CN207147706U - A kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy - Google Patents
A kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy Download PDFInfo
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- CN207147706U CN207147706U CN201721008834.2U CN201721008834U CN207147706U CN 207147706 U CN207147706 U CN 207147706U CN 201721008834 U CN201721008834 U CN 201721008834U CN 207147706 U CN207147706 U CN 207147706U
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- damper
- quartz flexible
- dynamic balance
- flexible accelerometer
- electrokinetic transducer
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Abstract
The utility model belongs to the dynamic balancing assessment technique of quartz flexible accelerometer, discloses a kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy, and the evaluating apparatus is provided with levelling bench；Left damper is provided with the left of levelling bench, is supported on the upside of left damper and left electrokinetic transducer is installed；Right damper is provided with the right side of levelling bench, is supported on the upside of right damper and right electrokinetic transducer is installed；Rotor frock is fixed between left and right electrokinetic transducer；Rotor frock center is clamped with quartz flexible accelerometer；Left electrokinetic transducer, right electrokinetic transducer electrically connect with computer testing evaluation system.After computer testing evaluation system self study of the present utility model, the vibration data of accumulation several times, empirical value and the storage of vibration area are extracted；Judge whether it meets system requirements；Ensure quartz flexible accelerometer dynamic balance accuracy evaluation index quantification, and then efficiency is checked and accepted in specification acceptance criteria and raising.
Description
Technical field
The utility model belongs to the dynamic balancing assessment technique of quartz flexible accelerometer, more particularly to a kind of quartz flexible adds
The evaluating apparatus of speedometer dynamic balance accuracy.
Background technology
At present, quartz flexible accelerometer is used for the linear acceleration for measuring body, is the critical component of guided missile.High speed rotor
It is the core devices of quartz flexible accelerometer, gimbals is maintained in inertial space by gyroscopic inertia during high speed rotation
Stability.Because rotor is in high speed rotation state when quartz flexible accelerometer works, due to the quality point relative to axis
Cloth is uneven and produces centrifugal force, and this uneven centrifugal action can cause vibration on rotor bearing, produces noise and adds
Fast bearing wear, have a strong impact on performance and the life-span of product.Therefore it is true to eliminate its quality lack of uniformity by dynamic balancing technique
Protect the fundamental means of its service behaviour.
Rotor has structural volume small (diameter is less than 12mm), light weight (being less than 20 grams) at present, (rotating speed is higher than rotating speed height
80000r/min) the characteristics of, and dynamic balance accuracy requirement of the system to rotor is also higher (eccentric throw is less than 0.3 μm), it is difficult to
Directly using standard high accuracy dynamic balancing equipment on the market (dynamic balancing quality must be more than 50 grams).Therefore, rotor at present
Dynamic balance accuracy also relies on the feel of technician：The rotor of rotation is arranged in hand-held frock at a high speed, vibrates journey by feel frock
Spend to evaluate the dynamic balance accuracy of rotor.This method has the disadvantage that：
(1) big to people's degree of dependence, the feel of different people differs greatly, and product dynamic balance accuracy spreads larger；
(2) it is unfavorable for forming unified criterion, is unfavorable for producing in enormous quantities.
In summary, the problem of prior art is present be：Because current rotor dynamic balancing evaluation criterion is inconsistent, product matter
Amount distribution is larger, causes product rotor dynamic balancing effect not ideal, directly increases the scattered band of particular product performance parameters, shadow
Product qualification rate is rung.
The content of the invention
The problem of existing for prior art, the utility model provide a kind of quartz flexible accelerometer dynamic balance accuracy
Evaluating apparatus.The evaluating apparatus is designed with left electrokinetic transducer, right electrokinetic transducer is arranged on levelling bench, will can turn
The vibration signal of son is converted to standard voltage signal, there is provided the vibration plane of one section of duration is calculated to computer testing evaluation system
Product；Under system " self study " pattern, after the self study of computer testing evaluation system, the vibration data of accumulation several times, extraction
Go out to vibrate the empirical value of area and storage；Under system " dynamic balance accuracy evaluation " pattern, the empirical value of system storage is to working as
Preceding rotor dynamic balancing precision is evaluated, and judges whether it meets system requirements.Ensure quartz flexible accelerometer dynamic balancing
Precision evaluation indices quantification, and then efficiency is checked and accepted in specification acceptance criteria and raising.
A kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy, the quartz flexible accelerometer dynamic balancing essence
Support has been bolted left electrokinetic transducer on the upside of the left damper of the evaluating apparatus of degree；
Support has been bolted right electrokinetic transducer on the upside of right damper；
The left electrokinetic transducer, right electrokinetic transducer are electrically connected with computer testing evaluation system by wire.
Further, the levelling bench of the evaluating apparatus of described quartz flexible accelerometer dynamic balance accuracy passes on left spiral shell
Bolt fixes left damper；
Right damper is bolted on the right side of the levelling bench；
Rotor frock is fixed with by bearing pin between the left electrokinetic transducer and right electrokinetic transducer；
The rotor frock center is clamped with quartz flexible accelerometer；
The rotor frock is brass tool assembly.
Further, the left damper, right damper are damping spring damper.
Further, the computer testing evaluation system is provided with industrial computer, and the industrial computer connects left electricity by wire
Dynamic sensor and right electrokinetic transducer.
The advantages of the utility model and good effect are：
1st, according to quartz flexible accelerometer real work situation, it is proposed that it is a kind of using signal Oscillation Amplitude as ordinate,
Duration does abscissa, and the vibration area of the two product is as dynamic balance accuracy Accuracy Assessment.This method change in the past according to
By the pattern of hand valuation dynamic balance accuracy, the evaluation method quantification of quartz flexible accelerometer dynamic balance accuracy improves
Dynamically balanced checkability and reliability；
2nd, the device can be judged, automatic decision rotor according to the vibration area calculated with the empirical value of storage
Whether dynamic balance accuracy meets the requirements, and the dynamic balance accuracy evaluation and inspection of product can realize automation, by the production of product
Efficiency improves 30%.
Brief description of the drawings
Fig. 1 is that the evaluating apparatus structure for the quartz flexible accelerometer dynamic balance accuracy that the utility model embodiment provides is shown
It is intended to.
In figure：1st, computer testing evaluation system；2nd, left electrokinetic transducer；3rd, right electrokinetic transducer；4th, left damper；5、
Right damper；6th, levelling bench；7th, quartz flexible accelerometer；8th, rotor frock.
Embodiment
For invention, features and effects of the present utility model can be further appreciated that, following examples are hereby enumerated, and coordinate
Accompanying drawing describes in detail as follows.
Structure of the present utility model is explained in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the evaluating apparatus for the quartz flexible accelerometer dynamic balance accuracy that the utility model embodiment provides,
The evaluating apparatus is provided with levelling bench 6；
The levelling bench 6 passes on left bolt and is fixed with left damper 4, and the left upside of damper 4 support passes through spiral shell
Bolt has been fixed with left electrokinetic transducer 2；
The right side of levelling bench 6 has been bolted right damper 5, and the right upside of damper 5 support passes through
Bolt has been fixed with right electrokinetic transducer 3；
Rotor frock 8 is fixed with by bearing pin between the left electrokinetic transducer 2 and right electrokinetic transducer 3；
The center of rotor frock 8 is clamped with quartz flexible accelerometer 7；
The left electrokinetic transducer 2, right electrokinetic transducer 3 electrically connect with computer testing evaluation system 1.
As preferred embodiment of the present utility model, the rotor frock 8 uses brass tool assembly.
As preferred embodiment of the present utility model, the levelling bench 6 is using long by 400, wide by 200,80 millimeters of thickness big
Reason stone flat board.
As preferred embodiment of the present utility model, the left damper 4 uses ZTA-10 damping spring dampers, described
Right damper 5 uses ZTA-10 damping spring dampers.
As preferred embodiment of the present utility model, the left electrokinetic transducer 2 uses YXSD100-V type sensors, institute
State right electrokinetic transducer 3 and use YXSD100-V type sensors.
As preferred embodiment of the present utility model, the computer testing evaluation system 1 is provided with industrial computer, the work
Control machine is provided with A/D analog input cards, and the industrial computer is provided with from the dynamic balance accuracy self study ground, judges software.
As preferred embodiment of the present utility model, the computer testing evaluation system 1 is provided with dynamic balance accuracy and commented
Valency method, method include：
(1) once driven when being worked according to accelerometer, without maintain power, rotor speed coast-down the characteristics of, consider
To rotor in tick-over the big factor of dynamic balance accuracy error of quality appraisement, will evaluation the period be fixed on rotor work driven after
One section of short period in, the period is not more than 20s, and may remain in a higher range in the period internal rotor rotating speed
It is interior；
(2) duration also has filter effect, can more accurate evaluation rotor dynamic balance accuracy；
(3) severe degree of vibration is reflected by the use of signal amplitude as the ordinate for calculating vibration area, signal amplitude.
The levelling bench 6 that the utility model embodiment provides is put down using long by 400, wide by 200, thick 80 millimeters marble
Plate, lie in a horizontal plane on sensing chamber's desktop, there is provided experimental bench horizontal base, reduce each component from tilting, left damper 4 uses
ZTA-10 damping springs damper and right damper 5 use ZTA-10 damping spring dampers, left damper 4 and right damper 5
Mounted in levelling bench, absorbing ambient vibration influences to caused by detection and supports left electrodynamic transducers 2 and right electrodynamic type respectively
Sensor 3, the output line of two sensors, it is connected to the Special-purpose plate card of computer testing evaluation system 1.YXSD100-V is electronic
Sensor has good mechanically and electrically performance：Sensitivity 20mV/mm/S, 10-1000Hz of frequency response, can vibration measuring width≤2mm
(P-P), peak acceleration 10g.Rotor frock 8 uses brass tool assembly, has carried out static balance experiment, it can load and unload quilt rapidly
Rotor is surveyed, both ends are separately fixed at left and right electrodynamic transducers upper end, and quartz flexible accelerometer 7 is firmly clipped in frock center and used
In the tested high speed rotor of measurement.The vibration signal of rotor is converted to normal voltage by left electrokinetic transducer 2, right electrokinetic transducer 3
Signal, there is provided to computer testing evaluation system 1, it is as follows that computer testing evaluation system 1 possesses function：
(1) can be with automatic data collection vibration signal；
(2) there is self-studying mode, statistical analysis can be carried out to multiple vibration area result of calculation, acquisition can be accurate
The really empirical value of evaluation dynamic balance accuracy；
(3) there is automatic Evaluation pattern, areal calculation can be carried out to the vibration signal of collection, and compared with empirical value
Compared with whether qualified to the dynamic balance accuracy of rotor to judge；
Left electrokinetic transducer 2, right electrokinetic transducer 3, it is characterised in that vibration signal is changed into standard voltage signal.Meter
Calculate the vibration area of one section of duration；Under system " self study " pattern, the self study of computer testing evaluation system 1, accumulation are some
After secondary vibration data, empirical value and the storage of vibration area are extracted；Under system " dynamic balance accuracy evaluation " pattern, system
Current rotor dynamic balancing precision is evaluated with the empirical value of storage, judges whether it meets system requirements.
Described above is only to preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, it is every according to the technical essence of the utility model to any simple modification made for any of the above embodiments, equivalent variations with
Modification, is belonged in the range of technical solutions of the utility model.
Claims (4)
- A kind of 1. evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy, it is characterised in that the quartz flexible acceleration Count support on the upside of the left damper of the evaluating apparatus of dynamic balance accuracy and be bolted left electrokinetic transducer；Support has been bolted right electrokinetic transducer on the upside of right damper；The left electrokinetic transducer, right electrokinetic transducer are electrically connected with computer testing evaluation system by wire.
- 2. the evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy as claimed in claim 1, it is characterised in that described The levelling bench of the evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy passes on left bolt and fixes left damper；Right damper is bolted on the right side of the levelling bench；Rotor frock is fixed with by bearing pin between the left electrokinetic transducer and right electrokinetic transducer；The rotor frock center is clamped with quartz flexible accelerometer；The rotor frock is brass tool assembly.
- 3. the evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy as claimed in claim 1, it is characterised in that the left side Damper, right damper are damping spring damper.
- 4. the evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy as claimed in claim 1, it is characterised in that the meter Calculation machine test evaluation system is provided with industrial computer, and the industrial computer connects left electrokinetic transducer and right electronic sensing by wire Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721008834.2U CN207147706U (en) | 2017-08-14 | 2017-08-14 | A kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721008834.2U CN207147706U (en) | 2017-08-14 | 2017-08-14 | A kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy |
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| CN207147706U true CN207147706U (en) | 2018-03-27 |
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| CN201721008834.2U Active CN207147706U (en) | 2017-08-14 | 2017-08-14 | A kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629752A (en) * | 2020-12-28 | 2021-04-09 | 山西大学 | Atomic ensemble mass center speed measuring device and method |
| GR20220100445A (en) * | 2022-05-27 | 2023-12-11 | Ιωαννης Σωτηριου Παρασκευοπουλος | Portable dynamic weighing device for ship and factory engines |
-
2017
- 2017-08-14 CN CN201721008834.2U patent/CN207147706U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629752A (en) * | 2020-12-28 | 2021-04-09 | 山西大学 | Atomic ensemble mass center speed measuring device and method |
| CN112629752B (en) * | 2020-12-28 | 2021-09-28 | 山西大学 | Atomic ensemble mass center speed measuring device and method |
| GR20220100445A (en) * | 2022-05-27 | 2023-12-11 | Ιωαννης Σωτηριου Παρασκευοπουλος | Portable dynamic weighing device for ship and factory engines |
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