JP2014089530A - Model analysis support program and model analysis support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a model analysis support program and a model analysis support device for supporting analysis by a user by displaying a hierarchical structure to be derived from an inter-element dependency extracted from a simulation model.SOLUTION: A dependency information acquisition part 110 acquires each element and dependency information. A dependency updating part 120 updates dependency as follows. A deletion element designation part 121 designates a connection element having only connection information as a designation element as a deletion object. A dependency application part 122 applies the dependency between a processing element on an upstream side of the designation element and a processing element on a downstream side of the designation element. A designation element deletion part 123 deletes the designation element. Then, a path structure deriving part 130 derives the path structure of a path designated by a user.

Description

  The present invention relates to a model analysis support program and a model analysis support apparatus. More specifically, the present invention relates to a model analysis support program and a model analysis support device that support a user to analyze a simulation model.

  In a simulation model in which a large number of processes are complicatedly entangled, it is preferable to reduce re-execution of processes. This is because model analysis becomes easier and development efficiency improves. A Design Structure Matrix (DSM) may be used to optimize the process.

  In the design structure matrix (DSM), dependency relationship information between elements is expressed in a matrix format. When there is a dependency between elements, a numerical value other than 0 is entered in the off-diagonal component of the design structure matrix (DSM). Various techniques have been developed to optimize this design structure matrix (DSM). Patent Document 1 discloses a product development process support system that reduces the repetitive work of the development process by rearranging the development process by calculation using a design structure matrix (DSM). This makes it possible to design a process with less process re-execution.

JP 2007-109073 A

  However, even if the process design is more efficient by computation, the scale of the simulation model may be too large for the user to grasp the overall picture. In addition, the process design rearranged by calculation may not always be optimal. There are also cases where a user wants to handle a plurality of special processes as a group. As described above, in order to perform process design reflecting the design philosophy by the user, it is preferable to support the user so that the dependency relationship between elements, the hierarchical relationship, and the like can be grasped.

  The present invention has been made to solve the above-described problems of the prior art. In other words, the problem is that a model analysis support program and a model analysis support device aiming to support the analysis by the user by displaying the hierarchical structure derived from the dependency relationship between the elements extracted from the simulation model. Is to provide.

  The model analysis support apparatus according to the first aspect uses a design structure matrix that expresses dependency relationship information between a plurality of elements. There are at least two types of elements: a processing element having a process to be executed and a connection element having only connection information for connecting the processing elements without having a process to be executed. The model analysis support device updates a dependency relationship information acquisition unit that acquires processing elements, connection elements, and dependency information between these elements, and a dependency relationship between the elements acquired by the dependency relationship information acquisition unit. A dependency relationship update unit; and a design structure matrix display unit for displaying the dependency relationship between the elements updated by the dependency relationship update unit on the display unit as a design structure matrix. Then, the dependency relationship update unit is between the deletion element designating unit that designates the connection element as a deletion target as the designated element, and the processing element that is located upstream from the designated element and the processing element that is located downstream from the designated element. A dependency relationship adding unit that newly adds a dependency relationship; and a specified element deleting unit that deletes the specified element after the dependency relationship is added by the dependency relationship providing unit.

  The model analysis support apparatus can delete a connection element from the acquired elements and can add a new dependency relationship. Therefore, a design structure matrix (DSM) excluding unnecessary connection elements can be displayed.

  The model analysis support apparatus according to the second aspect includes a selection element display unit that displays a plurality of processing elements acquired by the dependency relationship information acquisition unit on the display unit, and a plurality of processes displayed on the display unit by the selection element display unit Specify by the user whether to select the selected element reception unit that receives the processing element selected by the user from among the elements as the reference element, and the route that is upstream from the reference element or the route that is downstream from the reference element. A search route receiving unit that receives as a designated route, and a route structure derivation unit that derives a route structure of the designated route from the reference element. Thereby, the path structure from the reference element can be derived.

  In the model analysis support device according to the third aspect, the route structure deriving unit, when the designated route received by the search route receiving unit is an upstream route, the distance from the reference element and the processing element upstream from the reference element and In addition to deriving the number of hierarchies and the number of branch points, when the specified route accepted by the search route acceptance unit is a downstream route, the distance from the reference element, the number of hierarchies, and the number of branch points are derived for the downstream processing element from the reference element. To do.

  The model analysis support apparatus according to the fourth aspect includes a hierarchical structure display unit that displays the distance derived by the route structure deriving unit on the horizontal axis and the number of hierarchies derived by the route structure deriving unit on the vertical axis. Have The hierarchical structure can be displayed as a graph.

  The model analysis support apparatus according to the fifth aspect includes a branch structure display unit that displays the distance derived by the route structure deriving unit on the horizontal axis and the number of branch points derived by the route structure deriving unit on the vertical axis on the display unit. Have The branch structure can be displayed as a graph.

  The model analysis support program according to the sixth aspect is for causing a computer to execute as a model analysis support apparatus using a design structure matrix that expresses dependency relationship information between a plurality of elements. There are at least two types of elements: a processing element having a process to be executed and a connection element having only connection information for connecting the processing elements without having a process to be executed. This program is a dependency relationship acquisition function that acquires processing elements, connection elements, and dependency information between these elements, and a dependency relationship that updates the dependency relationship between elements acquired by the dependency information acquisition function An update function and a design structure matrix display function for displaying a dependency relationship between elements updated by the dependency relationship update function as a design structure matrix on the display unit are realized. Then, the dependency relationship update function is between the deletion element designation function that designates the connection element as a deletion target in the designated element, and the processing element that is located upstream from the designated element and the processing element that is located downstream from the designated element. A dependency granting function for newly giving a dependency relationship and a specified element deleting function for deleting a specified element after the dependency relationship is given by the dependency granting function are realized.

  The model analysis support program according to the seventh aspect includes a selection element display function for displaying a plurality of processing elements acquired by the dependency relationship information acquisition function on the display unit, and a plurality of processes displayed on the display unit by the selection element display function. Specify by the user whether to search for a selection element reception function that accepts a processing element selected by the user from among the elements as a reference element, and a route that is upstream of the reference element or a route that is downstream of the reference element This is to realize a search route acceptance function that is accepted as a designated route and a route structure derivation function that derives a route structure of a designated route from a reference element.

  According to the present invention, there is provided a model analysis support program and a model analysis support device that support analysis by a user by displaying a hierarchical structure or the like derived from a dependency relationship between elements extracted from a simulation model. Has been.

It is a figure which illustrates the block diagram used as the basis of the block diagram information handled with the model analysis assistance apparatus which concerns on embodiment. It is a schematic block diagram which shows the structure of the hardware of the model analysis assistance apparatus which concerns on embodiment. It is a block diagram for demonstrating the structure of the control part of the model analysis assistance apparatus which concerns on embodiment. It is a figure which illustrates the design structure matrix (Design Structure Matrix) processed with the model analysis assistance apparatus which concerns on embodiment. It is a block diagram which shows the hierarchy below the block diagram of FIG. It is a block diagram which shows a mode that the block diagram of FIG. 1 and FIG. 5 was connected. It is a block diagram which shows the state which deleted the hierarchy element from the block diagram of FIG. It is a block diagram which illustrates the case where a guidance element is used. It is a block diagram which shows the case where the virtual line L7 is drawn in FIG. It is a block diagram which illustrates the case where connection is not drawn between processing elements. FIG. 11 is a block diagram showing a case where temporary connections L8 and L9 are drawn in FIG. It is a figure which shows the case where a dependency relationship is provided. It is a block diagram which illustrates the hierarchy D3. It is the figure which illustrated the graph of the hierarchical structure. It is the figure which illustrated the graph of the branch structure. It is a flowchart which shows the flow which a control part performs.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings.

(First embodiment)
A first embodiment will be described. The model analysis support apparatus of the first embodiment is for performing optimization and examination of a simulation model based on block diagram information of a block diagram output by Simulink (registered trademark). That is, the software (Simulink (registered trademark)) outputs a block diagram and accompanying block diagram information. Then, the model analysis support apparatus acquires the output information and supports the analysis / examination of the simulation model. The model analysis support program is for realizing a function for that purpose.

1. Block Diagram FIG. 1 shows an example of a block diagram output by Simulink (registered trademark). As shown in FIG. 1, in the block diagram, elements (1010, 1020, 1100, etc.) and connections (L1, L2, L3, etc.) connecting the elements are drawn. There are at least two types of elements: a processing element having a process to be executed and a connection element having only connection information for connecting the processing elements without having a process to be executed. The connection line L1 is a connection line that connects the processing element 1010 and the processing element 1300.

  Connection L1 is indicated by an arrow. This connection L1 indicates that information (including numerical values, character strings, and other information; the same applies hereinafter) output from the processing element 1010 has been passed to the processing element 1300. Accordingly, processing element 1300 is dependent on processing element 1010. Here, the processing element 1010 is referred to as a dependency source of the processing element 1300, and the processing element 1300 is referred to as a dependency destination of the processing element 1010.

  FIG. 1 shows a hierarchy D1, a hierarchy D2, and a hierarchy D3. The hierarchy D2 and the hierarchy D3 are lower than the hierarchy D1. Conversely, the hierarchy D1 is a hierarchy above the hierarchy D2 and the hierarchy D2. If all the processing elements are expressed in one plane, it becomes very complicated. Therefore, in Simulink (registered trademark), for convenience, one or more hierarchies can be created. Therefore, data output from Simulink (registered trademark) generally extends to a plurality of layers.

  As described above, the block diagram includes a plurality of processing elements and connection information that represents the dependency between these processing elements. Here, in view of a certain processing element, the direction of the dependence source (the source of the arrow) is assumed to be upstream. The direction of the dependence destination (point of arrow) is assumed to be downstream from the viewpoint of a certain processing element. This concept of upstream and downstream holds even across layers.

  As shown in FIG. 1, the processing elements are processed from the upstream side (left side in the figure) to the downstream side (right side in the figure). However, as indicated by L11, there is an arrow from the downstream side toward the upstream side. Therefore, the processing element 1100 and the processing element 1300 depend on the processing element 1430. As described above, there may be a “return” in which the upstream processing element receives the processing result of the downstream processing element. This return processing must be appropriately managed from the viewpoint of readability and simulation execution test.

  Here, the information outputted from Simulink (registered trademark) is passed the coordinates of each processing element and the information of the connection. In addition, information such as processing and calculation specifically performed by each processing element is also passed. The model analysis support apparatus according to the present embodiment can support optimization of a simulation model and analysis / examination of a processing element by a user using at least a part of the transferred information.

2. Model Analysis Support Device The model analysis support device 1 according to the present embodiment uses a design structure matrix (DSM) that expresses dependency relationship information between a plurality of elements output from Simulink (registered trademark) to analyze and analyze a simulation model. This is to support optimization. FIG. 2 shows the hardware configuration of the model analysis support apparatus 1 of this embodiment. The model analysis support device 1 includes a processing device 10, an input unit 20, and a display unit 30. The processing device 10 specifically performs various processes of the model analysis support device 1. The input unit 20 is for receiving input from the user. Alternatively, an output result from another computer may be accepted. An example is a keyboard. The display unit 30 is for displaying the results of executing various processes by the processing apparatus 10. For example, a display is mentioned.

  The processing device 10 includes a control unit 100 and a nonvolatile memory 200. The control unit 100 performs various controls. The control unit 100 includes a CPU (C1) and a memory M1. The control unit 100 performs various controls by using the CPUC1 and the memory M1. The non-volatile memory 200 stores a program P1. The program P1 is a model analysis support program for causing a computer to realize the model analysis support device 1 as described later.

3. Control Unit FIG. 3 is a block diagram for explaining each unit that performs various controls in the control unit 100. Each unit of the control unit 100 functions by using at least a part of the CPUC1 and at least a part of the memory M1.

  The control unit 100 includes a dependency relationship information acquisition unit 110, a dependency relationship update unit 120, a path structure derivation unit 130, a display control unit 140, and an input reception unit 150. The control unit 100 also has other control units (not shown).

  The dependency relationship information acquisition unit 110 has a dependency relationship information acquisition function for acquiring information related to a block diagram output from Simulink (registered trademark). That is, a processing element, a connection element, and dependency information between these elements are acquired. In addition, the coordinates of the processing elements and the specific processing contents thereof are also acquired.

  The dependency relationship update unit 120 updates the dependency relationship between the elements acquired by the dependency relationship information acquisition unit 110. That is, the dependency relationship update unit 120 deletes connection elements that are not necessary for analyzing the hierarchical structure, and provides a dependency relationship when no dependency relationship is given between elements inherited from Simulink (registered trademark). It has a dependency update function for doing this.

  The dependency relationship updating unit 120 includes a deletion element specifying unit 121, a dependency relationship providing unit 122, and a specified element deleting unit 123. The deletion element designation unit 121 has a deletion element designation function for designating a connection element as a designation to be designated as a designated element. The dependency relationship assigning unit 122 has a dependency relationship between a processing element immediately upstream from the specified element specified by the deleted element specifying unit 121 and a processing element immediately downstream of the specified element specified by the deleted element specifying unit 121. It has a dependency grant function that grants. Moreover, it is also for granting a dependency relationship between elements to which no dependency relationship is given. The specified element deletion unit 123 has a specified element deletion function for deleting the specified element after the dependency is given.

  The display control unit 140 is for causing the display unit 30 to display processing results and the like processed by the control unit 100. The display control unit 140 includes a design structure matrix display unit 141, a selection element display unit 142, a hierarchical structure display unit 143, and a branch structure display unit 144. The design structure matrix display unit 141 has a design structure matrix display function for displaying the dependency relationship between the elements updated by the dependency relationship update unit 120 on the display unit 30 as a design structure matrix (DSM). Further, the display unit 30 may have a function of displaying the design structure matrix (DSM) and the like after being optimized by the model analysis support apparatus 1. The selection element display unit 142 has a selection element display function for causing the display unit 30 to display a plurality of processing elements acquired by the dependency relationship information acquisition unit 110. Thereby, the user can select the processing element of interest as the reference element from among the displayed processing elements.

  The input receiving unit 150 is for receiving input from the user. The input reception unit 150 includes a selection element reception unit 151 and a search route reception unit 152. The selection element reception unit 151 has a selection element reception function that receives an input of a processing element that the user desires to analyze in a route search described later. That is, one processing element selected by the user from among the plurality of processing elements displayed on the display unit 30 is received as a reference element. The search route accepting unit 152 is a search that accepts a user-designated input as to which route is to be searched, that is, the route analysis from the reference element to the upstream route and the route analysis from the reference element to the downstream route in the route search described later. It has a route acceptance function.

  As will be described later, the route structure deriving unit 130 has a route structure deriving function for deriving the route structure and branch structure of the designated route from the reference element. Therefore, an analysis is performed based on the input information of the selection element reception unit 151 and the search route reception unit 152. The result is displayed on the display unit 30 by the hierarchical structure display unit 143 and the branch structure display unit 144.

  The hierarchical structure display unit 143 has a hierarchical structure display function for causing the display unit 30 to display the route structure derived by the route structure deriving unit 130. The branch structure display unit 144 has a branch structure display function for causing the display unit 30 to display the branch structure derived by the route structure deriving unit 130.

4). Design structure matrix (DSM)
FIG. 4 is an example of a design structure matrix (DSM) that the design structure matrix display unit 141 displays on the display unit 30 based on block diagram information output from Simulink (registered trademark). FIG. 4 is a design structure matrix (DSM) corresponding to the block diagram of FIG.

4-1. Rearrangement of Elements in Design Structure Matrix In the design structure matrix (DSM) row (left side in FIG. 4), processing elements are arranged in order. Similarly, the columns of the design structure matrix (DSM) (the right side in FIG. 4) contain processing elements arranged in the same order as the rows. Therefore, the design structure matrix (DSM) is an n × n matrix. As described above, in FIG. 1, the left side is upstream. For this reason, the elements are arranged in order from the upstream element, and are placed in the rows or columns of the design structure matrix (DSM). That is, the order is processing element 1010, processing element 1020, processing element 1100, processing element 1210, processing element 1300, processing element 1410, processing element 1420, and processing element 1430.

4-2. Dependency Relationship Information As shown in FIG. 4, the matrix includes a dependency relationship between the processing elements. Here, there is a dependency relationship between elements containing “1”. There is no dependency between elements containing “0”. In FIG. 4, a blank is displayed instead of “0”. The element Q1 displayed on the left side in FIG. 4 represents the dependence destination, and the element Q2 displayed on the upper side in FIG. 4 represents the dependence source.

  For example, since A1 (processing element 1010) does not depend on any processing element, the row component of the row of A1 (processing element 1010) has a value of “0”. Since Subsystem 1 (processing element 1100) depends on A2 (processing element 1020) and 1 / Z (processing element 1430), “1” is included in these row components. However, “0” is entered in the other row components. As described above, the dependency represented by the connection (arrow) in the block diagram of FIG. 1 is represented by the matrix component.

  Thus, the off-diagonal component of the design structure matrix (DSM) contains either “0” or “1”. When the off-diagonal component between the i-th element and the j-th element in the design structure matrix (DSM) is “1”, the i-th element and the j-th element have a dependency relationship. It is shown that. When the off-diagonal component between the i-th element and the j-th element in the design structure matrix (DSM) is “0”, the i-th element and the j-th element have no dependency. It is shown that. Thus, the off-diagonal component of the design structure matrix (DSM) is dependency information.

5. Dependency Update Method Here, a dependency update method will be described. This dependency update method is executed by the dependency update unit 120. And the kind of update method is
(A) Deletion of hierarchical elements (B) Deletion of guide elements (C) Three types of dependency relationships are given.

  Here, the hierarchy element and the guide element are connection elements that do not perform actual processing. A hierarchical element is an element that holds connection information with processing elements between different hierarchies. A guide element is an element that holds a connection from one processing element to another processing element as connection information. Therefore, these are unnecessary elements for analyzing the hierarchical structure and the branch structure. Therefore, these are omitted. In addition, Simulink (registered trademark) does not have connection information for writing to and reading from a memory. Therefore, when processing such as writing or reading is performed, the path is discontinuous at a place where there is no connection information when a path structure described later is derived. Therefore, it is necessary to avoid this. Therefore, these will be described sequentially.

5-1. (A) Deletion of Hierarchical Element FIG. 5 is a diagram illustrating the internal configuration of the hierarchy D2, that is, Subsystem 1 (processing element 1100). The Subsystem 1 includes a hierarchical element 1110, a hierarchical element 1120, a processing element 1130, a processing element 1140, a processing element 1150, a hierarchical element 1160, and a hierarchical element 1170.

  The hierarchical elements 1110, 1120, 1160, and 1170 are for connecting to the elements of the hierarchical level D1 by connection. The hierarchical elements 1110, 1120, 1160, and 1170 have only connection information, that is, dependency relationship information, and do not perform specific processing. In other words, it is an unnecessary element for the route search described later. In addition, it is not necessary to conduct other analysis and examination.

  FIG. 6 is a diagram depicting the hierarchy D1 and the hierarchy D2 connected as one hierarchy. As shown in FIG. 6, the dependency element of the hierarchical element 1120 is a processing element 1020. The dependency destination of the hierarchy element 1120 is the processing element 1150. As described above, the hierarchical element 1120 has only connection information between the processing element 1020 and the processing element 1150. Therefore, the deletion element specifying unit 121 specifies that the hierarchy element 1120 is an element to be deleted. At this time, the hierarchy element 1120 is a designated element designated by the deletion element designation unit 121.

  Next, the dependency relationship assigning unit 122 assigns a dependency relationship between the processing element 1020 located immediately upstream of the designated element 1120 and the processing element 1150. At this time, the processing element 1150 depends on the processing element 1020. On the other hand, the processing element 1150 is the source of the processing element 1150. Conceptually, a value of “1” is entered in the corresponding matrix component of the design structure matrix (DSM) shown in FIG. Actually, the dependency relationship information is added to the data corresponding to the processing element 1020 and the processing element 1150.

  At this stage, a dependency relationship is given between the processing element 1020 immediately upstream of the designated element and the processing element 1150 immediately downstream of the designated element. Therefore, the designated element deletion unit 123 deletes the hierarchical element 1120 that is the designated element. As a result, the hierarchical element 1120 unnecessary for analyzing the hierarchical structure is deleted.

  Similarly, the deletion element designation unit 121 designates the hierarchy elements 1110, 1160, and 1170 as designated elements. Then, a dependency is given between these immediately upstream processing elements and immediately downstream processing elements. Then, these designated elements may be deleted. As a result, the hierarchy elements 1110, 1120, 1160, and 1170 in the hierarchy D2 are deleted. FIG. 7 conceptually illustrates a block diagram after deleting these hierarchical elements.

  Note that the above processing is merely processing the output information from Simulink (registered trademark). Therefore, the data itself of the block diagram in Simulink (registered trademark) is not accessed and the data itself is not rewritten.

5-2. (B) Deletion of Guidance Elements FIG. 8 is a block diagram showing the same contents as FIG. In Simulink (registered trademark), a guide element (Goto block) 2020 and a guide element (From block) 2010 may be used as shown in FIG. This guide element (Goto block) 2020 means that a value is directly transferred to the corresponding guide element (From block) 2010. By using these guide elements (Goto block and From block), the entire process can be displayed in a concise manner.

  FIG. 9 is a block diagram in which a virtual connection line L7 is added to the block diagram of FIG. That is, the value output from the processing element 1430 is input as In11 to the processing element 1100 (Subsystem1) and input as In22 to the processing element 1300 (Subsystem2). Therefore, the block diagrams shown in FIGS. 8 and 9 are equivalent to the block diagram of FIG. As described above, the guide elements 2010 and 2020 are unnecessary elements for analyzing the hierarchical structure.

  Therefore, the deletion element designation unit 121 designates the guidance element 2010 and the guidance element 2020 as designation elements to be deleted.

  Next, the dependency relationship assigning unit 122 assigns a dependency relationship between the processing elements 1430 immediately upstream of the guide elements 2010 and 2020 and the processing elements 1100 and 1300 immediately downstream of the guide elements 2010 and 2020. To do. This processing method is as described above.

  Then, after the dependency relationship is given, the designated element deletion unit 123 deletes the guide elements 2010 and 2020 that are designated elements.

5-3. (C) Dependency Assignment A block diagram drawn by Simulink (registered trademark) includes a processing element 2100 (Data Store Memory), a processing element 2200 (Data Store Write), and a processing element 2300 (Data Store Read). It may be drawn. A specific example is shown in FIG.

  Here, the processing element 2100 (Data Store Memory) is for securing a memory area. Therefore, there is only one processing element 2100 (Data Store Memory) in the block diagram including all layers.

  A processing element 2200 (Data Store Write) is a processing element for writing information received from an upstream processing element in a memory area. The processing element 2300 (Data Store Read) is a processing element for reading information with reference to a memory area and passing it to a downstream processing element. Each of the processing element 2200 (Data Store Write) and the processing element 2300 (Data Store Read) has a number of 1 or more.

  In the block diagram output from Simulink (registered trademark), these processing elements 2100, 2200, and 2300 are not connected to each other as shown in FIG. That is, although there is a dependency relationship, no dependency relationship is given.

  Therefore, a dependency relationship is given. For this purpose, the dependency relationship assigning unit 122 of the dependency relationship updating unit 120 assigns dependency relationships as indicated by the connections L8 and L9 in FIG. Actually, the block diagram of FIG. 11 is not drawn.

  That is, in the design structure matrix (DSM), as shown in FIG. 12, the value “1” is entered based on the dependency.

5-4. Data structure A data structure that can perform an appropriate route search without counting connection elements that are not subjected to specific processing by performing the above-described (A) hierarchical element deletion and (B) guide element deletion processing. Is obtained. In addition, (C) by performing the process of adding the dependency relationship, a data structure in which the path is not interrupted is obtained. Therefore, a rational hierarchical structure and branch structure can be derived in the route search described later.

6). Route Search This route search is executed by the route structure deriving unit 130. The route search includes an upstream route search and a downstream route search. The upstream route search is a search for an upstream route from a processing element (reference element) selected by the user. The downstream route search is a search for a downstream route from a processing element (reference element) selected by the user.

6-1. Upstream Route Search For example, a case where an upstream route search is performed using the processing element 1430 (1 / Z) (see FIGS. 1 and 4) as a reference element will be described. Here, it is assumed that the configuration of the processing element 1300 (Subsystem 2) is as shown in FIG. In this case, the processing element 1300 (Subsystem 2) is immediately upstream of the processing element 1430 (1 / Z).

  More specifically, as shown in FIG. 13, there is a processing element 1350 immediately upstream of the processing element 1430 (1 / Z). In the processing element 1350, the distance p is 1, the hierarchy number q is 1, and the branch point number r is 0. Here, the distance p is the number of connections counted from the reference element. The number of hierarchies q is the number of hierarchies counted from the reference element. The branching point number r is the number of branching points counted from the reference element.

  Next, search upstream from the processing element 1350. On the upstream side of the processing element 1350, there are a processing element 1310 (Subsystem 3) and a processing element 1320. That is, it branches off upstream of the processing element 1350. Although not shown, the processing element 1310 (Subsystem 3) includes a processing element connected to the processing element 1350 by a connection. In the processing element, the distance p is 2, the hierarchy number q is 2, and the branch point number r is 2. In the processing element 1320, the distance p is 2, the hierarchy number q is 1, and the branch point number r is 2. Thus, since there is a branch, there may be a plurality of elements located at the same distance p. Then, the upstream of these processing elements is searched.

  In this way, a plurality of processing elements that are separated from the reference element by a distance p, and the number of hierarchies q and the number of branch points r that the processing element counts from the reference element are derived. This is repeated until the most upstream processing element is reached. As a result, all processing elements located upstream from the reference element can be represented by a combination of the distance p, the number of layers q, and the number of branch points r. The branching point number r is accumulated and counted every time a branching point is passed. In this way, when the designated route received by the search route receiving unit 152 is an upstream route, the route structure deriving unit 130 determines the distance p from the reference element and the number of hierarchies q and the processing element upstream from the reference element. The number r of branch points is derived.

6-2. Downstream Route Search The downstream route search can be performed in the same manner as the upstream route search. However, in the upstream route search, the dependency source is searched from the dependency destination, but in the downstream route search, the dependency destination is searched from the dependency source. That is, the route structure deriving unit 130, when the designated route accepted by the search route accepting unit 152 is a downstream route, for the processing element downstream from the reference element, the distance p from the reference element, the number of hierarchies q, and the number of branch points r is derived.

6-3. Display of route search result 6-3-1. Number of Hierarchies The hierarchical structure display unit 143 causes the display unit 30 to display a graph with the value of the distance p as the horizontal axis and the value of the number of hierarchies q as the vertical axis. The graph is illustrated in FIG. This is merely an example, and does not indicate the result of the route search derived above.

6-3-2. The number of branch points The branch structure display unit 144 causes the display unit 30 to display a graph having the value of the distance p as the horizontal axis and the value of the branch point number r as the vertical axis. The graph is illustrated in FIG. This is merely an example, and does not indicate the result of the route search derived above.

  The user can manually change the design structure matrix (DSM) while examining the depth of the hierarchy and the number of branch points with reference to these graphs. This change is to change the order of the elements of the matrix. At this time, if the order of the elements in the row is changed, the order of the elements in the column is changed accordingly.

7). Control Flow A control flow executed by the model analysis support apparatus 1 of the present embodiment will be described with reference to the flowchart of FIG. First, model information is acquired (S101). Here, the element, the connection (dependency relationship information), the hierarchy, and the coordinates of the element are acquired. Of course, other information may be acquired. Next, element rearrangement is executed (S102). Specifically, the control unit 100 executes. The processing content is as described in the rearrangement of the design structure matrix.

  Next, (A) hierarchical elements are deleted (S103). Next, (B) the guide element is deleted (S104). Next, (C) a dependency relationship is given (S105). The order of S103 to S105 may be changed as appropriate.

  Next, the design structure matrix (DSM) is displayed on the display unit 30 (S106). Then, the selection of the reference element by the user is accepted (S107). It also accepts an upstream route search input by the user. If an upstream route search is selected (S108: Yes), the process proceeds to S109. When the downstream route search is selected (S108: No), the process proceeds to S110. In S109, the upstream search result is displayed (S109). Then, the process proceeds to S111. In S110, the downstream search result is displayed (S110). Then, the process proceeds to S111.

  In S111, an input by the user is accepted. When the option for displaying the hierarchy is selected by the user (S111: Yes), the process proceeds to S112. If not (S111: No), the process proceeds to S113. In S112, a graph of the number of layers is displayed. In S113, a graph of the number of branch points is displayed.

  Based on the above analysis results, the user examines the model process. If necessary, the order of the elements is changed. Therefore, (1) a process with few returns, (2) a process with a small number of hierarchies, and (3) a process with a small number of branch points can be designed. Alternatively, a combination of these makes it possible to create a simulation model designed according to the user's design concept.

8). Modification 8-1. In this embodiment, a value of “1” is entered as a matrix element having a dependency relationship. However, if the dependency is strong, a larger numerical value may be entered. In other words, the larger the dependency, the larger the value.

8-2. Storage Medium In the present embodiment, the model analysis support apparatus 1 and the model analysis support program P1 have been described. However, the present invention can of course be applied to a storage medium in which the model analysis support program P1 is recorded. This storage medium is a computer-readable storage medium recording the model analysis support program P1. Examples of the storage medium include CDROM and DVDROM. Of course, it may be other than this.

8-3. Processing of Dependency Updater In this embodiment, (A) deletion of hierarchical elements (S103), (B) deletion of guidance elements (S104), and (C) addition of dependencies (S105) I decided to do it. However, depending on the block diagram of Simulink (registered trademark), any one of these may be used. Of course, any two of these may be used.

8-4. Processing of Design Structure Matrix (DSM) In the above-described control flow (FIG. 16), the arrangement of elements in the design structure matrix (DSM) is determined based on the arrangement of the block diagram. However, the elements may be replaced by a known method (for example, see Patent Document 1).

9. Summary As described in detail above, the model analysis support apparatus 1 and the model analysis support program P1 of the present embodiment can optimize the simulation model using the design structure matrix (DSM). Further, by arranging the dependency relationships and newly adding the dependency relationship, the hierarchical structure and the branch structure can be shown to the user. Therefore, the user can reconstruct the simulation model according to the user's design philosophy by considering these in a composite manner.

  In addition, a present Example is only a mere illustration. Therefore, naturally, various improvements and modifications can be made without departing from the scope of the invention.

(Second Embodiment)
A second embodiment will be described. In the first embodiment, the processing element of the simulation model is used. However, the development process may be a processing element. For example, development of automobile engines and the like can be mentioned. In that case, the processing elements of FIG. 1 and FIG. 4 are development steps. By using the design structure matrix (DSM), it is possible to shorten the engine development period by optimizing the engine development process.

P1 ... Model analysis support program 1 ... Model analysis support device 10 ... Processing device 20 ... Input unit 30 ... Display unit C1 ... CPU
M1 ... Memory 100 ... Control unit 110 ... Dependency relationship information acquisition unit 120 ... Dependency relationship update unit 121 ... Deleted element designation unit 122 ... Dependency element assignment unit 123 ... Specified element deletion unit 130 ... Path structure derivation unit 140 ... Display control unit 143 ... Hierarchical structure display part 144 ... Branch structure display part 150 ... Input reception part 200 ... Non-volatile memory

Claims (7)

In a model analysis support device using a design structure matrix that expresses dependency information between multiple elements,
The elements include
A processing element having a process to be executed;
There are at least two types of connection elements that have only connection information that connects the processing elements without having a process to be executed.
The model analysis support device includes:
A dependency information acquisition unit that acquires the processing element, the connection element, and dependency information between these elements;
A dependency update unit that updates the dependency relationship between the elements acquired by the dependency relationship information acquisition unit;
A design structure matrix display unit for displaying the dependency relationship between the elements updated by the dependency relationship update unit on the display unit as a design structure matrix;
Have
The dependency update unit
A deletion element designating unit that designates the connection element as a deletion target in a designated element;
A dependency granting unit for newly giving a dependency between the processing element located upstream from the designated element and the processing element located downstream from the designated element;
A designated element deleting unit that deletes the specified element after the dependency is given by the dependency giving unit;
A model analysis support apparatus comprising: The model analysis support apparatus according to claim 1,
A selection element display unit that causes the display unit to display a plurality of processing elements acquired by the dependency relationship information acquisition unit;
A selection element receiving unit that receives, as a reference element, a processing element selected by the user from among a plurality of processing elements displayed on the display unit by the selection element display unit;
A search route acceptance unit that accepts designation by the user as a designated route as to which route to search for a route upstream from the reference element and a route downstream from the reference element;
A route structure deriving unit for deriving a route structure of the designated route from the reference element;
A model analysis support apparatus comprising: In the model analysis support device according to claim 2,
The path structure deriving unit includes:
When the designated route received by the search route receiving unit is an upstream route,
Deriving the distance from the reference element, the number of hierarchies and the number of branch points for the processing element upstream from the reference element;
When the designated route received by the search route receiving unit is a downstream route,
A model analysis support apparatus for deriving the distance, the number of hierarchies, and the number of branch points from a reference element for a processing element downstream from the reference element. In the model analysis support device according to claim 3,
A model having a hierarchical structure display unit that displays the distance derived by the path structure deriving unit on the horizontal axis and the number of hierarchies derived by the path structure deriving unit on the vertical axis. Analysis support device. In the model analysis support device according to claim 3,
A model having a branch structure display unit that displays the distance derived by the path structure deriving unit on the horizontal axis and the number of branch points derived by the path structure deriving unit on the vertical axis. Analysis support device. In a model analysis support program for causing a computer to execute a model analysis support device using a design structure matrix that expresses dependency relationship information between multiple elements,
The elements include
A processing element having a process to be executed;
There are at least two types of connection elements that have only connection information that connects the processing elements without having a process to be executed.
A dependency information acquisition function for acquiring the processing element, the connection element, and dependency information between these elements;
A dependency update function for updating the dependency relationship between the elements acquired by the dependency relationship information acquisition function;
A design structure matrix display function for displaying a dependency relationship between elements updated by the dependency relationship update function as a design structure matrix on a display unit;
Is realized,
The dependency update function
A deletion element specification function for specifying the connection element as a deletion target in a specified element;
A dependency providing function for newly adding a dependency between a processing element located upstream from the designated element and a processing element located downstream from the designated element;
A designated element deletion function for deleting the designated element after the dependency is given by the dependency grant function;
A model analysis support program characterized by that. In the model analysis support program according to claim 6,
A selection element display function for displaying a plurality of processing elements acquired by the dependency relationship information acquisition function on the display unit;
A selection element receiving function for receiving, as a reference element, a processing element selected by a user from among a plurality of processing elements displayed on the display unit by the selection element display function;
A search route acceptance function that accepts designation by a user as a designated route as to which route to search for a route upstream from the reference element and a route downstream from the reference element;
A route structure deriving function for deriving a route structure of a designated route from the reference element;
A model analysis support program characterized by that.