CN103808250A - Side-mounted precision angular displacement self-detection system - Google Patents
Side-mounted precision angular displacement self-detection system Download PDFInfo
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- CN103808250A CN103808250A CN201410067858.XA CN201410067858A CN103808250A CN 103808250 A CN103808250 A CN 103808250A CN 201410067858 A CN201410067858 A CN 201410067858A CN 103808250 A CN103808250 A CN 103808250A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
- G05B19/40931—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine concerning programming of geometry
- G05B19/40935—Selection of predetermined shapes and defining the dimensions with parameter input
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Abstract
The invention provides a system enabling a moving metal toothed body with circumferentially and mechanically halving characteristics to automatically perform precision angular displacement detection and output displacement information. The side-mounted precision angular displacement self-detection system designs a group of detection heads which comprise exciting, induction and compensation coils, arranged beside a moving metal body to be detected and work with a microprocessor system to accurately obtain motion displacement information of the moving metal body in a non-contact mode. The system is characterized in that the detection heads are additionally provided with axially-halved grooves, and a single coil is axially wound and tangentially connected in series to weaken magnetic field edge effects of the coil; tooth crests of metal winding bases of the detection heads are tangentially and axially machined into a particular arc respectively; the metal body to be detected and toothed portions of the detection heads comply with set distribution principles; the detection heads are provided with signal compensation coils with independently adjustable compensation power supplies; the metal body to be detected and the detection heads are regarded as an overall mechanical system with a sensing function, and an online or system error correction technology is used, so that the whole system can have the capability of self-detection and precision displacement information output.
Description
Technical field
The invention belongs to angular displacement precision measurement field.
Background technology
Tradition Precise Angular Displacement Sensor at some in the mechanical system under special and rugged surroundings " cannot install " or " after installation, cannot normally use " be long-standing great technical barrier.Such as ultra-large type, strong vibration, hollow, work in mechanized equipment and armament systems etc. under the rugged surroundings such as greasy dirt dust steam.
Traditional mechanical driving device, for transferring power and position, has adopted various gears and worm gear etc.Simultaneously in order to guarantee the precision of motion, need to tested gear 1 coaxial concentric (by bearing 2, shaft coupling 3) established angle displacement transducer, as shown in Fig. 1 (a), 4 is sensor stator, 5 is rotor sensor, if this sensor adopts electromagnetic principle, often need to, at the stator of sensor and first-class point of fluting of rotor coiling 6, see Fig. 2 (b).Under some special and severe conditions, these sensors possibly cannot normally use even at all and just cannot install, for example, just there is no installation site for the center of the large gear ring of hollow.
Meanwhile, the inventor notices: (1), in detected mechanism system, has a large portion self just to have the feature of space decile, such as gear (tooth), worm gear (tooth), bearing (ball), motor (groove) etc.; (2) precision of this decile is not very high, is called " mechanical decile ", does not reach precision measurement and required " metering decile " degree of control; (3) angular displacement sensor is always divided into the rotor portion of motion and static stationary part, is connected respectively, with the motion parts of tested machinery with stationary part in the time that relative motion occurs for both, by sensor senses output displacement information; (4), in existing known sensor technology and measuring technique, what have can reach higher measuring accuracy by lower decile making precision, as time grating displacement sensor.Some employings and high-precision sensor contrast and carry out the method for error correction, also can make the sensor compensation of lower accuracy become the sensor of degree of precision.
Summary of the invention
The object of the invention is the problem existing for prior art, and the such phenomenon of the structure that has mechanical decile in tested mechanism system, a kind of side putting type precision corner displacement detection system is voluntarily proposed, tested metallic object is considered as to rotor sensor, gauge head is considered as sensor stator, be considered as an overall mechanical system with sensing function by tested metallic object and gauge head, by adopting the design of various inhibition errors to purify to original signal to electromagnetism gauge head, in conjunction with error correcting technology, make whole system possess the ability of self check and output accurate displacement information.
Basic thought of the present invention:
First the tested motion metal that possesses point conditions such as machinery is used as to the rotor portion of " large sensor ", and particular design is made one group independently other its cylindrical (noncontact, do not move) of putting of electromagnetism gauge head be used as stationary part, tentatively possess the ability of the displacement information that obtains tested machinery with this.Secondly adopt the means of various inhibition errors to purify to original signal to electromagnetism gauge head.Soft error correction technique is applied to above-mentioned tested machinery scene by the 3rd, control information intrinsic between the stator and rotor that comprise in obtained displacement information is decomposed and revised, become the high-accuracy mechanical kinematic system with self-checking function thereby enable to export angular displacement information accurately, reach the effect same with established angle displacement transducer.
In the present invention, carry " stator, rotor " and related " static, rotate " is comparatively speaking.
Technical scheme of the present invention is as follows:
A kind of side putting type precision corner displacement detection method voluntarily, it has one or more groups independent electromagnetism gauge head, independent electromagnetism gauge head is around a side relative to tooth that is distributed in metal dentate body tested relative motion mechanically and that have point features such as space mechanism, form stator, and metal dentate body forms rotor in relative rotation.
Particularly, described independent electromagnetism gauge head comprises magnetic conduction matrix and coil, and magnetic conduction matrix is a section that arc can be considered annulus, has axially grooved and tangential fluting on magnetic conduction matrix simultaneously, and the groove width of tangential fluting is less than axially grooved groove width; Described coil comprises drive coil, compensating coil and inductive coil, first coiling vertically of coil, more tangentially series connection.
The coil of described independent electromagnetism gauge head is connected with microprocessor and signal processing circuit, the built-in error correction software module of microprocessor, they are combined with tested mechanical system, jointly become and a set ofly can, from the mechanical system of line output accurate displacement information, reach the effect same with established angle displacement transducer.
Further, the tooth top of described magnetic conduction matrix respectively tangentially with axial design camber, this arc can be sine, cosine or other arcuate shape, for the error component of Inhibitory signal.
Further, the number of teeth that described electromagnetism gauge head covers the metal dentate body of tested machinery meets 2KN ± 1:2KN with the number of teeth ratio of electromagnetism gauge head independently, and wherein K is positive integer, and N is for adding the number of phases of excitation on electromagnetism gauge head;
And the facewidth of electromagnetism gauge head and groove width ratio meet following rule:
L3=L2 (1)
L4=M(L1+L2) M=1,2,3…… (2)
Wherein, L1 is the groove width of metal dentate body, and L2 is the facewidth of metal dentate body, and L3 is the facewidth of electromagnetism gauge head, and L4 is the groove width of electromagnetism gauge head, and M is positive integer.
Further, described each electromagnetism gauge head is except comprising basic magnetic conduction matrix and coil, also there is signal compensation coil, it adopts the winding method identical with drive coil on gauge head matrix, signal compensation coil provides supplementary excitation, its voltage magnitude, phase place, the equal capable of regulating of frequency content by a set of AC power that independently compensates.
Compared with traditional Angular Displacement Detecting System, the invention has the advantages that:
1. gauge head does not contact with tested machinery, and gauge head does not need motion as stationary part, is not therefore vulnerable to vibration and impacts.
2. gauge head is distributing, and compact conformation is convenient to sealing, is not therefore afraid of the exceedingly odious operating modes such as greasy dirt, dust, steam;
3. because gauge head volume is little, lightweight, the more difficult restriction that is subject to the specific conditions such as narrow space, hollow and freight weight limit, possesses the striking features that is applicable to extreme particular job condition.
4. do not need tested machinery to make any structural increase and change, cost is cheap especially.
Accompanying drawing explanation
Fig. 1 (a) is the mounting structure schematic diagram of angular displacement sensor in traditional measurement method;
Fig. 1 (b) adopts detected system architecture schematic diagram of the present invention;
Fig. 2 (a) is the cylindrical-coordinate system definition that the present invention uses;
Fig. 2 (b) is the stator and rotor loop construction schematic diagram of traditional electromagnetic sensor;
Fig. 2 (c) is the winding diagram of traditional sensor stator.
Fig. 3 (a1) is the structural representation of slotting vertically again after the tangentially decile of traditional gauge head matrix;
Fig. 3 (a2) is the structural representation that the decile vertically of the axially grooved of gauge head matrix of the present invention and increase is tangentially slotted again;
Fig. 3 (b1) is the structural representation that the tangential coiling of conventional coil winding is tangentially connected again;
Fig. 3 (b2) is the structural representation that the axial coiling of coil winding of the present invention is tangentially connected again;
Fig. 4 (a) is of the present invention tangentially with the measuring head structure schematic diagram of arc-shaped gear;
Fig. 4 (b) is of the present invention vertically with the measuring head structure schematic diagram of longitudinal cosine type tooth.
Fig. 5 is gauge head tooth distribution plan of the present invention;
Fig. 6 (a) is the schematic diagram of the stator and rotor gear ratio of single-phase excitation of the present invention;
Fig. 6 (b) is the schematic diagram that stator groove width increases a pitch on the basis of Fig. 6 (a);
Fig. 7 (a) is the schematic diagram of the stator and rotor gear ratio of two-phase excitation of the present invention;
Fig. 7 (b) stator groove width on the basis of Fig. 7 (a) increases the schematic diagram of a pitch.
Fig. 8 is the theory diagram of native system.
Embodiment
Further describe design philosophy of the present invention and concrete structure below in conjunction with accompanying drawing:
The present invention proposes a kind of metal dentate body that moves having along point features such as circumference machineries that makes and possesses the system of automatically carrying out precision corner displacement detecting and exporting its displacement information.The present invention adopts electromagnetic induction principle, make one group and include signal drive coil, induction of signal coil and signal compensation coil at interior electromagnetic induction gauge head, one or more groups this gauge head is positioned over to tested motion metallic object side, accurately obtains its moving displacement information together with microprocessor system with cordless.Excitation, induction and the processing of gauge head adopted the known electromagnetic sensor technology of part, and one of feature to be gauge head increased that decile fluting and single coil coiling vertically vertically tangentially connects to weaken coil magnetic field edge effect again; Two of feature is that the tooth top of the metal coiling matrix of gauge head tangentially and is axially processed into respectively specific arc, to reduce error and to reduce error percentage; Three of feature is to meet definite Distribution Principles between tested metal and gauge head dentate body; Four of feature is signal compensation coils that stator gauge head has independent adjustable compensation power supply; Five of feature is that tested metallic object is considered as to rotor sensor, gauge head is considered as sensor stator, be considered as an overall mechanical system with sensing function by tested metallic object and gauge head, by error correcting technology online or under system condition, make whole system possess the ability of self check and output accurate displacement information again.
The present invention directly utilizes point property such as the machinery of gear, the worm gear etc. of tested machinery, some groups of independently electromagnetic induction gauge heads 7 are installed on its side, tested like this gear 1 or worm gear etc. (being regarded as rotor sensor) just and gauge head 7(be considered as sensor stator) common formation is similar to the total system of electromagnetic induction principle sensor, be considered as " large sensor " of a broad sense, as shown in Fig. 1 (b).By the method that routine is carried out error correction to sensor, this " large sensor " carried out to error calibration and error correction again, make it to become and Fig. 1 (a) effect same can export high precision displacement information, there is the mechanical system of self-checking function, for realizing precise measurement and control object.
For realizing such scheme, the integrated innovation technology that the present invention has adopted following traditional known technology and the present invention to propose:
In the present invention, the drive coil that stator gauge head is arranged to coiling by orthogonal space passes to by the AC power of time quadrature output, and the inductive coil coexisting on stator will induce electric travelling wave signal.In the time rotating by the rotor of space decile, the phase place of stator electricity travelling wave signal moves forward and backward the difference with rotation direction.The size of phase shift is directly proportional to angular displacement, thereby reflects angular displacement information.This is known electromagnetic type displacement transducer technology.
Innovation point of the present invention is:
1, referring to Fig. 1 (b), by one or more groups independently electromagnetism gauge head 7 around the side relative to tooth of the metal dentate body with point features such as space mechanisms (being gear 1 in figure) that is distributed in relative motion, form stator, and coiling and combined method to coil on gauge head 7 carried out particular design.
Fig. 2 (a) has provided the usual definition to three coordinate directions of right cylinder, be divided into axial Y, radially X and tangential Z, and the series coil of traditional electromagnetism class electronic product (motor, sensor), no matter be stator or rotor, it is all Z coiling tangentially, embed again in the stator, rotor matrix of the fluting of decile tangentially, and tangentially series connection.
And for the gauge head coil adopting for the present invention, gauge head matrix 71 is equivalent to a torus after blocking one section, as Fig. 3 (a1), if still axially grooved by above-mentioned tangential decile to such gauge head matrix, coil 6 can only be by after tangential series connection coiling, and front and back are scrap (bridge) not, does not form sealing, the edge effect of coil magnetic field will produce serious adverse effect to signal quality like this, as Fig. 2 (c).
The present invention proposes, on the axially grooved basis of the tangential decile of traditional gauge head matrix, to increase the tangential fluting of decile vertically for this reason, and its groove width b is less than axially grooved groove width a, as shown in Fig. 3 (a2).Then the coiling direction of coil 52 by traditional tangential coiling after tangentially series connection (as Fig. 3 (b1)), change tangentially series connection again after axial coiling into, as shown in Fig. 3 (b2).All prove that by theoretical analysis, electromagnetic-field simulation and experiment effect this structure can obviously weaken the magnetic field edge effect of gauge head discrete (not sealing) coil.
More than, just to increase tangential fluting together, two coil 6 back-roll composition " 8 " font coils are example, can have more and tangentially slot for the multiple coils of coiling in practicality.
2, the present invention contains drive coil for coiling 6(, inductive coil and compensating coil) gauge head matrix be also the metal dentate body of mechanical decile, in order further to suppress the error percentage in induced signal, the tooth top of gauge head matrix is processed into sine by the present invention, cosine or other arc, and can distinguish or simultaneously along tangential and axial distribution, as Fig. 4 (a) is processed as arc-shaped gear 711 in the tangential direction of tooth top, as Fig. 4 (b) forms the cosine-shaped flank of tooth 712 at the axial direction of tooth top, this is two typical case, can certainly also have other similar designs.
3, the regularity of distribution such as the number of teeth of gauge head matrix 71 of the present invention, width and dutycycle meets principle shown in Fig. 5.
Gauge head tooth Distribution Principles:
L3=L2 (1)
L4=M(L1+L2) M=1,2,3…… (2)
Wherein, L1 is the groove width of metal dentate body, and L2 is the facewidth of metal dentate body, and L3 is the facewidth of discrete electrical magnetic survey head, and L4 is the groove width of discrete electrical magnetic survey head, and M is positive integer.
Gauge head matrix 71(is stator) and the metal dentate body 1(rotor of tested machinery) gear ratio be: 2KN:2KN ± 1, wherein K is positive integer, N is for adding the number of phases of excitation on gauge head.
On this basis, stator groove width can increase p(p >=1) width of times pitch, can derive equally multiple rotor gear ratio.
If Fig. 6 is single-phase excitation rotor gear ratio, the situation that Fig. 6 (a) is 2:3 for rotor gear ratio, Fig. 6 (b) is the situation that stator groove width increases by 1 times of pitch on the basis of Fig. 6 (a).
If Fig. 7 is two-phase excitation rotor gear ratio, the situation that Fig. 7 (a) is 4:5 for rotor gear ratio, Fig. 7 (b) is the situation that stator groove width increases by 1 times of pitch on the basis of Fig. 7 (a).
4,, due to a variety of causes, the induced signal that induction of signal coil produces under excitation power supply effect will comprise various error percentages, need to increase a signal compensation coil for this reason again, and original error percentage is offset.The feature of the signal compensation coil that the present invention increases is: be not first to adopt an annular enclosed stator coil, become several discrete gauge head coils but block, its effect is similar to said stator coil; Secondly not only increase an independently signal compensation coil, but also will increase a set of AC power that independently compensates, its voltage magnitude, phase place, the equal capable of regulating of frequency content, thus reach better compensation effect, see Fig. 8.
5, classic method by develop displacement transducer synchronize with high-precision displacement transducer (as precise grating, laser interferometer etc.) rotation compare, control information is recorded in to microprocessor and carries out error correction, thereby improve the sensor accuracy of researching and developing.The present invention is due to the tested machinery with point features such as machineries is considered as to rotor sensor, be that stator side is placed in tested machinery and the stator coil that is generally a whole circle is changed into discrete electromagnetism gauge head backsight, as shown in Fig. 1 (b), thereby be different from above-mentioned classic method, need in laboratory or sensor manufacturer factory building, not realize the error correction of sensor to sensor, but use client's processing site to realize sensor to possessing the online error correction of mechanical system (being likely very huge system) of self-checking function in system.Except directly utilizing the decile metal dentation of tested machinery external, the gear ring that also can process specially a required design depends on rotary machine, and this method is applicable equally.
The present invention is not limited to above-mentioned embodiment, if the various changes to invention or distortion do not depart from the spirit and scope of the present invention, if within these changes and distortion belong to claim of the present invention and equivalent technologies scope, the present invention is also intended to comprise these changes and distortion.
Claims (8)
1. side putting type precision corner displacement detection system voluntarily, it is characterized in that, described system has one or more groups independently electromagnetism gauge head, described electromagnetism gauge head around be distributed in tested mechanically in relative rotation, there is the side relative with tooth of the metal dentate body of point features such as space mechanism, form stator, and metal dentate body forms rotor in relative rotation;
Described electromagnetism gauge head comprises magnetic conduction matrix and coil, magnetic conduction matrix is annulus one section, magnetic conduction matrix has axially grooved and tangential fluting in the face of in the one side of metal dentate body simultaneously, and the groove width of tangentially slotting is less than axially grooved groove width; Described coil comprises drive coil and inductive coil, first coiling vertically of coil, more tangentially series connection;
The coil of described electromagnetism gauge head is connected with microprocessor and signal processing circuit, and microprocessor is built-in with error correction processing module;
Described electromagnetism gauge head, microprocessor, signal processing circuit and tested machinery relatively rotate metal dentate body common form a set of can be from the detection mechanical system voluntarily of line output accurate displacement information.
2. side putting type precision corner according to claim 1 displacement detection system voluntarily, is characterized in that, the tooth top of described magnetic conduction matrix respectively tangentially with axial design camber.
3. side putting type precision corner according to claim 2 displacement detection system voluntarily, is characterized in that, the arc of described tooth top is sine, cosine or other arcuate shape.
4. according to the side putting type precision corner displacement detection system voluntarily one of claim 1-3 Suo Shu, it is characterized in that, the number of teeth of metal dentate body and the number of teeth ratio of electromagnetism gauge head that described electromagnetism gauge head covers tested machinery meet 2KN ± 1:2KN, wherein K is positive integer, and N is for adding the number of phases of excitation on electromagnetism gauge head;
And the facewidth of electromagnetism gauge head and groove width ratio meet following rule:
L3=L2 (1)
L4=M(L1+L2) M=1,2,3…… (2)
Wherein, L1 is the groove width of metal dentate body, and L2 is the facewidth of metal dentate body, and L3 is the facewidth of electromagnetism gauge head, and L4 is the groove width of electromagnetism gauge head, and M is positive integer.
5. according to the side putting type precision corner displacement detection system voluntarily one of claim 1-3 Suo Shu, it is characterized in that, described each electromagnetism gauge head is except comprising basic magnetic conduction matrix and excitation, inductive coil, also has signal compensation coil, it adopts the winding method identical with drive coil on magnetic conduction matrix, signal compensation coil is by a set of AC power excitation that affords redress, its voltage magnitude, phase place, equal capable of regulating of frequency content of independently compensating.
6. according to the side putting type precision corner displacement detection system voluntarily one of claim 1-3 Suo Shu, it is characterized in that the other relative side of cylindrical that relatively rotates metal dentate body that is placed in of described electromagnetism gauge head.
7. according to the side putting type precision corner displacement detection system method voluntarily one of claim 1-3 Suo Shu, it is characterized in that, the metal dentate body of described tested machinery is gear, worm gear, motor, bearing etc.
8. according to the side putting type precision corner displacement detection system voluntarily one of claim 1-3 Suo Shu, it is characterized in that, described in using first, detect voluntarily before mechanical system, first to utilize high-precision angle displacement measuring device to detecting voluntarily the displacement measurement that carries out of mechanical system, measurement result is contrasted and draws the intrinsic gauging error that detects voluntarily mechanical system with the result of testing oneself that detects voluntarily mechanical system, be stored in microprocessor, compensate this intrinsic gauging error part in actual measurement or in controlling later, reach the effect of exporting accurate displacement information after error correction.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067858.XA CN103808250A (en) | 2014-02-26 | 2014-02-26 | Side-mounted precision angular displacement self-detection system |
| CN201420497791.9U CN204440117U (en) | 2014-02-26 | 2014-08-30 | A kind of side putting type precision corner displacement pick-up unit voluntarily |
| CN201410436517.5A CN104298170B (en) | 2014-02-26 | 2014-08-30 | Side putting type precision corner displacement detecting system voluntarily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067858.XA CN103808250A (en) | 2014-02-26 | 2014-02-26 | Side-mounted precision angular displacement self-detection system |
Publications (1)
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| CN103808250A true CN103808250A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410067858.XA Pending CN103808250A (en) | 2014-02-26 | 2014-02-26 | Side-mounted precision angular displacement self-detection system |
| CN201420497791.9U Withdrawn - After Issue CN204440117U (en) | 2014-02-26 | 2014-08-30 | A kind of side putting type precision corner displacement pick-up unit voluntarily |
| CN201410436517.5A Active CN104298170B (en) | 2014-02-26 | 2014-08-30 | Side putting type precision corner displacement detecting system voluntarily |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420497791.9U Withdrawn - After Issue CN204440117U (en) | 2014-02-26 | 2014-08-30 | A kind of side putting type precision corner displacement pick-up unit voluntarily |
| CN201410436517.5A Active CN104298170B (en) | 2014-02-26 | 2014-08-30 | Side putting type precision corner displacement detecting system voluntarily |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737731A (en) * | 2016-03-03 | 2016-07-06 | 安徽理工大学 | Handheld angular displacement probe |
| CN108338694A (en) * | 2017-01-25 | 2018-07-31 | 漳州灿坤实业有限公司 | Food materials measuring equipment and baking machine |
| CN108955512A (en) * | 2018-10-10 | 2018-12-07 | 重庆交通大学 | Accurate angle displacement measurement system |
| CN110640546A (en) * | 2019-09-20 | 2020-01-03 | 西安工业大学 | Measured gear rotation axis measuring method for large gear measurement beside machine |
| CN114353659A (en) * | 2022-01-06 | 2022-04-15 | 重庆理工大学 | Time grating angular displacement sensor based on single alternating electric field |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808250A (en) * | 2014-02-26 | 2014-05-21 | 重庆理工大学 | Side-mounted precision angular displacement self-detection system |
| CN105673714B (en) * | 2016-02-03 | 2018-01-23 | 重庆理工大学 | A kind of precise rotating platform bearing with absolute position detection function |
| CN106441081B (en) * | 2016-11-30 | 2022-06-24 | 重庆中电天时精密装备技术有限公司 | Time grating angular displacement sensor without rotor winding |
| US20190360843A1 (en) * | 2018-05-22 | 2019-11-28 | Chad Unterschultz | Capacitive Position Sensing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2652688B2 (en) * | 1989-01-11 | 1991-10-18 | Alsthom Gec | CONTROL FOR THE CONSTANT POWER OPERATION OF A SYNCHRONOUS MOTOR-DRIVE. |
| JP4896910B2 (en) * | 2008-03-18 | 2012-03-14 | 株式会社東芝 | Arc type angle sensor |
| CN101571371B (en) * | 2009-02-27 | 2011-01-26 | 重庆理工大学 | Coil winding and slot bisecting method used for displacement measurement sensor |
| CN102297654A (en) * | 2011-07-27 | 2011-12-28 | 重庆市阿贝科技有限公司 | Precision measurement apparatus for angular displacement |
| CN103808250A (en) * | 2014-02-26 | 2014-05-21 | 重庆理工大学 | Side-mounted precision angular displacement self-detection system |
-
2014
- 2014-02-26 CN CN201410067858.XA patent/CN103808250A/en active Pending
- 2014-08-30 CN CN201420497791.9U patent/CN204440117U/en not_active Withdrawn - After Issue
- 2014-08-30 CN CN201410436517.5A patent/CN104298170B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737731A (en) * | 2016-03-03 | 2016-07-06 | 安徽理工大学 | Handheld angular displacement probe |
| CN108338694A (en) * | 2017-01-25 | 2018-07-31 | 漳州灿坤实业有限公司 | Food materials measuring equipment and baking machine |
| CN108955512A (en) * | 2018-10-10 | 2018-12-07 | 重庆交通大学 | Accurate angle displacement measurement system |
| CN110640546A (en) * | 2019-09-20 | 2020-01-03 | 西安工业大学 | Measured gear rotation axis measuring method for large gear measurement beside machine |
| CN110640546B (en) * | 2019-09-20 | 2021-06-29 | 西安工业大学 | Measured gear rotation axis measuring method for large gear measurement beside machine |
| CN114353659A (en) * | 2022-01-06 | 2022-04-15 | 重庆理工大学 | Time grating angular displacement sensor based on single alternating electric field |
| CN114353659B (en) * | 2022-01-06 | 2023-06-09 | 重庆理工大学 | Time grating angular displacement sensor based on single alternating electric field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104298170B (en) | 2016-09-07 |
| CN104298170A (en) | 2015-01-21 |
| CN204440117U (en) | 2015-07-01 |
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Application publication date: 20140521 |