CN105606323B - A kind of visual detection device and stability method of adjustment of motor oscillating test - Google Patents
A kind of visual detection device and stability method of adjustment of motor oscillating test Download PDFInfo
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- CN105606323B CN105606323B CN201610096471.6A CN201610096471A CN105606323B CN 105606323 B CN105606323 B CN 105606323B CN 201610096471 A CN201610096471 A CN 201610096471A CN 105606323 B CN105606323 B CN 105606323B
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses the visual detection devices and stability method of adjustment of a kind of test of motor oscillating, damper is mounted on motor, including slave computer, host computer and at least one acceleration sensing module, acceleration sensing module is installed in damper surface, and collected data are transmitted in slave computer；Slave computer calculates data, carries out data processing using kalman filtering algorithm, obtains each corresponding acceleration value；Upper computer and lower computer is connected by communication, and has the processing application program of processing acceleration value, is depicted as waveform graph and is displayed on the screen, and method of adjustment is based on detection device and is adjusted to stability.Its technical solution can greatly enhance the readability and comparativity of data, it can intuitively observe and the difference of more each acceleration value, accurately increase or decrease the quality of damper each position, the vibration of motor each position is set to reach unanimity equilibrium, to reduce because influence of the vibration to operating condition, extends motor service life.
Description
Technical field
The present invention relates to motor shock absorption device vibration test detection technique field more particularly to a kind of motor oscillating test can
Depending on changing detection device and stability method of adjustment.
Background technique
Motor can generate vibration during operation, and on the one hand vibration can aggravate the mill that each device is mutual inside motor
On the other hand damage can generate unstable axially or radially loss to load.For the vibration for slowing down motor, usually it is connected to the motor
One damper is set, to the vibration for the motor that mitigates and decay, to extend the service life of motor.Damper is usually can
Adjustment, so that the vibration of each position of motor can be made to reach unanimity equilibrium after being mounted on motor.For this purpose, Demand Design one
Kind can facilitate to vibrate the device and method clearly shown to motor shock absorption device each position, accurately to carry out phase to damper
The adjustment answered.
Summary of the invention
For the above-mentioned problems in the prior art, one kind is now provided and is intended to that motor shock absorption device each position can be vibrated
The detection device and stability method of adjustment of status visualization, to overcome above-mentioned technological deficiency.
Specific technical solution is as follows:
A kind of visual detection device of motor oscillating test, as excitation power source, damper is mounted on described motor
On motor, the visual detection device includes slave computer, host computer and at least one acceleration sensing module,
The acceleration sensing module is respectively fixedly disposed on the unduplicated specific position in damper surface, and point
It is not connected by communication with the slave computer so that collected vibration information data to be transmitted in the slave computer；
The slave computer according to the vibration information data calculate each acceleration sensing module in all directions or
The value that fixed-direction is read, and application-dependent data Processing Algorithm carries out data processing, it is each when obtaining the motor oscillating
The acceleration value of acceleration sensing module position；
The host computer and the slave computer are connected by communication, each acceleration value that the slave computer obtains processing
It is uploaded in the host computer, there is the processing application program for handling the acceleration value in the host computer, the processing is answered
The obtained acceleration value is depicted as accompanying drawings with program and is displayed on the screen.
Also there is the analysis application program of the analysis acceleration value and the accompanying drawings in the host computer, it is described
Analysis application program can calculate the quality that should be increased or decreased on each specific position of the damper and display
On the screen.
Each acceleration sensing module is respectively provided with an accelerometer, and the accelerometer adhesion be set to it is described
On specific position, to detect the vibration information data on the specific position.
Multiple clump weights are detachably installed, and on each specific position of the damper on the damper
The number and quality of the clump weight can increase or decrease.
The clump weight has the plurality of specifications of previously prepared different quality, and multiple clump weights are revolved by stud
It connects and is mounted on the damper.
The visual detection device is further equipped with multiple magnetic iron blocks, in the visual detection device operation test
When, progress trim processing on the damper is mounted on by the magnetic iron block absorption, and after experiment by the Armco magnetic iron
Block the clump weight of quality such as replaces with and installs to the specific position.
Preferably, the quantity of the acceleration sensing module is four.
Preferably, the host computer is the end PC or mobile terminal.
Preferably, the slave computer is Arduino single-chip microcontroller or ATMega328 single-chip microcontroller.
Preferably, the acceleration sensing module communicates phase with the slave computer by IIC or UART or RS232 serial ports
Even.
The invention also provides a kind of stability adjustment of visual detection device tested based on the motor oscillating
Method, including detecting step and aligning step:
Wherein, the detecting step are as follows:
Step a, at least one described acceleration sensing module acquire each specific position in the motor operation course
Vibration information data, and be transmitted in the slave computer；
Step b, the slave computer calculate each acceleration sensing module each according to the vibration information data
The value that direction or fixed-direction are read, and unit is mm/s, and carries out data processing, is obtained each described when the motor oscillating
The acceleration value of acceleration sensing module position；
Step c, the host computer receive each acceleration value of the slave computer transmission, are respectively formed wavy curve
Scheme and is shown on screen；
The aligning step are as follows:
Step d compares vibration amplitude difference or time difference between each waveform graph), obtain the damping
The quality that should be increased or decreased on each specific position of device；Alternatively,
The host computer analyzes the acceleration value and the waveform graph, and calculating should be in each of the damper
The quality that increases or decreases on the specific position is simultaneously shown on screen；
Step e increases or decreases the clump weight of corresponding mass on the specific position of the damper, and again into
The row detecting step is detected；
The detecting step and the aligning step repeat to carry out in turn, each described until what is shown on the host computer
Each curve of waveform graph tends to straight line, alternatively,
The quality that should be increased or decreased that the host computer is calculated is lower than preset stable quantity threshold value.
The beneficial effect of above-mentioned technical proposal is:
(1) slave computer is connected with host computer, and slave computer connects at least four acceleration sensing modules, can greatly enhance number
According to readability and comparativity, more intuitive observation and compare the difference of the acceleration value of each specific position when motor oscillating
It is different, and damper is adjusted correspondingly, to reduce because of influence of the vibration to operating condition；
(2) increased or decreased by the clump weight quality to damper on motor, tested repeatedly it can be concluded that
The quality of performance when motor oscillating and difference have been carried out number by estimator by the acceleration information vibrated when motor performance is best
Change and standardizes；
(3) can fast and accurately be increased or decreased according to data the clump weight of motor some position damper number and
Quality makes acceleration value when motor oscillating reach optimum value, and the vibration of motor each position reaches unanimity, and motor oscillating tends to be equal
Weighing apparatus, to extend motor service life；
(4) Kalman filtering algorithm is used, the data of acquisition are handled, achieve the effect that smoothed data, it can be effective
The influence for rejecting ambient noise interference when dynamic is tested, improves measurement accuracy.
Detailed description of the invention
Fig. 1 is the basic structure block diagram of the visual detection device of motor oscillating of the present invention test.
Specific embodiment
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.In embodiments, the part of same structure uses
Identical appended drawing reference and omit description.
It refering to fig. 1, is the basic structure block diagram of the visual detection device of motor oscillating of the present invention test.Such as institute in figure
Show, the visual detection device includes slave computer 4, host computer 5 and at least one acceleration sensing module 3, and damper
2 are mounted on motor 1, and motor 1 is used as excitation power source.
Acceleration sensing module 3 is respectively fixedly disposed on the unduplicated specific position in 2 surface of damper, and respectively under
Position machine 4 is connected by communication so that collected vibration information data to be transmitted in slave computer 4；
Slave computer 4 calculates each acceleration sensing module 3 in all directions or fixation side according to the vibration information data
To the value of reading, and application-dependent data Processing Algorithm, for example, adaptive kalman filtering algorithm (Kalman filtering algorithm) into
Row data processing, to obtain the acceleration value G of each 3 position of acceleration sensing module when motor 1 vibrates.Wherein, G=a*
G, -2 < a < 2,3 range of acceleration sensing module are set as -2g -2g, g=9.8m/s^2.
Host computer 5 and slave computer 4 are connected by communication, and each acceleration value G that processing obtains is uploaded to by slave computer 4
In the machine 5 of position, host computer 5 is interior to have the processing application program for handling the acceleration value G, and the processing application program described will add
Velocity amplitude G is depicted as accompanying drawings and is displayed on the screen.The readability and comparativity of data can be greatly enhanced in this way, more
Add the difference for intuitively observing and comparing the acceleration value of each specific position when motor 1 vibrates, wherein the phase in the present embodiment
Closing schematic diagram is waveform graph but it is also possible to be bar chart, cake chart etc., not only can be the processing of acceleration value to adding
Velocity amplitude is directly handled, the secondary treatment after being also possible to calculate mutually adjacent difference.And slave computer 4 described in the present embodiment is
Single-chip microcontroller is connected between host computer 5 and slave computer 4 by serial ports but it is also possible to be data processing devices such as such as FPGA, but can also
To be to be wirelessly connected, should not be limited to thoses mentioned above.
It is worth noting that be detachably equipped with multiple clump weights on damper 2, and counterweight block size quality have it is identical
Have it is different, can be according to the waveform graph shown in host computer 5 to the number and matter of clump weight on each specific position
Amount is increased or decreased, so that acceleration value when motor 1 vibrates reaches optimum value, the vibration of 1 each position of motor tends to one
It causes, the vibration of motor 1 tends to be balanced, to extend motor service life.Above-mentioned specific position is the test position on damper 2
It sets, is generally evenly arranged on damper 2, and preferably clump weight installation position, but not limited to this.Two are only shown in Fig. 1
Acceleration sensing module 3, but be only to illustrate, it is clear that it is at least four, and is labeled with quality indication number, the present embodiment on clump weight
In, the quantity of acceleration sensing module 3 is four, but not limited to this.
In a preferred embodiment, each acceleration sensing module is respectively provided with an accelerometer, and acceleration
Meter adhesion or clamping are set on the specific position, to detect the vibration information data on the specific position.
As a further preference in embodiment, the clump weight has a variety of of previously prepared different quality size
Specification, and multiple clump weights are screwed on by stud and are mounted on the damper, and can be according to being shown on screen in experiment
The quality that should be increased or decreased on the specific position selects to increase or decrease the clump weight of the corresponding mass on corresponding position,
With the acceleration value of each specific position of balance damper.In a particular application, multiple magnetic iron blocks can be also equipped with, it is described can
When depending on changing detection device operation test, progress trim processing on the damper is mounted on by the magnetic iron block absorption, and
The magnetic iron block such as is replaced at the clump weight of quality after experiment and is installed to the specific position.To more
It is conveniently accomplished counterweight trim function.
In a preferred embodiment, also have in host computer 5 and analyze the acceleration value and the wavy curve
The analysis application program of figure, the analysis application program, which can calculate increase on each specific position of damper 2, to add deduct
Few quality is simultaneously shown on screen, so that each position vibration of motor reaches unanimity, the vibration of motor 1 tends to be balanced.
As a further preference in embodiment, host computer 5 is the end PC or mobile terminal；The processing application program is by compiling
Journey software Pro cessing or Matlab are obtained, and can show that each acceleration module is adopted in the processing application program
The corresponding waveform graph of vibration information data of collection.
Obviously, by comparing the difference of each waveform graph, so that it may judge: (1) some position Vibration Condition of motor；
(2) motor body vibration situation；(3) whether motor shock absorption device Mass Distribution is balanced；(4) stability and performance.Therefore, group
Dress personnel by the observation to data and can compare it is known that the overall performance that motor 1 vibrates, and data according to the observation are fast
The fast number or quality for accurately increasing or decreasing clump weight on some position damper of motor；Journey can also be applied according to analysis
The qualitative data that should be increased or decreased that sequence is calculated is adjusted correspondingly clump weight on damper, so that motor be made to shake
Acceleration value when dynamic reaches optimum value.
As a further preference in embodiment, slave computer 4 is Arduino single-chip microcontroller or ATMega328 single-chip microcontroller；Add
Velocity pick-up module 3 is connected by communication by IIC or UART or RS232 serial ports with single-chip microcontroller 4.Acceleration sensing module 3 is using pressure
Electric-type or pressure resistance type or condenser type or servo transducer, to acquire the corresponding vibration of each specific position on damper 2 in real time
Dynamic information data.
It is worth noting that Kalman filter algorithm is normal to the accelerometer Dynamic Data Processing of acquisition in the prior art
With and effective algorithm, main includes calibrating and two functions of filtering, and particular content are as follows:
The offset of acceleration value is from two aspects, first is that due to the measurement accuracy of chip, cause the acceleration measured to
Amount is not perpendicular to the earth；Second is that the precision that chip is installed over the whole system is limited, the coordinate system of system and chip is very
Difficulty reaches perfect registration.The former is known as reading offset, and the latter is known as angle offset.Because being nonlinear dependence between reading and angle
System so first must individually calibrate reading offset to carry out calibrating with high precision, then in systems afterwards calibrates chip fixation
Angle offset.
Calibration needs to find out the central point that the data of swing surround.By taking GRY_Z as an example, in the static shape of chip processing
When state, this reading is should be gravity acceleration g (gravitation) theoretically, but it often has an offset, such as with
The interval of 10ms has read 50 values, and the mean value of this 50 values, is exactly offset.After obtaining offset, each reading is all
Subtracting offset can be obtained by the reading after calibration.This certain offset is estimated value, more accurately offset
Being counted to a large amount of data can just know, the bigger data volume the more quasi-, but the time counted is also slower.
Due to the time variation and randomness of actual conditions, noise statistics may be unknown and time-varying, so that plus
The data dithering of velocity sensor acquisition is obvious.In order to effectively inhibit noise, filtering accuracy, adaptive Kalman filter are improved
Algorithm handles the data of acquisition, achievees the effect that smoothed data, can effectively reject ambient noise interference when dynamic is tested
Influence, improve measurement accuracy.
The invention also provides the stability methods of adjustment of the above-mentioned visual detection device of application.The stability adjustment side
Method is based on the visual detection device, including detecting step and aligning step:
Wherein, detecting step are as follows:
Step a, at least four acceleration sensing modules 3 acquire the vibration letter of each specific position in 1 operational process of motor
Data are ceased, and are transmitted in slave computer 4；
Step b, slave computer 4 according to the vibration information data calculate each acceleration sensing module 3 in all directions or
The value that fixed-direction is read, and unit is mm/s, and carries out data processing, obtains each acceleration sensing mould when motor 1 vibrates
The acceleration value G of 3 position of block；
Step c, host computer 5 receive each acceleration value that slave computer 4 transmits, are respectively formed waveform graph and are shown in
On screen；
Aligning step are as follows:
Step d compares vibration amplitude difference or time difference between each waveform graph, obtains each of damper 2
The quality that should be increased or decreased on specific position；Alternatively,
Host computer 5 analyzes the acceleration value and the waveform graph, and calculating should be in each certain bits of damper 2
It sets the quality increased or decreased and is shown on screen；
Step e increases or decreases the clump weight of corresponding mass on the specific position of damper 2, and is detected again
Step is detected；
And detecting step and aligning step repeat to carry out in turn, until each waveform graph for being shown on host computer 5
Each curve tends to straight line, alternatively,
The quality that should be increased or decreased that host computer 5 is calculated is lower than preset stable quantity threshold value.
Wherein, each specific position when the stable quantity threshold value reaches unanimity substantially for the vibration of each specific position
The quality that should be adjusted when being lower than stable quantity threshold value, is considered as the vibration of motor 1 and reaches unanimity substantially, tend to be balanced.
In the above-mentioned technical solutions, it is increased or decreased, is carried out anti-by the clump weight quality to damper on motor
Repetition measurement examination is it can be concluded that the acceleration information vibrated when motor performance is best, by the quality of performance when motor oscillating and difference by estimating
Metering is digitized and has been standardized；By the observation to data and compare it is known that motor oscillating overall performance；Root
The number and quality that the clump weight of motor some position damper can be fast and accurately increased or decreased according to data, make motor shake
Acceleration value when dynamic reaches optimum value, and the vibration of motor each position reaches unanimity, and motor oscillating tends to be balanced, thus reduce because
The influence to operating condition is shaken, motor service life is extended.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It modifies or even equivalent, but falls in protection scope of the present invention.
Claims (2)
1. a kind of visual detection device of motor oscillating test, for motor as excitation power source, damper is mounted on the electricity
On machine, which is characterized in that the visual detection device includes slave computer, host computer and at least one acceleration sensing mould
Block,
The acceleration sensing module is respectively fixedly disposed on the unduplicated specific position in damper surface, and respectively with
The slave computer is connected by communication so that collected vibration information data to be transmitted in the slave computer；
The slave computer calculates each acceleration sensing module in all directions according to the vibration information data or fixes
The value that direction is read, and application-dependent data Processing Algorithm carries out data processing, it is each described when obtaining the motor oscillating
The acceleration value of acceleration sensing module position；
The host computer and the slave computer are connected by communication, and each acceleration value that the slave computer obtains processing uploads
To in the host computer, having the processing application program for handling the acceleration value in the host computer, journey is applied in the processing
The obtained acceleration value is depicted as accompanying drawings and is displayed on the screen by sequence；
Also there is the analysis application program of the analysis acceleration value and the accompanying drawings, the analysis in the host computer
Application program can calculate the quality that should be increased or decreased on each specific position of the damper and be shown in screen
On curtain；
Each acceleration sensing module is respectively provided with an accelerometer, and the accelerometer adhesion be set to it is described specific
On position, to detect the vibration information data on the specific position；
Multiple clump weights are detachably installed, and described on each specific position of the damper on the damper
The number and quality of clump weight can increase or decrease；
The clump weight has the plurality of specifications of previously prepared different quality, and multiple clump weights are screwed on peace by stud
On the damper；
The visual detection device is further equipped with multiple magnetic iron blocks and leads in the visual detection device operation test
It crosses the magnetic iron block absorption and is mounted on progress trim processing on the damper, and after experiment replace the magnetic iron block
For etc. quality the clump weight and install on the specific position；
The quantity of the acceleration sensing module is four；
The host computer is the end PC or mobile terminal；
The slave computer is Arduino single-chip microcontroller or ATMega328 single-chip microcontroller.
2. a kind of stability method of adjustment of the visual detection device based on motor oscillating as described in claim 1 test,
It is characterised in that it includes detecting step and aligning step:
Wherein, the detecting step are as follows:
Step a, at least one acceleration sensing module acquire the vibration of each specific position in the motor operation course
Information data, and be transmitted in the slave computer；
Step b, the slave computer calculate each acceleration sensing module in all directions according to the vibration information data
Or the value that fixed-direction is read, and unit is mm/s, and carries out data processing, obtains each acceleration when the motor oscillating
Spend the acceleration value of sensing module position；
Step c, the host computer receive each acceleration value of the slave computer transmission, are respectively formed waveform graph simultaneously
It is shown on screen；
The aligning step are as follows:
Step d compares vibration amplitude difference or time difference between each waveform graph, obtains each of the damper
The quality that should be increased or decreased on a specific position；Alternatively,
The host computer analyzes the acceleration value and the waveform graph, and calculating should be in each described of the damper
The quality that increases or decreases on specific position is simultaneously shown on screen；
Step e, increases or decreases the clump weight of corresponding mass on the specific position of the damper, and carries out institute again
Detecting step is stated to be detected；
The detecting step and the aligning step repeat to carry out in turn, until each waveform shown on the host computer
Each curve of curve graph tends to straight line, alternatively,
The quality that should be increased or decreased that the host computer is calculated is lower than preset stable quantity threshold value.
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| CN201610096471.6A CN105606323B (en) | 2016-02-22 | 2016-02-22 | A kind of visual detection device and stability method of adjustment of motor oscillating test |
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| CN102620807A (en) * | 2012-03-22 | 2012-08-01 | 内蒙古科技大学 | System and method for monitoring state of wind generator |
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