CN109556787A - A kind of rotary inertia calibrating installation and method - Google Patents
A kind of rotary inertia calibrating installation and method Download PDFInfo
- Publication number
- CN109556787A CN109556787A CN201811359199.1A CN201811359199A CN109556787A CN 109556787 A CN109556787 A CN 109556787A CN 201811359199 A CN201811359199 A CN 201811359199A CN 109556787 A CN109556787 A CN 109556787A
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- CN
- China
- Prior art keywords
- rotary inertia
- standard component
- rotary
- positioning disk
- calibrating installation
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- 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.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/10—Determining the moment of inertia
Abstract
A kind of rotary inertia calibrating installation and method, including rotary inertia standard component positioning disk, it is centre of gyration location hole that rotary inertia standard component, which positions disk center, rotary inertia standard component positions the rotation axis horizontal rotation of wound up through centre of gyration location hole, rotary inertia standard component is placed respectively in the left and right ends of rotary inertia standard component positioning disk, and has the standard component location hole for locating rotation inertia standard component on rotary inertia standard component positioning disk.
Description
Technical field
The invention belongs to calibrating installation fields, and in particular to a kind of rotary inertia calibrating installation and method.
Background technique
The measurement of inertia when rotary inertia (Moment of Inertia) is Rigid Body in Rotation With, magnitude depend on object
The position of shape, Mass Distribution and shaft.The rotary inertia of rigid body has important physical significance, in scientific experiment, engineering skill
The industrial circles such as art, space flight, electric power, machinery, instrument are also an Important Parameters.The instruction system of electromagnetic instrument, because of coil
Rotary inertia it is different, measurement Weak current (galvanometer) or electricity (ballistic galvanometer) can be respectively used to.Engine blade,
In the configuration design of flywheel, gyro and artificial satellite, rotary inertia is accurately measured, is all very necessary.
Existing rotary inertia calibration method, generallys use the fixed rigid body of mechanical outline as rotary inertia standard, outside
Shape is generally cylindrical body, and rotary inertia reference value is the calculated results.It is asked since material internal density distribution is non-uniform
Topic, the calculated results often have certain gap with true value, and the error is unknown quantity and can not ignore.According to the party
Method is calibrated, and can introduce the error leads to calibration result misalignment.
Summary of the invention
It is an object of the invention to: in place of overcome the deficiencies in the prior art, it is a kind of fixed based on rotary inertia parallel axes to provide
" the rotary inertia error amplifying method " of reason, this method can trace to the source rotary inertia reference value to length and quality, and by standard
Accuracy is increased to 0.01%, so that overcoming rotary inertia magnitude can not trace to the source, be difficult to realize the shortcomings that high accuracy measurement.
Technical scheme is as follows: a kind of rotary inertia calibrating installation, including rotary inertia standard component positioning disk, turns
Dynamic inertia standard component positioning disk center is centre of gyration location hole, and rotary inertia standard component positions the positioning of the wound up through centre of gyration
The rotation axis horizontal in hole rotates, and places rotary inertia standard component respectively in the left and right ends of rotary inertia standard component positioning disk.
There is the standard component location hole for locating rotation inertia standard component on rotary inertia standard component positioning disk
The following steps are included:
S1: in the case where not placing rotary inertia standard component, rotary inertia calibrating installation is loaded on air floating table, and is driven
Its work is moved, rotary inertia indicating value J is obtained1i；
S2: being detached from air floating table for rotary inertia calibrating installation,
S3: the step of repeating S1 to S2 three times, to obtain rotary inertia J1i, i=1,2,3, and the J taken1iMean value is denoted as
J1；
S4: rotary inertia standard component, and fixed rotary inertia are loaded in the symmetric position of rotary inertia standard component positioning disk
Standard component；
S5: rotary inertia calibrating installation is loaded on air floating table, and drives its work, obtains rotary inertia indicating value J2i；
S6: rotary inertia calibrating installation is detached from air floating table；
S7: the step of repeating S5 to S6 three times, to obtain rotary inertia J2i, i=1,2,3, and the J taken2iMean value is denoted as
J2；
S7: it calculates rotary inertia standard component and the rotary inertia value of the rotary shaft of rotary inertia standard component positioning disk center is made
For rotary inertia reference value JR；
S8: pass through JT=J2-J1, obtain test result JT；
S9: to JTWith JRThe consistency of numerical value is compared；
Rotary inertia standard component: being loaded into the different location of rotary inertia standard component positioning disk by S10, repeats S5 to S9,
Until covering whole test scopes；
Further include S11: experimental system is restored.
In the S4, rotary inertia standard component is fixed by installing positioning pin in standard component location hole.
In the S4, guarantee that the rotary inertia standard component 1 of the left and right sides is symmetrical.
In the S7, J0For 1 own rotation inertia of rotary inertia standard component.
In the S7, m0For the quality of rotary inertia standard component 1.
In the S7, l0The distance of rotary inertia standard component positioning disk centre rotational axis is arrived for rotary inertia standard component 1.
Remarkable result of the invention is:
(1) since the result of rotary inertia is directly exported by torque and angle, there is no intermediate magnitude, it can be achieved that magnitude traces back
Standard volume of the source to torque and angle.Other prior arts require intermediate magnitude (stiffness coefficient of such as torsion bar) transmitting, can not
Realize directly tracing to the source for rotary inertia magnitude.This method bring effect first is that, do not need rotary inertia standard component, Ji Keshi
The accurate measurement of existing rotary inertia.
(2) it by the rotation inerttia precision of the prior art, is improved by 0.5% to 0.05%, improves an order of magnitude；
(3) under the premise of guaranteeing precision, the ratio between high-low-range is extended to 100 times or more；
(4) test product biggish for rotary inertia, time of measuring also substantially shorten, time of measuring only with active control
Rock period correlation, and the period of rocking of active control can be fixed, and is different from existing other methods, rocks period meeting
Increase with the increase of rotary inertia, a cycle may reach 20s, and the measurement for completing 10 periods at least needs 5min left
It is right
Detailed description of the invention
Fig. 1 is rotary inertia calibrating installation schematic diagram of the present invention
Fig. 2 is rotary inertia calibrating installation top view of the present invention
Fig. 3 is rotary inertia calibrating installation rotary inertia standard component schematic diagram of the present invention
In figure: 1-rotary inertia standard component, 2-rotary inertia standard component positioning disks, 3-centre of gyration location holes, 4-
Standard component location hole
Specific embodiment
A kind of rotary inertia calibrating installation, including rotary inertia standard component positioning disk 2, rotary inertia standard component positioning disk 2
Center is centre of gyration location hole 3, and rotary inertia standard component positioning disk 2 is around the rotation axis horizontal for passing through centre of gyration location hole 3
Rotation, places rotary inertia standard component 1 in the left and right ends of rotary inertia standard component positioning disk 2, and in rotary inertia mark respectively
There is the standard component location hole 4 for locating rotation inertia standard component 1 on quasi- part positioning disk 2,
A kind of rotary inertia calibration method, comprising the following steps:
S1: in the case where not placing rotary inertia standard component 1, rotary inertia calibrating installation being loaded on air floating table, and
Its work is driven, rotary inertia indicating value J is obtained1i；
S2: being detached from air floating table for rotary inertia calibrating installation,
S3: the step of repeating S1 to S2 three times, to obtain rotary inertia J1i(i=1,2,3), and the J taken1iMean value note
For J1；
S4: rotary inertia standard component 1 is loaded in the symmetric position of rotary inertia standard component positioning disk 2, and guarantees left and right two
The rotary inertia standard component 1 of side is symmetrical, and fixes rotary inertia standard component 1 by installing positioning pin in standard component location hole 4；
S5: rotary inertia calibrating installation is loaded on air floating table, and drives its work, obtains rotary inertia indicating value J2i
S6: rotary inertia calibrating installation is detached from air floating table
S7: the step of repeating S5 to S6 three times, to obtain rotary inertia J2i(i=1,2,3), and the J taken2iMean value note
For J2；
S7: rotary inertia standard component 1 is calculated to the rotary inertia value of the rotary shaft at 2 center of rotary inertia standard component positioning disk
As rotary inertia reference value JR
J0For 1 own rotation inertia of rotary inertia standard component
m0For the quality of rotary inertia standard component 1
l0The distance of 2 centre rotational axis of rotary inertia standard component positioning disk is arrived for rotary inertia standard component 1
S8: pass through JT=J2-J1, obtain test result JT
S9: to JTWith JRThe consistency of numerical value is compared；
S10: rotary inertia standard component 1 is loaded into the different location of rotary inertia standard component positioning disk 2, repeats S5 extremely
S9, until covering whole test scopes；
S11: experimental system is restored.
Claims (9)
1. a kind of rotary inertia calibrating installation, it is characterised in that: including rotary inertia standard component positioning disk (2), rotary inertia mark
Quasi- part positioning disk (2) center is centre of gyration location hole (3), and rotary inertia standard component positioning disk (2) is around fixed across the centre of gyration
The rotation axis horizontal rotation in position hole (3), places rotary inertia mark in the left and right ends of rotary inertia standard component positioning disk (2) respectively
Quasi- part (1).
2. a kind of rotary inertia calibrating installation according to claim 1, it is characterised in that: positioned in rotary inertia standard component
There is the standard component location hole (4) for locating rotation inertia standard component (1) on disk (2).
3. a kind of calibration method for applying rotary inertia calibrating installation as described in claim 1, it is characterised in that: including following
Step:
S1: in the case where not placing rotary inertia standard component (1), rotary inertia calibrating installation is loaded on air floating table, and is driven
Its work is moved, rotary inertia indicating value J is obtained1i；
S2: being detached from air floating table for rotary inertia calibrating installation,
S3: the step of repeating S1 to S2 three times, to obtain rotary inertia J1i, i=1,2,3, and the J taken1iMean value is denoted as J1；
S4: rotary inertia standard component (1) is loaded in the symmetric position of rotary inertia standard component positioning disk (2), and fixed rotation is used
It measures standard component (1)；
S5: rotary inertia calibrating installation is loaded on air floating table, and drives its work, obtains rotary inertia indicating value J2i；
S6: rotary inertia calibrating installation is detached from air floating table；
S7: the step of repeating S5 to S6 three times, to obtain rotary inertia J2i, i=1,2,3, and the J taken2iMean value is denoted as J2；
S7: rotary inertia standard component (1) is calculated to the rotary inertia value of the rotary shaft at rotary inertia standard component positioning disk (2) center
As rotary inertia reference value JR；
S8: pass through JT=J2-J1, obtain test result JT；
S9: to JTWith JRThe consistency of numerical value is compared；
S10: rotary inertia standard component (1) is loaded into the different location of rotary inertia standard component positioning disk (2), repeats S5 extremely
S9, until covering whole test scopes.
4. a kind of rotary inertia calibration method according to claim 3, it is characterised in that: further include S11: by experimental system
It restores.
5. a kind of rotary inertia calibration method according to claim 3, it is characterised in that: in the S4, by standard
Part location hole (4) installs positioning pin to fix rotary inertia standard component 1.
6. a kind of rotary inertia calibration method according to claim 3, it is characterised in that: in the S4, guarantee left and right two
The rotary inertia standard component (1) of side is symmetrical.
7. a kind of rotary inertia calibration method according to claim 3, it is characterised in that: in the S7, J0For rotary inertia
Standard component (1) own rotation inertia.
8. a kind of rotary inertia calibration method according to claim 3, it is characterised in that: in the S7, m0For rotary inertia
The quality of standard component (1).
9. a kind of rotary inertia calibration method according to claim 3, it is characterised in that: in the S7, l0For rotary inertia
Standard component (1) arrives the distance of rotary inertia standard component positioning disk (2) centre rotational axis.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811359199.1A CN109556787A (en) | 2018-11-15 | 2018-11-15 | A kind of rotary inertia calibrating installation and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811359199.1A CN109556787A (en) | 2018-11-15 | 2018-11-15 | A kind of rotary inertia calibrating installation and method |
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| CN109556787A true CN109556787A (en) | 2019-04-02 |
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ID=65866288
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231123A (en) * | 2019-06-21 | 2019-09-13 | 华中科技大学 | A kind of method for measuring rotary inertia and system based on active vibration insulator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106881A (en) * | 1986-10-15 | 1987-03-11 | 北京工业学院 | The measuring moment of inertia of rigid bodies device and method |
| CN103292956A (en) * | 2013-06-24 | 2013-09-11 | 中国航空工业集团公司北京长城计量测试技术研究所 | Device and method for calibrating rotational inertia |
| CN106153252A (en) * | 2015-03-18 | 2016-11-23 | 北京航天计量测试技术研究所 | A kind of rotary inertia indifference amplifies calibrating installation and method |
| CN106595955A (en) * | 2016-11-16 | 2017-04-26 | 上海精密计量测试研究所 | Flight simulator rotating inertia online calibration system and calibration method thereof |
-
2018
- 2018-11-15 CN CN201811359199.1A patent/CN109556787A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106881A (en) * | 1986-10-15 | 1987-03-11 | 北京工业学院 | The measuring moment of inertia of rigid bodies device and method |
| CN103292956A (en) * | 2013-06-24 | 2013-09-11 | 中国航空工业集团公司北京长城计量测试技术研究所 | Device and method for calibrating rotational inertia |
| CN106153252A (en) * | 2015-03-18 | 2016-11-23 | 北京航天计量测试技术研究所 | A kind of rotary inertia indifference amplifies calibrating installation and method |
| CN106595955A (en) * | 2016-11-16 | 2017-04-26 | 上海精密计量测试研究所 | Flight simulator rotating inertia online calibration system and calibration method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231123A (en) * | 2019-06-21 | 2019-09-13 | 华中科技大学 | A kind of method for measuring rotary inertia and system based on active vibration insulator |
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Application publication date: 20190402 |