CN107392386A - Laser cutting machine protection steel plate repairing route planing method based on Students ' Learning - Google Patents
Laser cutting machine protection steel plate repairing route planing method based on Students ' Learning Download PDFInfo
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- CN107392386A CN107392386A CN201710632147.6A CN201710632147A CN107392386A CN 107392386 A CN107392386 A CN 107392386A CN 201710632147 A CN201710632147 A CN 201710632147A CN 107392386 A CN107392386 A CN 107392386A
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
Laser cutting machine protection steel plate repairing route planing method of the present invention based on Students ' Learning belongs to flight-line maintenance and software algorithm technical field；This method, which is initially set up, hinders point coordinates, then the distance between any two wound point is calculated, build distance matrix, reinitialize Students ' Learning parameter, then knowledge point is used as using wound point, carry out knowledge point study, hereafter the distance of all wound point distance protection steel plate four edges circle is calculated, the most short path of distance is as incision path, and laser beam is set to enter from incision path, after the intersection point of incision path and cutting path is reached, cut according to cutting path, finally completely newly steel plate is protected to replace with one and cutting path shape identical the protection steel plate cut down according to cutting path；The present invention, which can realize, to be cut the part in shoulder guard only comprising wound point and replaces, is saved shoulder guard material, is reduced the maintenance cost of laser cutting machine.
Description
Technical field
The present invention based on Students ' Learning laser cutting machine protection steel plate repairing route planing method belong to flight-line maintenance and
Software algorithm technical field.
Background technology
The principle of laser cutting is：The laser launched from laser, through light path system, it is focused into swashing for high power density
Light beam.Laser beam is irradiated to workpiece surface, workpiece is reached fusing point or boiling point, while the gases at high pressure coaxial with light beam will melt
Or gasified metal is blown away.With the movement of light beam and workpiece relative position, material is finally set to form joint-cutting, so as to reach cutting
Purpose.
In order to prevent high energy laser beam from damaging other parts in addition to workpiece to be cut, resistance is mounted with the end of laser beam
Gear high energy laser beam continues the shoulder guard propagated.Laser beam can have brief stay when motion in beginning and end,
This will result in laser beam and energy accumulation carried out on shoulder guard, produces shoulder guard and hinders a little.
In order to keep the safeguard function of shoulder guard, it should which the region for including wound point is removed.But conventional method is
Shoulder guard is subjected to integral replacing, because shoulder guard material price is expensive, and this method wastes shoulder guard material very much,
Therefore the maintenance cost of laser cutting machine is improved.
The content of the invention
In view of the above-mentioned problems, the invention discloses a kind of laser cutting machine based on Students ' Learning to protect steel plate repairing route
Planing method, this method hinder point coordinates by determining, by wound point according to the most short principle line of tandem paths, are formed comprising all
Hinder the region of point, according to this path or region, you can the part in shoulder guard only comprising wound point is cut and replaced, is saved anti-
Steel plate materialses are protected, reduce the maintenance cost of laser cutting machine.
The object of the present invention is achieved like this：
Laser cutting machine protection steel plate repairing route planing method based on Students ' Learning, comprises the following steps：
Step a, establish and hinder point coordinates；
Step b, hinder point coordinates based on what step a was obtained, calculate the distance between any two wound point, build apart from square
Battle array；
Step c, student's learning parameter is initialized；Including：
Student's quantity m；
Knowledge inertia factor-alpha；
Knowledge heuristic factor-beta；
Knowledge memory factor ρ；
Knowledge matrix τ, the knowledge matrix share n × n element, and n is wound point quantity；
Term number initial value ns=1；
Term number final value ne；
Step d, using wound point as knowledge point, the Students ' Learning parameter initialized according to step c, knowledge point study is carried out；
Specially：Using term number final value as stopping criterion for iteration, the iteration since term number initial value, current in an iterative process
Phase, after k-th of student terminates i-th of knowledge point, the probability of j-th of knowledge point of study is：
Knowledge matrix renewal rule be：
Above formula is assignment statement, and the τ (i, j) on the equation left side is the i-th row jth column element in lower halves knowledge matrix τ, etc.
τ (i, j) on the right of formula is the i-th row jth column element in current term knowledge matrix τ, Δ τk(i, j) is k-th of student by i-th
Knowledge point learn to j-th knowledge point after knowledge accumulation；
Wherein, LkFor the summation of k-th of Students ' Learning knowledge point；
Each all knowledge points will have been learnt in term, after school work expires, the learning sequence of knowledge point has been obtained, according to
Habit order, planning department's cutting path；
Step e, the distance of all wound point distance protection steel plate four edges circle is calculated, the most short path of distance is as incision road
Footpath；
Step f, laser beam enters from incision path, after the intersection point of incision path and cutting path is reached, according to cutting
Cut in path；
Step g, it is the protection steel plate cut down according to cutting path is brand-new with cutting path shape identical with one
Steel plate is protected to replace.
The above-mentioned laser cutting machine protection steel plate repairing route planing method based on Students ' Learning, described distance matrix
Computational methods are：
Wherein, D (i, j) represents the i-th row jth column element in Distance matrix D, and wound point PiWith wound point PjThe distance between；
PiAnd P (x)i(y) wound point P is represented respectivelyiTransverse and longitudinal coordinate；PjAnd P (x)j(y) wound point P is represented respectivelyjTransverse and longitudinal coordinate.
The laser cutting machine protection steel plate repairing route planing method based on Students ' Learning is protected in laser cutting machine above
Application in steel plate maintenance.
Beneficial effect：
Firstth, the inventive method hinders point coordinates by determining, by proposing a kind of technological means of Students ' Learning, will hinder a little
According to the most short principle line of tandem paths, the region for including all wound points is formed, according to this path or region, you can steel will be protected
In plate only comprising wound point a part cut and replaces, save shoulder guard material, reduce be cut by laser machine maintenance into
This.
Secondth, in the methods of the invention, it is iterated with term, while take into account the inspiration of knowledge, accumulation of knowledge
With the memory and forgetting of knowledge, not only accumulated useful knowledge, and make useless knowledge by superseded so that this hair
Bright method, which almost can be iterated to accurately, most to be had on path.
3rd, student learns since any one knowledge point, from a knowledge point to the study of another knowledge point
And random, so not only path can be avoided to be absorbed in local optimum, and be advantageous to rapidly converge to optimal path.
Brief description of the drawings
Fig. 1 is the flow chart of laser cutting machine protection steel plate repairing route planing method of the present invention based on Students ' Learning.
Fig. 2 is the repairing route obtained by the inventive method.
Fig. 3 is simulation software panel sectional drawing.
Specific embodiment
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Specific embodiment one
The present embodiment is the laser cutting machine protection steel plate repairing route planing method embodiment based on Students ' Learning.
Laser cutting machine based on the Students ' Learning protection steel plate repairing route planing method of the present embodiment, flow chart is as schemed
Shown in 1, this method comprises the following steps：
Step a, establish and hinder point coordinates；
Step b, hinder point coordinates based on what step a was obtained, calculate the distance between any two wound point, build apart from square
Battle array；The computational methods of described distance matrix are：
Wherein, D (i, j) represents the i-th row jth column element in Distance matrix D, and wound point PiWith wound point PjThe distance between；
PiAnd P (x)i(y) wound point P is represented respectivelyiTransverse and longitudinal coordinate；PjAnd P (x)j(y) wound point P is represented respectivelyjTransverse and longitudinal coordinate；
Step c, student's learning parameter is initialized；Including：
Student's quantity m；
Knowledge inertia factor-alpha；
Knowledge heuristic factor-beta；
Knowledge memory factor ρ；
Knowledge matrix τ, the knowledge matrix share n × n element, and n is wound point quantity；
Term number initial value ns=1；
Term number final value ne；
Step d, using wound point as knowledge point, the Students ' Learning parameter initialized according to step c, knowledge point study is carried out；
Specially：Using term number final value as stopping criterion for iteration, the iteration since term number initial value, current in an iterative process
Phase, after k-th of student terminates i-th of knowledge point, the probability of j-th of knowledge point of study is：
Knowledge matrix renewal rule be：
Above formula is assignment statement, and the τ (i, j) on the equation left side is the i-th row jth column element in lower halves knowledge matrix τ, etc.
τ (i, j) on the right of formula is the i-th row jth column element in current term knowledge matrix τ, Δ τk(i, j) is k-th of student by i-th
Knowledge point learn to j-th knowledge point after knowledge accumulation；
Wherein, LkFor the summation of k-th of Students ' Learning knowledge point；
Each all knowledge points will have been learnt in term, after school work expires, the learning sequence of knowledge point has been obtained, according to
Habit order, planning department's cutting path；
Step e, the distance of all wound point distance protection steel plate four edges circle is calculated, the most short path of distance is as incision road
Footpath；
Step f, laser beam enters from incision path, after the intersection point of incision path and cutting path is reached, according to cutting
Cut in path；
Step g, it is the protection steel plate cut down according to cutting path is brand-new with cutting path shape identical with one
Steel plate is protected to replace.
Specific embodiment two
The present embodiment is the application implementation of the laser cutting machine protection steel plate repairing route planing method based on Students ' Learning
Example.
Laser cutting machine based on the Students ' Learning protection steel plate repairing route planing method of the present embodiment, with specific implementation
Example one is identical, for repairing laser cutting machine protection steel plate.
Specific embodiment three
The present embodiment is the laser cutting machine protection steel plate repairing route planing method embodiment based on Students ' Learning.
Laser cutting machine based on the Students ' Learning protection steel plate repairing route planing method of the present embodiment is specific with one group
Data instance, described data are hindered a little including 30 altogether, and the coordinate of this 30 wound points is：
Hinder point coordinates table
Based on point coordinates is hindered in table, emulated on Matlab 2012b softwares, simulated program record is as follows：
Resulting repairing route as shown in Fig. 2 cutting path is shown on Matlab 2012b panels, the panel
Sectional drawing is as shown in Figure 3, it can be seen that the time that inventive algorithm is run on Matlab 2012b is 28.505738s.
Claims (3)
1. the laser cutting machine protection steel plate repairing route planing method based on Students ' Learning, it is characterised in that including following step
Suddenly：
Step a, establish and hinder point coordinates；
Step b, hinder point coordinates based on what step a was obtained, calculate the distance between any two wound point, build distance matrix；
Step c, student's learning parameter is initialized；Including：
Student's quantity m；
Knowledge inertia factor-alpha；
Knowledge heuristic factor-beta；
Knowledge memory factor ρ；
Knowledge matrix τ, the knowledge matrix share n × n element, and n is wound point quantity；
Term number initial value ns=1；
Term number final value ne；
Step d, using wound point as knowledge point, the Students ' Learning parameter initialized according to step c, knowledge point study is carried out；Specifically
For：Using term number final value as stopping criterion for iteration, the iteration since term number initial value, current term in an iterative process,
After k-th of student terminates i-th of knowledge point, the probability of j-th of knowledge point of study is：
Knowledge matrix renewal rule be：
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Knowledge accumulation after o'clock learning to j-th knowledge point；
Wherein, LkFor the summation of k-th of Students ' Learning knowledge point；
Each all knowledge points will have been learnt in term, after school work expires, obtained the learning sequence of knowledge point, it is suitable according to learning
Sequence, planning department's cutting path；
Step e, the distance of all wound point distance protection steel plate four edges circle is calculated, the most short path of distance is as incision path；
Step f, laser beam enters from incision path, after the intersection point of incision path and cutting path is reached, according to cutting path
Cut；
Step g, the protection steel plate cut down according to cutting path is completely newly protected with one and cutting path shape identical
Steel plate is replaced.
2. the laser cutting machine protection steel plate repairing route planing method according to claim 1 based on Students ' Learning, its
It is characterised by, the computational methods of described distance matrix are：
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Wherein, D (i, j) represents the i-th row jth column element in Distance matrix D, and wound point PiWith wound point PjThe distance between；Pi
And P (x)i(y) wound point P is represented respectivelyiTransverse and longitudinal coordinate；PjAnd P (x)j(y) wound point P is represented respectivelyjTransverse and longitudinal coordinate.
3. a kind of claim 1 and 2 laser cutting machine protection steel plate repairing route planing method based on Students ' Learning exists
Application in laser cutting machine protection steel plate maintenance.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100174435A1 (en) * | 2009-01-07 | 2010-07-08 | Samsung Electronics Co., Ltd. | Path planning apparatus of robot and method thereof |
| CN102023611A (en) * | 2010-12-02 | 2011-04-20 | 广东工业大学 | Seeking route plan optimizing method of laser cutting machine |
-
2017
- 2017-07-28 CN CN201710632147.6A patent/CN107392386A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100174435A1 (en) * | 2009-01-07 | 2010-07-08 | Samsung Electronics Co., Ltd. | Path planning apparatus of robot and method thereof |
| CN102023611A (en) * | 2010-12-02 | 2011-04-20 | 广东工业大学 | Seeking route plan optimizing method of laser cutting machine |
Non-Patent Citations (3)
| Title |
|---|
| 刘会霞 等: "钣金件数控激光切割割嘴路径的优化", 《计算机辅助设计与图形学学报》 * |
| 曲晶 等: "基于蚁群算法的PCB孔加工路径优化", 《机电工程》 * |
| 潘海鸿 等: "钣金激光切割加工CAD/CAM软件的孔群加工路径优化算法", 《组合机床与自动化加工技术》 * |
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Application publication date: 20171124 |