CN109668686A - A kind of dynamic balance measuring device and its method - Google Patents
A kind of dynamic balance measuring device and its method Download PDFInfo
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- CN109668686A CN109668686A CN201811516468.0A CN201811516468A CN109668686A CN 109668686 A CN109668686 A CN 109668686A CN 201811516468 A CN201811516468 A CN 201811516468A CN 109668686 A CN109668686 A CN 109668686A
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- 238000005259 measurement Methods 0.000 claims abstract description 47
- 238000000691 measurement method Methods 0.000 claims description 12
- 230000035772 mutation Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 2
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Classifications
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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
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
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Abstract
The invention discloses a kind of dynamic balance measuring device and its method, which includes dynamic balancing machine and power supply speed measuring device；Dynamic balancing machine includes vibration measurement component and dynamic balancing machine solver, wherein the vibration measurement component includes: that vibration measurement component is equipped with a bracket, the branch is provided with a sensor, obtains vibration measurement data for measuring vibration caused by momenttum wheel rotor；Speed measuring device driving momenttum wheel rotor of powering rotates, and measurement momenttum wheel rotor speed is default simultaneously and detects motor electrical null position；Dynamic balancing machine solver obtains amount of unbalance and its relative position of momenttum wheel according to acquisition momenttum wheel rotor speed and motor electrical null position and in conjunction with vibration measurement data.The present invention utilizes existing installation interface on momenttum wheel, it is aided with the unilateral side that momenttum wheel is placed in bracket by weighting distribution wheel, momenttum wheel rotor speed and default, detection motor electrical null position are obtained using power supply speed measuring device, in conjunction with the vibration measurement data of Vibration-Measuring System, data combination obtains numerical value and the relative position of momenttum wheel rotor unbalance value.
Description
Technical field
The present invention relates to satellite momentum wheel design fields, and in particular to a kind of high-speed sealing momenttum wheel is dynamic with high-precision
Balancing a survey method.
Background technique
Momenttum wheel dynamic balancing measurement is usually to carry out before wheel body is packed into vacuum (-tight) housing and welded seal.Existing measurement
Method is by the driving of wheel body revolving speed using power supply-speed measuring equipment to rotating speed of target, by dynamic balancing machine measuring rotating speed, mechanical zero with
The related datas such as vibration.As shown in Figure 1, 2,2 ' both ends of the wheel body difference mounting flange tooling 1 ' and stud of motor will be installed
3 ', and be placed on bracket 5 ', then compressed with briquetting 4 '.It is marked on wheel body with marking pen, it is infrared on dynamic balancing machine
Probe 7 ' measures wheel body revolving speed by identifying the label, and determines the phase of wheel body amount of unbalance labeled as mechanical zero with this
To position, meanwhile, the sensor 6 ' on bracket 5 ' can measure wheel body vibration data, finally be taken turns by dynamic balancing machine data combination
The amount of unbalance of body and its relative position.There are two o'clock deficiencies for the measurement method, first is that this method is only applicable to exposed wheel body
Dynamic balancing measurement is then unable to measure for wheel body is assembled to the momenttum wheel in vacuum (-tight) housing and sealed, and in actual production,
Due to assembly manipulation, environmental test, part cooperation etc. certain shadow can be caused to the whole residual unbalance, of momenttum wheel
It rings, it is therefore necessary to dynamic balancing detection be carried out to it before momenttum wheel product is delivered；Second is that using infrared probe identification machinery zero
The method of position measures wheel body revolving speed, it will usually which there is a certain error, this causes the measurement result of amount of unbalance also to be deposited indirectly
In certain deviation, to influence the quality and reliability of momenttum wheel product.In view of the problem present on, need to propose one kind
For the high-precision balancing measuring method of high-speed sealing momenttum wheel.
Summary of the invention
The object of the present invention is to provide a kind of dynamic balance measuring device and its methods, are connect using installation existing on momenttum wheel
Mouthful, be aided with the unilateral side that momenttum wheel is placed in bracket by weighting distribution wheel, using power supply speed measuring device come obtain momenttum wheel rotor speed and
Default, detection motor electrical null position, in conjunction with the vibration measurement data of Vibration-Measuring System, data combination obtains momenttum wheel rotor not
The numerical value of aequum and relative position.
In order to achieve the goal above, the present invention is achieved by the following technical solutions:
A kind of dynamic balance measuring device, its main feature is that, including dynamic balancing machine and power supply speed measuring device；
The dynamic balancing machine includes vibration measurement component and dynamic balancing machine solver, wherein the vibration measurement component
Include:
The vibration measurement component is equipped with a bracket, and the branch is provided with a sensor, for measuring momentum rotation
Vibration caused by sub obtains vibration measurement data；
The power supply speed measuring device driving momenttum wheel rotor rotation, measurement momenttum wheel rotor speed is default simultaneously and detects
Motor electrical null position；
The dynamic balancing machine solver is according to acquisition momenttum wheel rotor speed and motor electrical null position and vibration is combined to survey
Amount data obtain amount of unbalance and its relative position of momenttum wheel.
The vibration measurement component includes:
Weighting distribution wheel, the two sides for the bracket that is placed in momenttum wheel；
Support rod, adapter flange, described support rod one end are set as flange arrangement, are connected to adapter flange, other end connection
In weighting distribution wheel, the adapter flange connection support bar and momenttum wheel.
The described power supply speed measuring device identification is connected the mutation of Hall sensor signal in motor with momenttum wheel, it is described suddenly
You are preset as motor electrical null position at the mutation of sensor signal.
A kind of measurement method using above-mentioned dynamic balance measuring device, the measurement method include the following steps:
Adapter flange is connected on momenttum wheel by S1, then support rod is fastened on adapter flange, in the support rod other end
Weighting distribution wheel is connected, momentum wheel system to be measured is formed；
S2, the momentum wheel system to be measured connected are fixed on bracket, and with briquetting with they sup-port；
S3, the caused vibration of measurement momenttum wheel rotor obtain vibration measurement data；
S4, power supply speed measuring device are connected with momenttum wheel, open power supply speed measuring device, and be powered driving momenttum wheel, preset simultaneously
Motor electrical null position；
S5, after momenttum wheel revolving speed reaches rotating speed of target and stablizes, dynamic balancing machine solver turns according to momenttum wheel rotor is obtained
Speed and motor electrical null position and amount of unbalance and its relative position that momenttum wheel is obtained in conjunction with vibration measurement data.
After the step S2 further include:
Bracket spacing L, momenttum wheel rotor c.g. to farthest distance between the fulcrum c are measured, by momenttum wheel rotor thickness b, momentum
Wheel radius r and L, c are input in dynamic balancing machine solver, and are selected using weightening finish method mode or duplicate removal method mode.
Motor electrical null position is preset in the step S4 includes:
The described power supply speed measuring device identification is connected the mutation of Hall sensor signal in motor with momenttum wheel, it is described suddenly
You are preset as motor electrical null position at the mutation of sensor signal.
Compared with prior art, the present invention having the advantage that
The method for replacing infrared probe identification wheel body label mechanical zero using the method for default motor electrical null position, so that
Dynamic balancing detection can be carried out to the high speed momenttum wheel sealed；And-momenttum wheel the rotor speed that measures of speed measuring equipment of powering
Precision will be apparently higher than the method that dynamic balancing machine identifies wheel body mechanical zero by infrared probe, this is also improved to a certain extent
Dynamically balanced measurement accuracy, improves the quality and reliability of momenttum wheel product.
Detailed description of the invention
Fig. 1 is the wheel body dynamic balancing measurement schematic diagram of the prior art；
Fig. 2 is dynamic balancing measurement method schematic diagram in the prior art；
Fig. 3 is a kind of structural schematic diagram of dynamic balance measuring device of the present invention；
Fig. 4 is the position signal timing diagram of motor Hall sensor；
Fig. 5 is unilateral dynamic balancing measurement method schematic diagram.
Specific embodiment
The present invention is further elaborated by the way that a preferable specific embodiment is described in detail below in conjunction with attached drawing.
As shown in figure 3, a kind of dynamic balance measuring device, including dynamic balancing machine and power supply speed measuring device；The dynamic balancing
Machine includes vibration measurement component and dynamic balancing machine solver, wherein the vibration measurement component includes: the vibration measurement
Component is equipped with a bracket 5, and the branch is provided with a sensor 6, for measuring momenttum wheel rotor due to mass eccentricity, bearing diameter
Vibration measurement data are obtained to vibration caused by the factors such as bounce；The power supply speed measuring device driving momenttum wheel rotor rotation,
Measurement momenttum wheel rotor speed is default simultaneously and detects motor electrical null position；The dynamic balancing machine solver is according to acquisition momentum
Wheel rotor speed and motor electrical null position and amount of unbalance and its relative position that momenttum wheel is obtained in conjunction with vibration measurement data.
The vibration measurement component includes: weighting distribution wheel 8, and weighting distribution wheel 8 and momenttum wheel 11 are placed in 5 two sides of bracket, with
System balancing is kept, center is threaded circular hole；Support rod 9, one end are flange arrangements, are connected using screw and adapter flange 10
It connects, the other end is external thread structure, for connecting weighting distribution wheel 8；Adapter flange 10 utilizes mechanical erection intrinsic on momenttum wheel 11
Interface, for connection support bar 9 and momenttum wheel 11.
The Hall sensor signal in motor as shown in figure 4, the power supply speed measuring device identification is connected with momenttum wheel 11
Mutation, the mutation of the Hall sensor signal are preset as motor electrical null position, replace infrared probe to identify exposed wheel with this
The method of the mechanical zero marked on body realizes the survey of the inspection to the momenttum wheel rotor unbalance value being sealed in vacuum (-tight) housing
Amount would generally specifically, in momenttum wheel motor stator fill the Hall sensor there are three same model specification to measure momentum
Rotor speed is taken turns, the position signal timing diagram of Hall sensor is as shown in figure 4, its graph curve is square wave, by presetting Hall
The moment of square-wave signal mutation is electrical null position, and when motor drives the rotation of momenttum wheel rotor, system can be electrical by identifying
Zero-bit determines the relative position of momenttum wheel rotor unbalance value.
The momenttum wheel rotor speed obtained for electrical measurement speed variator measurement replaces infrared probe to identify the machinery of exposed wheel body
The method of the resulting momenttum wheel rotor speed of zero measurement controls the measurement accuracy of revolving speed within 1rpm, to a certain degree
On improve the measurement accuracy of momenttum wheel rotor dynamic balancing.
A kind of measurement method using above-mentioned dynamic balance measuring device, the measurement method include the following steps:
Adapter flange 10 is connected by screw on momenttum wheel 11 by S1, then support rod 9 is fastened on switching method with screw
On orchid 10, and in 9 other end of support rod, weighting distribution wheel 8 is connected with it by screw thread, and momentum wheel system to be measured is formed；
S2, the momentum wheel system to be measured connected is supported on bracket 5 with support rod 9, and is fixed with briquetting 4, is used
Dimensional measuring instrument measures bracket spacing L, momenttum wheel rotor c.g. to the parameters such as farthest distance between the fulcrum c, by momenttum wheel rotor
Two parameter values that thickness b, momenttum wheel duplicate removal (or weight gain) radius r are measured with more than are input in dynamic balancing machine solver,
And it selects using weightening finish method mode or duplicate removal method mode, as shown in Figure 5；
S3, the caused vibration of measurement momenttum wheel rotor obtain vibration measurement data；
S4, by power supply-speed measuring equipment and the cable connection of momenttum wheel 11, to power and obtain momenttum wheel rotor speed with
Default, detection motor electrical null position, by power supply speed measuring device and dynamic balancing machine solver by cable connection, to transmit momentum
Rotor speed and motor electrical null position data are taken turns, power supply speed measuring device is opened, be powered driving momenttum wheel, presets in the slow-speed of revolution
Motor electrical null position；
S5, after momenttum wheel revolving speed reaches rotating speed of target and stablizes, dynamic balancing machine solver turns according to momenttum wheel rotor is obtained
Speed and motor electrical null position and amount of unbalance and its relative position that momenttum wheel is obtained in conjunction with vibration measurement data, compare related mark
Standard, examines whether momenttum wheel product meets the requirements.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. a kind of dynamic balance measuring device, which is characterized in that including dynamic balancing machine and power supply speed measuring device；
The dynamic balancing machine includes vibration measurement component and dynamic balancing machine solver, wherein the vibration measurement component packet
It includes:
The vibration measurement component is equipped with a bracket, and the branch is provided with a sensor, draws for measuring momenttum wheel rotor
The vibration risen obtains vibration measurement data；
The power supply speed measuring device driving momenttum wheel rotor rotation, measurement momenttum wheel rotor speed is default simultaneously and detects motor
Electrical null position；
The dynamic balancing machine solver is according to acquisition momenttum wheel rotor speed and motor electrical null position and combines vibration measurement number
According to the amount of unbalance and its relative position for obtaining momenttum wheel.
2. dynamic balance measuring device as described in claim 1, which is characterized in that the vibration measurement component includes:
Weighting distribution wheel, the two sides for the bracket that is placed in momenttum wheel；
Support rod, adapter flange, described support rod one end are set as flange arrangement, are connected to adapter flange, and the other end, which is connected to, matches
Roller, the adapter flange connection support bar and momenttum wheel.
3. dynamic balance measuring device as described in claim 1, which is characterized in that the power supply speed measuring device identification and momentum
The mutation of Hall sensor signal in connected motor is taken turns, the mutation of the Hall sensor signal is preset as motor electrical zero
Position.
4. a kind of measurement method using dynamic balance measuring device as described in any one of claims 1-3, which is characterized in that institute
The measurement method stated includes the following steps:
Adapter flange is connected on momenttum wheel by S1, then support rod is fastened on adapter flange, is connected in the support rod other end
Weighting distribution wheel forms momentum wheel system to be measured；
S2, the momentum wheel system to be measured connected are fixed on bracket, and with briquetting with they sup-port；
S3, the caused vibration of measurement momenttum wheel rotor obtain vibration measurement data；
S4, power supply speed measuring device are connected with momenttum wheel, open power supply speed measuring device, and be powered driving momenttum wheel, while default motor
Electrical null position；
S5, after momenttum wheel revolving speed reaches rotating speed of target and stablizes, dynamic balancing machine solver according to obtain momenttum wheel rotor speed and
Motor electrical null position and amount of unbalance and its relative position that momenttum wheel is obtained in conjunction with vibration measurement data.
5. measurement method as claimed in claim 4, which is characterized in that after the step S2 further include:
Bracket spacing L, momenttum wheel rotor c.g. to farthest distance between the fulcrum c are measured, by momenttum wheel rotor thickness b, momenttum wheel half
Diameter r and L, c are input in dynamic balancing machine solver, and are selected using weightening finish method mode or duplicate removal method mode.
6. measurement method as claimed in claim 4, which is characterized in that preset motor electrical null position packet in the step S4
It includes:
The described power supply speed measuring device identification is connected the mutation of Hall sensor signal in motor with momenttum wheel, the Hall biography
The mutation of sensor signal is preset as motor electrical null position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811516468.0A CN109668686A (en) | 2018-12-12 | 2018-12-12 | A kind of dynamic balance measuring device and its method |
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| CN201811516468.0A CN109668686A (en) | 2018-12-12 | 2018-12-12 | A kind of dynamic balance measuring device and its method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414618A (en) * | 2020-10-13 | 2021-02-26 | 深圳航天科技创新研究院 | Weight removal system for momentum wheel and weight removal method for momentum wheel |
| WO2022123092A1 (en) * | 2020-12-09 | 2022-06-16 | Nazca Ingeniería, S.L. | Device for balancing of a wheel |
| CN115183941A (en) * | 2022-09-08 | 2022-10-14 | 哈尔滨工程大学 | Rotor dynamic balance gravity center measuring device |
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Application publication date: 20190423 |