JP2864586B2 - Design procedure support device - Google Patents

Description

Description of the Invention [Object of the Invention] (Industrial application field) The present invention relates to a design procedure supporting apparatus for semi-automatically supporting a design procedure using a computer.
The present invention relates to a design procedure support device that can calculate an evaluation value that can accurately evaluate a design result of a target index according to the character of a design target.

(Prior Art) In a conventional design procedure support device using a computer, determination of a design result is often performed by binary evaluation such as achievement or non-achievement of a target value. It is also conceivable that the difference between the target value and the design value is quantified by relative comparison with the target value. It is relatively difficult to evaluate the design results.

More specifically, even if both the maximum speed and the fuel consumption rate, which are target indices of the vehicle, achieve the target achievement of, for example, 95%, the characteristics of the vehicle to be designed, for example, the vehicle emphasizes high speed. Depending on the nature of the design object, such as whether it is a luxury sports car or a family car that emphasizes economic efficiency, which target index should be emphasized differs, and the maximum speed and fuel consumption target achievement degree are the same95 %, But if the vehicle is a luxury sports car, the top speed rating will be more severe than the fuel consumption rating,
Conversely, in the case of a family car, the evaluation value of the fuel consumption rate is stricter than the evaluation value of the maximum speed. That is,
When designing a high-end sports car, even if the degree of achievement of the fuel consumption rate target is somewhat poor, emphasis should be placed on achieving the goal of maximum speed, and in the case of a family car, the opposite evaluation will be made.

(Problems to be Solved by the Invention) When trying to evaluate between the target indices according to the classification name of the design object by the conventional method, all the evaluation methods must be stored procedurally for each classification. In addition, it is extremely difficult to construct, and it is necessary to rewrite the program for changes in design information, introduction of new design methods, changes in the classification method of design objects, etc. There is a problem that can not be.

The present invention has been made in view of the above, and an object of the present invention is to provide a design procedure support device that can accurately evaluate a design result of a target index according to the characteristics of a design target. is there.

[Configuration of the invention]

(Means for Solving the Problems) In order to achieve the above object, as shown in FIG. 1, a design procedure supporting apparatus according to the present invention includes information necessary for design and input information necessary for obtaining the information. The information including the related information and the relational expression are combined as the heading information and the sub-information, respectively, and the input information in the sub-information of each combination is combined with the heading information and the sub-information which is composed of the heading information of another combination. An information storage unit that stores a plurality of combinations in a hierarchical structure, target index information indicating that heading information of the combination information is a target index, and a target value of the target index in association with the combination information; A target index storage unit 3 for specifying the desired index information as the target index information, and a sub-index in combination with the index information as the target index specified by the specifying unit. The information storage means retrieves from the information storage means all the heading information of other combinations constituting the input information in the information, and further sequentially retrieves all the heading information of another combination constituting the input information of the other combination from the information storage means. Searching means 7 for searching and calculating a data value for the specified heading information from the searched information and the relational expression; and a data value for the heading information calculated by the searching means as a target value for the heading information. , A target achievement degree calculating means 9 for calculating a target achievement degree, a classification name setting means 11 for classifying a design object based on its attributes and characteristics and setting a classification name, and a classification name setting means. Important diopter storage means 13 for storing the diopter for each target index for each set classification name
And an evaluation value calculating means 15 for calculating an evaluation value in consideration of a classification name from the goal achievement degree calculated by the goal achievement degree calculating means and the important visibility degree.

(Operation) In the design procedure support device of the present invention, a design object is classified according to its attribute and character, a classification name is set, an important degree of visibility for each target index is stored for each classification name, and a target index target is stored. The evaluation value in consideration of the classification name is calculated from the target achievement degree and the importance degree for the value.

(Example) Hereinafter, an example of the present invention is described using a drawing.

FIG. 2 is a block diagram showing a configuration of a design procedure support device according to one embodiment of the present invention. The design procedure support device shown in FIG. 1 is a keyboard 21 for inputting and designating desired information and other information necessary for design, which is output data desired by a user of the device, and calculates output data. Display device that displays data, parameters, calculated output data, and the like that must be determined by the user further input during the design support operation to be performed.
23, and knowledge of the design procedure, specifically, sub-information consisting of data values necessary for the design, related information, calculation formulas as value obtaining means, and heading information such as design information derived from the sub-information. An information storage unit that stores a plurality of hierarchical structures and stores a classification name designed by classifying design objects based on their attributes, characteristics, and the like, and an important degree of visibility for each target index for each classification name. 25 and desired information input from the keyboard 21, such as heading information as design information, is searched from the information storage unit 25, and the input information corresponding to the heading information is obtained. When it is determined and the heading information of another combination is determined, the information having a combination relationship is used as the heading information using the undetermined information until all the undetermined information is determined. Obtain retrieved from 憶部 25, also inputs information the obtained is a undetermined, yet when it is not already in the heading information of the other combinations, keyboard
21 and activates the value obtaining means described in all the input information and sub-information thus obtained, calculates the input desired output data value, and outputs the design information. And a knowledge control unit 27 that determines the value of.

FIG. 3 shows a frame composed of a combination of heading information and sub-information stored in the information storage unit 25.
As shown in the figure, the heading information stored in combination with the information storage unit 25 and the sub information corresponding to the heading information are shown according to the description of a frame.

FIG. 3 shows an example in which the heading information is “A”, and the sub-information for the heading information A is input (input information), equation (calculation formula), target (target value), catego
ry (personality information), achievement (target achievement / comparison evaluation value), importance (importance = weighting factor at the time of evaluation), eval
uation (evaluation value) and the like are defined. As input (input information) in the sub information, three input parameters B, C, and D are set, and the values b and C of the three parameters B, C, and D are set.
This shows that the value a of the index information A can be obtained by substituting c, d into an equation (calculation formula): a = f1 (b, c, d). Note that this is a case where the relationship between the parameters is an arithmetic expression, but the same can be described in the case of a table lookup, for example.

The target (target value) is equal to or greater than Va, and the category (character information) indicates that the heading information A is a target index used for evaluating the design result. Also achievement
(Target achievement) indicates a comparison evaluation value between the target value and the design value, importance (importance) is a weighting factor at the time of evaluation of the heading information, and evaluation (evaluation value) indicates the target achievement and the importance. Value calculated from the degrees.
The values of achievement, importance, and evaluation have not yet been determined and are nil.

The information configured as described above and stored in the information storage unit 25 as a frame including a combination of the heading information and the sub information is obtained from the input parameters and the calculation formula in the sub information in which each heading information has the combination relation. However, this input parameter is used as heading information of a frame constituting another combination, and the heading information and the input parameter are set so that the heading information of the other combination is an input parameter of another combination. Each piece of information composed of a combination with the included sub-information has a hierarchical structure. With such a configuration, the design procedure can be supported in an arbitrary order, and the flexibility and efficiency can be improved.

FIG. 4 shows the relationship between design information configured in such a hierarchical structure. In the figure, design information A is information B,
C and D, information B is obtained from information E and F, information C is obtained from information G and H, and information D is obtained from information H and I.

FIG. 5 is a diagram showing an example of the degree of importance of the target index according to the nature of the design object, that is, whether the vehicle is a sporty vehicle or a family sedan in the case of a vehicle. As shown in the figure, in the case of sporty vehicles, a weighting factor of 2.5 is given to 0-400m starting acceleration, 40-60km / h section acceleration, maximum speed, etc. related to power performance. Is given a weighting factor of 0.5. In addition, in the case of the family sedan, it is shown that a weight coefficient of 3.0 points is given to the fuel consumption, and a weight coefficient of 0.3 points is given to the 0-400 m starting acceleration and the maximum speed. When the classification of the design object is set, these weighting factors are entered in the column of importance (importance) of the frame.

Next, the operation will be described with reference to the flowchart shown in FIG.

First, a classification name (design concept) is determined based on the characteristics and the like of the vehicle to be designed (step 110).
That is, the classification name of the vehicle as shown in FIG. 5 is displayed on the display device 23, and the character of the vehicle to be designed is determined by the designer's selection. At this time, the weighting factor which is the importance for each target index shown in FIG.
Entered in rtance (importance) column.

Then, at this point, the user selects an operation to be performed next (step 120). This includes:
There are three types: (1) target value setting, (2) input value setting, and (3) value calculation, from which the operation to be performed next is selected. Note that incidental operations such as referring to related information can be actually selected.

First, when input value setting is selected as an operation, the process proceeds to step 130, and selects which parameter input value is to be set. Assuming that the parameter I has been selected, the user inputs an input value for the selected parameter (step 140). Then, enter the value entered by the user in the importance column of frame I corresponding to the selected parameter (step
150), and return to step 120.

Next, when the target value setting is selected, step 160
To select a parameter target value to be set. Assuming that the parameter K is selected, the user inputs a target value for the selected parameter K (step 170). This input target value is written in the target (target value) column of the frame corresponding to the selected parameter K together with the magnitude relation (above, below, etc.) (step 18).
0). Then, it is checked whether or not the value of the frame K has been determined (step 190). If undetermined, the process returns to step 120. If it is determined, the process proceeds to step 230 and thereafter, and evaluation is started as described later.

Next, a case where the value calculation is selected will be described. In this case, the process proceeds to step 200, and a parameter value to be calculated is selected. If the parameter J is selected, a procedure for obtaining a value for the parameter J is started (step 210). The procedure for obtaining the value of this parameter will be described later in detail with reference to FIG.

Then, it is checked whether or not the target value of this frame J has been set (step 220). If not, the process returns to step 120. If the target value has been set, the process proceeds to step 230 and thereafter to start evaluation.

In the evaluation after step 230, the target index value V
Is obtained, the target achievement degree T for the target value Vt described in the frame is calculated for each target index from the following formula.

T = sign table (target) ^* (Vt−V) / Vt Here, sign table is a function for determining a sign as shown below.

In other words, when the value is equal to or more than the target value Vt, a positive sign is given to V not less than Vt, and a negative sign is given to V less than Vt.

The difference between the target value obtained in step 230 and the design prediction value is the target achievement degree T.
Fill in the achieve column (step 240).
In this description, a simple relative comparison is used, but another evaluation method such as Fuzzy may be used.

In the Importance (importance) column of frame J, the step
Since the importance degree is described based on the classification name set in 110, the evaluation value of the parameter J is calculated by, for example, obtaining the product of the importance degree and the target achievement calculated in step 230. (Step 250). This calculated evaluation value is evaluated for frame J (evaluation value).
Fill in the fields (step 260) and return to step 120.

Next, the method of obtaining the value of the parameter performed in step 210 will be described with reference to the flowchart of FIG.

First, a frame X corresponding to the parameter X whose value is to be calculated is searched (step 310). Then, it is checked whether or not there is a value in the output column of the searched frame X (step 320). If the value is present,
Terminates without performing the following procedures. If the value does not exist, it is checked whether it is the lowest parameter (step 330). If it is the lowest parameter,
Ask the user to enter a value (step 340),
Proceed to step 390.

On the other hand, if it is determined in step 330 that the parameter is not the lowest layer parameter, all the parameters described in the input column of the frame X are searched and substituted into the set L (step 350). Then, one element parameter is taken out from the set L, passed recursively to this routine, and steps 360 and 370 are repeated until the values of all the element parameters of the set L are obtained. When all the values of the element parameters of the set L are obtained, the calculation can be executed. Therefore, a calculation means such as an equation (calculation formula) described in "if needed" of the frame X is executed (step 380), and the result is obtained. The output value of the frame is written in the output column of the frame (step 390), and the routine for obtaining the value of the parameter ends.

As described above, it is possible to calculate an evaluation value that enables comparison with another target index in consideration of the degree of achievement of the target and the characteristics of the design target, which are obtained by relative comparison of the target values for each target index.

FIG. 8 shows the target indices rearranged in order of the evaluation value in the case of a sporty car. In the figure, a negative evaluation value indicates that the target has not been achieved, and the larger the absolute value, the worse the evaluation. If the evaluation value is positive, the target value has been achieved, and the larger the absolute value, the greater the margin. In terms of target achievement, which is a simple relative comparison with the target value, the 60km / h fixed fuel efficiency is -9.6%, which is the worst result, but in the sporty car design, this 60km / h fixed fuel efficiency evaluation value Is -4.8, and it can be understood that the road noise having the target achievement of -4.3% has an evaluation value of -7.74, which is worse. Based on such evaluation results, the designer who is the user considers the evaluation reflecting the character of the design target,
The most appropriate design change means can be considered.

Further, by calculating, for example, the sum of these evaluation values, it becomes possible to perform a comprehensive evaluation of the design pattern.
In this case, the sum may be a simple sum, or the sum may be a sum only for negative evaluation values.

〔The invention's effect〕

As described above, according to the present invention, a design object is classified by its attribute and character, a classification name is set, the degree of importance for each target index is stored for each classification name, and the target index target is stored. Since the evaluation value considering the classification name is calculated from the degree of achievement of the target and the degree of importance with respect to the value, the design result of the target index can be evaluated according to the character of the design target, and the design between different target indexes can be evaluated. The results can be directly evaluated. In addition, it is possible to accurately grasp the design change procedure from which target index to improve the design result, and to compare and evaluate which pattern is a desirable design among multiple design patterns. You can also.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram corresponding to the claims of the present invention, FIG. 2 is a block diagram showing a configuration of a design procedure supporting apparatus according to an embodiment of the present invention, and FIG. FIG. 4 is a diagram showing a frame composed of heading information and sub-information used in the procedure support device, FIG. 4 is a diagram showing a hierarchical structure of knowledge information of the design procedure support device of FIG. 2, and FIG. 6 and 7 are flowcharts showing the operation of the design procedure support device of FIG. 1, and FIG. 8 is a diagram showing a sporty car design prediction result in consideration of the character of the vehicle. It is a figure showing the evaluation result evaluated. 21 ... keyboard, 23 ... display device, 25 ... information storage unit, 27 ... knowledge control unit.

Claims (1)

(57) [Claims] An information necessary for design and input information necessary for obtaining the information, information including relational information and a relational expression are combined as heading information and sub-information, respectively. An information storage means for storing a combination of the heading information and sub-information, in which the input information is composed of heading information of another combination, in a plurality of hierarchical structures, and the heading information of the combination information being a target index Target index information indicating the target index information and a target value of the target index in association with the combination information; a specifying means for specifying desired heading information as the target index information; All of the heading information of other combinations constituting the input information in the sub-information in the combination with the heading information which is the set target index are searched from the information storage means. Search means for sequentially retrieving, from the information storage means, all the heading information of another combination constituting the input information of another combination, and calculating a data value for the specified heading information from the searched information and a relational expression And a target achievement degree calculating means for comparing a data value for the heading information calculated by the search means with a target value for the heading information, and calculating a target achievement degree.
Classification name setting means for classifying a design object based on its attributes and characteristics to set a classification name, and an important view for storing an important degree for each target index for each classification name set by the classification name setting means A design procedure support device comprising: a degree storage means; and an evaluation value calculation means for calculating an evaluation value in consideration of a classification name from the goal achievement degree calculated by the goal achievement degree calculation means and the important visibility degree. .