CN109459069B - Differential absolute type circular induction synchronizer and angle measurement method thereof - Google Patents
Differential absolute type circular induction synchronizer and angle measurement method thereof Download PDFInfo
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- CN109459069B CN109459069B CN201811538828.7A CN201811538828A CN109459069B CN 109459069 B CN109459069 B CN 109459069B CN 201811538828 A CN201811538828 A CN 201811538828A CN 109459069 B CN109459069 B CN 109459069B
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- 230000006698 induction Effects 0.000 title claims abstract description 41
- 238000000691 measurement method Methods 0.000 title description 3
- 238000004804 winding Methods 0.000 claims abstract description 112
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 3
- 239000004020 conductor Substances 0.000 claims description 32
- LKJPSUCKSLORMF-UHFFFAOYSA-N Monolinuron Chemical compound CON(C)C(=O)NC1=CC=C(Cl)C=C1 LKJPSUCKSLORMF-UHFFFAOYSA-N 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
- G01D5/2291—Linear or rotary variable differential transformers (LVDTs/RVDTs) having a single primary coil and two secondary coils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention relates to a differential absolute type circular induction synchronizer and an angle measuring method thereof, comprising a rotor and a stator, wherein the rotor is provided with inner and outer continuous windings, the stator is provided with inner and outer segmented windings respectively under the induction of the inner and outer continuous windings of the rotor, the inner continuous windings of the rotor are matched with the inner segmented windings of the stator to form an inner channel, the outer continuous windings of the rotor are matched with the outer segmented windings of the stator to form an outer channel, and the outer channel and the inner channel are different by one outer channel period. The rotating angle of the differential absolute type circular induction synchronizer can be obtained through conversion by comparing the difference value of the electrical angles of the inner channel and the outer channel. The zero position of the synchronous inductor is not affected by temperature change, and meanwhile, the frequency response value is very high, so that the level of thousands of revolutions per minute can be reached, and the original incremental synchronous inductor can only reach tens of revolutions per minute.
Description
Technical Field
The invention relates to the technical field of circular induction synchronizers.
Background
The circular induction synchronizer (also called as a planar transformer) is a novel angular displacement sensor, is realized by utilizing the principle that electromagnetic induction signals between planar windings of a stator and a rotor change along with displacement, and can realize digital display or digital control by matching with an electronic system. It is one of the key basic components of the mechatronic product. The defects of grating, magnetic grating and capacitance grating are overcome.
The existing circle induction synchronizer comprises an incremental circle induction synchronizer and an absolute circle induction synchronizer. The incremental circular induction synchronizer has only one channel, the rotor is provided with a continuous winding, the stator is provided with a sectional winding, the sectional winding is divided into a sin winding and a cos winding, the sin winding and the cos winding are distributed at intervals, when the rotor is excited, the stator outputs two signals, one is a sin signal and the other is a cos signal, and the absolute coordinates in one period can be obtained through calculation of the two signals. The incremental circular induction synchronizer is characterized in that the synchronous machine is started after power failure in an initial state, numbers outside a period are lost, but the numbers belong to absolute coordinates within one period, and the numbers cannot be lost.
The absolute type circular induction synchronizer is provided with two channels, namely a fine channel of an outer ring and a coarse channel of an inner ring, the fine channel of the outer ring is identical to the incremental type circular induction synchronizer, a continuous winding is arranged on a rotor, a segmented winding is arranged on a stator, the coarse channel of the inner ring comprises an Archimedes spiral continuous winding on the rotor and an arc segmented winding on the stator, the subdivision degree of the mechanical angle of the absolute type circular induction synchronizer is obtained by the fine channel of the outer ring, the whole division degree of the mechanical angle is obtained by the coarse channel of the inner ring, and the whole division degree and the fine division degree are absolute. For installation reasons, the sizes of inner holes of the rotor and the stator must be different, and when the temperature changes, the rotor and the stator are inconsistent in expansion and contraction, and zero positions of the coarse channel and the fine channel can be changed.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the circular induction synchronizer and the angle measuring method thereof have the advantages of strong anti-interference capability, high precision and easiness in implementation.
The technical scheme adopted for solving the technical problems is as follows: the differential absolute type circular induction synchronizer comprises a rotor and a stator, wherein the rotor is provided with inner and outer continuous windings, the stator is provided with inner and outer segmented windings respectively under the induction of the inner and outer continuous windings of the rotor, the inner continuous windings of the rotor and the inner segmented windings of the stator are matched to form an inner channel, the outer continuous windings of the rotor and the outer segmented windings of the stator are matched to form an outer channel, the winding structure forms in the inner channel and the outer channel are the same as the winding structure form in the incremental type circular induction synchronizer, and the outer channel and the inner channel differ by one outer channel period.
Further defined, the continuous winding is formed by connecting a plurality of annularly arranged effective conductors in positive and negative series with the outer end of the conductor at the inner end of the conductor, the effective conductors extend radially, and the continuous winding of the outer channel and the continuous winding of the inner channel are connected in series.
Further defined is that the lead ends of the continuous windings of the outer channel and the lead ends of the continuous windings of the inner channel are located between the outer channel and the inner channel of the rotor, wherein two opposing lead ends are connected by a series conductor and the other two lead ends are split on both sides of the series conductor.
Further defined, the sectional winding components of the inner channel and the outer channel are sin windings and cos windings, the sin windings and the cos windings are annularly arranged at intervals, the sin windings and the cos windings are formed by connecting a plurality of fan-shaped arranged effective conductors in positive and negative series connection at the inner end part of the conductor and the outer end part of the conductor, and the effective conductors extend radially.
Further defined is that the inlet and outlet wires of each segmented winding of the outer channel are located outside the outer channel of the stator and the inlet and outlet wires of each segmented winding of the inner channel are located inside the inner channel of the stator.
Further defined, the inner channel has a pole pair number n-1 and the outer channel has a pole pair number n.
Further defined, the number of poles of the outer channel is 720, the number of poles of the inner channel is 718, and the number of pole pairs of sin and cos windings of the segmented winding is 4 or 8.
Further defined, the excitation voltages, frequencies of successive windings of the inner and outer channels of the rotor are the same.
According to the angle measurement method of the differential absolute type circular induction synchronizer, the integral graduation of the mechanical angle of the differential absolute type circular induction synchronizer is obtained through comparison of the difference value conversion of the electrical angles of the inner channel and the outer channel, and the electrical angle of the outer channel is used as the fine graduation of the mechanical angle of the differential absolute type circular induction synchronizer.
The beneficial effects of the invention are as follows: the mechanical angle of the synchronous inductor beyond one period can be obtained through the difference value between the inner channel and the outer channel, and the zero position is not influenced by temperature change. Meanwhile, the frequency response value is very high, the level of thousands of revolutions per minute can be achieved, and the original incremental synchronous sensor can only achieve tens of revolutions per minute.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description;
FIG. 1 is a schematic diagram of a prior art structure of continuous windings on a rotor of an incremental circular induction synchronizer;
FIG. 2 is a schematic diagram of a segmented winding on a stator of a prior art incremental circular induction synchronizer;
FIG. 3 is a schematic partial structure of the continuous winding on the rotor of the present invention;
FIG. 4 is a schematic partial structure of a segmented winding on a stator of the present invention;
in the figure, 1, a rotor, 2, a stator, 3, a continuous winding, 4, a segmented winding, 5, an effective conductor, 6, a lead end and 7, a series conductor.
Detailed Description
As shown in fig. 1, 2 and 3, a differential absolute type circular induction synchronizer comprises a rotor 1 and a stator 2, wherein the stator 2 comprises a stator substrate, and an insulating layer and a stator winding layer are arranged on the stator substrate. The rotor 1 comprises a rotor substrate, an insulating layer and a stator winding layer are arranged on the rotor substrate, and an insulating film and a shielding aluminum foil are attached to the rotor winding layer for eliminating the influence of a coupling capacitor, and only a required inductance is left, so that high precision and high reliability are achieved.
The rotor 1 is provided with inner and outer continuous windings 3, the stator 2 is provided with inner and outer segmented windings 4 respectively under the induction of the inner and outer continuous windings 3 of the rotor 1, the inner continuous windings 3 of the rotor 1 are matched with the inner segmented windings 4 of the stator 2 to form an inner channel, the outer continuous windings 3 of the rotor 1 are matched with the outer segmented windings 4 of the stator 2 to form an outer channel, the winding structure forms in the inner channel and the outer channel are the same as the winding structure form in the incremental circular induction synchronizer, the pole pair number of the inner channel is n-1, the pole pair number of the outer channel is n, and the outer channel and the inner channel are different by one outer channel period.
For example: the number of poles of the outer channel is 720, the number of poles of the inner channel is 718, and the number of pole pairs of each sin winding and cos winding of the segment winding 4 is 4 or 8.
The continuous winding 3 is formed by connecting a plurality of annular effective conductors 5 in positive and negative series with the outer end of the conductor at the inner end of the conductor, the effective conductors 5 extend radially, and the continuous winding 3 of the outer channel and the continuous winding 3 of the inner channel are connected in series.
The lead ends 6 of the continuous winding 3 of the outer channel and the lead ends 6 of the continuous winding 3 of the inner channel are located between the outer channel and the inner channel of the rotor 1, wherein two opposite lead ends 6 are connected by a series conductor 7, and the other two lead ends 6 are arranged on both sides of the series conductor 7.
The sectional windings 4 of the inner channel and the outer channel are divided into sin windings and cos windings, the sin windings and the cos windings are annularly arranged at intervals, the sin windings and the cos windings are formed by connecting a plurality of fan-shaped arranged effective conductors 5 in positive and negative series connection with the outer end parts of the conductors at the inner end parts of the conductors, and the effective conductors 5 extend radially.
The inlet and outlet wires of each segmented winding 4 of the outer channel are located on the outer side of the outer channel of the stator 2, and the inlet and outlet wires of each segmented winding 4 of the inner channel are located on the inner side of the inner channel of the stator 2.
The excitation voltages and frequencies of the continuous windings 3 of the inner and outer channels of the rotor 1 are identical.
The working principle of the differential absolute type circular induction synchronizer is as follows:
mechanical corner Q of differential absolute type circular induction synchronizer J ＝Q JZ +Q JS ，Q JZ For mechanical angles other than one period (full indexing), Q JS Is the mechanical angle (subdivision) within one cycle.
When the excitation voltage is applied to the rotor 1, the sin winding and cos winding of the stator 2 induce voltage signals EA and EB.
Current electrical angle θ of the external channel e is outside As fine graduation of mechanical rotation angle, θ is to be obtained e is outside As long as the output voltages E of the sin winding and the cos winding of the current outer channel are measured Outside A 、E B outside Namely theta e is outside ＝acrtan(E Outside A /E B outside )，Q JS ＝θ e is outside 。
The outer channel and the inner channel differ by an outer channel period, the electrical signal changes of the inner and outer channels differ by an outer channel period in the 360 deg. range,according to the current electrical angle theta of the inner channel e is in Current electrical angle θ to the outer channel e is outside Each difference of 10 "represents the conversion rule of the rotor 1 rotating by 1 degree to obtain the integral division of the mechanical angle of the differential absolute type circular induction synchronizer.
Claims (8)
1. The utility model provides a difference absolute type circle response synchronous ware, includes rotor and stator, characterized by: the rotor is provided with continuous windings of an inner ring and an outer ring, the stator is provided with segmented windings of the inner ring and the outer ring which are respectively under the induction of the continuous windings of the inner ring and the outer ring of the rotor,
the continuous winding of the rotor inner ring is matched with the sectional winding of the stator inner ring to form an inner channel,
the continuous winding of the outer ring of the rotor is matched with the segmented winding of the outer ring of the stator to form an outer channel,
the winding structure forms in the inner channel and the outer channel are the same as the winding structure form in the incremental circular induction synchronizer,
the outer channel and the inner channel differ by one outer channel period;
the continuous winding is formed by connecting a plurality of annular effective conductors in positive and negative series connection at the inner end part of the conductor and the outer end part of the conductor, the effective conductors radially extend, and the continuous winding of the outer channel and the continuous winding of the inner channel are connected in series.
2. The differential absolute circular induction synchronizer of claim 1, wherein: the lead ends of the continuous windings of the outer channel and the lead ends of the continuous windings of the inner channel are positioned between the outer channel and the inner channel of the rotor, wherein two opposite lead ends are connected through a series conductor, and the other two lead ends are arranged on two sides of the series conductor in a row.
3. The differential absolute circular induction synchronizer of claim 1, wherein: the sectional winding components of the inner channel and the outer channel are sin windings and cos windings, the sin windings and the cos windings are annularly arranged at intervals, the sin windings and the cos windings are formed by connecting a plurality of fan-shaped arranged effective conductors in positive and negative series connection at the inner end part of the conductor and the outer end part of the conductor, and the effective conductors extend radially.
4. The differential absolute circular induction synchronizer of claim 2, wherein: the inlet and outlet wires of each segment winding of the outer channel are positioned at the outer side of the outer channel of the stator,
the inlet and outlet wires of each segmented winding of the inner channel are positioned on the inner side of the inner channel of the stator.
5. The differential absolute circular induction synchronizer of claim 1, wherein: the pole pair number of the inner channel is n-1, and the pole pair number of the outer channel is n.
6. The differential absolute circular induction synchronizer of claim 5, wherein: the number of poles of the outer channel is 720, the number of poles of the inner channel is 718, and the number of pole pairs of the sin winding and the cos winding of the segmented winding is 4 or 8.
7. The differential absolute circular induction synchronizer of claim 1, wherein: the exciting voltages and frequencies of the continuous windings of the inner channel and the outer channel of the rotor are the same.
8. A method for measuring angles of a differential absolute type circular induction synchronizer according to claim 1, characterized in that: and obtaining the whole graduation of the mechanical angle of the differential absolute type circular induction synchronizer by comparing the difference value conversion of the electrical angles of the inner channel and the outer channel, and taking the electrical angle of the outer channel as the fine graduation of the mechanical angle of the differential absolute type circular induction synchronizer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538828.7A CN109459069B (en) | 2018-12-17 | 2018-12-17 | Differential absolute type circular induction synchronizer and angle measurement method thereof |
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| CN201811538828.7A CN109459069B (en) | 2018-12-17 | 2018-12-17 | Differential absolute type circular induction synchronizer and angle measurement method thereof |
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| CN109459069A CN109459069A (en) | 2019-03-12 |
| CN109459069B true CN109459069B (en) | 2023-11-07 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1081608A (en) * | 1965-01-06 | 1967-08-31 | Gen Electric Co Ltd | Improvements in or relating to brushless synchronous electric machines |
| CN2192026Y (en) * | 1994-03-25 | 1995-03-15 | 上海水平仪厂 | Absolute zero indution synchronizer |
| DE19738839A1 (en) * | 1997-09-05 | 1999-03-11 | Hella Kg Hueck & Co | Inductive angle sensor |
| WO2001042743A1 (en) * | 1999-12-07 | 2001-06-14 | Sumtak Corporation | Variable reluctance type angle detector |
| CN201083498Y (en) * | 2007-08-03 | 2008-07-09 | 金少舫 | Cylinder type inductosyn |
| JP2008295206A (en) * | 2007-05-24 | 2008-12-04 | Tokyo Univ Of Science | Bearingless motor and bearingless motor control system |
| CN202101644U (en) * | 2011-06-13 | 2012-01-04 | 九江精达检测技术有限公司 | Round induction synchronizer capable of being produced in large batch |
| CN202126242U (en) * | 2010-12-25 | 2012-01-25 | 九江精密测试技术研究所 | Circular induction synchronizer |
| CN202547591U (en) * | 2012-03-19 | 2012-11-21 | 九江精达检测技术有限公司 | Absolute zero position type round induction synchronizer capable of being produced at high efficiency |
| CN104200973A (en) * | 2014-09-17 | 2014-12-10 | 哈尔滨工业大学 | Harmonic-wave eliminating type radial magnetic circuit multipolar rotary transformer and winding method of signal windings |
| JP2016161325A (en) * | 2015-02-27 | 2016-09-05 | 株式会社一宮電機 | Variable reluctance type resolver |
| CN209326674U (en) * | 2018-12-17 | 2019-08-30 | 焦明 | A kind of difference absolute type round induction synchrometer |
-
2018
- 2018-12-17 CN CN201811538828.7A patent/CN109459069B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1081608A (en) * | 1965-01-06 | 1967-08-31 | Gen Electric Co Ltd | Improvements in or relating to brushless synchronous electric machines |
| CN2192026Y (en) * | 1994-03-25 | 1995-03-15 | 上海水平仪厂 | Absolute zero indution synchronizer |
| DE19738839A1 (en) * | 1997-09-05 | 1999-03-11 | Hella Kg Hueck & Co | Inductive angle sensor |
| WO2001042743A1 (en) * | 1999-12-07 | 2001-06-14 | Sumtak Corporation | Variable reluctance type angle detector |
| JP2008295206A (en) * | 2007-05-24 | 2008-12-04 | Tokyo Univ Of Science | Bearingless motor and bearingless motor control system |
| CN201083498Y (en) * | 2007-08-03 | 2008-07-09 | 金少舫 | Cylinder type inductosyn |
| CN202126242U (en) * | 2010-12-25 | 2012-01-25 | 九江精密测试技术研究所 | Circular induction synchronizer |
| CN202101644U (en) * | 2011-06-13 | 2012-01-04 | 九江精达检测技术有限公司 | Round induction synchronizer capable of being produced in large batch |
| CN202547591U (en) * | 2012-03-19 | 2012-11-21 | 九江精达检测技术有限公司 | Absolute zero position type round induction synchronizer capable of being produced at high efficiency |
| CN104200973A (en) * | 2014-09-17 | 2014-12-10 | 哈尔滨工业大学 | Harmonic-wave eliminating type radial magnetic circuit multipolar rotary transformer and winding method of signal windings |
| JP2016161325A (en) * | 2015-02-27 | 2016-09-05 | 株式会社一宮電機 | Variable reluctance type resolver |
| CN209326674U (en) * | 2018-12-17 | 2019-08-30 | 焦明 | A kind of difference absolute type round induction synchrometer |
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