CN108501443A - A kind of fine powder loading methods and system - Google Patents
A kind of fine powder loading methods and system Download PDFInfo
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- CN108501443A CN108501443A CN201810348542.6A CN201810348542A CN108501443A CN 108501443 A CN108501443 A CN 108501443A CN 201810348542 A CN201810348542 A CN 201810348542A CN 108501443 A CN108501443 A CN 108501443A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
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Abstract
The invention discloses a kind of fine powder loading methods and system, this method to include：Obtain the desired value and target error of fine powder to be loaded；Choose the feed rate to match with desired value and worst error；The actual mass of sample-adding fine powder is obtained in real time；The first loading errors are calculated, the pause sample-adding when the first loading errors are worst error；The absolute value of the difference of actual mass and aimed quality when first loading errors are sample-adding；The actual mass of sample-adding fine powder is obtained after sample-adding stops and calculates the second loading errors；Second loading errors are the absolute value of the difference of actual mass and aimed quality after sample-adding stops；Judge whether the second loading errors are less than target error, if then stopping being loaded；If feed rate and worst error that otherwise selection matches with the second loading errors continue to be loaded, and return to the actual mass step for obtaining sample-adding fine powder in real time.Loading methods using the present invention can high efficiency, high-precision, low cost the different fine powders of realization automatic sample.
Description
Technical field
The present invention relates to automation preparing technical field, more particularly to a kind of fine powder loading methods and system.
Background technology
In traditional technology, a kind of new material of research and development will generally pass through the longer time period, expend a large amount of manpower object
Power, the cycle through " preparation-performance evaluation-prepare again-performance revalue " so repeatedly are groped, most outstanding until obtaining
Until material.Under lab, material preparation process relies primarily on manpower and manual operations to realize.In order to prepare by it is different at
The inorganic bulk that the powder divided is constituted, experimenter generally require to expend considerable time and effort, not only waste of human resource,
Human cost is high, and working efficiency is low, and error rate is high.In addition, the sample-adding of fine powder is always a problem.Because of fine powder
Van der Waals force between grain etc. is very complicated, and and its easily sticks.
Invention content
Work efficiency is high, precision is high and fine powder loading methods at low cost and is the object of the present invention is to provide a kind of
System.
To achieve the above object, the present invention provides following schemes：
A kind of fine powder loading methods, the fine powder loading methods are applied on fine powder sample adding device；The fine powder
Last sample adding device includes holder, vertical slide unit, compression bar, stepper motor, miniature DC motor, horizontal sliding table, powder automatic sample
Case, precision balance and controller；The holder includes the first support of horizontal direction and the second support of vertical direction；It is described to hang down
Straight slide unit is fixed by the first support, and vertical with the first support；The compression bar is moveably mounted to described hang down
On straight slide unit；The horizontal sliding table is fixed by the second support, and vertical with the second support, is located at described vertical
The lower section of slide unit；The stepper motor includes the first stepper motor and the second stepper motor, the output of first stepper motor
End is connect by transmission mechanism with the vertical slide unit, for driving the vertical slide unit lower movement in vertical direction；It is described
The output end of second stepper motor is connect by transmission mechanism with the powder automatic sample case, for driving the powder automatic
Sample-adding case translates on the horizontal sliding table；The output end of the miniature DC motor is connected by transmission mechanism and the compression bar
It connects, for driving the compression bar to rotate vertically downward；The powder automatic sample case is the babinet of open uncovered；The precision day
It is flat, it is located at the lower section of the horizontal sliding table, the actual mass for measuring sample-adding fine powder；The controller and the accurate day
Flat, described stepper motor, the miniature DC motor are all connected with；The controller be used for control the compression bar depression depths and
The rotary speed of the compression bar；The controller internal database；The database includes that multiple and different control parameters combines
And the sample-adding combination corresponding to the control parameter combination；Each sample-adding combination include fine powder feed rate and
Worst error；Each control parameter combination includes compression bar depression depths and compression bar rotary speed；The fine powder sample-adding
Method includes：
Obtain the desired value and target error of fine powder to be loaded；
The feed rate to match with the desired value of the fine powder to be loaded and institute are chosen from the database
State worst error；
The actual mass of sample-adding fine powder is obtained in real time；
The first loading errors are calculated, and when first loading errors are the worst error, pause sample-adding；Described
When one loading errors are that the fine powder sample adding device works, the actual mass of the sample-adding fine powder and the target matter
The absolute value of the difference of amount；
After the fine powder sample adding device is stopped completely, the practical matter of the sample-adding fine powder is obtained again
Amount, and calculate the second loading errors；It is described after second loading errors are stopped completely for the fine powder sample adding device
It is loaded the absolute value of the difference of the actual mass and the aimed quality of fine powder；
Judge whether second loading errors are less than the target error, obtains the first judging result；
If first judging result indicates that second loading errors are less than the target error, stop being loaded；
If first judging result indicates that second loading errors are more than or equal to the target error, in institute
Selection matches with second loading errors in database the feed rate and the worst error is stated to continue to be loaded, and
Return to the actual mass step for obtaining sample-adding fine powder in real time.
Optionally, described choose from the database described adds with what the desired value of fine powder be loaded matched
Sample speed and the worst error specifically include：
Within the half for choosing the desired value that the worst error is the fine powder to be loaded from the database
The maximum sample-adding combination of feed rate described in the sample-adding combination.
Optionally, the feed rate that selection matches with second loading errors described in the database and
The worst error continues sample-adding and specifically includes：
The sample-adding within the half that the worst error is second loading errors is chosen from the database
The maximum sample-adding combination of feed rate described in combination.
The present invention also provides a kind of fine powder sample adding system, the fine powder sample adding system is applied to be loaded in fine powder and be filled
It sets；The fine powder sample adding device include holder, vertical slide unit, compression bar, stepper motor, miniature DC motor, horizontal sliding table,
Powder automatic sample case, precision balance and controller；The holder include horizontal direction first support and vertical direction
Two holders；The vertical slide unit, is fixed by the first support, and vertical with the first support；The compression bar is removable
Be mounted on the vertical slide unit on；The horizontal sliding table is fixed by the second support, and is hung down with the second support
Directly, it is located at the lower section of the vertical slide unit；The stepper motor include the first stepper motor and the second stepper motor, described first
The output end of stepper motor is connect by transmission mechanism with the vertical slide unit, for driving the vertical slide unit in vertical direction
It moves up and down；The output end of second stepper motor is connect by transmission mechanism with the powder automatic sample case, and band is used for
The powder automatic sample case is moved to translate on the horizontal sliding table；The output end of the miniature DC motor passes through transmission mechanism
It is connect with the compression bar, for driving the compression bar to rotate vertically downward；The powder automatic sample case is the case of open uncovered
Body；The precision balance is located at the lower section of the horizontal sliding table, the actual mass for measuring sample-adding fine powder；The control
Device is all connected with the precision balance, the stepper motor, the miniature DC motor；The controller is for controlling the pressure
The rotary speed of the depression depths of bar and the compression bar；The controller internal database；The database includes multiple and different
Control parameter combination and the corresponding sample-adding combination of control parameter combination；Each sample-adding combination includes fine powder
The feed rate and worst error at end；Each control parameter combination includes compression bar depression depths and compression bar rotary speed；
The fine powder sample adding system includes：
Desired value and target error acquisition module, the desired value for obtaining fine powder to be loaded and target error；
First chooses module, matches with the desired value of the fine powder to be loaded for choosing from the database
The feed rate and the worst error；
Actual mass acquisition module, for obtaining the actual mass for being loaded fine powder in real time；
First loading errors computing module, for calculating the first loading errors, and when first loading errors are described
When worst error, pause sample-adding；When first loading errors are that the fine powder sample adding device works, the sample-adding fine powder
The actual mass and the aimed quality absolute value of the difference；
Second loading errors computing module obtains again for working as after the fine powder sample adding device is stopped completely
The actual mass of the sample-adding fine powder, and calculate the second loading errors；Second loading errors are the fine powder
After sample adding device is stopped completely, the actual mass for being loaded fine powder is absolute with the difference of the aimed quality
Value；
First judging result obtains module, for judging whether second loading errors are less than the target error, obtains
To the first judging result；
Stop sample-adding module, for indicating that second loading errors are missed less than the target when first judging result
When poor, stop sample-adding；
Second chooses module, for indicating that second loading errors are more than or equal to institute when first judging result
When stating target error, selection matches with second loading errors in the database the feed rate and it is described most
Big error continues to be loaded, and returns to the actual mass step for obtaining sample-adding fine powder in real time.
According to specific embodiment provided by the invention, the invention discloses following technique effects：
The present invention provides a kind of fine powder loading methods and system, the fine powder loading methods are applied to be added in fine powder
On sampling device；The fine powder sample adding device includes holder, vertical slide unit, compression bar, stepper motor, miniature DC motor, level
Slide unit, powder automatic sample case, precision balance and controller；The controller internal database；The database includes multiple
The corresponding sample-adding combination of different control parameter combinations and control parameter combination；Each sample-adding, which combines, includes
The feed rate and worst error of fine powder；Each control parameter combination includes compression bar depression depths and compression bar rotation speed
Degree；This method includes：Obtain the desired value and target error of fine powder to be loaded；From the database choose with it is described to be added
The feed rate and the worst error that the desired value of sample fine powder matches；The practical matter of sample-adding fine powder is obtained in real time
Amount；The first loading errors are calculated, and when first loading errors are the worst error, pause sample-adding；Described first adds
When sample error is that the fine powder sample adding device works, the actual mass and the aimed quality of the sample-adding fine powder
Absolute value of the difference；After the fine powder sample adding device is stopped completely, the reality of the sample-adding fine powder is obtained again
Border quality, and calculate the second loading errors；After second loading errors are stopped completely for the fine powder sample adding device,
The absolute value of the difference of the actual mass and the aimed quality of the sample-adding fine powder；Judging second loading errors is
It is no to be less than the target error, obtain the first judging result；If first judging result indicates that second loading errors are small
In the target error, then stop being loaded；If first judging result indicates that second loading errors are more than or equal to
The target error, then selection matches with second loading errors in the database the feed rate and described
Worst error continues to be loaded, and returns to the actual mass step for obtaining sample-adding fine powder in real time.The present invention is loaded by automating
Control method carries out sample-adding processing to fine powder, improves work efficiency, and reduces cost of labor；Pass through the practical matter of fine powder
The difference adjustment feed rate of amount and aimed quality, improves fine powder sample-adding precision.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of fine powder sample adding device of the present invention；
Fig. 2 is the structural schematic diagram inside powder automatic sample case of the present invention；
Fig. 3 is the flow diagram of the fine powder loading methods of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the fine powder sample adding system of the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Work efficiency is high, precision is high and fine powder loading methods at low cost and is the object of the present invention is to provide a kind of
System.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the structural schematic diagram of fine powder sample adding device of the present invention, and Fig. 2 is inside powder automatic sample case of the present invention
Structural schematic diagram.As depicted in figs. 1 and 2, fine powder sample adding device provided by the invention include holder 100, vertical slide unit 101,
Compression bar 102, stepper motor 103, miniature DC motor 104, horizontal sliding table 105, powder automatic sample case 106, precision balance 107
With controller 108.
The holder 100 includes the second support of the first support of horizontal direction and vertical direction.
The vertical slide unit 101, is fixed by the first support, and vertical with the first support.
The compression bar 102 is moveably mounted on the vertical slide unit 101.
The stepper motor 103 includes the first stepper motor and the second stepper motor.The output of first stepper motor
End is connect by transmission mechanism with the vertical slide unit 101, for driving the vertical slide unit 101 to move down in vertical direction
It is dynamic.The output end of second stepper motor is connect by transmission mechanism with the powder automatic sample case 106, for driving
Powder automatic sample case 106 is stated to translate on the horizontal sliding table 105.
The output end of the miniature DC motor 104 is connect by transmission mechanism with the compression bar 102, described for driving
Compression bar 102 rotates vertically downward.
The horizontal sliding table 104 is fixed by the second support, and vertical with the second support, and positioned at described
The lower section of vertical slide unit 101.
The powder automatic sample case 106 is the babinet of open uncovered, is moveably mounted to the horizontal sliding table 105
On, including multiple powder automatic sample heads 200.The shape of the powder automatic sample head 200 is that upper port is bigger than lower port
Tubulose, for loading different sample-adding fine powders, the lower port of the powder automatic sample head 200 adds automatically across the powder
The bottom of sample case 106, when the compression bar 102 is rotated downward vertically to the inner core of the powder automatic sample head 200, the powder
Powder in automatic sample head 200 flows out, and the fine powder in each powder automatic sample head 200 is different, and translates institute
Powder automatic sample case 106 is stated, when the compression bar 102 is rotated downward vertically to the different powder automatic sample heads 200
Inner core, the powder outflow in the different powder automatic sample heads 200.
The precision balance 107 is located at the lower section of the horizontal sliding table 105, the practical matter for measuring sample-adding fine powder
Amount.
The controller 108 is connect with the precision balance 107, the actual mass for reading fine powder in real time.It is described
Controller 108 is also all connected with the stepper motor 103, the miniature DC motor 104；The controller 108 is for controlling
The rotary speed of the depression depths of the compression bar 102 and the compression bar.
The also internal database of the controller 108；The database includes multiple and different control parameter combinations and institute
State the corresponding sample-adding combination of control parameter combination；The each feed rate of the combination including fine powder that be loaded is missed with maximum
Difference；Each control parameter combination includes compression bar depression depths and compression bar rotary speed.It is combined in different control parameters
Under, the feed rate and loading errors (a kind of fine powder powder material need to only acquire once) of certain fine powder powder material are acquired, and store
In the database.
The quantity of the powder automatic sample head 200 is identical as the quantity of the powder sort of required sample-adding, and the powder is certainly
Dynamic feed head 200 is the feed head of Mettler Toledo Inc.'s production.
The precision balance 107 is the electronic balance XSE105DU of Mettler Toledo Inc.'s production.
The controller 108 is STM32F103 controllers.
Fig. 3 is the flow diagram of the fine powder loading methods of the embodiment of the present invention, as shown in figure 3, the embodiment of the present invention
The fine powder loading methods of offer are applied on Fig. 1 and fine powder sample adding device shown in Fig. 2, the fine powder loading methods packet
It includes：
Step 301：Obtain the desired value and target error of fine powder to be loaded.
Step 302：The sample-adding to match with the desired value of the fine powder to be loaded is chosen from the database
Speed and the worst error；Preferably, it is the fine powder to be loaded to choose the worst error from the database
The maximum sample-adding combination of feed rate described in sample-adding combination within the half of desired value.For example, setting is described to be added
The desired value of sample fine powder is A, and sample-adding of the worst error less than A/2 combines described in first choice selection sample-adding combination, and adds herein
Sample combination in selection feed rate it is maximum sample-adding be combined as finally be loaded combination, sample-adding final at this time combination include with it is described
The feed rate and the worst error that the desired value of fine powder to be loaded matches.
Step 303：The actual mass of sample-adding fine powder is obtained in real time.
Step 304：The first loading errors are calculated, and when first loading errors are the worst error, pause adds
Sample；First loading errors be the fine powder sample adding device work when, it is described sample-adding fine powder the actual mass with
The absolute value of the difference of the aimed quality.
Step 305：After the fine powder sample adding device is stopped completely, the institute of the sample-adding fine powder is obtained again
Actual mass is stated, and calculates the second loading errors；Second loading errors are that the fine powder sample adding device stops work completely
After work, the absolute value of the difference of the actual mass and the aimed quality of the sample-adding fine powder.The fine powder herein
Sample adding device is stopped completely when no longer instilling precision balance for fine powder, avoids the error caused by fine powder sticks.
Step 306：Judge whether second loading errors are less than the target error, obtains the first judging result.If
First judging result indicates that second loading errors are less than the target error, thens follow the steps 307.If described first
Judging result indicates that second loading errors are more than or equal to the target error, thens follow the steps 308.
Step 307：Stop sample-adding.
Step 308：The feed rate and institute that selection matches with second loading errors in the database
Worst error is stated, continues to be loaded, and returns to the actual mass step for obtaining sample-adding fine powder in real time.Preferably, from the data
Feed rate described in the sample-adding combination within the half that the worst error is second loading errors is chosen in library
Maximum sample-adding combination.Similarly, second loading errors are set as D, it is small that first choice chooses worst error described in sample-adding combination
It is combined in the sample-adding of D/2, and the maximum sample-adding of selection feed rate is combined as finally being loaded combination in sample-adding combination at this, at this time
Final sample-adding combination includes the feed rate to match with second loading errors and the worst error.
To achieve the above object, the embodiment of the present invention additionally provides a kind of fine powder sample adding system.
Fig. 4 is the structural schematic diagram of the fine powder sample adding system of the embodiment of the present invention, as shown in figure 4, the embodiment of the present invention
The fine powder sample adding system of offer fine powder sample adding system on Fig. 1 and fine powder sample adding device shown in Fig. 2 includes：
Desired value and target error acquisition module 401, the desired value for obtaining fine powder to be loaded and target error.
First chooses module 402, for choosing the desired value phase with the fine powder to be loaded from the database
The feed rate matched and the worst error.Preferably, it is described wait for choose the worst error from the database
It is loaded the maximum sample-adding combination of feed rate described in the sample-adding combination within the half of the desired value of fine powder.For example,
For the desired value of fine powder to be loaded described in setting as A, first choice chooses the sample-adding group that worst error described in sample-adding combination is less than A/2
It closes, and the maximum sample-adding of selection feed rate is combined as finally being loaded combination, sample-adding group final at this time in sample-adding combination at this
Conjunction includes the feed rate to match with the desired value of the fine powder to be loaded and the worst error.
Actual mass acquisition module 403, for obtaining the actual mass for being loaded fine powder in real time.
First loading errors computing module 404, for calculating the first loading errors, and when first loading errors are institute
When stating worst error, pause sample-adding；When first loading errors are that the fine powder sample adding device works, the sample-adding fine powder
The absolute value of the difference of the actual mass and the aimed quality at end.
Second loading errors computing module 405 obtains again for working as after the fine powder sample adding device is stopped completely
The actual mass of the sample-adding fine powder is taken, and calculates the second loading errors；Second loading errors are the fine powder
After last sample adding device is stopped completely, the actual mass for being loaded fine powder is absolute with the difference of the aimed quality
Value.
First judging result obtains module 406, for judging whether second loading errors are less than the target error,
Obtain the first judging result.
Stop sample-adding module 407, for indicating that second loading errors are less than the mesh when first judging result
When marking error, stop sample-adding.
Second chooses module 408, indicates that second loading errors are more than or wait for working as first judging result
When the target error, selection matches with second loading errors in the database the feed rate and institute
It states worst error to continue to be loaded, and returns to the actual mass step for obtaining sample-adding fine powder in real time.Preferably, from the database
Feed rate described in the middle sample-adding combination chosen within the half that the worst error is second loading errors is most
Big sample-adding combination.Similarly, second loading errors are set as D, first choice is chosen worst error described in sample-adding combination and is less than
The sample-adding of D/2 combines, and the maximum sample-adding of selection feed rate is combined as finally being loaded combination in sample-adding combination at this, at this time most
Whole sample-adding combination includes the feed rate to match with second loading errors and the worst error.
Use fine powder loading methods specific operation process provided by the invention for：
The vertical slide unit 101 vertically moves down under the drive of first stepper motor, and the compression bar 102 is in institute
It states and is rotated under the drive of miniature DC motor 104.
The powder automatic sample head on the horizontal sliding table 105 is arrived in the drive lower slider of second stepper motor
The underface of the compression bar 102.
The compression bar 102 is rotated downward vertically to the inner core of the powder automatic sample head 200, the powder automatic sample
Powder outflow in first 200.
Powder in the powder automatic sample head flow to the precision balance 107, and the precision balance 107 measures sample-adding
The actual mass of fine powder.
The controller 108 reads the actual mass of the feedback of the precision balance 107 in real time, with desired value and target error
It is compared, selects suitable feed rate and worst error, and according to described in the feed rate of selection and worst error control
The compression bar depression depths and compression bar rotary speed of compression bar 102 stop sample-adding after meeting required precision.
Specific embodiment is：The sample-adding desired value of this fine powder：500mg, required precision 0.2mg；According to sample-adding target
Value selects suitable control parameter combination, and as (5,300), worst error is about 20mg at this time.When being loaded onto 480mg
It waits, stops sample-adding.Deng complete stop when (when i.e. powder quality is constant), calculating the second loading errors D, about D
=11mg, at this time 11mg>0.2mg does not meet required precision 0.2mg.Into in next step, selects at this time and meet worst error and be less than
All sample-addings combination of 11/2mg is used as set E, then the maximum sample-adding combination of feed rate is chosen from set E, more than repetition
Step, until D<0.2, terminate sample-adding.
It is proved by a large number of experiments, based on generally need to only being recycled four times applied to loading methods provided in an embodiment of the present invention
Left and right can converge to set accuracy rating, greatly reduce loading time, while ensure that the essence of fine powder sample-adding
Degree
Under lab, material preparation process relies primarily on manpower and manual operations to realize.In order to prepare continuous component
Inorganic bulk, experimenter generally requires to expend considerable time and effort, not only waste of human resource, and human cost is high,
And efficiency is low, and it is error-prone.And loading methods provided by the invention and sample adding device are used, not only reduce the wave of human resources
Take, reduce human cost, reduce the error of experimenter's repetitive operation generation, also improves the efficiency and successfully of preparation
Rate is suitable for the preparation of batch material.This is of great significance to the research and development of new material.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
Principle and implementation of the present invention are described for specific case used herein, and above example is said
The bright method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (4)
1. a kind of fine powder loading methods, which is characterized in that the fine powder loading methods are applied on fine powder sample adding device；
The fine powder sample adding device includes holder, vertical slide unit, compression bar, stepper motor, miniature DC motor, horizontal sliding table, powder
Automatic sample case, precision balance and controller；The holder include horizontal direction first support and second of vertical direction
Frame；The vertical slide unit, is fixed by the first support, and vertical with the first support；The compression bar is movably pacified
On the vertical slide unit；The horizontal sliding table is fixed by the second support, and vertical with the second support, position
In the lower section of the vertical slide unit；The stepper motor includes the first stepper motor and the second stepper motor, first stepping
The output end of motor is connect by transmission mechanism with the vertical slide unit, for drive the vertical slide unit in vertical direction under
It is mobile；The output end of second stepper motor is connect by transmission mechanism with the powder automatic sample case, for driving
Powder automatic sample case is stated to translate on the horizontal sliding table；The output end of the miniature DC motor passes through transmission mechanism and institute
Compression bar connection is stated, for driving the compression bar to rotate vertically downward；The powder automatic sample case is the babinet of open uncovered；Institute
Precision balance is stated, the lower section of the horizontal sliding table is located at, the actual mass for measuring sample-adding fine powder；The controller and institute
Precision balance, the stepper motor, the miniature DC motor is stated to be all connected with；The controller is for controlling under the compression bar
Press the rotary speed of depth and the compression bar；The controller internal database；The database includes multiple and different control
Sample-adding combination corresponding to parameter combination and control parameter combination；Each sample-adding combination includes adding for fine powder
Sample speed and worst error；Each control parameter combination includes compression bar depression depths and compression bar rotary speed；It is described thin
Powder loading methods include：
Obtain the desired value and target error of fine powder to be loaded；
Choose from the database the feed rate to match with the desired value of the fine powder to be loaded and it is described most
Big error；
The actual mass of sample-adding fine powder is obtained in real time；
The first loading errors are calculated, and when first loading errors are the worst error, pause sample-adding；Described first adds
When sample error is that the fine powder sample adding device works, the actual mass and the aimed quality of the sample-adding fine powder
Absolute value of the difference；
After the fine powder sample adding device is stopped completely, the actual mass of the sample-adding fine powder is obtained again,
And calculate the second loading errors；It is described to add after second loading errors are stopped completely for the fine powder sample adding device
The absolute value of the difference of the actual mass and the aimed quality of sample fine powder；
Judge whether second loading errors are less than the target error, obtains the first judging result；
If first judging result indicates that second loading errors are less than the target error, stop being loaded；
If first judging result indicates that second loading errors are more than or equal to the target error, in the number
According to the feed rate and the worst error that selection matches with second loading errors in library, continue to be loaded, and return
Return the actual mass step for obtaining sample-adding fine powder in real time.
2. fine powder loading methods according to claim 1, which is characterized in that selection and the institute from the database
It states the feed rate that the desired value of fine powder to be loaded matches and the worst error specifically includes：
It chooses from the database described within the half for the desired value that the worst error is the fine powder to be loaded
The maximum sample-adding combination of feed rate described in sample-adding combination.
3. fine powder loading methods according to claim 1, which is characterized in that selection and the institute in the database
It states the feed rate that the second loading errors match and the worst error continues sample-adding and specifically includes：
The sample-adding combination within the half that the worst error is second loading errors is chosen from the database
Described in feed rate maximum sample-adding combination.
4. a kind of fine powder sample adding system, which is characterized in that the fine powder sample adding system is applied on fine powder sample adding device；
The fine powder sample adding device includes holder, vertical slide unit, compression bar, stepper motor, miniature DC motor, horizontal sliding table, powder
Automatic sample case, precision balance and controller；The holder include horizontal direction first support and second of vertical direction
Frame；The vertical slide unit, is fixed by the first support, and vertical with the first support；The compression bar is movably pacified
On the vertical slide unit；The horizontal sliding table is fixed by the second support, and vertical with the second support, position
In the lower section of the vertical slide unit；The stepper motor includes the first stepper motor and the second stepper motor, first stepping
The output end of motor is connect by transmission mechanism with the vertical slide unit, for drive the vertical slide unit in vertical direction under
It is mobile；The output end of second stepper motor is connect by transmission mechanism with the powder automatic sample case, for driving
Powder automatic sample case is stated to translate on the horizontal sliding table；The output end of the miniature DC motor passes through transmission mechanism and institute
Compression bar connection is stated, for driving the compression bar to rotate vertically downward；The powder automatic sample case is the babinet of open uncovered；Institute
Precision balance is stated, the lower section of the horizontal sliding table is located at, the actual mass for measuring sample-adding fine powder；The controller and institute
Precision balance, the stepper motor, the miniature DC motor is stated to be all connected with；The controller is for controlling under the compression bar
Press the rotary speed of depth and the compression bar；The controller internal database；The database includes multiple and different control
Sample-adding combination corresponding to parameter combination and control parameter combination；Each sample-adding combination includes adding for fine powder
Sample speed and worst error；Each control parameter combination includes compression bar depression depths and compression bar rotary speed；It is described thin
Powder sample adding system includes：
Desired value and target error acquisition module, the desired value for obtaining fine powder to be loaded and target error；
First chooses module, described in choosing match with the desired value of the fine powder to be loaded from the database
Feed rate and the worst error；
Actual mass acquisition module, for obtaining the actual mass for being loaded fine powder in real time；
First loading errors computing module, for calculating the first loading errors, and when first loading errors are the maximum
When error, pause sample-adding；When first loading errors are that the fine powder sample adding device works, the institute of the sample-adding fine powder
State the absolute value of the difference of actual mass and the aimed quality；
Second loading errors computing module, for working as after the fine powder sample adding device is stopped completely, obtain again described in
It is loaded the actual mass of fine powder, and calculates the second loading errors；Second loading errors are loaded for the fine powder
After device is stopped completely, the absolute value of the difference of the actual mass and the aimed quality of the sample-adding fine powder；
First judging result obtains module, for judging whether second loading errors are less than the target error, obtains the
One judging result；
Stop sample-adding module, for indicating that second loading errors are less than the target error when first judging result
When, stop sample-adding；
Second chooses module, for indicating that second loading errors are more than or equal to the mesh when first judging result
When marking error, selection matches with second loading errors in the database the feed rate and the maximum miss
Difference continues to be loaded, and returns to the actual mass step for obtaining sample-adding fine powder in real time.
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| CN108501443B (en) | 2019-04-30 |
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