CN106096109A - A kind of centrifugal broadcast application dish work layout method - Google Patents
A kind of centrifugal broadcast application dish work layout method Download PDFInfo
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- CN106096109A CN106096109A CN201610392299.9A CN201610392299A CN106096109A CN 106096109 A CN106096109 A CN 106096109A CN 201610392299 A CN201610392299 A CN 201610392299A CN 106096109 A CN106096109 A CN 106096109A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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Abstract
The invention discloses centrifugal broadcast application dish work layout method, belong to talents for agri-mechanization field.The present invention, by the running parameters such as the centrifugal broadcast application dish speed of travel, centrifugal pan blade number, centrifugal pan blade angle of eccentricity are optimized combination, on the one hand can improve uniformity and the stability of broadcast application；On the other hand reducing broadcast application cost, improve broadcast application efficiency, broadcast application job area is relatively wide, can be applicable to the broadcast application operation of any one crop in Camellia sinensis, Semen Maydis, apple tree, pear tree, Semen Tritici aestivi, peach tree, orange tree.
Description
Technical field
The invention belongs to agricultural operation equipment field, be specifically related to centrifugal broadcast application dish work layout technology.
Background technology
Field fertilization is one of operating type important in tea garden management, and fertilizer machinery is as a kind of important tea place fertilising
Mode, the field management for efficient science provides guarantee.Its service behaviour directly affects the work quality of broadcast application, is related to
It is distributed precision in fertilizer is expert at and in the degree of depth, and quality and the yield of Folium Camelliae sinensis can be affected.
Mechanized application is remarkably improved efficiency and reduces labor intensity, but lacks special fertilizing equipment in current tea place,
Artificially applying fertilizer is as traditional fertilization mode, and labor intensity is big, and manual operation efficiency is relatively low, causes a large amount of labour force in bond.
Cone disk type broadcast application mechanism is probed into by Dong Xiangqian etc., and it is spiral parabola that this device is centrifuged the blade shape of broadcast application dish, profit
With test, the broadcast application performance of cone disk type broadcast application mechanism is analyzed, establishes the mechanical model of fertiliser granulates, result of the test table
Bright when centrifugal pan rotating speed is 600rpm, when feed angle is 75 °, the uniformity of broadcast application is preferable；Wu Hui etc. are in order to probe into broadcast application mistake
The impact on broadcast application uniformity of the centrifugal pan different rotating speeds in journey, utilizes disc type fertilizer distributor model to test, test ties
Fruit understands: the attenuating of centrifugal pan rotating speed can cause broadcast application uniformity to lower, and effective fabric width of its broadcast application is also with centrifugal pan
The reduction of rotating speed and reduce；Patterson etc. have carried out preliminary grinding to the motion model of fertiliser granulates on centrifugal broadcast application dish
Study carefully, for later deeper into research specify direction.
Although at home and abroad there being a lot of research, also there is a lot of ripe product, but most large-scale fertilizer machinery is due to it
Volume, broadcast application wide cut the reason product such as restriction can not narrow row away from tea place in operation.Although there being minority small fertilizer spreading machine tool
Tea place fertilising can be applied to, but due to reasons such as during machinery operation, Performance comparision are single, labor intensity is big, working performance is low,
Can not realize applying fertilizer quickly and efficiently.
Summary of the invention
It is an object of the invention to provide a kind of centrifugal broadcast application dish work layout method, to improve the uniform of broadcast application
Property and stability, reduce broadcast application cost, improve broadcast application efficiency.
In order to solve above technical problem, the present invention designs and implements and with the speed of travel, blade number and angle of eccentricity is
The Three factors-levels quadratic regression orthogonal rotational center combination design test of factor, by the analysis to test data, sets up
Relation equation between broadcast application effect and described each factor, and gained equation is optimized solves.It is concrete that the present invention uses
Technical scheme is as follows:
A kind of method of centrifugal broadcast application dish work layout, it is characterised in that: by centrifugal broadcast application dish is walked
Speed (the abbreviation speed of travel), centrifugal pan blade number (being called for short blade number), centrifugal pan blade angle of eccentricity (are called for short offset angle
Degree) etc. running parameter be optimized combination, with obtain improve broadcast application uniformity effect；
During described centrifugal broadcast application dish broadcast application, the combination of optimum running parameter is as follows: the speed of travel is 0.61m/s, blade number
Be 5, angle of eccentricity be 15.72 °.
The method of described a kind of centrifugal broadcast application dish work layout, it is characterised in that described parameter optimization method leads to
Cross following steps to realize:
Step one, designs and implements the Three factors-levels two with the speed of travel, blade number and angle of eccentricity as factor
Secondary Orthogonal Regression central composite rotatable design is tested.
Step 2, according to the test data of step one, the relation equation set up between broadcast application effect and described each factor is:
Y=14.43-12.8X1+3.23X2-1.01X3-3.12X1X2-1.37X2X3+10.8X1 2+1.63X2 2+4.21X3 2
Wherein, X1、X2、X3It is respectively blade number, angle of eccentricity and the speed of travel；Y is distribution variation coefficient, that is spreads
Fertilizer efficiency fruit.
Step 3, is optimized the equation in described step 2 and solves, with broadcast application effect as object function, in each factor
Seeking optimum under the conditions of range constraint, when obtaining centrifugal broadcast application dish broadcast application, the combination of optimum running parameter is: blade number is 5,
Angle of eccentricity is 15.72 °, the speed of travel is 0.61m/s.
The method of described a kind of centrifugal broadcast application dish work layout, it is characterised in that: described centrifugal broadcast application dish
Can be applicable to the broadcast application operation of any one crop in Camellia sinensis, Semen Maydis, apple tree, pear tree, Semen Tritici aestivi, peach tree, orange tree.
The method of described a kind of centrifugal broadcast application dish work layout, it is characterised in that: centrifugal broadcast application dish straight
Footpath is 240mm.
The present invention has beneficial effect.The present invention by centrifugal broadcast application dish running parameter is optimized, on the one hand energy
Enough improve uniformity and the stability of broadcast application；On the other hand reducing broadcast application cost, improve broadcast application efficiency, broadcast application job area is relatively
Extensively, can be applicable to the broadcast application operation of any one crop in Camellia sinensis, Semen Maydis, apple tree, pear tree, Semen Tritici aestivi, peach tree, orange tree.
Accompanying drawing explanation
Fig. 1 is the assay device cultivation and fertilization test platform figure of the present invention；
Fig. 2 is the fertilizer collection device schematic diagram of the present invention；
Fig. 3 is the center combination parameter optimization result schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings with embodiment, technical scheme is described in further details.
With carbamide for test fertilizer, the speed of travel, angle of eccentricity and blade number are influence factor, fertilizer in each disposable box
The distribution variation coefficient of granule number, as the evaluation index of broadcast application effect, uses the orthogonal rotation of quadratic regression of Three factors-levels
Turn center combination design test method, on cultivation and fertilization testing stand in carry out broadcast application effect test.Cultivation and fertilization testing stand is such as
Shown in Fig. 1, fertiliser granulates disposable box is as shown in Figure 2.Wherein, three levels of the speed of travel be respectively 0.4m/s, 0.6m/s,
0.8m/s, centrifugal pan blade angle change level is 0,30,60, and blade number is adjusted to 2,4,6 respectively.
Experimental factor code levels is as shown in table 1, X1、X2、X3It is respectively blade number, angle of eccentricity and the speed of travel
Encoded radio, in each disposable box, the distribution variation coefficient of fertiliser granulates number is designated as y.
Table 1 factor level coding schedule
Use Design-Expert8.06 to be combined EXPERIMENTAL DESIGN, add up the fertiliser granulates in each disposable box respectively
Number, and add up its distribution variation coefficient and be shown in Table 2 as result of the test, testing program and result of the test.
Table 2 testing program and result
Above result of the test is carried out variance analysis and regression analysis, sets up the pass between distribution variation coefficient and each factor
Being model, the variance analysis of test is as shown in table 3.
Table 3 variance analysis
From the variance analysis of table 3, the adjusted coefficient of determination R of this model2=0.9926；Regression coefficient test result is also
Show regression equation highly significant；Statistic F=239.55, P<0.0001, lose and intend checking P>0.05 mistake plan property notable, explanation
Simulation value and regression equation result are coincide good, model preferably characterize distribution variation coefficient and blade number, angle of eccentricity,
The relation of the speed of travel, can be used for the prediction to distribution variation coefficient.
In a model, X1、X2、X3、X1X2、X2X3、X1 2、X2 2、X3 2P value be respectively less than 0.05, its impact on model is described
Significantly；Wherein, X1、X2、X1X2、X1 2、X3 2P value be respectively less than 0.01, illustrate that this factor is the most notable on the impact of regression model；
X1X3P value be 0.6734, more than 0.05, illustrate blade number, the speed of travel reciprocal action notable on the impact of model,
Regression equation is not considered.
The distribution variation coefficient y finally given with the quadratic regression equation of each influence factor's encoded radio is:
Y=14.43-12.8X1+3.23X2-1.01X3-3.12X1X2-1.37X2X3+10.8X1 2+1.63X2 2+4.21X3 2
The size description of the absolute coefficient of regression equation this factor power to model prediction result capability of influence.?
In regression equation, X1The absolute value of coefficient is 12.8, X2The absolute value of coefficient is 3.23, X3The absolute value of coefficient is 1.01.Thus
Understanding, the most each factor for the size order that affects of distribution variation coefficient y is: X1、X2、X3。
Based on above regression equation, utilize the center combination response surface design design (Central of Design-Expert
Composite Design, is called for short CCD), carry out parameter optimization.With distribution variation coefficient as object function, at each factor range
Constraints under, seek its minima.Here constraints is: blade number is 2～6, and angle of eccentricity is 0～60 °,
The speed of travel is 0.4～0.8m/s, and distribution variation index variation scope is 0～100%.Optimum results is as it is shown on figure 3, rectangle frame
Region representation optimizes restriction range, optimizes the result after the flag labelling point in region is optimization, after optimizing as seen from the figure
Result is: blade number is 5, angle of eccentricity is 15.72 °, the speed of travel is 0.61m/s, and now distribution variation coefficient reaches
Little value, is 10.30%.
For verifying the parameter optimization result of distribution variation coefficient regression equation, step tea place, spring tea field in Danyang, Jiangsu Province
Inside carry out 10 groups of field broadcast application tests, respectively under optimum running parameter Regression model theory predictive value, optimum running parameter
Distribution variation coefficient measured value and be not optimised the distribution variation coefficient results of front former centrifugal broadcast application device and carry out statistical analysis.
Table 4 is field checking test statistics result, as shown in Table 4, under optimum working parameter, distribution variation coefficient pre-
Measured value and measured value are the least, i.e. fertiliser granulates distribution ratio is more uniform；The actual average value of distribution variation coefficient is 11.35%,
Mean predicted value is 10.30%, and its average relative error is 10.15%, and maximum relative error is 22.14%.Before and after optimization
Distribution variation index variation is obvious, and the measured value of the distribution variation coefficient being not optimised front broadcast application device is 26.65%, optimizes
The measured value of rear distribution variation coefficient is 10.15%, and broadcast application uniformity has had bigger lifting, illustrates that effect of optimization is preferable.
Table 4 field test results is added up
%
Claims (6)
1. a centrifugal broadcast application dish work layout method, it is characterised in that: by the centrifugal broadcast application dish speed of travel
I.e. (i.e. blade number, the centrifugal pan i.e. angle of eccentricity of blade angle of eccentricity carries out optimum work for the speed of travel, centrifugal pan blade number
Parameter combines, to obtain the effect improving broadcast application uniformity.
One the most according to claim 1 centrifugal broadcast application dish work layout method, it is characterised in that described parameter
Optimum organization is realized by following steps:
Step one, designs and implements the Three factors-levels secondary returning with the speed of travel, blade number and angle of eccentricity as factor
Friendship central composite rotatable design of reforming is tested；
Step 2, according to the data of test described in step one, sets up the relation equation between broadcast application effect and described each factor
Step 3, is optimized described equation and solves, with broadcast application effect as object function, under each factor range constraints
Seek optimum, obtain optimum running parameter combination during centrifugal broadcast application dish broadcast application.
One the most according to claim 1 centrifugal broadcast application dish work layout method, it is characterised in that described relation
Equation is
Y=14.43-12.8X1+3.23X2-1.01X3-3.12X1X2-1.37X2X3+10.8X1 2+1.63X2 2+4.21X3 2
Wherein, X1、X2、X3It is respectively blade number, angle of eccentricity and the speed of travel；Y is distribution variation coefficient, that is broadcast application effect
Really.
One the most according to claim 1 centrifugal broadcast application dish work layout method, it is characterised in that described centrifugal
During formula broadcast application dish broadcast application, optimum running parameter is combined as: the speed of travel is 0.61m/s, blade number is 5, angle of eccentricity is
15.72°。
One the most according to claim 1 centrifugal broadcast application dish work layout method, it is characterised in that: described centrifugal
Formula broadcast application dish can apply to the broadcast application of any one crop in Camellia sinensis, Semen Maydis, apple tree, pear tree, Semen Tritici aestivi, peach tree, orange tree.
One the most according to claim 1 centrifugal broadcast application dish work layout method, it is characterised in that: centrifugal spread
A diameter of 240mm of fertile dish.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103988625A (en) * | 2014-05-25 | 2014-08-20 | 张晓港 | Granular fertilizer application device |
| WO2015192273A1 (en) * | 2014-06-19 | 2015-12-23 | 国家电网公司 | Self-adaptive modeling apparatus for three-phase alternating-current electric arc furnace, and simulation algorithm therefor |
| CN105453783A (en) * | 2016-01-20 | 2016-04-06 | 钟国平 | Centrifugal farmland fertilizer applicator |
-
2016
- 2016-06-03 CN CN201610392299.9A patent/CN106096109A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103988625A (en) * | 2014-05-25 | 2014-08-20 | 张晓港 | Granular fertilizer application device |
| WO2015192273A1 (en) * | 2014-06-19 | 2015-12-23 | 国家电网公司 | Self-adaptive modeling apparatus for three-phase alternating-current electric arc furnace, and simulation algorithm therefor |
| CN105453783A (en) * | 2016-01-20 | 2016-04-06 | 钟国平 | Centrifugal farmland fertilizer applicator |
Non-Patent Citations (1)
| Title |
|---|
| 胡永光等: "茶园施肥机离心撒肥过程仿真与参数优化", 《农业机械学报》 * |
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