CN104181859A - Design method and device for improvement on numerically-controlled machine tool based on cognitive gains - Google Patents

Abstract

The invention discloses a method and device for improved design of CNC machine tools based on cognition gain. The improved design requirements of CNC machine tools are input, and the information units included in the improved design requirements of CNC machine tools are identified according to the information unit marking rules, and the requirements for realizing the improved design requirements are obtained. According to the completion record of the design task, the cognition weight coefficient is constructed, the contribution of the information unit in the information requirement to the realization of the design requirement is calculated, and the cognition gain of the information in the information base is obtained. Arrange the information in descending order, and use the recommended information to complete the improved design of the CNC machine tool; the present invention provides highly targeted and accurate information for the improved design of the CNC machine tool, which can greatly reduce the information search time and information screening time, and obtain the most usable information conveniently and efficiently. The best CNC machine tool improvement design reference information.

Description

A kind of numerically-controlled machine based on cognition gain improves method for designing and device

Technical field

The present invention's design relates to a kind of numerically-controlled machine and improves method for designing, and particularly a kind of numerically-controlled machine based on cognition gain improves method for designing and device.

Background technology

Numerically-controlled machine improves and designs is a complicated Innovative Design Process, need to various information support improve design, improves in design process and needs to search in time the design knowledge that acquisition is relevant, assists and improves design.Along with the continuous increase of information, it is more and more longer that numerically-controlled machine improves the information searching time that design spends in information management system, is even difficult to find meet the information of improving designing requirement.Also quantitatively accurate Calculation information, to realizing the help that improves designing requirement, causes effectively number of support controlled machine improvement design of information simultaneously.Therefore the numerically-controlled machine that, need to study a kind of convenient and efficient for cognition gain improves method for designing.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, provide a kind of numerically-controlled machine based on cognition gain to improve method for designing and device.Input numerically-controlled machine improves designing requirement, according to message unit marking convention, identifies numerically-controlled machine and improves the message unit that designing requirement comprises, and obtains to realize and improves the required information requirement of designing requirement; According to design objective, complete record, construct cognitive weight coefficient, in computing information demand, message unit is to realizing the contribution amount of improving designing requirement, and try to achieve the cognitive amount of gain of information in information bank, by cognitive gain value, by information descending sort, utilize the information of recommending to complete numerically-controlled machine and improve design.

The numerically-controlled machine that the present invention realizes based on cognition gain improves method for designing, comprises the following steps:

Step 1), according to the user's request of numerically-controlled machine and market study, determine and input the improvement designing requirement t of numerically-controlled machine ₁, t ₂..., t _p..., t _n, according to message unit marking convention, identify and improve the message unit u that designing requirement comprises ₁, u ₂..., u _j..., u _m;

Step 2) according to numerically-controlled machine, improve design objective and complete record, construct cognitive weight coefficient (ε ₁, ε ₂, ε ₃);

Step 3) calculate and establish the contribution amount of message unit to realization improvement designing requirement in information requirement;

Step 4) computing information is to realizing the cognitive amount of gain of improving designing requirement;

The value of step 5) pressing cognitive amount of gain, by the descending sort of candidate designs knowledge, is utilized the information of recommending to complete numerically-controlled machine and is improved design.

Described step 2) be specially: the numerically-controlled machine improvement design objective completing records quantity and is less than 10, is defined as the improvement design objective of poor information, cognitive weight coefficient ε ₁=0.4, ε ₂=0.2, ε ₃=0.4; The numerically-controlled machine improvement design objective completing records quantity and is greater than 10, is defined as informative improvement design objective, cognitive weight coefficient ε ₁=0.2, ε ₂=0.4, ε ₃=0.4.

Described step 3) be specially: information is divided into two classes: " c ₁, to realizing, improve designing requirement t _phelpful " and " c ₂, to realizing, improve designing requirement t _pwithout helping ", computing information unit u _jto realize improving designing requirement t _pcontribution amount CIG (u _j), wherein

The improvement design objective of poor information, (formula 1)

Informative improvement design objective, (formula 2)

$\mathrm{IG}\left(u_j\right)=-\underset{q=1}{\overset{2}{\mathrm{\Σ}}}P\left(c_q\right)\log P\left(c_q\right)+P\left(u_j\right)\underset{q=1}{\overset{2}{\mathrm{\Σ}}}P\left(c_q\right|u_j)\log P\left(c_q\right|u_j)+P\left(\stackrel{\‾}{u_j}\right)\underset{q=1}{\overset{2}{\mathrm{\Σ}}}P\left(c_q\right|\stackrel{\‾}{u_j})\log P\left(c_q\right|\stackrel{\‾}{u_j})$ (formula 3)

Wherein, IG (u _j) be message unit u _jinformation gain, for message unit u _jgain corrected parameter, δ is for comprising coefficient, for convergence factor, ζ is uniformity ratio.

Described step 4) be specially: calculate for improving designing requirement t _pinformation requirement, information k _icognitive yield value be information k _ithe design objective t comprising _pthe summation of contribution amount of message unit of information requirement,

$\mathrm{Score}(k_i,t_p)=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{CIG}\left(u_j\right)*f(k_i,u_j)$ (formula 7)

Wherein, f (k _i, u _j) be function of state, information k _iinclusion information unit u _j, f (k _i, u _j)=1, otherwise f (k _i, u _j)=0.

According to information entropy axiom, the cognitive yield value of information, selects the information of cognitive yield value maximum to provide numerically-controlled machine to improve design as design reference.

Described computing information unit u _jto realize improving designing requirement t _pcontribution amount CIG (u _j), be specially:

Comprise coefficient δ, if the improvement designing requirement quantity that contains message unit is more, the contribution amount that message unit improves designing requirement to realization is larger,

$\mathrm{\δ}=f_p\left(u_j\right)/\sqrt{\underset{j=1}{\overset{m}{\mathrm{\Σ}}}\underset{p=1}{\overset{N}{\mathrm{\Σ}}}{\left(f_q\left(u_j\right)\right)}^2}$ (formula 4)

Convergence factor if the improvement designing requirement that contains message unit is gathered under same type, the contribution amount that message unit improves designing requirement to realization is larger,

(formula 5)

Uniformity ratio ζ, if the improvement designing requirement that contains message unit is evenly distributed in design objective set, the contribution amount that message unit improves designing requirement to realization is larger,

$\mathrm{\ζ}=1-\sqrt{\frac{1}{N_p-1}\underset{l=1}{\overset{N_p}{\mathrm{\Σ}}}{(f_{\mathrm{pl}}\left(u_j\right)-\frac{1}{N_p}\underset{l=1}{\overset{N_p}{\mathrm{\Σ}}}{f}_{\mathrm{pl}}\left(u_j\right))}^2}/\frac{1}{N_p}\underset{l=1}{\overset{N_p}{\mathrm{\Σ}}}{f}_{\mathrm{pl}}\left(u_j\right)$ (formula 6)

Numerically-controlled machine based on cognition gain improves a design apparatus, comprises memory module, mark module, computing module, pushing module;

Memory module, for storage information, message unit and message unit marking convention, and sends respectively mark module by information teller's marking convention;

Mark module, improves designing requirement for receiving message unit marking convention and numerically-controlled machine, and the message unit that numerically-controlled machine is improved to designing requirement carries out mark, obtains message unit, sends to computing module;

Computing module, for receiving the message unit of mark, the contribution amount of message unit to improvement designing requirement in computing information demand, and the cognitive amount of gain of computing information, send to display module by the descending sort according to cognition gain value of information;

Display module, for reception information and show information, as design reference, completes numerically-controlled machine and improves design.

Described computing module is specially: difference calculated gains corrected parameter , computing information unit u _jto realize improving designing requirement t _pcontribution amount CIG (u _j), acquired information unit u _jcognitive amount of gain; Select the information large class relevant to improving designing requirement, the cognitive yield value Score (k of computing information _i, t _p).

Described pushing module is specially: the information that front 5 information or the cognitive yield value of cognitive yield value descending sort are greater than to 1.0, and by the form demonstration message header of list.

The invention has the beneficial effects as follows, by calculating numerically-controlled machine, improve the contribution amount of message unit to realization improvement designing requirement in designing requirement, the cognition gain of acquired information, utilizes the cognition gain of information to represent that information realization improves effective help degree of designing requirement.Based on cognitive yield value, can generate information list targetedly according to specialized information structure, the information preference of existing improvement design, as improving design reference, effectively number of support controlled machine improves design.It is simply efficient that this numerically-controlled machine improves method for designing, can greatly reduce the time of the information of searching, and the most useful information that numerically-controlled machine improves designing requirement that realizes is provided, and the auxiliary high efficiency numerically-controlled machine that completes improves design.

Accompanying drawing explanation

Fig. 1 is the inventive method flow chart of steps;

Fig. 2 is apparatus of the present invention structural drawing.

Concrete implementation

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Fig. 1 is that the corresponding a kind of numerically-controlled machine based on cognition gain of the present invention improves design flow diagram.

1), according to the user's request of numerically-controlled machine and market study, determine that certain model work of numerical control machine turret systems improves designing requirement: t ₁, Overall Power Consumption reduces by 3%.

2) according to message unit marking convention, identify " t ₁, Overall Power Consumption reduces by 3% " and the message unit that comprises, obtain to realize and improve the required information requirement U of designing requirement, its result is as shown in table 1.

3) according to numerically-controlled machine, improve design objective and complete record, be defined as informative improvement design objective, construct cognitive weight coefficient ε=[0.2,0.4,0.4].

4) computing information unit u _jinformation benefit amount IG (u _j), its result is as shown in table 2.

5) computing information unit u _jgain corrected parameter , its result is as shown in table 3.

6) computing information unit u _jto realize improving designing requirement " t ₁, Overall Power Consumption reduces by 3% " contribution amount CIG (u _j), its result is as shown in table 4.

7) in computing information storehouse with " t ₁, Overall Power Consumption reduces by 3% " and relevant information k _icognition gain Score (k _i, t _p), its result is as shown in table 5.

Table 1 " t ₁, Overall Power Consumption reduces by 3% " and numerically-controlled machine improves the message unit that designing requirement comprises

Sequence number	Message unit	Sequence number	Message unit
				u 1	Turntable	u 9	Gear train
u 2	Circular guideway	u 10	Torque motor
				u 3	Power consumption	u 11	Lightweight material
u 4	Grinding force	u 12	Numerically-controlled machine
				u 5	Cutting force	u 13	Reinforcing rib design
u 6	Power of motor and torque	u 14	Improve design
				u 7	Lubricated	u 15	Performance evaluation
u 8	Low friction pair	?	?

The information gain value of table 2 message unit

Sequence number	IG(u j)	Sequence number	IG(u j)
				u 1	0.09633	u 9	0.06123
u 2	0.09781	u 10	0.09491
				u 3	0.08089	u 11	0.09522
u 4	0.09890	u 12	0.07467
				u 5	0.09733	u 13	0.07300
u 6	0.08967	u 14	0.07467
				u 7	0.09633	u 15	0.08816
u 8	0.08428	?	?

The gain corrected parameter of table 3 message unit

Table 4 message unit u _jcognitive yield value

Sequence number	CIG(u j)	Sequence number	CIG(u j)
				u 1	0.02237	u 9	0.01514
u 2	0.02445	u 10	0.02096
				u 3	0.02330	u 11	0.02382
u 4	0.02273	u 12	0.01680
				u 5	0.02988	u 13	0.02403
u 6	0.02972	u 14	0.02564
				u 7	0.03632	u 15	0.03424
u 8	0.02348	?	?

Table 5 number of support controlled machine improves the information list of design

Sequence number	Information	Score(k i,t 1)
			k 1	Hollow variable cross-section steel plates structural design	1.9394
k 2	The performance evaluation of PTFE teflon circular guideway soft strip material	1.6758
			k 3	The laminating feasibility analysis of circular guideway	1.1528
k 4	The performance evaluation of high-strength light Steel material	1.1163
			k 5	Straight drive torque motor improves design	1.0875

Fig. 2 is that the corresponding a kind of numerically-controlled machine based on cognition gain of the present invention improves design apparatus structural drawing.

Device comprises: memory module, for storage information, message unit and message unit marking convention, and sends respectively mark module by information teller's marking convention; Mark module, improves designing requirement for receiving message unit marking convention and numerically-controlled machine, and the message unit that numerically-controlled machine is improved to designing requirement carries out mark, obtains message unit, sends to computing module; Computing module, for receiving the message unit of mark, the contribution amount of message unit to improvement designing requirement in computing information demand, and the cognitive amount of gain of computing information, send to display module by the descending sort according to cognition gain value of information; Display module, for reception information and show information, as design reference, completes numerically-controlled machine and improves design.

Claims (9)

1. the numerically-controlled machine based on cognition gain improves method for designing, input numerically-controlled machine improves designing requirement, according to message unit marking convention, identify numerically-controlled machine and improve the message unit that designing requirement comprises, obtain to realize and improve the required information requirement of designing requirement; According to design objective, complete record, construct cognitive weight coefficient, in computing information demand, message unit is to realizing the contribution amount of improving designing requirement, and try to achieve the cognitive amount of gain of information in information bank, by cognitive gain value, by information descending sort, utilize the information of recommending to complete numerically-controlled machine and improve design.Specifically comprise the following steps:

Step 1), according to the user's request of numerically-controlled machine and market study, determine and input the improvement designing requirement t of numerically-controlled machine ₁, t ₂..., t _p..., t _n, according to message unit marking convention, identify and improve the message unit u that designing requirement comprises ₁, u ₂..., u _j..., u _m;

Step 2) according to numerically-controlled machine, improve design objective and complete record, construct cognitive weight coefficient (ε ₁, ε ₂, ε ₃);

Step 3) calculate and establish the contribution amount of message unit to realization improvement designing requirement in information requirement;

Step 4) computing information is to realizing the cognitive amount of gain of improving designing requirement;

The value of step 5) pressing cognitive amount of gain, by the descending sort of candidate designs knowledge, is utilized the information of recommending to complete numerically-controlled machine and is improved design.

2. a kind of numerically-controlled machine based on cognition gain according to claim 1 improves method for designing, it is characterized in that, described step 2) be specially: the numerically-controlled machine improvement design objective completing records quantity and is less than 10, is defined as the improvement design objective of poor information, cognitive weight coefficient ε ₁=0.4, ε ₂=0.2, ε ₃=0.4; The numerically-controlled machine improvement design objective completing records quantity and is greater than 10, is defined as informative improvement design objective, cognitive weight coefficient ε ₁=0.2, ε ₂=0.4, ε ₃=0.4.

3. a kind of numerically-controlled machine based on cognition gain according to claim 1 improves method for designing, it is characterized in that described step 3) be specially: information is divided into two classes: " c ₁, to realizing, improve designing requirement t _phelpful " and " c ₂, to realizing, improve designing requirement t _pwithout helping ", computing information unit u _jto realize improving designing requirement t _pcontribution amount CIG (u _j), wherein

The improvement design objective of poor information, (formula 1)

Informative improvement design objective, (formula 2)

$\mathrm{IG}\left(u_j\right)=-\underset{q=1}{\overset{2}{\mathrm{\Σ}}}P\left(c_q\right)\log P\left(c_q\right)+P\left(u_j\right)\underset{q=1}{\overset{2}{\mathrm{\Σ}}}P\left(c_q\right|u_j)\log P\left(c_q\right|u_j)+P\left(\stackrel{\‾}{u_j}\right)\underset{q=1}{\overset{2}{\mathrm{\Σ}}}P\left(c_q\right|\stackrel{\‾}{u_j})\log P\left(c_q\right|\stackrel{\‾}{u_j})$ (formula 3)

Wherein, IG (u _j) be message unit u _jinformation gain, for message unit u _jgain corrected parameter, δ is for comprising coefficient, for convergence factor, ζ is uniformity ratio.

4. a kind of numerically-controlled machine based on cognition gain according to claim 1 improves method for designing, it is characterized in that described step 4) be specially: calculate for improving designing requirement t _pinformation requirement, information k _icognitive yield value be information k _ithe design objective t comprising _pthe summation of contribution amount of message unit of information requirement,

$\mathrm{Score}(k_i,t_p)=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}\mathrm{CIG}\left(u_j\right)*f(k_i,u_j)$ (formula 7)

Wherein, f (k _i, u _j) be function of state, information k _iinclusion information unit u _j, f (k _i, u _j)=1, otherwise f (k _i, u _j)=0.

5. a kind of numerically-controlled machine based on cognition gain according to claim 1 improves method for designing, it is characterized in that, according to information entropy axiom, the cognitive yield value of information, selects the information of cognitive yield value maximum to provide numerically-controlled machine to improve design as design reference.

6. computing information according to claim 3 unit u _jto realize improving designing requirement t _pcontribution amount CIG (u _j), it is characterized in that:

Comprise coefficient δ, if the improvement designing requirement quantity that contains message unit is more, the contribution amount that message unit improves designing requirement to realization is larger,

$\mathrm{\δ}=f_p\left(u_j\right)/\sqrt{\underset{j=1}{\overset{m}{\mathrm{\Σ}}}\underset{p=1}{\overset{N}{\mathrm{\Σ}}}{\left(f_q\left(u_j\right)\right)}^2}$ (formula 4)

Convergence factor if the improvement designing requirement that contains message unit is gathered under same type, the contribution amount that message unit improves designing requirement to realization is larger,

(formula 5)

Uniformity ratio ζ, if the improvement designing requirement that contains message unit is evenly distributed in design objective set, the contribution amount that message unit improves designing requirement to realization is larger,

$\mathrm{\ζ}=1-\sqrt{\frac{1}{N_p-1}\underset{l=1}{\overset{N_p}{\mathrm{\Σ}}}{(f_{\mathrm{pl}}\left(u_j\right)-\frac{1}{N_p}\underset{l=1}{\overset{N_p}{\mathrm{\Σ}}}{f}_{\mathrm{pl}}\left(u_j\right))}^2}/\frac{1}{N_p}\underset{l=1}{\overset{N_p}{\mathrm{\Σ}}}{f}_{\mathrm{pl}}\left(u_j\right)$ (formula 6).

7. the numerically-controlled machine based on cognition gain improves a design apparatus, it is characterized in that: comprise memory module, mark module, computing module, display module;

Described memory module, for storage information, message unit and message unit marking convention, and sends respectively mark module by information teller's marking convention;

Described mark module, improves designing requirement for receiving message unit marking convention and numerically-controlled machine, and the message unit that numerically-controlled machine is improved to designing requirement carries out mark, obtains message unit, sends to computing module;

Described computing module, for receiving the message unit of mark, the contribution amount of message unit to improvement designing requirement in computing information demand, and the cognitive amount of gain of computing information, send to display module by the descending sort according to cognition gain value of information;

Described display module, for reception information and show information, as design reference, completes numerically-controlled machine and improves design.

8. the numerically-controlled machine based on cognition gain improves a design apparatus, it is characterized in that: described computing module is specially: difference calculated gains corrected parameter , computing information unit u _jto realize improving designing requirement t _pcontribution amount CIG (u _j), acquired information unit u _jcognitive amount of gain; Select the information large class relevant to improving designing requirement, the cognitive yield value Score (k of computing information _i, t _p).

9. the numerically-controlled machine based on cognition gain improves design apparatus, it is characterized in that: described pushing module is specially: the information that front 5 information or the cognitive yield value of cognitive yield value descending sort are greater than to 1.0, by the form demonstration message header of list.