CN105157917A - Bi-moment coil reciprocal difference elimination moment calibration method and device - Google Patents
Bi-moment coil reciprocal difference elimination moment calibration method and device Download PDFInfo
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- CN105157917A CN105157917A CN201510531503.6A CN201510531503A CN105157917A CN 105157917 A CN105157917 A CN 105157917A CN 201510531503 A CN201510531503 A CN 201510531503A CN 105157917 A CN105157917 A CN 105157917A
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Abstract
The invention provides a bi-moment coil reciprocal difference elimination moment calibration method and device. In a lever system, a lever crossbeam is arranged above a lever pivot, and the two ends of the lever crossbeam are respectively connected with moment devices which are identical in structure, i.e. a first moment device and a second moment device; the lever crossbeam deflects after being affected by unbalanced moment, and then an electrified coil insulating supporting frame drives an electrified coil to move upwardly and downwardly along a first magnetic conductor in the first moment device and the second moment device; and the position of the electrified coil changes. Difference of the effect of magnetic induction intensity applied to an electromagnetic compensation moment coil in different spatial azimuths can be eliminated via a brand-new mechanical model with the reciprocal difference elimination characteristic so that an objective of enhancing measurement system linearity can be achieved. System linearity substantially changes before and after adopting bi-moment coil reciprocal difference elimination.
Description
Technical field
The invention belongs to mechanics field of measuring techniques, it is applied to lever torgue measurement/calibration instrument, is specifically related to the reciprocity of a kind of bimoment coil and disappears poor moment calibration steps and device.
Background technology
When carrying out moment calibration, mechanical lever introduces electromagnetic force, and adopt this electromagnetic force as the compensating torque of unbalanced moments suffered by system, due to lever system can be adjusted to indifferent equilibrium state, therefore greatly can improve the sensitivity of lever system, again owing to having introduced electromagnetic compensation moment, therefore the stability of lever system also meets the demands.
The torque calibrating device studied, calibration range is 1mgcm ~ 50gcm, the ratio of the bound of its measuring system reaches 50000:1, its maximum technological challenge keeps the linearity in gamut, and the linearity of moment calibration is defined as the least square fitting curve of multiple spot calibration result and the ratio of the maximal value of the difference of corresponding theory value with full scale theoretical value.
Summary of the invention
The invention provides the reciprocity of a kind of bimoment coil to disappear poor moment calibration steps and device, it to be disappeared the mechanical model of poor characteristic by a kind of inequality that has completely newly, eliminate the difference of the effect of electromagnetic compensation torquer coil magnetic induction density suffered in different spaces orientation, reach and improve the linear object of measuring system.
Realize the technical scheme of the object of the invention: the reciprocity of a kind of bimoment coil disappears poor moment calibration steps, it is in lever system, and lever is bascule, is lever crossbeam above balance pivot, the lever crossbeam two ends torquer that syndeton is identical respectively, i.e. torquer one and torquer two;
Described torquer comprises the magnetic conductor two of tubular, arranges the permanent magnet of column at magnetic conductor two inside center place, fixed magnetizer one above permanent magnet; Arrange hot-wire coil insulating carriage between magnetic conductor two and permanent magnet, magnetic conductor one, hot-wire coil is wrapped in hot-wire coil insulating carriage bottom; Hot-wire coil insulating carriage is fixed on lever crossbeam one end, can move up and down along permanent magnet, magnetic conductor one; Hot-wire coil connects the hot-wire coil wire extended;
During electromagnetic torque work, it is stressed presses formulae discovery:
f＝B×I×L(1)
In formula:
Stressed in magnetic field of f---hot-wire coil, N;
B---magnetic induction density, T;
I---the electric current in hot-wire coil, A;
L---hot-wire coil length, m;
In moment test process, should determine B, L is constant, then I and f is directly proportional, and obtains f by measuring I; For eliminating the subtle change of B in measuring process, have employed the above-mentioned lever system with 2 torquers;
In the lever system course of work, after being subject to unbalanced moments, lever crossbeam deflects, and now, in torquer one and torquer two, hot-wire coil insulating carriage drives hot-wire coil to move up and down along magnetic conductor one; The position of hot-wire coil changes;
Setting is before lever crossbeam deflects, and the distance on the hot-wire coil insulating carriage top in torquer one and torquer one top is L1, and the distance on hot-wire coil insulating carriage top in torquer two and torquer two top is also L1;
After lever crossbeam deflects, the distance on the hot-wire coil insulating carriage top in torquer one and torquer one top is L2, and the distance on the hot-wire coil insulating carriage top in torquer two and torquer two top is L3;
Wherein, when L2 diminishes than L1, then L3 must become large than L1, namely when the B of the hot-wire coil present position in torquer one diminishes, then in torquer two, the B of hot-wire coil present position becomes large, can eliminate hot-wire coil situation due to the linearly decline of f and the I that B changes with position and cause in torquer like this.
A kind of bimoment coil as above reciprocity disappears poor moment calibration steps, and the hot-wire coil described in it is copper electric coil.
A kind of bimoment coil as above reciprocity disappears poor moment calibration steps, and the torquer one described in it and torquer two are placed in same level.
A kind of bimoment coil of the present invention reciprocity disappears poor torque calibrating device, and it is in lever system, and lever is bascule, is lever crossbeam above balance pivot, the lever crossbeam two ends torquer that syndeton is identical respectively, i.e. torquer one and torquer two; Described torquer comprises the magnetic conductor two of tubular, arranges the permanent magnet of column at magnetic conductor two inside center place, fixed magnetizer one above permanent magnet; Arrange hot-wire coil insulating carriage between magnetic conductor two and permanent magnet, magnetic conductor one, hot-wire coil is wrapped in hot-wire coil insulating carriage bottom; Hot-wire coil insulating carriage is fixed on lever crossbeam one end, can move up and down along permanent magnet, magnetic conductor one; Hot-wire coil connects the hot-wire coil wire extended.
A kind of bimoment coil as above reciprocity disappears poor torque calibrating device, and the hot-wire coil described in it is copper electric coil.
A kind of bimoment coil as above reciprocity disappears poor torque calibrating device, and the torquer one described in it and torquer two are placed in same level.
Effect of the present invention is: the present invention is directed to existing structure Problems existing, for the purpose of the difference eliminating the effect of electromagnetic compensation torquer coil magnetic induction density suffered in different spaces orientation.Bimoment coil of the present invention reciprocity disappears poor moment calibration steps and device, and it adopts the reciprocity of bimoment coil to disappear before and after difference, and system linearity generation marked change, adopts the linear result of least square fitting and the difference of its theoretical value to be respectively 3 × 10
-6nm and 4 × 10
-7nm.
Accompanying drawing explanation
Fig. 1 is that a kind of bimoment coil of the present invention reciprocity disappears poor torque calibrating device schematic diagram.
Fig. 2 is torquer one (torquer two) structural representation;
In figure: 1. hot-wire coil wire; 2 hot-wire coil insulating carriages; 3 magnetic conductors one; 4 hot-wire coils; 5 permanent magnets; 6 magnetic conductors two; 7. torquer one; 8. lever crossbeam; 9. balance pivot; 10. torquer two.
Embodiment
Below in conjunction with the drawings and specific embodiments, disappear poor moment calibration steps and device of a kind of bimoment coil of the present invention reciprocity is further described.
Embodiment 1
For the purpose of the difference eliminating the effect of electromagnetic compensation torquer coil magnetic induction density suffered in different spaces orientation, propose the present invention, to the effect that set up and there is reciprocity to disappear the bimoment coil of poor characteristic.
As shown in Figure 1, a kind of bimoment coil of the present invention reciprocity disappears poor moment calibration steps, and it is in lever system, lever is bascule, be lever crossbeam 8 above balance pivot 9, the lever crossbeam 8 two ends torquer that syndeton is identical respectively, i.e. torquer 1 and torquer 2 10.Described torquer 1 and torquer 2 10 are placed in same level.
As shown in Figure 2, described torquer comprises the magnetic conductor 26 of tubular, arranges the permanent magnet 5 of column at magnetic conductor 26 inside center place, fixed magnetizer 1 above permanent magnet 5; Arrange hot-wire coil insulating carriage 2 between magnetic conductor 26 and permanent magnet 5, magnetic conductor 1, hot-wire coil 4 is wrapped in hot-wire coil insulating carriage 2 bottom; Hot-wire coil insulating carriage 2 is fixed on lever crossbeam 8 one end, can move up and down along permanent magnet 5, magnetic conductor 1; Hot-wire coil 4 connects the hot-wire coil wire 1 extended.Hot-wire coil 4 is copper electric coil.
During electromagnetic torque work, its stressed formula (1) of pressing calculates:
f＝B×I×L(1)
In formula:
Stressed in magnetic field of f---hot-wire coil, N;
B---magnetic induction density, T;
I---the electric current in hot-wire coil, A;
L---hot-wire coil length, m;
In moment test process, should determine B, L is constant, then I and f is directly proportional, and obtains f by measuring I; For eliminating the subtle change of B in measuring process, have employed the above-mentioned lever system with 2 torquers 7 and 10;
In the lever system course of work, after being subject to unbalanced moments, lever crossbeam 8 deflects, and now, in torquer 1 and torquer 2 10, hot-wire coil insulating carriage 2 drives hot-wire coil 4 to move up and down along magnetic conductor 1; The position of hot-wire coil 4 changes;
Setting is before lever crossbeam 8 deflects, and the distance on the hot-wire coil insulating carriage top in torquer 1 and torquer 1 top is L1, and the distance on hot-wire coil insulating carriage top in torquer 2 10 and torquer 2 10 top is also L1;
After lever crossbeam 8 deflects, the distance on the hot-wire coil insulating carriage top in torquer 1 and torquer 1 top is L2, and the distance on the hot-wire coil insulating carriage top in torquer 2 10 and torquer 2 10 top is L3;
Wherein, when L2 diminishes than L1, then L3 must become large than L1, namely when the B of the hot-wire coil present position in torquer 1 diminishes, then in torquer 2 10, the B of hot-wire coil present position becomes large, can eliminate hot-wire coil situation due to the linearly decline of f and the I that B changes with position and cause in torquer like this.
Embodiment 2
As shown in Figure 1, a kind of bimoment coil of the present invention reciprocity disappears poor torque calibrating device, and it is in lever system, lever is bascule, be lever crossbeam 8 above balance pivot 9, the lever crossbeam 8 two ends torquer that syndeton is identical respectively, i.e. torquer 1 and torquer 2 10.Torquer 1 and torquer 2 10 are placed in same level.
As shown in Figure 2, described torquer comprises the magnetic conductor 26 of tubular, arranges the permanent magnet 5 of column at magnetic conductor 26 inside center place, fixed magnetizer 1 above permanent magnet 5; Arrange hot-wire coil insulating carriage 2 between magnetic conductor 26 and permanent magnet 5, magnetic conductor 1, hot-wire coil 4 is wrapped in hot-wire coil insulating carriage 2 bottom; Hot-wire coil insulating carriage 2 is fixed on lever crossbeam 8 one end, can move up and down along permanent magnet 5, magnetic conductor 1; Hot-wire coil 4 connects the hot-wire coil wire 1 extended.Hot-wire coil 4 is copper electric coil.
Claims (6)
1. the reciprocity of bimoment coil disappears a poor moment calibration steps, it is characterized in that:
In lever system, lever is bascule, balance pivot (9) top is lever crossbeam (8), lever crossbeam (8) the two ends torquer that syndeton is identical respectively, i.e. torquer one (7) and torquer two (10);
Described torquer comprises the magnetic conductor two (6) of tubular, arranges the permanent magnet (5) of column at magnetic conductor two (6) inside center place, at permanent magnet (5) top fixed magnetizer one (3); Arrange hot-wire coil insulating carriage (2) between magnetic conductor two (6) and permanent magnet (5), magnetic conductor one (3), hot-wire coil (4) is wrapped in hot-wire coil insulating carriage (2) bottom; Hot-wire coil insulating carriage (2) is fixed on lever crossbeam (8) one end, can move up and down along permanent magnet (5), magnetic conductor one (3); Hot-wire coil (4) connects the hot-wire coil wire (1) extended;
During electromagnetic torque work, its stressed formula (1) of pressing calculates:
f＝B×I×L(1)
In formula:
Stressed in magnetic field of f---hot-wire coil, N;
B---magnetic induction density, T;
I---the electric current in hot-wire coil, A;
L---hot-wire coil length, m;
In moment test process, should determine B, L is constant, then I and f is directly proportional, and obtains f by measuring I; For eliminating the subtle change of B in measuring process, have employed the above-mentioned lever system with 2 torquers (7 and 10);
In the lever system course of work, after being subject to unbalanced moments, lever crossbeam (8) deflects, now, in torquer one (7) and torquer two (10), hot-wire coil insulating carriage (2) drives hot-wire coil (4) to move up and down along magnetic conductor one (3); The position of hot-wire coil (4) changes;
Before setting lever crossbeam (8) deflects, the distance on the hot-wire coil insulating carriage top in torquer one (7) and torquer one (7) top is L1, and the distance on hot-wire coil insulating carriage top in torquer two (10) and torquer two (10) top is also L1;
After lever crossbeam (8) deflects, the distance on the hot-wire coil insulating carriage top in torquer one (7) and torquer one (7) top is L2, and the distance on the hot-wire coil insulating carriage top in torquer two (10) and torquer two (10) top is L3;
Wherein, when L2 diminishes than L1, then L3 must become large than L1, namely when the B of the hot-wire coil present position in torquer one (7) diminishes, then the B of the interior hot-wire coil present position of torquer two (10) becomes large, can eliminate hot-wire coil situation due to the linearly decline of f and the I that B changes with position and cause in torquer like this.
2. a kind of bimoment coil according to claim 1 reciprocity disappears poor moment calibration steps, it is characterized in that: described hot-wire coil (4) is copper electric coil.
3. a kind of bimoment coil according to claim 1 reciprocity disappears poor moment calibration steps, it is characterized in that: described torquer one (7) and torquer two (10) are placed in same level.
4. the reciprocity of bimoment coil disappears a poor torque calibrating device, it is characterized in that:
In lever system, lever is bascule, balance pivot (9) top is lever crossbeam (8), lever crossbeam (8) the two ends torquer that syndeton is identical respectively, i.e. torquer one (7) and torquer two (10);
Described torquer comprises the magnetic conductor two (6) of tubular, arranges the permanent magnet (5) of column at magnetic conductor two (6) inside center place, at permanent magnet (5) top fixed magnetizer one (3); Arrange hot-wire coil insulating carriage (2) between magnetic conductor two (6) and permanent magnet (5), magnetic conductor one (3), hot-wire coil (4) is wrapped in hot-wire coil insulating carriage (2) bottom; Hot-wire coil insulating carriage (2) is fixed on lever crossbeam (8) one end, can move up and down along permanent magnet (5), magnetic conductor one (3); Hot-wire coil (4) connects the hot-wire coil wire (1) extended.
5. a kind of bimoment coil according to claim 4 reciprocity disappears poor torque calibrating device, it is characterized in that: described hot-wire coil (4) is copper electric coil.
6. a kind of bimoment coil according to claim 4 reciprocity disappears poor torque calibrating device, it is characterized in that: described torquer one (7) and torquer two (10) are placed in same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510531503.6A CN105157917B (en) | 2015-08-26 | 2015-08-26 | Bimoment coil reciprocity disappears poor torque calibration method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510531503.6A CN105157917B (en) | 2015-08-26 | 2015-08-26 | Bimoment coil reciprocity disappears poor torque calibration method and device |
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| Publication Number | Publication Date |
|---|---|
| CN105157917A true CN105157917A (en) | 2015-12-16 |
| CN105157917B CN105157917B (en) | 2017-08-18 |
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|---|---|---|---|
| CN201510531503.6A Active CN105157917B (en) | 2015-08-26 | 2015-08-26 | Bimoment coil reciprocity disappears poor torque calibration method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016109744A1 (en) * | 2016-05-26 | 2017-11-30 | Sartorius Lab Instruments Gmbh & Co. Kg | Comparator balance and method of operation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924505Y (en) * | 2006-04-28 | 2007-07-18 | 陕西省计量科学研究院 | Vertical shaft micro torque calibrating device |
| CN102435390A (en) * | 2011-10-24 | 2012-05-02 | 北京航天计量测试技术研究所 | Constant-moment structure for balance micro moment calibrator |
| CN202928740U (en) * | 2012-11-14 | 2013-05-08 | 中国广东核电集团有限公司 | Calibrating device of nuclear power station electrically operated valve moment testboard |
| CN103528752A (en) * | 2013-10-17 | 2014-01-22 | 中国测试技术研究院力学研究所 | Force and moment lever and force and torque standard device |
-
2015
- 2015-08-26 CN CN201510531503.6A patent/CN105157917B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924505Y (en) * | 2006-04-28 | 2007-07-18 | 陕西省计量科学研究院 | Vertical shaft micro torque calibrating device |
| CN102435390A (en) * | 2011-10-24 | 2012-05-02 | 北京航天计量测试技术研究所 | Constant-moment structure for balance micro moment calibrator |
| CN202928740U (en) * | 2012-11-14 | 2013-05-08 | 中国广东核电集团有限公司 | Calibrating device of nuclear power station electrically operated valve moment testboard |
| CN103528752A (en) * | 2013-10-17 | 2014-01-22 | 中国测试技术研究院力学研究所 | Force and moment lever and force and torque standard device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016109744A1 (en) * | 2016-05-26 | 2017-11-30 | Sartorius Lab Instruments Gmbh & Co. Kg | Comparator balance and method of operation |
| DE102016109744B4 (en) * | 2016-05-26 | 2018-11-08 | Sartorius Lab Instruments Gmbh & Co. Kg | Comparator balance and method of operation |
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| Publication number | Publication date |
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| CN105157917B (en) | 2017-08-18 |
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