JP6941536B2 - Linear motor analysis device, linear motor analysis method, and linear motor analysis program - Google Patents

Description

The present invention relates to a linear motor analysis device, a linear motor analysis method, and a linear motor analysis program.

A linear motor having a mover that linearly moves along an arranged stator is applied to a linear drive device or the like. In Patent Document 1, as a magnetic field analysis method for a linear motor, a mesh is created in the air region around the mover, and the surrounding mesh is reconstructed (remeshed) each time the mover moves along the traveling route. A method for magnetic field analysis is described.

X. Wang et al., "Research on Permanent Magnet Linear Synchronous Motor for Rope-less Hoist System", JOURNAL OF COMPUTERS, Vol.7, No.6, JUNE 2012, pp.1361-1368

In the method of Non-Patent Document 1, remesh occurs every time the mover moves, so that it takes a long time to create mesh data as input data for magnetic field analysis. On the other hand, since it is only necessary to remesh around the current mover, the size of the generated mesh data does not need to be increased excessively.

On the other hand, as an analysis method that does not require remeshing, an extra long air region is provided for both the mover and the stator in the front-rear direction in which the mover moves, a wider analysis space is set, and both front and rear ends in the mover traveling direction. Consider how to set periodic boundary conditions in. However, in this method, it is necessary to consider the moving distance of the mover and analyze on the assumption that the magnetic field at the boundary where the periodic boundary conditions are set is very weak. It is necessary to provide a long mesh space. Therefore, it requires an unnecessarily large analysis space, a longer calculation time, and a large storage capacity.

Therefore, the main object of the present invention is to appropriately reduce the analysis time and the storage capacity of the linear motor while maintaining the analysis accuracy.

In order to solve the above problems, the linear motor analyzer of the present invention has the following features.
The present invention creates a mover mesh including a mover of a drive device and a stator mesh including a stator of the drive device, and creates a mesh in which variables describing fields are assigned to the areas of both created meshes. Department and
A step change unit that changes the positional relationship between the two meshes created by the mesh creation unit according to the spatial movement of the mover, and a step change unit.
For each positional relationship between the two meshes changed by the step change unit, the variable describing the field assigned to the non-analyzed region, which is a part of the regions of the two meshes, is excluded from the analysis target. Analysis target setting unit and
It is characterized by having an analysis unit that performs magnetic field analysis based on a variable that describes the field assigned to the remaining regions of both meshes that are not excluded by the analysis target setting unit.
Other means will be described later.

According to the present invention, the analysis time and storage capacity of the linear motor can be appropriately reduced while maintaining the analysis accuracy.

It is a block diagram of the linear motor analysis system which concerns on one Embodiment of this invention. It is a block diagram of the computer which concerns on one Embodiment of this invention. It is a flowchart which shows the operation of the linear motor analysis system which concerns on one Embodiment of this invention. It is a space diagram which shows the space including the mover of the analysis target in the traveling direction type which concerns on one Embodiment of this invention. FIG. 5 is an explanatory diagram of a process in which an analysis target setting unit sets a mover non-analysis region in a mover mesh in the state of FIG. 4 according to an embodiment of the present invention. It is a space diagram when the mover which concerns on one Embodiment of this invention is located at the start point of the traveling route. It is a space view when a mover advances to the left from the state of FIG. 6 concerning one Embodiment of this invention. FIG. 5 is a spatial diagram when the mover is located at the end point of the traveling route as a result of the mover moving to the left from the state of FIG. 7 according to the embodiment of the present invention. The positional relationship between the stator mesh and the mover mesh in time step 1 in the node movement step change method according to the embodiment of the present invention is shown. The positional relationship between the stator mesh and the mover mesh in time step 2 in the node movement step change method according to the embodiment of the present invention is shown. The positional relationship between the stator mesh and the mover mesh in time step 3 in the node movement step change method according to the embodiment of the present invention is shown. The positional relationship between the stator mesh and the mover mesh in time step 1 in the coordinate system step change method according to the embodiment of the present invention is shown. The positional relationship between the stator mesh and the mover mesh in time step 2 in the coordinate system step change method according to the embodiment of the present invention is shown. The positional relationship between the stator mesh and the mover mesh in time step 3 in the coordinate system step change method according to the embodiment of the present invention is shown. It is a space diagram which shows the space including the mover of the analysis target in the superimposition type which concerns on one Embodiment of this invention. It is a space diagram which extracted only the stator mesh from the space diagram of FIG. 15 concerning one Embodiment of this invention. It is a three-dimensional space view when the upper mover mesh and the lower stator mesh are separated into the state before overlapping with respect to the space view of FIG. 15 concerning one embodiment of the present invention. FIG. 5 is a spatial diagram when the mover 2 according to the embodiment of the present invention is located at the starting point of the traveling route. It is a space view when a mover advances to the left from the state of FIG. 18 concerning one Embodiment of this invention. FIG. 5 is a spatial diagram when the mover is located at the end point of the traveling route as a result of the mover moving to the left from the state of FIG. 19 relating to one embodiment of the present invention. It is a space diagram when the superposition type is applied even in the space where the traveling route as shown in FIG. 4 concerning one embodiment of the present invention is not surrounded by a stator. It is a three-dimensional space view when the upper mover mesh and the lower stator mesh are separated into the state before overlapping with respect to the space view of FIG. 21 relating to one embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration diagram of a linear motor analysis system.
The linear motor analysis system includes a computer (linear motor analysis device) 50, a display device 60, a storage medium 70, and an input device 80. Further, the linear motor (driving device) to be analyzed by the linear motor analysis system and the actuator driven by the linear motor are configured to include the mover 2 and the stator 1 (see FIG. 4).

The input device 80 includes various data (shape data, position data in space, etc.) related to the mover 2 and the stator 1 required for creating mesh data, and various parameters (mesh size, element) required for the solver to perform analysis. Accepts input data such as shape).
The computer 50 executes the magnetic field analysis by operating a program related to the magnetic field analysis method (details are shown in FIG. 2) based on the input data from the input device 80.
The display device 60 displays the result data of the magnetic field analysis of the computer 50 on the screen.
The storage medium 70 stores data used for magnetic field analysis of the computer 50 and data as a result of magnetic field analysis. Although the form in which the storage medium 70 is externally connected to the computer 50 is illustrated in FIG. 1, the storage medium 70 may be built in the computer 50 or is configured as a network storage accessible from the computer 50 via a network. You may be.

FIG. 2 is a block diagram of the computer 50.
The computer 50 reads each program in which the algorithms for realizing the mesh creation unit 51, the step change unit 52, the analysis target setting unit 53, and the analysis unit 54 are described from the storage medium 70 into the memory, and reads the CPU ( Central Processing Unit) executes as a process. Hereinafter, details of each component of the computer 50 will be clarified with reference to the flowchart of FIG.

FIG. 3 is a flowchart showing the operation of the linear motor analysis system.
In the mesh creation process of S11, the mesh creation unit 51 creates a mover mesh including the mover 2 and a stator mesh including the stator 1. For example, there are the following two methods for creating a mesh.
-A method of generating a mover mesh along the moving direction (spatial movement direction) of the mover 2 (hereinafter, referred to as "moving direction type". Details will be described later in Example 1 of FIG. 4 and thereafter).
-A method of generating the stator mesh so as to overlap a part of the region of the stator mesh (hereinafter, referred to as "superimposition type". Details will be described later in Example 2 after FIG. 15).

The mesh creating unit 51 in FIG. 2 is at equal intervals in the traveling direction of the mover 2 so that the mesh is always aligned at the boundary surface (boundary line in the two-dimensional analysis) between the mover space 25 and the stator space 15. It is desirable to divide the mesh so that As a result, the step changing unit 52 can move the mover space 25 step by step at regular intervals, and the analysis process by the analysis unit 54 can be simplified.

Then, the mesh creation unit 51 arranges a variable of a field that describes an electromagnetic field for analysis by the finite element method for the region of the created mover mesh and the region of the stator mesh. The variable to be placed is, for example, a variable related to the magnetic vector potential, and when the placement destination is the conductor region, a variable related to the electric scalar potential may be added to describe the eddy current.

In the analysis target setting process of S13 of FIG. 3, the analysis target setting unit 53 is a part of the region of the mover mesh (in the case of the traveling direction type) in which the step change unit 52 has changed the positional relationship, or the stator mesh. A part of the area (in the case of the superposition type) is excluded from the analysis target as a "non-analysis area". On the other hand, the remaining regions of both meshes that are not excluded as non-analyzed regions are "analyzed regions" set as analysis targets. As a result, the entire area of both meshes created by the mesh creating unit 51 becomes larger than the analysis area of both meshes by the amount of the non-analysis area.

In the analysis process of S14, the analysis unit 54 executes various analyzes (magnetic field analysis, etc.) of the mover mesh and the stator mesh as solvers with respect to the variables describing the field of the analysis region set by the analysis target setting unit 53.
In the process end determination process of S15, the step change unit 52 determines whether or not the analysis process in the next step is necessary. For example, when the mover 2 arrives at the end point of the traveling route by the step change process (S12) this time, the step change unit 52 determines that the analysis process in the next step is unnecessary.
If the process ends (Yes) in S15, the process of the flowchart of FIG. 3 ends. If the process is continued (No) in S15, after the process of S12 is executed, the process returns to S13 and the process proceeds to the next step.

In the step change process of S12, the step change unit 52 steps (every unit time) the mover mesh and the stator with respect to the mover mesh created by the mesh creation unit 51 as the mover 2 moves. Change the positional relationship with the mesh. There are the following two methods for this step change process, for example.
-A method of moving each node of the mover mesh step by step (hereinafter referred to as "node movement step change method", details will be described later in FIGS. 9 to 11).
-Capture the stator mesh in the stationary coordinate system and the mover mesh in the motion coordinate system, and do not move the nodes of the mover mesh. A method of stepwise changing the combination of sides in the boundary region between the mover mesh and the stator mesh (hereinafter referred to as the "coordinate system step change method", details will be described later in FIGS. 12 to 14). ..
The two types of mesh creation processing (advancing direction type and superposition type) of S11 and the two types of step change processing (node movement step change method, coordinate system step change method) of S12 can be arbitrarily combined. (2 x 2 = 4 ways).

The operation of the linear motor analysis system has been described above with reference to FIG. The stator mesh and the mover mesh first created by the mesh creating unit 51 in S11 are repeatedly reused in S12 by the step changing unit 52 as the mover 2 moves. As a result, the mesh creating unit 51 does not need to perform the remesh processing accompanying the movement of the mover 2, and the calculation amount of the mesh creating process can be reduced.
Further, since the analysis target setting unit 53 provides the non-analysis area in the mesh in S13, the calculation target in S14 of the analysis unit 54 is only the analysis area, so that the calculation amount of the analysis process can be reduced. In other words, it is not a method of reducing the amount of calculation that deteriorates the analysis accuracy such as roughening the mesh, but by making the area that does not affect the analysis a non-analysis area, the amount of calculation is appropriately reduced while maintaining the analysis accuracy. can.

Hereinafter, the first embodiment in which the mesh creating unit 51 creates a traveling direction type mesh in the mesh creating process of S11 will be described with reference to FIGS. 4 to 14. On the other hand, the overlay type mesh creation process will be described in the second embodiment after FIG.
FIG. 4 is a spatial diagram showing a space including the mover 2 to be analyzed in the traveling direction type. This spatial view is a plan view for a two-dimensional analysis and a two-dimensional cross-sectional view for a three-dimensional analysis.

The mover 2 in FIG. 4 moves between the upper stator 1 and the lower stator 1 from the right side to the left side. Such an arrangement example appears, for example, when the stator 1 has a tunnel structure. The mover 2 located at the center of FIG. 4 is surrounded by a mover air region 20. The mover 2 and the mover air region 20 are combined to form a mover space 25, and the mesh creating unit 51 creates a mover mesh for the mover space 25 (S11).

Similarly, each of the stators 1 located on the upper side and the lower side of FIG. 4 is surrounded by a stator air region 10. The stator 1 and the stator air region 10 are combined to form a stator space 15, and the mesh creating unit 51 creates a stator mesh for the stator space 15 (S11).
In FIG. 4, the stator mesh for the upper stator 1 and the stator mesh for the lower stator 1 were separately created, but for example, the upper stator 1 does not exist and the lower stator 1 does not exist. In the section where only the side stator 1 exists, the upper stator mesh does not have to be created.
The mover mesh is prepared at the initial position of the mover space 25 on the right side of the stator mesh at least by the moving distance of the mover space 25.

FIG. 5 is an explanatory diagram of a process in which the analysis target setting unit 53 sets the mover non-analysis region 21 in the mover mesh in the state of FIG.
Since the width of the mover space 25 is longer than the width Xa of the stator space 15, the left side Xb and the right side Xc of the mover space 25 protrude from the width Xa, respectively. The analysis target setting unit 53 sets the protruding region of the mover space 25 as the mover non-analysis region 21 (S13). That is, the analysis target setting unit 53 analyzes one mover space 25 having the same width as the first mover non-analysis area 21 protruding to the left by the length Xb and the width Xa of the stator space 15. It is classified into a region and a second mover non-analysis region 21 that protrudes to the right by the length Xc.

In the mesh created by the mesh creating unit 51, the boundary surface between the stator space 15 and the mover space 25 (the boundary line in the two-dimensional analysis) is divided into meshes at equal intervals in the traveling direction of the mover space 25. Is desirable. In this way, each time the mover space 25 moves stepwise, the boundary surface between the stator space 15 and the mover space 25 is already in a mesh-matched state, and highly accurate analysis becomes possible.
Further, in FIGS. 4 and 5, the stator mesh is provided on both the upper and lower sides, but the above-mentioned various processes are also applied when the stator 1 (stator mesh) is provided only on the upper side or only on the lower mold. You may.

Further, in FIG. 5, the length of the stator space 25 (= Xb + Xa + Xc) is longer than the length of the stator space 15 (= Xa), but the length of the stator space 15 is longer than Xa. It may be set. For example, the length of the stator space 15 may be the same as the length of the mover space 25 (= Xb + Xa + Xc), and both the analysis area of the stator space 15 and the analysis area of the mover space 25 may be the length Xa. In this case, the non-analyzed region of the stator space 15 also has the first non-analyzed region protruding to the left side by the length Xb and the non-analyzing region protruding to the right side by the length Xc, as in the mover non-analyzing region 21. It is composed of two non-analyzed regions.

Hereinafter, the step change process (S12) of the step change unit 52 will be described with reference to FIGS. 6 to 14.
FIG. 6 is a spatial diagram when the mover 2 is located at the starting point of the traveling route. The mover non-analysis area 21 shown at the left end of the mover space 25 does not have to be provided.
FIG. 7 is a spatial view when the mover 2 advances to the left from the state of FIG.
FIG. 8 is a spatial diagram when the mover 2 is located at the end point of the traveling route as a result of the mover 2 moving to the left from the state of FIG. The mover non-analysis area 21 shown at the right end of the mover space 25 does not have to be provided.
The step changing unit 52 moves the mover space 25 including the mover air region 20 stepwise to the left in conjunction with the mover 2 moving to the left.
As a result, the position of the stator space 15 is not changed, so that the width of the mover non-analysis area 21 protruding from the stator space 15 gradually increases with the passage of time. The right (rear) mover non-analyzed region 21 gradually becomes shorter.

9 to 11 are explanatory views showing the details of the step change process (S12) in the node movement step change method. In the node movement step change method, each node of the upper stator mesh (elements W11 to W17, W21 to W27) is not moved, and space is provided for each node of the lower mover mesh (elements R11 to R17, R21 to R27). Move inside step by step.
In FIG. 9, the lower side of the element W12 and the upper side of the element R11 are separated from each other and connected to each other by arrows in both directions. Is arranged at a position where the lower side of the element W12 and the upper side of the element R11 overlap each other (positions that share the side).

9, 10 and 11, respectively, show the positional relationship between the stator mesh and the mover mesh in the time steps 1, 2 and 3 when the mover 2 moves one step at a time.
For example, focusing on the element W12 of the stator mesh, as shown by the double-headed arrows, the time step 1 shares the boundary with the element R11 of the front movable child mesh. In the next time step 2, the step changing unit 52 moves the entire mover mesh one element (one square) to the left. As a result, the corresponding partner of the element W12 is shifted from the element R11 to the element R12. Similarly, in the time step 3, the corresponding partner of the element W12 is shifted from the element R12 to the element R13.

12 to 14 are explanatory views of the step change process (S12) in the coordinate system step change method. The coordinate system step change method is a method in which the nodes of the mover mesh are not moved, and will be described below.
12, 13 and 14, respectively, show the positional relationship between the stator mesh and the mover mesh in the time steps 1, 2 and 3 when the mover 2 moves one step at a time.
For example, paying attention to the element W12 of the stator mesh, as shown by the double-headed arrows, the boundary is shared with the element R11 of the lower left mover mesh in the time step 1.
In the next time step 2, the step changing unit 52 moves the association between the stator mesh and the mover mesh (two-way arrows) one element (one square) to the right when viewed from the stator mesh. .. As a result, the corresponding partner of the element W12 is shifted from the element R11 to the element R12.
Similarly, in the time step 3, the corresponding partner of the element W12 is shifted from the element R12 to the element R13.

In this way, the step changing unit 52 has sides so that the sides of the mover mesh in the motion coordinate system and the stator mesh in the rest coordinate system coincide with each other (so that they can be associated with each other) in the boundary region. Even in the coordinate system step change method in which the combination of is changed step by step, the same effect as the node movement step change method can be obtained.
As described above, the case of creating the traveling direction type mesh has been described as the first embodiment with reference to FIGS. 4 to 14.

From FIG. 15, the overlay type mesh creation process will be described as the second embodiment.
FIG. 15 is a spatial diagram showing a space including the mover 2 to be analyzed in the superposed type. Similar to FIG. 4 of the first embodiment, it is a plan view in the case of two-dimensional analysis and a two-dimensional cross-sectional view in the case of three-dimensional analysis.
The mesh creating unit 51 creates a mover mesh for the mover space 25 composed of the mover 2 and the mover air region 20 surrounding the mover 2 (S11).

FIG. 16 is a spatial diagram in which only the stator mesh is extracted from the spatial diagram of FIG.
The mesh creating unit 51 includes a "mouth" -shaped stator 1 that surrounds the mover 2, an outer stator air region 11 that surrounds the outside of the stator 1, and an inner stator air region 12 that is inside the stator 1. A stator mesh is created for the stator space 15 to be constructed (S11). The stator space 15 is formed so as to include the stator 1, and is set in, for example, the entire analysis space.
The step change unit 52 superimposes the mover space 25 in which the mover mesh exists on the current position of the traveling route of the mover 2 in the stator space 15. In other words, in the region of the mover space 25, the mesh of the stator space 15 and the mesh of the mover space 25 coexist.

FIG. 17 is a three-dimensional spatial diagram when the upper movable element mesh and the lower stator mesh are separated into a state before overlapping with respect to the spatial diagram of FIG.
The mesh creation unit 51 arranges a variable of a field that describes an electromagnetic field for analysis by the finite element method for both the region of the created mover mesh and the region of the stator mesh.
The analysis target setting unit 53 excludes the stator non-analysis area 19 which is a part of the stator space 15 overlapping the mover space 25 from the analysis target, and excludes the stator non-analysis area 19 from the stator space 15. The region and the mover space 25 are set as the analysis region (S13).

FIG. 18 is a spatial diagram when the mover 2 is located at the starting point of the traveling route. The traveling route of the mover 2 is set along the inner stator air region 12, and for example, the right end of the inner stator air region 12 is the starting point and the left end is the ending point.
FIG. 19 is a spatial view when the mover 2 advances to the left from the state of FIG.
FIG. 20 is a spatial diagram when the mover 2 is located at the end point of the traveling route as a result of the mover 2 moving to the left from the state of FIG.
As shown in FIGS. 18 to 20, the step changing unit 52 moves the mover 2 along the traveling route (S12). As this movement method, the above-mentioned node movement step change method may be used, or the coordinate system step change method may be used.

The case of creating a superposed mesh has been described above with reference to FIGS. 15 to 20. As a result, even in the case where the stator 1 exists in the traveling direction of the mover 2 and the periodic boundary condition cannot be used, the analysis becomes possible.
The advantage of using the traveling direction type mesh of Example 1 is that the mover mesh is not included in the stator mesh as in the overlapping type, but is arranged at different positions, so that the boundary surfaces are aligned with each other. This means that there are few restrictions on mesh creation.

Further, the advantage of using the superposition type mesh of the second embodiment is not limited to the limitation of the shape of the stator 1 as illustrated by the "mouth" -shaped stator 1 in FIG. 15, and can be widely applied. It is a point. Hereinafter, an example in which the overlay type mesh can be applied to the stator 1 of FIG. 4 which is separately arranged on the upper side and the lower side will be described with reference to FIGS. 21 and 22.

FIG. 21 is a spatial diagram when the superposition type of the second embodiment is applied even in a space where the traveling route as shown in FIG. 4 is not surrounded by the stator 1.
The mesh creating unit 51 creates a mover mesh for the mover space 25 composed of the mover 2 and the mover air region 20 surrounding the mover 2 (S11).
The mesh creating unit 51 is larger than the two stators 1 that sandwich the mover 2 on the upper and lower sides so as to include the two stators 1 and the traveling route of the mover 2 (unlike FIG. 4). For example, the outer stator air region 11 is set (for example, in the entire analysis space). Then, the mesh creating unit 51 creates a stator mesh with respect to the outer stator air region 11 (stator space 15) (S11).

FIG. 22 shows a three-dimensional object when the upper mover mesh (movable space 25) and the lower stator mesh (stator space 15) are separated into a state before overlapping with respect to the space diagram of FIG. 21. Spatial view.
The analysis target setting unit 53 excludes the stator non-analysis area 19 which is a part of the stator space 15 overlapping the mover space 25 from the analysis target, and excludes the stator non-analysis area 19 from the stator space 15. The region and the mover space 25 are set as the analysis region (S13).

In order to explain the computational complexity reduction effect of the present embodiment described above in more detail, as a comparative example, it is compared with the method using the periodic boundary condition described at the beginning, which does not require remeshing as in the present embodiment.

The method using this periodic boundary condition is common to the present embodiment in that the load of creating mesh data is reduced by not generating remesh, but the analysis load increases due to the increase in mesh data. It ends up.
On the other hand, in the present embodiment, even if the mesh data created by the mesh creation unit 51 becomes slightly large, the calculation load on the analysis unit 54 is increased by setting the non-analysis area of the analysis target setting unit 53, which is the subsequent processing. Can be reduced appropriately. Further, in the present embodiment, magnetic field analysis can be performed under appropriate boundary conditions.

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations.
Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.
Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration. Further, each of the above configurations, functions, processing units, processing means and the like may be realized by hardware by designing a part or all of them by, for example, an integrated circuit.
Further, each of the above configurations, functions, and the like may be realized by software by the processor interpreting and executing a program that realizes each function.

Information such as programs, tables, and files that realize each function can be stored in memory, hard disks, recording devices such as SSDs (Solid State Drives), IC (Integrated Circuit) cards, SD cards, DVDs (Digital Versatile Discs), etc. Can be placed on the recording medium of.
In addition, the control lines and information lines indicate those that are considered necessary for explanation, and do not necessarily indicate all the control lines and information lines in the product. In practice, it can be considered that almost all configurations are interconnected.
Further, the communication means for connecting each device is not limited to the wireless LAN, and may be changed to a wired LAN or other communication means.

1 Stator 2 Stator 10 Stator air area 11 Outer stator air area 12 Inner stator air area 15 Stator space 19 Stator non-analyzed area 20 Movable air area 21 Movable non-analyzed area 25 Movable space 50 Computer (Linear motor analyzer)
51 Mesh creation unit 52 Step change unit 53 Analysis target setting unit 54 Analysis unit 60 Display device 70 Storage medium 80 Input device

Claims (7)

A mesh creation unit that creates a stator mesh that includes a mover of a drive device and a stator mesh that includes a stator of the drive device, and assigns variables that describe fields to the areas of both created meshes.
A step change unit that changes the positional relationship between the two meshes created by the mesh creation unit according to the spatial movement of the mover, and a step change unit.
For each positional relationship between the two meshes changed by the step change unit, the variable describing the field assigned to the non-analyzed region, which is a part of the regions of the two meshes, is excluded from the analysis target. Analysis target setting unit and
A linear motor analysis device comprising an analysis unit that performs magnetic field analysis based on a variable that describes the field assigned to the remaining regions of both meshes that are not excluded by the analysis target setting unit. The linear motor analysis device according to claim 1, wherein the step changing unit changes the positional relationship between the two meshes by moving the created mover mesh stepwise. The step changing unit steps the combination of sides so that the sides of the mover mesh in the motion coordinate system and the stator mesh in the stationary coordinate system coincide with each other in the boundary region. The linear motor analyzer according to claim 1, wherein the positional relationship between the two meshes is changed. The mesh creating unit creates both meshes so that the width of the mover mesh in the spatial movement direction of the mover is longer than the width of the stator mesh by at least the space movement distance of the mover. ,
The linear according to claim 1, wherein the analysis target setting unit sets a region of the mover mesh protruding from the width of the stator mesh in the spatial movement direction of the mover as the non-analysis region. Motor analyzer. The mesh creating unit creates the stator mesh so as to include the position of the stator and the spatial movement route of the mover, and includes the mover located at the spatial movement route in the stator mesh. Create the mover mesh as described above,
The linear motor analysis device according to claim 1, wherein the analysis target setting unit sets a region of the stator mesh located in an overlapping region of both meshes as the non-analysis region. It is executed by a linear motor analysis device that has a mesh creation unit, a step change unit, an analysis target setting unit, and an analysis unit.
The mesh creation unit creates a mover mesh including a mover of a drive device and a stator mesh including a stator of the drive device, and assigns a variable that describes a field to the areas of both created meshes. ,
The step changing unit changes the positional relationship between the two meshes created by the mesh creating unit according to the spatial movement of the mover.
The analysis target setting unit describes the field assigned to the non-analysis area, which is a part of the areas of both meshes, for each positional relationship between the two meshes changed by the step change unit. Exclude the variables to be analyzed from the analysis target
A linear motor analysis method, characterized in that the analysis unit performs magnetic field analysis based on variables describing the field assigned to the remaining regions of both meshes that are not excluded by the analysis target setting unit. A linear motor analysis program for causing a linear motor analysis device, which is a computer, to execute the linear motor analysis method according to claim 6.

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