KR102396944B1 - System modeling method sysem interoperability method and for physical system and virtual system based on the segment - Google Patents

Abstract

Disclosed are a system modeling method and a system interworking method for a segment-based virtual physical system. A system modeling method includes identifying devices in a physical system; setting a segment of a virtual system corresponding to the physical system based on the identified task of the physical system and a device performing the task; and modeling the virtual system through the set segment.

Description

System modeling method and system interworking method for segment-based virtual physics system

The present invention relates to a system modeling method and a system interworking method for a segment-based virtual physical system, and more particularly, to a physical system and a virtual system using a computing device for interworking between a physical system in a real area and a virtual system in a virtual area. It relates to a method of establishing a mapping relationship between systems and interworking between a physical system and a virtual system.

Recently, rather than directly controlling the physical system composed of various components operating in the real environment, set up a virtual system that interlocks with the physical system, collect data on the physical system through the virtual system, and analyze it. Simulation techniques are being developed.

The interface between the virtual world and the physical world consists of numerous sensing devices, computing and communication devices, and various types of actuators, which operate in a complex and error-prone real world, that is, a real-time environment.

There is a need for a method for accurately setting the operating relationship of each component included in the physical system of the real world, modeling it through a virtual system, and interworking between these systems.

The present invention proposes a method of more accurately modeling a mapping relationship between a physical system and a virtual system by modeling the process of each component included in the physical system of the real world in segments through the virtual system of the virtual world.

The present invention proposes a method for interworking between systems in which data scanned from a physical system is applied to a virtual system and a result of data processing in the virtual system is applied to the physical system.

The present invention proposes a method for more accurately determining the current state of the process of each component included in a physical system in continuous time and linking the process progress of different components.

A system modeling method according to an embodiment of the present invention includes identifying devices of a physical system; setting a segment of a virtual system corresponding to the physical system based on the identified task of the physical system and a device performing the task; and modeling the virtual system through the set segment.

The virtual system may be modeled as a work segment corresponding to the work of the physical system and a device segment corresponding to a device participating in the work of the physical system.

In the step of setting the segment, a process in which the state of the device segment is connected in a sequence form according to the work of the physical system may be set in the work segment.

In the segment, when the process of the work segment starts according to an external event, the process may proceed without interruption until the process is terminated.

The process may be a result of setting the temporal and spatial event flow for the work of the physical system for the work segment of the virtual system.

The process may be set by connecting states of at least one device segment connected to the working segment in a sequence form.

The process of the work segment may be started in an initial state when a first event for the work segment exists, and an end state of the process may be converted to an initial state according to a second event for the work segment.

The process of the working segment includes information that normalizes a continuous time during which the process of the working segment is performed, information indicating a state of a device segment constituting the process of the working segment, and a device corresponding to the device segment. It may be expressed through at least one piece of information indicating the degree of abnormality.

The work segment may be set according to a hierarchy from an upper level to a lower level, and the work segment of the highest level can be ended only when all work segments of the lower level are finished.

An end state in the process of the work segment may be the same as an initial state in the work segment.

A specific state in the process of the segment may be an event for triggering a specific state included in another working segment that is processed in parallel to the working segment.

A system modeling method according to an embodiment of the present invention includes identifying devices of a physical system; setting a device segment and a working segment of a virtual system corresponding to the physical system based on the identified physical system operation and a device performing the operation; and modeling the process of the working segment using the state of the device segment. Compiling the process of the working segment and applying it to the virtual control of the virtual system or the physical control of the physical system.

A system interworking method according to an embodiment of the present invention includes: identifying a virtual system corresponding to a physical system; scanning input data transferred from the virtual control of the virtual system to the physical control of the physical system; processing the scanned input data through a first logic performed through physical control of the physical system and a second logic having a mirror relationship, and then applying data changed through the processing result of the input data to the physical system and, the second logic may correspond to a process set in a work segment of a virtual system corresponding to the physical system based on an operation of the physical system and a device performing the operation.

According to an embodiment of the present invention, the interworking relationship between the physical system and the virtual system can be more accurately modeled by modeling the process of each component included in the physical system of the real world in segments through the virtual system of the virtual world. .

According to an embodiment of the present invention, it is possible to more accurately determine the current state of the process of each component included in the physical system in continuous time, and connect the progress of the process of the different components.

According to an embodiment of the present invention, accurate interworking can be performed between systems that apply data scanned from the physical system to the virtual system and apply the result of data processing in the virtual system to the physical system.

1 is a diagram illustrating an overall outline of a virtual physical system according to an embodiment of the present invention.
2 is a diagram for explaining modeling an interworking process between a physical system and a virtual system according to an embodiment of the present invention.
3 is a diagram illustrating a process of modeling a physical system into segments of a virtual system according to an embodiment of the present invention.
4 is a diagram for describing segments constituting a virtual system according to an embodiment of the present invention.
5 is a diagram for explaining the state of a device segment connected to a working segment according to an embodiment of the present invention.
6 is a diagram for describing a relationship between a device of a physical system and a segment of a virtual system according to an embodiment of the present invention.
7 is an example for explaining interworking between a physical system and a virtual system according to an embodiment of the present invention.
8 is a diagram for explaining the progress of a process in a continuous time for each component included in the physical system according to an embodiment of the present invention.
9 is a diagram illustrating a segment of a virtual system corresponding to a physical system and a process example of a segment according to an embodiment of the present invention.
10 is a diagram illustrating a relationship between processes performed in different segments according to an embodiment of the present invention.
11 is a diagram for explaining a current state of a process according to an embodiment of the present invention.
12 is a diagram for explaining a current state corresponding to a process for each segment of a virtual system according to an embodiment of the present invention.

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

1 is a diagram illustrating an overall outline of a virtual physical system according to an embodiment of the present invention.

Referring to FIG. 1 , a linkage relationship between a physical system 101 in the real world and a virtual system 102 in the virtual world is shown. In addition, this interlocking relationship may be modeled or designed (designed) through the computing device 103 for various processes such as control, simulation, synchronization, collection, and analysis.

The physical system 101 may include a plurality of sensors, actuators, and devices such as a controller. In the physical system 101, a specific task may be processed by changing the state of each device according to an event. The virtual system 102 may virtualize and express devices and tasks processed through the devices so that a specific task processed in the physical system 101 is equally reflected in the virtual environment.

The present invention proposes a modeling method that can more effectively control by expressing the interlocking relationship between the physical system 101 and the virtual system 102 . The physical system 101 refers to a set of components operating in the real world, such as all product manufacturing systems, such as an automated facility system, a factory automation system, and an automobile assembly system. In addition, the virtual system 102 refers to a virtualized system that is set in a 1:1 relationship with the physical system 101 to be designed or modeled through the computing device 103 .

That is, the computing device 103 converts devices, which are components included in the physical system 101 of the real world, into digitized virtual modules in the virtual system 102 , and in each of the devices of the physical system 101 . It is possible to model (design) a sequence connected according to time of the changed current state as a process in the same manner in the virtual system 102 .

In other words, the computing device 103 may be viewed as performing a design that maps the relationship between the physical system 101 in the real environment and the virtual system 102 in the virtual environment 1:1. Hereinafter, how to model the interworking process between the physical system 101 and the virtual system 102 will be described in more detail.

2 is a diagram for explaining modeling an interworking process between a physical system and a virtual system according to an embodiment of the present invention.

Referring to FIG. 2 , the physical system 101 may include a plurality of devices such as a sensor, an actuator, and a robot. For example, the sensor constituting the physical system 101 serves to input data to perform physical control in the physical system 101 , and the actuator outputs a specific operation through the physical control of the physical system 101 . play a role The sensor may operate according to an external event occurring outside the physical system 101 .

A device such as a sensor collects data and transmits it to the physical control of the physical system 101 . Then, the data collected by the sensor is stored in the input data area of the physical control, and the data is processed according to the logic preset in the physical control and transmitted to a device such as an actuator.

The computing device 103 may set up a virtual system 102 that can implement the physical system 101 in the same way in a virtual environment, and may model components and operations of the physical system 101 . Devices of the physical system 101 and tasks processed through the devices may be virtualized and modeled through segments.

In this case, the virtual system 102 may perform virtual control corresponding to the physical control of the physical system 101 . A virtual control of the virtual system 102 corresponding to the physical control of the physical system 101 through the computing device 103 may be designed. Then, the logic that is the operation processed through the physical control and the logic that is the operation processed through the virtual control have a mirror relationship with each other. According to an embodiment of the present invention, the devices of the physical system 101 and the process of processing data through the devices may be expressed through segments of the virtual system 102 . In particular, a process of processing data by devices of the physical system 101 may be mapped to a process of a working segment of the virtual system 102 .

As a result, the device of the physical system 101 and the logic processed through the device may be modeled through the segment of the virtual system 102 , and such a modeling operation may be processed through the computing device 103 .

According to an embodiment of the present invention, each of the devices of the physical system 101 or a combination thereof may be designed as a device segment, which is a digitally structured unit in the virtual system 102 . In addition, tasks performed by the devices of the physical system 101 may be expressed as a temporal flow of states representing the state of the device, and a process in which a sequence that is a temporal flow of states is processed in a working segment of the virtual system 102 . can be modeled in correspondence with .

In the physical system 101 , the physical control may control input data derived from a sensor of the physical system 101 to generate output data in an actuator, which is a component of the physical system 101 , through a logical operation.

The computing device 103 may compile a job processed through the device of the physical system 101 and apply it to the physical control of the physical system 101 . In addition, a result of modeling the virtual system 101 corresponding to the physical system 101 in units of segments may be compiled and applied to virtual control of the virtual system 101 .

Through this process, the physical system 101 and the virtual system 102 may be modeled in a twin relationship with each other. Then, digital synchronization in which the actual operation in the physical system 101 is identically performed in the virtual system 102 may be implemented. To this end, the physical control performed in the physical system 101 is reproduced in the same way in the virtual control corresponding to the mirror logic as it is. Then, input data identical to the input data of the physical system 101 is input to the virtual system 102 , and the computing device outputs the same data as the output data of the physical system 101 through virtual control of the virtual system 102 . It can be modeled through (103). When the operation of the physical system 101 and the operation of the virtual system 102 occur identically to each other, it may be defined as digital synchronization.

A real-time interworking process between the physical system 101 and the virtual system 102 will be described below.

(i) Creation of Control Logic and Mirror Logic through compilation

(ii) transfer or share the CPU Input area of the physical system 101 to the Mirror Logic through the Data bus for every CPU Scan

(iii) the virtual system 102 synchronizes the same control in real-time in a virtual environment using Input Data information and Mirror Logic

In this case, the data tracking process in the physical system 101 may use a data tracking method of physical control. Input data from the physical system 101 is acquired by scanning in the virtual control of the virtual system 102 . Processes internal data (Internal Data) and output data (Output Data) as a sequence in the virtual control of the virtual system 102, and transmits input data, internal data, and changed data (Change on demand) among output data to the interface module The data tracking process of the physical system 101 is performed.

Here, input data, internal data, and output data exist in an input data area, an internal data area, and an output data area, data Ara, respectively. Meanwhile, the input data area, the internal data area, and the output data area correspond to physically or at least logically separated memory areas.

Therefore, in order to efficiently perform control and monitoring of the physical system 101 in the virtual system 102, input data, internal data, and output data are stored in separate areas so that only a specific area can be scanned as needed. There are advantages.

Meanwhile, the data tracking process of the virtual system 102 with respect to the physical system 101 proceeds as follows.

(i) The virtual system 102 acquires input data of the physical system 101 for every scan through virtual control.

(ii) The virtual system 102 processes internal data and output data as a sequence-type process through virtual control.

(iii) The virtual system 102 may check the data changed through the process and transmit it to the interface module.

According to an embodiment of the present invention, by modeling the virtual system 102 interworking with the physical system 101 through the computing device 103, application processing such as design, control, simulation, digital synchronization, collection, and analysis is performed. It may be possible.

3 to 6 specifically describe how to model the operation relationship of each of the components included in the physical system 101 by connecting the segment of the virtual system 102 through the segmentation process.

3 is a diagram illustrating a process of modeling a physical system into segments of a virtual system according to an embodiment of the present invention.

Referring to FIG. 3 , a physical system may include various devices such as sensors, actuators, and robots in a real environment. And, a specific task is performed through these devices.

The computing device may model each of the devices of the physical system or a combination thereof as a device segment of the virtual system. The device segment may have state information indicating the current state of the device. In addition, a process in which work is performed in the physical system may be modeled through a work segment of the virtual system. The work segment performs a process, and the process refers to the result of concatenating the state information allocated to the device segment in the form of a sequence. The work process can be expressed hierarchically from the upper level to the lower level according to the setting of the modeling worker.

4 is a diagram for describing segments constituting a virtual system according to an embodiment of the present invention.

Referring to FIG. 4 , the virtual system 102 may be modeled as a plurality of work segments. In virtual system 102, work segments perform specific processes. In this case, the work process may be connected to a device segment modeling the device of the physical system 101 . The process of the working segment can be set by connecting the state information of the device segment in a sequence form. Then, the device segment corresponding to the state information included in the process may be connected to the working segment.

When input data corresponding to a material is generated in the virtual system 102 , output data is finally determined through a process set in each of the plurality of work segments of the virtual system 102 . Control logic derived from input data to output data is performed through the virtual control described with reference to FIG. 2 , and the virtual control has substantially the same relationship as the physical control of the physical system 101 in the real world.

In the virtual system 102 , the output data can be derived from the input data only when the processes set in the working segments 1 to 6 shown in FIG. 4 are all processed. In addition, as the work segment, at least one lower-level work segment may be set. That is, the work segment may be composed of a hierarchy divided according to levels. 4 , the working segment 1 is composed of a working segment 1-1, a working segment 1-2, and a working segment 1-3 at a lower level. Then, all processes set in each of the working segment 1-1, the working segment 1-2, and the working segments 1-3 must be processed, and the entire process of the working segment 1 is terminated.

A process in a work segment can be started in response to an external event. And, when a process starts in a segment, it is not interrupted by an external event until it ends. In addition, the processing result of one work segment may be set as an external event for the process of another work segment to proceed.

5 is a diagram for explaining the state of a device segment connected to a working segment according to an embodiment of the present invention.

In order to model the virtual system 101 corresponding to the physical system 101 1:1, the devices constituting the physical system 101 and the states of each device may correspond to segments of the virtual system 102 . .

According to an embodiment of the present invention, modeling through the computing device 103 may mean setting a plurality of work segments in the virtual system 102 for the work of the physical system 101 . A work segment in the virtual system 102 may be initiated through an external event. In addition, in the virtual system 102, work segments may be hierarchically configured according to levels, and when a process is terminated in the highest work segment, initialization for start/end of the work segment may also be performed by an external event.

When the uppermost working segment is started, the uppermost working segment and all of the lower working segments included in the topmost working segment must all be ended. In addition, the process needs to be set in the working segment so that an infinite loop and deadlock do not occur in the process of starting and ending the working segment.

In the work segment, transmission and reception of data with a target existing outside the virtual system 102 is performed through Interface In and Interface Out. The target referred to herein may be another work segment for the work segment.

When a process in a work segment starts, it continues to the end state and cannot be started further in the middle. A process in a work segment starts in an initial state according to an external event and then progresses to an end state. Even if the work segment enters the end state, the process is not re-executed if it does not return to the initial state according to an external event.

Therefore, initialization of the end state of the process is required for the work segment, and the process may proceed to the initial state through the initialization of the end state. Then, the process is restarted according to the occurrence of an external event. In this case, when the working segment of the upper level is ended, the end state of the working segment of the lower level with respect to the working segment of the upper level may be automatically initialized.

A work segment may be associated with a device segment participating in a process. In FIG. 5 , the process of the working segment 1 may be configured as a state 1 or a state 2 of a turn table that is a device segment. A connection relationship between the device segment and the work segment will be described in detail with reference to FIG. 6 .

6 is a diagram for describing a relationship between a device of a physical system and a segment of a virtual system according to an embodiment of the present invention.

Referring to FIG. 6 , it is assumed that a device included in the physical system 101 is a clamp. The clamp may be in a state of Up and Down. In the physical system 101 , the clamp may be switched between an up state and a down state according to time.

In consideration of the state transition of the device of the physical system 101 , the virtual system 102 corresponding to the physical system 101 may be modeled by the computing device 103 . When modeling the virtual system 102 , each of clamps, pins, contacts, robots, and ROM writers that are devices of the physical system 101 may be modeled as device segments in the virtual system 102 .

In addition, the working segment may be connected to at least one device segment. In FIG. 6 , the working segment is connected to a device segment corresponding to a clamp, a pin, a contact, a robot, and a ROM writer.

The work segment may be set and modeled as a specific work unit performed through the physical system 101 . Then, a device segment corresponding to devices participating in a specific job performed in the physical system 101 may be connected to a job segment corresponding to the specific job.

A device segment may be assigned a plurality of states corresponding to the current state. Then, the process of the working segment means the result of connecting the states of the device segments in a sequence form. For example, the working segment of FIG. 6 includes (i) the down state of the device segment corresponding to the clamp, (ii) the UP state of the device segment corresponding to the pin, (iii) the ADV state of the device segment corresponding to the contact, ( The process can be set in the order of iv) WORK1 state of the device segment corresponding to Robot and (v) WRITE 1 state of the device segment corresponding to RomWriter.

Each of the device segments is in the initial state of the process. That is, the initial state of the process is (i) the UP state of the device segment corresponding to the clamp, (ii) the DOWN state of the device segment corresponding to the pin, (iii) the RTN state of the device segment corresponding to the contact, (iv) the Robot The HOME state of the device segment corresponding to (v) the READY state of the device segment corresponding to the RomWriter.

Then, when an external event occurs for the work segment, the process starts. When an external event occurs, for the device segment connected to the working segment, (i) the down state of the device segment corresponding to the clamp, (ii) the UP state of the device segment corresponding to the pin, (iii) the device segment corresponding to the contact. ADV state, (iv) WORK1 state of the device segment corresponding to Robot, and (v) WRITE 1 state of the device segment corresponding to RomWriter, the process proceeds.

At this time, the end state of the process becomes the same as the initial state of the process. At this time, even if the process enters the end state, it does not automatically enter the initial state, but is converted to the initial state only when an additional external event occurs.

A system modeling method performed by the computing device 103 will be described as follows. The computing device 103 defines a device of the physical system 101 and a specific operation performed through the device. Then, the computing device 103 models the device of the physical system 101 as a device segment of the virtual system 102 . In addition, the computing device 103 may model a specific task performed through the physical system 101 as a work segment of the virtual system 102 and a process of the work segment. The process of the working segment is the result of connecting the states of the device segments in a sequence form, and the initial state of the process is set to be the same as the end state of the process. In addition, the process starts only when an external event occurs in the initial state of the process, and even when the process reaches the end state, an external event must occur before the process enters the initial state again.

7 is an example for explaining interworking between a physical system and a virtual system according to an embodiment of the present invention.

Referring to FIG. 7 , it is assumed that the physical system 101 senses two materials and then transfers them. Then, each device that is a component of the physical system 101 involved in the operation of the physical system 101 may be set.

Thereafter, each device or a combination thereof that is a component of the physical system 101 may be modeled as a device segment of the virtual system 102 according to a specific operation in the computing device 103 . In addition, a specific task performed by the computing device 103 through the device of the physical system 101 is set as a work segment of the virtual system 102 . A working segment is connected to at least one device segment, and a process of the working segment may be modeled by connecting states of the device segment in a sequence form.

8 is a diagram for explaining the progress of a process in a continuous time for each component included in the physical system according to an embodiment of the present invention.

Referring to FIG. 8 , a result of modeling a specific task performed in the physical system 101 to correspond to the virtual system 102 is shown. In this case, when the physical system 101 is modeled as the virtual system 101 , the computing device 103 defines a plurality of devices involved in a specific operation performed through the physical system 101 . In addition, the computing device 103 converts a device (sub-clamp, sub-part, robot, main clamp, main stopper, etc.) participating in a specific operation performed by the physical system 101 as a device segment of the virtual system 102 . Model it. In addition, states of each of the device segments may be repeated according to a cycle. Tasks performed in the physical system 101 may be modeled as work segments in the virtual system 102 . The processes performed in a work segment are related to the logic of a particular task performed in the physical system 101 . And, the process of the working segment can be modeled by connecting the states of the device segment.

In FIG. 6 , a result of connecting states of device segments is modeled as a process of a working segment. The states of the device segments are repeatedly switched according to a cycle.

9 is a diagram illustrating a segment of a virtual system corresponding to a physical system and a process example of a segment according to an embodiment of the present invention.

9 shows a process of modeling a physical system 101 called an automobile factory as a virtual system 102 for a specific operation called a car manufacturing process. At this time, the automobile manufacturing process can be modeled as a high-level work segment called the main buck. In addition, the work of manufacturing the body of the vehicle in the physical system 101 is modeled as a body segment that is a work segment in the virtual system 102 . In addition, the task of assembling the door to the body of the vehicle in the physical system 101 is modeled as a side segment, which is a work segment, in the virtual system 102 . The working segment, body segment and side segment, can be set as a segment at a lower level of the main buck segment.

The process of body segments begins as an external event occurs, such as body data being entered or body parts being transferred. Similarly, the process of a side segment begins when an external event occurs, such as side data being entered or a side part being delivered.

That is, the process of the body segment related to the work of manufacturing the body of the vehicle is started when body data confirmed through a sensor or the like is input. The process of a body segment, which is a working process, is a device such as (1) close clamp on body part, (2) check data on side segment, (3) work on 3 independent robots, (4) open clamp on body part The states of the segment are modeled in the form of a sequence. That is, the body segment is connected to a device segment corresponding to a clamp, a device segment corresponding to a robot, and a device segment corresponding to a sensor for checking data. The process of a body segment can be described as a connection relationship between states of device segments connected to the body segment. At this time, even if the process of the body segment becomes the clamp open state that is the end state, it must be initialized through an external event to be converted to the initial clamp open state. That is, the initial state of the body segment is clamp open, and the process starts from clamp close, which is the first state of the process according to an external event.

And, the process of side segment is (1) gate lifting to loading position, (2) closing clamp on side part, (3) gate lifting sequence to setting position, (4) side sliding forward, (5) side sliding backward And it is modeled in the form of a sequence for the states of the device segment, such as opening the side part clamp.

The body segment and the side segment operate in parallel with each other, but the process of one segment may be applied as an external event of the process of the other segment. A specific state in the process of the body segment (eg, body-side data check) acts as an external event to the process of the side segment that is processed in parallel with the body segment. Similarly, in the process of the side segment, a specific state (eg, side sliding backward and opening the side part clamp) is performed according to the processing result of the specific state (eg, opening the body part clamp) in the process of the body segment. The segment of the Main Buck is finally finished only when the body segment and the side segment, which are the lower-level work segments, are finished.

10 is a diagram illustrating a relationship between processes performed in different segments according to an embodiment of the present invention.

FIG. 10 describes a process in which the processes of the body segment and the side segment described in FIG. 9 are linked through a timing diagram. Referring to FIG. 10 , when the side segment process is converted to a state called side slide, the state is changed to a robot operation of the body segment that is processed in parallel with the side segment.

That is, according to an embodiment of the present invention, the virtual system 102 corresponding to the physical system 101 only by setting a temporal precedence relationship or a triggering condition between states constituting the process for a process between different segments. modeling may be possible.

11 is a diagram for explaining a current state of a process according to an embodiment of the present invention.

11 , a progress state of a state of a device segment connected to a work segment for modeling the virtual system 102 may be divided into a cycle start (CS) and a cycle end (CE). In the case of FIG. 11 , the state of a specific device segment repeatedly progresses according to a cycle, and the current progress state of the device segment may be described by being mapped to normalized values ranging from 0 to 1 from start to end. Since the processing speed from start to end per cycle is different for each device segment, the progress of all device segments can be normalized from 0 to 1.

And, the state progress in the device segment is determined through specific coordinates (ex. spherical coordinate system- {θ, φ, r} = {f(x), g(x), h(x)} (x =tick)) can be explained.

θ represents a continuous value of a device corresponding to a device segment, and represents the following relationship.

If θ = 0 then C.S, C.E = {false, false}

If 0 < θ < 1 then C.S, C.E = {true, false}

If θ = 1 then C.S, C.E = {true ,true}

θ can determine which position is reached between the start and end of the normalized cycle of a specific device, and through this, the progress of the state of the corresponding device segment can be checked.

Here, φ means a layer (φ { 0 ≤ φ ≤ 1 }: State Layer) indicating the progress of the device segment. With respect to the layer, it can be divided into a single layer if g(x) = φ = 0, and a multi layer if 0 < φ < 1.

Meanwhile, r represents an activation state value (r { 0 ≤ r ≤ 1 }: Activation Value) of a device segment, and it is possible to determine whether a device corresponding to the device segment is abnormal. In this case, if h(x) = r = 1, it represents a Normal condition, and if r < 1, it represents an Abnormal Condition.

12 is a diagram for explaining a current state corresponding to a process for each segment of a virtual system according to an embodiment of the present invention.

12A shows an embossing operation to imprint a specific character on a material. The embossing operation is performed by devices such as cylinder A and cylinder B of the physical system, which is an embossing apparatus.

If the operation of the embossing apparatus corresponding to the physical system 101 is modeled as a working segment of the virtual system 102 and a process of the working segment, it may be represented by A of FIG. 12 . In the case of A of FIG. 12, the material is imprinted on the material through the switching process of the UP/DOWN state in the device segment of cylinder A, and the device segment of cylinder B advances the material to the position of cylinder A or backwards returning to the original position. State transition process. At this time, the forward state of the cylinder A is expressed as A-, and the reverse state is expressed as A+. And, the forward state of cylinder B is expressed as B-, and the reverse state is expressed as B+. In addition, a result of connecting the state of cylinder A, which is the device segment, and the state of, cylinder B, which is the device segment, according to the embossing operation may be modeled as a process in the working segment of the embossing operation.

At this time, the device segment of the cylinder A and the device segment of the cylinder B may be connected for a work segment called an embossing operation. And, in the work segment of the embossing device, the process of the work segment starts only when an external event called button ON occurs.

The process of the work segment, called embossing, consists of (1) forward state of cylinder A (A-), (2) reverse state of cylinder A (A+), and (3) forward state of cylinder A (A-) of device segment A. proceeds in order.

If Start On event then Cylinder A forward command (self-holding)

If Cylinder A + then Cylinder A reverse command (self-holding)

If Cylinder A - Rising Edge then C.E(A) is ON

If Start Off event then C.E(A) is OFF

The process of the working segment, called embossing, consists of (1) the forward state of cylinder B (B-), (2) the reverse state of cylinder B (B+), and (3) the reverse state of cylinder B (B-) of device segment B. proceeds in order.

During the process of the working segment, the forward state (B-) of cylinder B, which is the device segment, is changed after switching from the device segment, segment A, to the forward state (A-) of cylinder A.

And, the process of the work segment for the embossing operation is started according to an external event of a button ON for the embossing device, and is initialized in an end state according to an external event of a button OFF for the embossing device. Then, the end state of the process may be converted to the initial state of the process through an external event called button OFF. This is expressed as:

If Cylinder A - & C.E(A) then Cylinder B Forward

If Cylinder B + then Cylinder B reverse command (self-holding)

Referring to FIG. 12B , the progress state (from start to end) of the state of the device segment connected to the work process of the embossing apparatus is expressed as a cycle, and the cycle of the device segment is repeated as a process of state transition. It can be modeled as a device segment corresponding to cylinder A and a device segment corresponding to cylinder B, which are devices constituting a physical system called an embossing apparatus.

In the cycle for the device segment of cylinder A, θ represents the progress of the process of cylinder A. And, in the cycle for the device segment of the cylinder A, φ represents the state (A- or A+) for the device segment of the cylinder A. Similarly, in the cycle for the device segment of cylinder B, θ represents the progress of the process of cylinder B. And, in the cycle for the device segment of cylinder B, φ represents the state (B- or B+) in the process of cylinder B. Through the cycle for each device segment of cylinder A and cylinder B, the overall progress of the working segment of the embossing operation can be visually grasped.

Meanwhile, the method according to the present invention is written as a program that can be executed on a computer and can be implemented in various recording media such as magnetic storage media, optical reading media, and digital storage media.

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or combinations thereof. Implementations may be implemented for processing by, or for controlling the operation of, a data processing device, eg, a programmable processor, computer, or number of computers, a computer program product, ie an information carrier, eg, a machine readable storage It may be embodied as a computer program tangibly embodied in an apparatus (computer readable medium) or a radio signal. A computer program, such as the computer program(s) described above, may be written in any form of programming language, including compiled or interpreted languages, as a standalone program or in a module, component, subroutine, or computing environment. It can be deployed in any form including as other units suitable for use. A computer program may be deployed to be processed on one computer or multiple computers at one site or to be distributed across multiple sites and interconnected by a communications network.

Processors suitable for processing a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. In general, a processor will receive instructions and data from either read-only memory or random access memory or both. Elements of a computer may include at least one processor that executes instructions and one or more memory devices that store instructions and data. In general, a computer may include, receive data from, transmit data to, or both, one or more mass storage devices for storing data, for example magnetic, magneto-optical disks, or optical disks. may be combined to become Information carriers suitable for embodying computer program instructions and data are, for example, semiconductor memory devices, for example, magnetic media such as hard disks, floppy disks and magnetic tapes, Compact Disk Read Only Memory (CD-ROM). ), optical recording media such as DVD (Digital Video Disk), magneto-optical media such as optical disk, ROM (Read Only Memory), RAM (RAM) , Random Access Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), and the like. Processors and memories may be supplemented by, or included in, special purpose logic circuitry.

In addition, the computer-readable medium may be any available medium that can be accessed by a computer, and may include both computer storage media and transmission media.

While this specification contains numerous specific implementation details, they should not be construed as limitations on the scope of any invention or claim, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. should be understood Certain features that are described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although features operate in a particular combination and may be initially depicted as claimed as such, one or more features from a claimed combination may in some cases be excluded from the combination, the claimed combination being a sub-combination. or a variant of a sub-combination.

Likewise, although acts are depicted in the drawings in a particular order, it should not be construed that all acts shown must be performed or that such acts must be performed in the specific order or sequential order shown to obtain desirable results. In certain cases, multitasking and parallel processing may be advantageous. Further, the separation of the various device components of the above-described embodiments should not be construed as requiring such separation in all embodiments, and the program components and devices described may generally be integrated together into a single software product or packaged into multiple software products. You have to understand that you can.

On the other hand, the embodiments of the present invention disclosed in the present specification and drawings are merely presented as specific examples to aid understanding, and are not intended to limit the scope of the present invention. It will be apparent to those of ordinary skill in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

Claims (13)

identifying devices of a physical system performed by a computing device;
setting a segment of a virtual system corresponding to the physical system based on the identified task of the physical system and a device performing the task; and
modeling a virtual system through the set segment
including,
The segment includes (i) a plurality of work segments corresponding to the work of the physical system and (ii) a device segment corresponding to a device performing the work of the physical system,
The process of the working segment is set by connecting the states of the device segment in a sequence form,
The process of the work segment starts according to an external event, and when a process starts, it is not interrupted by an external event until it ends,
A system modeling method in which a processing result of any one of the plurality of work segments is set as an external event for a process of another work segment to proceed. delete delete delete According to claim 1,
The process is
A system modeling method that is a result of setting the temporal and spatial event flow for the work of the physical system for the work segment of the virtual system. According to claim 1,
The process is
A system modeling method set by connecting states of at least one device segment connected to the working segment in a sequence form. According to claim 1,
The process of the working segment is
A method for modeling a system wherein the first event for the working segment is started in an initial state if it exists, and the end state of the process is transitioned to the initial state according to a second event for the working segment. According to claim 1,
The process of the working segment is
At least among information normalizing a continuous time during which the process of the working segment is performed, information indicating the state of a device segment constituting the process of the working segment, and information indicating the degree of abnormality of a device corresponding to the device segment A system modeling method expressed through a single piece of information. According to claim 1,
The working segment is
A system modeling method that can be set according to the hierarchy from a higher level to a lower level, and that the work segments of the highest level end only when all work segments of the lower level are closed. According to claim 1,
An end state in the process of the work segment is the same as an initial state in the work segment. According to claim 1,
A method for modeling a system wherein a specific state in the process of the segment may be an event for triggering a specific state included in another working segment that is processed in parallel to the working segment. identifying devices in the physical system;
setting a device segment and a working segment of a virtual system corresponding to the physical system based on the identified physical system operation and a device performing the operation; and
modeling the process of the working segment using the state of the device segment;
Compiling the process of the working segment and applying it to the virtual control of the virtual system or the physical control of the physical system
including,
The process of the working segment is set by connecting the states of the device segment in a sequence form,
The process of the work segment starts according to an external event, and when a process starts, it is not interrupted by an external event until it ends,
A system modeling method in which a processing result of one work segment among a plurality of work segments is set as an external event for a process of another work segment to proceed. delete

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