winding should between 0.56-0.59.
Structure described above, the novel high linearity segmentation excitation type torque sensor that the present invention utilizes electromagnetic induction principle to form, sensor axis one end is fixed, one end and load are coaxially installed, load torque can be converted to electric signal to export, and the electric signal exporting winding generation is highly corresponding linear relationship with load torque.
Accompanying drawing explanation
Fig. 1 is the structural representation of high linearity segmentation excitation type torque sensor of the present invention;
Fig. 2 is the cut-open view in the A-A face of Fig. 1;
Fig. 3 is the fundamental diagram that torque measurement implemented by torque sensor of the present invention;
Fig. 4 is the fundamental diagram of compensative winding in Fig. 2.
Embodiment
The architectural feature of torque sensor of the present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of torque sensor of the present invention, comprises sensor axis 1, bearing 2, inner ring iron core 3, first paragraph field winding winding 4, compensative winding 5, outer shroud iron core 6, second segment field winding 7, exports winding 8 and bearing 9.
The left end of inner ring iron core 3 and sensor axis 1 are fixed, and the right-hand member of inner ring iron core 3 to be contacted with sensor axis 1 by bearing 2 and can rotate by relative sensors axle 1.
Right-hand member and the sensor axis 1 of outer shroud iron core 6 are fixed, and the left end of outer shroud iron core 6 passes through bearing 9 and contacts with inner ring unshakable in one's determination 3 and can rotate relative to inner ring unshakable in one's determination 3.
Inner ring iron core 3 is provided with slot for winding, and first paragraph field winding 4 and compensative winding 5 embed in inner ring 3 slot for windings unshakable in one's determination.
Outer shroud iron core 6 is provided with slot for winding, and second segment field winding 7 and output winding 8 embed in the slot for winding of outer shroud iron core 6.
The first paragraph field winding 4 embedded in inner ring iron core 3 is connected for series system with the second segment field winding 7 embedded in outer shroud iron core 6, passes into sinusoidal voltage during work.
Embed the direct short circuit of two ends extension line of the compensative winding 5 in inner ring iron core 3.
The number of turn embedding second segment field winding 7 in outer shroud iron core 6 is identical with the number of turn of the output winding 8 embedded in outer shroud iron core 6.
The ratio embedded between the number of turn of the first paragraph field winding 4 in inner ring iron core 3 and the number of turn embedding the output winding 8 in outer shroud iron core 6 is between 0.56-0.59.
The material of sensor axis 1 is the material such as carbon steel or alloy steel; Inner ring unshakable in one's determination 3 and outer shroud iron core 6 are laminated by the fe-Ni soft magnetic alloy sheet of high magnetic permeability or the punching of high magnetic conductivity siliconized plate and form; First paragraph field winding 4, compensative winding 5, second segment field winding 7 and output winding 8 are straight weldering property polyurethane enamel insulated round copper wire.
Fig. 2 is the cut-open view in the A-A face of Fig. 1, comprises sensor axis 1, inner ring iron core 3, first paragraph field winding winding 4, compensative winding 5, outer shroud iron core 6, second segment field winding 7 and exports winding 8.
Inner ring iron core 3 is provided with slot for winding, and first paragraph field winding 4 and compensative winding 5 embed in inner ring 3 slot for windings unshakable in one's determination, the axis of first paragraph field winding 4 and the axis of compensative winding 5 spatially orthogonal.
Outer shroud iron core 6 is provided with slot for winding, and second segment field winding 7 and output winding 8 embed in the slot for winding of outer shroud iron core 6, and the axis of second segment field winding 7 is spatially orthogonal with the axis exporting winding 8.
During non-loaded torsional interaction, spatially position is identical for the axis of first paragraph field winding 4 and the axis of second segment field winding 7, and spatially position is identical for axis and the axis exporting winding 8 of compensative winding 5.
High linearity segmentation excitation type torque sensor of the present invention implements the principle of work of torque measurement as shown in Figure 3: the two ends of first paragraph field winding 4 are respectively L
1and L
2, first paragraph field winding 4 uses L
1-L
2represent, the two ends of compensative winding 5 are respectively C
1and C
2, compensative winding 5 uses C
1-C
2represent, second segment field winding 7 two ends be respectively L
3and L
4, second segment field winding 7 uses L
1-L
2represent, export winding 8 two ends be respectively R
1and R
2, export winding 8 and use R
1-R
2represent.
First paragraph field winding L
1-L
2with second segment field winding L
3-L
4pass into alternating current U
fafter, produce pulsating magnetic flux Φ respectively
1with pulsating magnetic flux Φ
2, form closed magnetic circuit via inner ring iron core 3, air-gap and outer shroud unshakable in one's determination 6.When sensor axis is not by load torque effect, the sectional view of sensor and corresponding circuit interconnect pattern as shown in Fig. 3 (a), pulsating magnetic flux Φ
1with pulsating magnetic flux Φ
2all with output winding R
1-R
2, compensative winding C
1-C
2without linkage, export winding R
1-R
2the induction electromotive force e produced
o=0, compensative winding C
1-C
2the induction electromotive force e produced
cmagnetic flux Φ in=0, Fig. 3 (a) is pulsating magnetic flux Φ
1with pulsating magnetic flux Φ
2resultant flux.
When sensor axis is subject to load torque effect, the sectional view of sensor and corresponding circuit interconnect pattern, as shown in Fig. 3 (b), export winding R
1-R
2initial position in relative Fig. 3 (a) produces corresponding angular displacement counterclockwise, and this angular displacement and added load torque exist one-to-one relationship, exports winding R
1-R
2axis and first paragraph field winding L
1-L
2the angle of axis is 90-θ, then export winding R
1-R
2the induction electromotive force e produced
o≠ 0.In addition, second segment field winding L
3-L
4turn over θ angle equally counterclockwise, then second segment field winding L
3-L
4the pulsating magnetic flux Φ produced
2there is quadrature axis component, due to compensative winding C
1-C
2direct short circuit, and compensative winding C
1-C
2impedance very little, according to Lenz law, compensative winding C
1-C
2the magnetic flux that induction current produces substantially can by second segment field winding L
3-L
4the pulsating magnetic flux Φ produced
2quadrature axis component offset, therefore, magnetic flux during working sensor can be similar to thinks to only have d-axis magnetic flux Φ.
According to the law of electromagnetic induction, d-axis pulsating magnetic flux Φ is at first paragraph field winding L
1-L
2the effective value E of the induction electromotive force of middle generation
lfor:
E
L＝4.44fW
fΦ(1)
In formula, f is alternating voltage U
ffrequency, W
ffor first paragraph field winding L
1-L
2the number of turn.
In like manner, d-axis pulsating magnetic flux Φ is at second segment field winding L
3-L
4the effective value E of middle generation induction electromotive force
mfor:
E
m＝4.44fW
mΦcosθ＝kE
Lcosθ(2)
W in formula
mfor second segment field winding L
3-L
4the number of turn, k=W
f/ W
mfor first paragraph field winding L
1-L
2the number of turn and second segment field winding L
3-L
4the ratio of the number of turn.
If the number of turn exporting winding is all W
m, d-axis pulsating magnetic flux Φ is at output winding R
1-R
2the effective value E of middle generation induction electromotive force
ofor:
E
o＝4.44fW
mΦcos(90-θ)＝kE
Lsinθ(3)
Due to first paragraph field winding L
1-L
2with second segment field winding L
3-L
4series connection, if ignore the impedance of two sections of field windings, has according to Kirchhoff's second law:
U
f＝E
L+E
m＝E
L(1+kcosθ)(4)
Simultaneous formula (3) and formula (4) can obtain:
From formula (5), export winding R
1-R
2the effective value E of the induction electromotive force produced
ocertain corresponding relation is there is, i.e. E with the angular displacement that load torque produces
ocertain corresponding relation is there is with load torque.
The output characteristics of sensor is preferably linear, and namely ideal output characteristic is:
The angular displacement that load torque produces will in the elastic range of sensor axis, and the number of degrees are less, and the angular displacement of now load torque and generation is linear relationship.Will in order to reach the requirement of formula (6), through deduce mathematical, first paragraph field winding L
1-L
2the number of turn with export winding R
1-R
2the number of turn between ratio k=W
f/ W
mbetween 0.56-0.59, work as k=W
f/ W
mwhen=0.57, the maximum nonlinearity erron that torque sensor calibrating obtains is about 0.26%, can meet the requirement of torque measurement in Practical Project.
Compensative winding 5C in torque sensor Fig. 2 of the present invention
1-C
2principle of work as shown in Figure 4: when sensor axis 1 is subject to load torque effect, second segment field winding L
3-L
4with output winding R
1-R
2turn over angle θ relative to initial position simultaneously, suppose first paragraph field winding L
1-L
2with second segment field winding L
3-L
4certain moment exciting curent as shown in Figure 4, electric current is that left end flows to, right-hand member flow out, then second segment field winding L
3-L
4the pulsating magnetic flux Φ produced
2there is quadrature axis component Φ
sq, according to Lenz law, compensative winding C
1-C
2in can produce induction current as shown in Figure 4, this induction current produces magnetic flux Φ
c, for offsetting second segment field winding L
3-L
4the pulsating magnetic flux Φ produced
2quadrature axis component Φ
sq, thus magnetic flux when ensureing working sensor only has d-axis magnetic flux Φ substantially.
Claims (7)
1. a high linearity segmentation excitation type torque sensor, mainly comprises sensor axis, inner ring iron core, first paragraph field winding, compensative winding, outer shroud iron core, exports winding and second segment field winding, it is characterized in that:
The first paragraph field winding embedded in inner ring iron core is that series system is connected with the second segment field winding embedded in outer shroud iron core, passes into sinusoidal voltage during work;
The number of turn embedding the second segment field winding in outer shroud iron core is identical with the number of turn exporting winding;
The ratio embedded between the number of turn of the first paragraph field winding in inner ring iron core and the number of turn embedding the output winding in outer shroud iron core is between 0.56-0.59.
2. torque sensor according to claim 1, is characterized in that: inner ring left end unshakable in one's determination and sensor rotating shaft are fixed, and right-hand member to be contacted with sensor axis by bearing and can rotate by relative sensors axle.
3. torque sensor according to claim 1, is characterized in that: outer shroud right-hand member unshakable in one's determination and sensor axis are fixed, and left end contacts by bearing and inner ring are unshakable in one's determination and can rotate relative to inner ring iron core.
4. torque sensor according to claim 1, it is characterized in that: inner ring iron core is provided with slot for winding, first paragraph field winding and compensative winding embed in inner ring slot for winding unshakable in one's determination, and the axis of the axis of first paragraph field winding and compensative winding is spatially orthogonal.
5. torque sensor according to claim 1, it is characterized in that: outer shroud iron core is provided with slot for winding, second segment field winding and output winding embed in outer shroud slot for winding unshakable in one's determination, and the axis of second segment field winding is spatially orthogonal with the axis exporting winding.
6. torque sensor according to claim 1, it is characterized in that: during non-loaded torsional interaction, spatially position is identical for the axis of first paragraph field winding and the axis of second segment field winding, and spatially position is identical for axis and the axis exporting winding of compensative winding.
7. torque sensor according to claim 1, is characterized in that: the direct short circuit of two ends extension line embedding the compensative winding in inner ring iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258858.8A CN104034463B (en) | 2014-06-04 | 2014-06-04 | A kind of high linearity segmentation excitation type torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258858.8A CN104034463B (en) | 2014-06-04 | 2014-06-04 | A kind of high linearity segmentation excitation type torque sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104034463A CN104034463A (en) | 2014-09-10 |
| CN104034463B true CN104034463B (en) | 2016-03-23 |
Family
ID=51465321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410258858.8A Expired - Fee Related CN104034463B (en) | 2014-06-04 | 2014-06-04 | A kind of high linearity segmentation excitation type torque sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104034463B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372006B (en) * | 2015-12-11 | 2017-11-28 | 嘉兴学院 | A kind of Vibration Torque sensor calibration apparatus and scaling method |
| TWI577977B (en) * | 2016-01-11 | 2017-04-11 | Rotatech Int Corp | Magnetic torque sensing device for steering system |
| CN111278605B (en) * | 2017-10-27 | 2022-04-22 | 株式会社富士金 | Hand tool, tool bit for same, and torque sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122341A (en) * | 1983-12-07 | 1985-06-29 | Shibaura Eng Works Co Ltd | Washer type magnetic sensor |
| DE4229554A1 (en) * | 1992-09-04 | 1994-03-10 | Friedhelm Prof Dr Ing Milde | Shaft torque measurement for three=phase AC asynchronous induction electric motor - using terminal voltages and currents, stator winding resistance, pole-pair number, and analog computation using double integrator |
| CN101252306A (en) * | 2008-01-11 | 2008-08-27 | 东南大学 | Mixing exciter panel type eddy flow drive speed regulating device |
| CN103308226A (en) * | 2012-03-16 | 2013-09-18 | 株式会社捷太格特 | Stator of torque sensor |
| CN103968984A (en) * | 2014-05-13 | 2014-08-06 | 嘉兴学院 | Self-compensating brushless differential type torque sensor |
-
2014
- 2014-06-04 CN CN201410258858.8A patent/CN104034463B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122341A (en) * | 1983-12-07 | 1985-06-29 | Shibaura Eng Works Co Ltd | Washer type magnetic sensor |
| DE4229554A1 (en) * | 1992-09-04 | 1994-03-10 | Friedhelm Prof Dr Ing Milde | Shaft torque measurement for three=phase AC asynchronous induction electric motor - using terminal voltages and currents, stator winding resistance, pole-pair number, and analog computation using double integrator |
| CN101252306A (en) * | 2008-01-11 | 2008-08-27 | 东南大学 | Mixing exciter panel type eddy flow drive speed regulating device |
| CN103308226A (en) * | 2012-03-16 | 2013-09-18 | 株式会社捷太格特 | Stator of torque sensor |
| CN103968984A (en) * | 2014-05-13 | 2014-08-06 | 嘉兴学院 | Self-compensating brushless differential type torque sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104034463A (en) | 2014-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101598573B (en) | Direct shaft power measurements for rotating machinery | |
| Meydan | Application of amorphous materials to sensors | |
| SE462873B (en) | DEVICE FOR CONTACT-FREE INDIRECT ELECTRICAL SEATING OF TORQUE IN AN AXLE | |
| CN101331563A (en) | Sensor | |
| CN104034463B (en) | A kind of high linearity segmentation excitation type torque sensor | |
| EP0829001A1 (en) | Circularly magnetized non-contact torque and power sensor and method for measuring torque and power using same | |
| US20200158538A1 (en) | Device, arrangement and method for characterising the torsion, rotation and/or positioning of a shaft | |
| EP2853861B1 (en) | Position detection device | |
| CN202600121U (en) | Device for obtaining hysteresis loop of dc biasing of transformer iron-core material | |
| CN103760504B (en) | A kind of optical fiber Bragg raster space magnetic field intensity sensor based on giant magnetostrictive material and using method thereof | |
| CN103439034B (en) | Multifunctional force cell sensor | |
| JPS6228413B2 (en) | ||
| CN210774488U (en) | Signal compensation circuit of magnetoelastic sensor | |
| CN107202966A (en) | The measuring method and system of a kind of alternate stray field of Transformer Winding | |
| CN202351418U (en) | Mini magnetic field measurement device based on magnetoresistive effect and magnetic field superposition | |
| CN103968984A (en) | Self-compensating brushless differential type torque sensor | |
| CN1030642A (en) | Magnetically elastic torque sensor | |
| CN203837853U (en) | Self-compensation brushless differential-type torque sensor | |
| CN204043830U (en) | Based on the induction phase shift torch measuring system of FPGA | |
| CN201021907Y (en) | Torque measurement device for valve executor | |
| CN203949748U (en) | A kind of high linearity segmentation excitation type torque sensor | |
| CN106441432B (en) | A kind of self-powered rotational parameters measurement sensor | |
| CN104122020B (en) | Sensing phase shift torch measuring system based on FPGA | |
| CN203323933U (en) | Brushless torque sensor based on Hall effect | |
| CN101872006A (en) | Periodic non-sinusoidal wave reference of electronic voltage transformer with voltage booster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160204 Address after: 314001 Yuexiu South Road, Zhejiang, No. 56 Jiaxing University, Applicant after: Jiaxing University Address before: 314001 Yuexiu South Road, Zhejiang, No. 56 Jiaxing University, Applicant before: Jiaxing University Applicant before: Zhao Hao |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20170604 |