JP2008077464A - Modeling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a model creating device for a measurement controller capable of simulation with an object-oriented programming technique adopted without requiring a software technology in development of an electronically controlled vehicle. <P>SOLUTION: A vehicle model creating divides respective parts of a vehicle for modeling into the finite number of model components, creates an integrated model of a vehicle with the model components consistently connected, configures model component hardware and software independently, designs according to implementation format, provides a user with the integrated model of the vehicle for modeling, the model components, or later added model components, and automatically generates an execute form program file of the model component by altering a program of a software portion of the model component. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle model creation device and system, and more particularly, by making a functional model of components of a vehicle to be modeled, and by operating the model creation device from a screen or changing and adding a model from a network. The present invention relates to a model creation device having an actual vehicle simulation function that makes it possible to change the function / performance of a vehicle model.

  In recent years, with the spread of vehicle electronic control methods, the functions and performances of vehicles have become more complex, and in the design of vehicles, examples of designing in combination with measurement control devices in addition to mechanical elements are increasing.

  In the development of these electronically controlled vehicles, the controlled object has many mechanical elements and often understands and designs individual functions, and requires engineers related to the controlled object. In the development of the measurement control part, an electronic circuit engineer, A large number of engineers such as control engineers, software engineers, etc. are required, and these technical fields may differ from each other. In the development of electronically controlled vehicles, they are often used for prototyping, mounting, and verification. It took time to.

  In the development of such an electronically controlled vehicle, the control items increase, and in order to improve the efficiency of prototyping, mounting, and verification of design errors, etc., the verification is advanced and the control target or measurement control part is combined. A model-based development method that substitutes either model for verification with a model is adopted. Furthermore, an actual machine simulation is performed in which an actual vehicle is actually operated using the same input / output signals as the created vehicle model.

  In model-based development, a component part of a vehicle is divided into model component parts, converted into a functional model, and an integrated model of the vehicle as an aggregate of functional models is created. For software that creates these functional models, there is a language-independent, consistent software description method from design to system maintenance by clarifying the software design objectives recently called object-oriented programming. It is popular. About these object-oriented programming techniques, "Object-oriented methodology OMT" 1992 Toppan Printing Co., Ltd. issued a manual.

Translated by Eiichi Hanyuda Object Oriented Methodology OMT 1992 Toppan Printing Co., Ltd.

  Using a consistent software description method from design to system maintenance that does not depend on this language, the electronic circuit engineer and control engineer are responsible for the details of the software technology in the development of electronically controlled vehicle models. Generalization of the measurement control part without knowledge of the system, and the programming technique using the hierarchical object-oriented description and the graphical notation method, at the time of vehicle model construction, performance / function change time, and maintenance time The division of labor is possible.

  A specific programming language is required to operate specific hardware and software for realizing a model creation system with an actual machine simulation function, and to automatically generate an executable program file of model components. Recently, there is Simulink software that is relatively easily available as a programming language that can perform object-oriented programming and can automatically generate an executable program file.

In addition, if there is a need to change the parts of the vehicle to be modeled, there are many requests for a model creation device that can be easily changed by a field engineer at the site of use, and does not affect the overall system. There are many requests to implement partial changes in
For this purpose, there is a need for a model creation device that can easily perform a partial change without requiring knowledge of the entire system and that easily confirms and guarantees the operation of the entire system when the partial change is made.

  There exists patent document 1 as these trials. The concept of circuit sharing and “virtual measuring instrument” on the screen can be said to be the same. However, the measuring instrument assumed in Patent Document 1 is for assembling and changing only the function of the measuring instrument, and is a model creation device including an actual machine simulation function for the purpose of changing the entire vehicle and components. It can not be said.

Japanese Patent No. 3016783

  In the development of electronically controlled vehicles, electronic circuit engineers and control engineers related to measurement control parts do not need software technology to design and change parts of vehicle parts including measurement control parts. Incorporates hierarchical object-oriented description and object-oriented programming techniques using graphical notation methods, functionally models the measurement control parts of each vehicle part, verifies the created software, and matches the actual machine to be controlled There is a need for a model creation device capable of simulation.

  These model creation devices do not require knowledge of software technology, and can be operated with only knowledge of the technical elements of measurement and control, so that intuitive modeling techniques can be realized and equivalent to general-purpose computer techniques. Realization of graphic display incorporating operation and display functions is desired.

  In the simulation system for vehicle measurement and control used in conventional development, the measurement device, analysis device, simulation device, and control device necessary to build the system are configured independently and created on the simulation device. The motion model can only be used for simulation purposes. In order to incorporate the motion model into the control device, it is necessary to separately program the operation model, and also to perform programming necessary for the control part of the measurement device. I had to.

  In the present invention, a construction engineer of a model creation system having an actual machine simulation function including a measurement control part of an electronically controlled vehicle usually has knowledge of a measurement control object, knowledge of electric circuit / software technology, and measurement. In response to the fact that knowledge of the control part was required and division of labor was difficult, a model creation system with a real machine simulation function was generalized, and a hierarchical object-oriented description and graphical notation method were used as programming techniques. It is intended to be used for division of labor at the time of construction of the model creation system, the time of performance / function change, and the time of maintenance.

  In addition, when a partial modification of a model creation system with an actual machine simulation function is required, there are many requests for a model creation system that can be easily modified by a field engineer at the site of use, and the entire system is not affected. There are many requests to realize partial changes in the range. For this purpose, a system is required that can be easily changed without requiring knowledge of the entire system and software, and can easily confirm and guarantee the operation of the entire system when the partial change is made. ing.

  For this purpose, a model creation system with an actual machine simulation function needs to be divided into a model component part by dividing the structure and structure of the entire model into model component parts, and a functionalization modeled block and a modeling notation method are required. Is done. Also, a hierarchical structure notation method is required to understand the relationship between the overall model and the components. In addition, a notation method using an energy notation operation model capable of expressing the physical movement of the device is desired as a notation method in which the relationship between components can be intuitively understood.

  Furthermore, in order to support a model creation system with a real machine simulation function including various control targets, the hierarchized component parts can be integrated as a whole, and each component part can be reused. It must be possible and possible.

  In addition, even if the overall model of the model creation system with the actual machine simulation function or the software of the constituent parts is completed with the operation model as described above, it is necessary to use the operation model to check the built-in operation in the actual control device. A simulation function for operating an actual machine is required. For this purpose, each functional model needs to have substantially the same function as the actual machine or each component of the actual machine.

  There are various ways to add / change new models or components even if the whole model of the model creation system with actual machine simulation function and the notation method of each component is expressed by intuitive modeling methods. There are methods, and it can be said that it is difficult at this stage to design all of them with consistency. For this purpose, a notation tool is required to describe the entire model and the notation method of each component and the items necessary for notation in the overall model of the model creation system and the design stage of each component. Has been.

  Furthermore, in order to realize the overall model of the model creation system with actual machine simulation function and the consistency of each component, the range of design possibility is determined by the graphical user interface (GUI) method using the operation unit and display unit. There is a need for a GUI design method for design while restricting display and selecting consistent design conditions.

  In addition, the overall model of the model creation system that has been designed once and the model creation system, and whether each component is consistent and functioning as a whole are displayed. Simulation techniques are also desired.

  In addition, there is already an overall model of a model creation system with an actual machine simulation function, and this consistency check and overall system check are particularly necessary when a new component is added or changed. .

  Furthermore, even if the overall model of the model creation system with the actual machine simulation function or the software of the component part is completed with the operation model as described above, in order to check the built-in operation in the actual control device, the operation model There is also a need for the ability to generate a real programming language.

In addition, when an integrated model that has been completed once is used to change the design of individual parts, replace software of other measurement control devices, or check the performance, the parts of the entire model can be understood even if the structure and structure are unknown. If the performance can be confirmed and the overall performance is known, the measurement control device and system are often regarded as no problem.
Therefore, the software of the individual parts is made into functional blocks and the description method is unified so that the connectivity of the individual parts is facilitated, even in the new design of the measurement control device and system. However, it can be expected that the degree of freedom in adding functions and changing methods to the measurement control device and system will increase greatly.

  In addition, the model creation system with actual machine simulation functions is available in various environments, including voltage / current / impedance measuring instruments, vibration analyzers, waveform analyzers, pressure / force measuring instruments, measuring instruments, analyzers, and biological signal analyzers. Thus, depending on the application, it is often used as a measurement and control system by connecting with external control equipment, and while maintaining functions and performance at all times, the need to respond quickly when a problem occurs is increasing. . For this purpose, a measurement control system having the same configuration in order to quickly find performance / functions or failure points in a similar manner with respect to the measurement control system is considered to be an extremely effective method in terms of maintainability.

  In view of these circumstances, a model creation system with an actual machine simulation function is created with a method that has consistency of the entire model and the component parts that make up each component, and customization of each is only available for the related software It is possible to change the function and performance of the model creation system with the actual machine simulation function as a whole model and the components constituting each component by changing the software, and the simulation of the actual vehicle can be confirmed A model builder was devised for creating a model for the overall model and the component parts that make up each component.

  Model builder for model creation system with real machine simulation function of the present invention is an object-oriented system analysis method and system construction method that is widely used as a software production method recently. It is used in the design method of hardware and software, and is realized by a highly versatile design method by constructing a measurement / control system with each configuration model and an integrated model.

  In order to realize a model creation system having an actual machine simulation function according to the present invention by operating from the screen or changing the software from the network, the model creation system having an actual machine simulation function is limited. When the functions are determined by circuit elements, such as signal input parts, each part is designed with an electronic circuit incorporating the possibility of change, and each part can be controlled by software. In addition, the parts that can be changed by software, such as the arithmetic / signal processing part, are realized by making the software into functional blocks.

  In order to realize a model creation system with a real machine simulation function that can handle various applications by operating from the screen or changing the software from the network, the software is made into functional blocks, discrete event control, The unique methods of logic control and numerical control must be integrated seamlessly, and are realized by new concepts, modeling techniques, and programming techniques.

  Furthermore, the whole model of the model creation system having a real machine simulation function and the notation method of each component element are expressed in a hierarchical model, and the individual parts are functionally independent for the construction and connection method of each model, and A design method was used so that the functional performance did not lose consistency by model construction and connection method. As a result, it is possible to change individual parts only with software, and it is also possible to change and add software on an external network. At this time, it is effective for management that the individual functional elements are independent and have a hierarchical structure.

  In order to operate the measurement / control apparatus according to this method, it is necessary to implement specific hardware and software using a specific programming language. However, in the present invention, the Simulink software is installed. Used.

  In this object-oriented programming language, the type of language is not important as long as the structure used in the language is an object-oriented programming language similar to the structure of the present invention.

  The present invention uses a directed modeling method having an input / output terminal structure for each functional part constituting a model creation system, and makes the functional part common as a directed modeling structure to facilitate system integration. . By using the directional input / output terminal signal, it is easy to check the connection consistency of the individual components. Further, as a system construction method, a top-down design method is used in which the functional performance does not lose the consistency due to the model construction and connection method.

  For this purpose, it is necessary to unify the system description method so that the functional performance does not lose consistency by the model construction and connection method. For this purpose, the present invention requires the structure of the integrated model, The description method is unified, and the consistency check method in the integrated model is used.

There are the following requirements for the unified description method and the structure of the integrated model.
1) Having a hierarchical structure 2) Hierarchized models must be integrated.
3) Each part of the model once created can be reused. 4) The function to be described is an energy notation operation model that can express the physical movement of the equipment. 5) The electrical connection that controls measurement and control must be indicated. There is no confirmation means

  There are various methods for adding and changing new measurement control systems or components even if the whole model of the model creation system and the notation method of each component are expressed by a modeling method that can be intuitively understood. It can be said that it is difficult at this stage to design all these designs with consistency. For this purpose, the model builder as a notation tool to describe the overall model and the notation method of each component and the items required for notation without omission in the overall model of the model creation system and the design stage of each component Is used, and the notation method is selected according to the composition screen prepared in advance.

  The configuration screen uses the window notation method used in general-purpose computers, and the overall model of the main part of this model builder and the designer window that designs each component match the same function screen to the intended use of the designer. Use icons, dialogs, and mouse for the energy view that expresses the energy state and movement amount between each block, the measurement control view that shows the measurement signal and control signal, and the layout view that shows the connection state with the measurement control part. And can be selected and displayed.

  Furthermore, in order to realize consistency of the entire model of the model creation system and each component, a design window is used when a model is newly designed or changed, and items and ranges of design possibility are set. A design method is used in which design is performed while selecting consistent design conditions by selecting and setting the displayed items.

  Furthermore, in order to assist the operator's design by utilizing the multifaceted nature of the window notation method, in addition to the designer window, a model component storage unit is provided for each individual functional element that can be used when creating an overall model in the designer window. A library window that displays saved library files is used.

  Also, when performing actual machine simulation, control of the modeling target is often performed using a control device such as an ECU, and the actual machine modeling target is operated by the RPT and ECU that operate the actual machine modeling target only by software. However, there are increasing methods of using an ECU as a control device, such as an HIL that is partially operated by software, or using a model creation system such as the present invention instead of the ECU according to the purpose.

  In the model creation system, an RPT / HIL window is provided, and loads such as real machine simulation in software, HIL, and creation of logic circuits for individual control are loaded when designing in a designer window.

  With these methods, this model builder can create a real machine simulation with the created measurement and control model, and the model of each component by GUI method using the operation unit / display unit. RPT, HIL system A model builder that can be connected is realized.

  That is, in the model creation device, each part of the vehicle to be modeled is divided into a finite number of model components, and an integrated model of the vehicle in which the model components are connected with consistency is created, The model component hardware and software are independently configured, designed according to the implementation format, and the user is provided with an integrated model of the vehicle to be modeled, a model component, or a model component to be added later, By changing the program of the software part of the model component, the function / performance of the vehicle to be modeled can be changed, and a program file of the execution format of the model component is automatically generated. It is a model creation device.

In addition, from the components, each part of the vehicle to be modeled is represented as a model component, and the integrated model of the vehicle is represented by a graphic method that represents hardware and software, and each model component is connected as a directed system ( 1) means for generating and displaying icons indicating hardware and software for the model components and the integrated model on a display of a graphical user interface;
(2) On the display, on the basis of an operation from the input unit, the attribute of the icon is given, and at the same time, the icon is arranged at a designated position;
(3) On the display, the icon is connected as a directed system, and at the same time, the attribute of the connection condition and the means for determining the relationship between the connection method and the connection terminal corresponding to the icon;
(4) Consistency verification means for selectively displaying only icons that can be used to establish consistency between the model components of the icons displayed on the display;
(5) Sources of hardware and software functions of the model component, display icons, attributes of connection conditions to be connected as a directed system between model components, and a fixed relationship between the previous connection methods Means for storing as program data;
(6) means for generating an executable control program from the source program data;
(7) A vehicle model creation device including means for executing the executable control program.

  Means for generating and displaying icons indicating hardware and software for the model component and the vehicle integrated model on the display of the graphical user interface is a hierarchical structure from the vehicle integrated model to the model component. The method for generating and displaying icons indicating the hardware and software of the model component is provided with an energy view, a measurement control view, and an arrangement view display function for each model component. A vehicle model creation device.

  Consistency verification means for selectively displaying only icons that can establish the consistency of each other's model components as icons displayed on the display is a designer that selectively displays only icons that can establish consistency on the display. It can also be said to be a vehicle model creation device characterized by having a window.

  Conventionally, the measurement device, analysis device, simulation device, and control device required to construct an automatic control system are configured separately and the operation model created on the simulation device can only be used for simulation purposes. In order to incorporate the operation model into the control device, it was necessary to separately program the operation model, and the software engineer had to create programming necessary for controlling the measurement device.

  The operation model notation method and simulation method of the present invention provide an operation model that enables engineers in the field of mechatronics who electronically control operations involving physical movement of equipment to intuitively understand the model, and is complicated. Since the measurement and control connection is not displayed, even if a specification change or trouble occurs in the control target system while the actual machine simulation operation is performed with the control target connected, which part of the model has been changed and which It becomes easy to pursue whether there is a cause of trouble in the part, leading to a fundamental solution.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows a display example of an overall integrated model including each component of a vehicle by a vehicle model creation device according to the present invention.

  As shown in FIG. 1, the model creation apparatus is a modeled vehicle and a measurement control part. For example, as shown in an overall configuration diagram of FIG. 2 as an example of use of a model creation device for a vehicle performance test, a throttle control unit 10, an engine control unit 13, a transmission (torque converter) control unit 17, a brake control unit 22, And a plurality of measurement control parts of a dynamometer control unit 38 for measuring the traveling speed of the vehicle.

  FIG. 2 is an overall configuration diagram in which a vehicle as a model creation system having an actual machine simulation function of the present invention, and a model creation apparatus for each part and a dynamometer for performance test in actual machine simulation are displayed simultaneously. The model creation system includes a control unit 6 that controls measurement and control, a dynamometer control unit 38 that measures the running speed and torque of the vehicle during actual simulation, a measurement unit 50 that controls measurement, a model simulation unit 60, The display unit 40 includes a system control unit 41 and an operation unit 42.

  In the measuring unit 50, the input unit 51 has an analog input having an AD converter and a digital input, and the model simulation unit has a digital output. Since the measurement and control of the part is performed, models can be created using these functions that input arbitrary signals at arbitrary timing, period, resolution, sampling interval, etc., and output control signals to the outside. It is also possible to use the device using an external network.

FIG. 1 shows a display example of an overall model obtained by modeling each part of these vehicles and the measurement control part. In FIG. 1, the overall model of the vehicle is divided into individual components and displayed as an engine M11, a clutch M12, a transmission (torque converter) M13, a differential M14, a wheel M15, and a vehicle body M16, and a driver as a control part thereof. A model M17, an ECU M21 for controlling the engine, an ECU M22 for controlling the transmission (torque converter), and measurement control devices M31 to M34 including a model creation device are displayed.

  The individual components displayed in FIG. 1 correspond to the overall configuration of FIG. 2, model the individual components of the configuration content, and represent the individual functional elements with icons that are easy to understand for the operator. In FIG. 1, the energy between the individual components and the connection state of the signals are displayed by solid lines or broken lines so that the operator can intuitively understand whether there is a relationship between the individual component parts.

  The individual components displayed in FIG. 1 are expressed by modeling the individual component parts with six components. As a diagram that allows the operator to intuitively understand whether or not there is a relationship between the individual constituent parts, a unified notation method is important as a first layer of a hierarchical structure notation with a finite number of constituent elements of about ten. The second and lower layers are expected to be different depending on the purpose of use, and can be realized by using a unified notation method of individual blocks having input / output signal consistency, and the number is not a problem.

  The object of the present invention is to make it possible to easily make a partial change without requiring software knowledge, and to easily confirm and guarantee the operation of the entire system when the partial change is made. It is another object of the present invention to provide a model creation apparatus that can be realized by operating the modeled display screen shown in FIG. 1 without being conscious of individual components. The details of the model creation apparatus according to the embodiment of the present invention will be described below with reference to the drawings.

  The entire configuration shown in FIG. 2 and individual components are modeled and displayed on the modeled display screen shown in FIG. 1, and partial changes can be made without requiring software knowledge. A model builder was devised as a tool for creating simulation software for a model creation device that can measure and control actual vehicles.

  The model builder is software executed using the model simulation unit 60, the display unit 40, the system control unit 41, and the operation unit 42 shown in FIG. 2, and its configuration is shown in FIG. As shown in FIG. 3, the model builder creates a library of modeled blocks and input / output parameters related to the blocks in a file format and stores them in the model component storage unit. From the display unit and the operation unit, the model creation unit 61 A method of modeling by combining block libraries is used.

  In the simulation unit 64, simulation codes are generated from the individual component models created by the model creation unit 61 using Simulink, a soft simulation is executed, and the simulation results are displayed on the display unit 40.

  The model created by the model creation unit 61 is output as a Simulink model, or is decoded and output into an executable file format such as C code for measuring and controlling an actual machine. When simulating a real machine to be controlled, it is transmitted to the control unit 6 via the control value setting / correction unit 63.

The basic structure of the model builder software is that the programming technique is a hierarchical object-oriented description, and as a functional block with certain functions created by object elements, the types of components related to this software component and their attributes and configuration A file in which the relationship between elements is recorded as data is combined into a block as a software component.
In addition, for the functional blocks, the description method is in a directed format, and an interface definition between libraries, a block library management indicator, a block display icon, and an input / output parameter file are provided.

  In addition, in the past software subroutines, it was possible to maintain independence by functional blocks that defined I / O signal conditions, and to perform consistent operations even if blocks were connected and integrated. This is the same as the design method.

  A functional block is a combination of individual software components, and includes logic operators, circuit elements, control elements, and hardware circuits such as AD converters, DA converters, filters, and switches that handle actual measurement control. Can be used in combination with functional blocks, numerical data tables, and so on. The modeling object is an abstraction of a control object, a part that controls the control object, and an actual measurement control object of the sensor from a functional aspect by a mathematical model, a physical model, or the like.

In order to connect and use this function block without the need for software knowledge, the function block display and the connectable parameters and conditions are displayed on the graphical user interface (GUI) display for connection and use. Yes.
In the present invention, since the integrated model has consistency even when the individual components are connected to perform the integrated operation, independence is maintained by a finite number of individual components, and the individual components are connected and integrated. In order to maintain consistency even when operated, signal items, signal notation units, and signal ranges of input / output signals of individual components are obtained in advance according to the selected component, and are selectively displayed on the GUI. The display method is used.

Consistency check of the functional block is performed by the consistency detection means in the model creation unit (61 in FIG. 2), and the icon displayed on the GUI is selected for each component for each component. Using the library stored in the model component storage unit as a file, the connectable component, the signal direction of the input / output terminal, and the consistency content set in the connectable signal item are selected and displayed. In addition, notation display is used when signal items, signal notation units, and signal ranges are diverse, and there are also check boxes for setting use / non-use by the operator, confirmation of incorrect setting / incorrect connection, and alarm display functions. is doing.
Hereinafter, the structure of this model builder will be described.

  The window configuration displayed on the model builder GUI display is shown in FIG. As shown in FIG. 4, a designer window for creating and editing a model, a library window for displaying a saved library for design, a parameter window for displaying parameters that can be set in the model, and the states of a plurality of measurement control devices are displayed. It consists of a main window that includes a target information window and a designer, library, and parameter window.

Further, the designer window can be selectively displayed in the energy view, the measurement control view, and the arrangement view as shown in FIG. 5 according to the necessity of the display items of the operator. FIG. 5a shows that the individual components are physically connected in an energy relationship in the energy view and can be read from the library window by drag and drop with the mouse. Can understand the outline of the overall model. FIG. 5B is a measurement control view. For example, when an ECU block is read from the library window by dragging and dropping with a mouse, the ECU is displayed as an object. If you drag the mouse here, the connection line of the control terminal will be displayed.
In this view, the interface of the control terminal connection line can be defined. FIG. 5c is a diagram showing the connection relationship with the measurement control device in the arrangement view, and the measurement control device is read from the library window by dragging and dropping with the mouse. Assigning individual components and measurement control devices, defining control line interfaces, etc.

When modeling or changing a model, a design window is opened by clicking an individual component displayed in the measurement control view. In the example of FIG. 6, the clutch ECU in the overall model in FIG.
The example of a display of the design window of M22 is shown.

  When an ECU displayed in the measurement control view (FIG. 5b) of each component is clicked, the input / output terminals of the ECU capable of performing the system definition shown in FIG. 6a are displayed. This displayed input / output terminal displays the presettable input / output terminals of the ECU to prevent erroneous connection.

As for the input / output terminals, for example, the connection signals between the engine M11 and the ECU M21 are classified into the input / output considering the directivity, as shown in FIG. The connection input / output signal selection window is displayed, and you can select whether to use it by checking or erasing the check box for that item.
In the case of newly adding, new addition or deletion is performed in the new terminal editing window shown in FIG. 7b.

FIG. 8 is a flowchart illustrating a method for newly creating or remodeling individual components using this model builder. FIG. 8A shows an overall flow chart of the measurement control apparatus using this model builder, and FIG. 8B is a flow chart of individual component production / design (S15) in the case of new design or change of individual components.
Here, a procedure for changing individual components will be described.

In FIG. 8a, the entire model created in advance of the model creation device in FIG. 8a and stored in the model component storage unit and the model of the component are read (S10). When each component corresponds to the hardware of the model creation device It is checked whether hardware is installed and functionally and electrically connected as a system (S11). Next, connection / disconnection confirmation of hardware input / output signals of the model creating apparatus and individual components is performed (S12).
The steps (S11) and (S12) may not be used during a simulation operation using only software.

  The overall model of the model creation apparatus including the individual components is displayed on the display unit 40 using the operation unit 42 of the measurement control apparatus, thereby confirming the operation of the modeled overall model (S14).

  FIG. 8b shows a flowchart for changing individual components, for example, a change procedure when changing a model of a torque converter as an individual component. First, when a torque converter icon in the measurement control view (FIG. 5b) on the design screen in the GUI is clicked, a model notation diagram of the torque converter shown in FIG. 6b is displayed. In the model notation diagram of the torque converter shown in FIG. 6B, a model for obtaining the torque from the ratio between the engine speed and the torque converter speed and then obtaining the speed from the inertia value of the torque converter is expressed by functional elements.

Further, when displaying the signal connection state of the ECU that controls the torque converter, the connection definition window is displayed by clicking the ECU icon in FIG. 5B, and the signal content can be confirmed or the signal content can be changed (SA152). .
At this time, in order to prevent the signal connection from being erroneously connected and to have a consistent connection, the displayed signal items, contents, and setting ranges are displayed with contents limited to the connectable range.

  If it is desired to replace all the components of the torque converter or the control ECU with new components, they may be moved from the model element storage unit by drag and drop (SA154).

  When the necessary connections are made and the torque converter and control ECU are connected normally, the parameters and parameter names of the changed torque converter and control ECU are specified (S157), and the function / performance is confirmed. For this purpose, a check mark is set for the signal to be viewed and the stored signal (SA158).

  When performing actual machine simulation, in order to check the signal connection of the actual machine, the torque converter control ECU is set as the measurement control target, and the connection check of the actual modeled measurement control device is performed (SA159), (SA160). .

  Here, although the torque converter and the control ECU have been described as examples of changing individual components, the procedure for changing other individual components can be similarly performed.

  Next, the individual components are combined and a soft simulation is performed using the integrated model (S19). In the soft simulation, a simulation code is generated by each modeled block, and the simulation is executed by Simulink. As a result of the simulation, the performance is confirmed by displaying the integrated model, the signal to be viewed of each component, and the set simulation result.

  In addition, it is decoded into an executable file format such as C code for measuring and controlling the actual machine by Simulink and output as simulation software (S20). The execution file may be any code that can be operated by the control unit 6 of FIG. 2, and can be operated on a general or conventionally used control device as long as it is composed of general-purpose programming code (for example, C ++). is there.

  Next, if there is a functional element change of the actual machine of the measurement control device to be modeled in order to perform a real machine simulation with the changed functional element model, when the component corresponds to the hardware of the model creation device After confirming whether the hardware is functionally and electrically connected as a system (S22), measurement control is executed with the simulation software in which the model creation device to be modeled is changed (S25). .

  As a result, when a partial change of the model creation system is required, a partial change can be easily performed by a user and a field engineer at the site of use, and within a range that does not affect the entire system. Comes out.

  If the individual parts are functionally independent and the functional performance of the individual parts can be changed only by software, the software can be changed and added by an external network.

  The present invention was made for the purpose of enabling such individual parts to be functionally independent, and for the functional performance to be able to change the individual parts only with software. When the change can be easily performed and a partial change is made, a system that easily confirms and guarantees the entire system operation is required. Therefore, in order to guarantee the consistency of the individual parts that are functionally independent of the present invention and whose functional performance can be changed only by software, the overall performance must be guaranteed as an integrated model. .

In addition to the embodiments described above, the model creation system having an actual machine simulation function according to the present invention is not limited to the technical field of the measurement control part of an electronically controlled vehicle, but is also used for product development processes and school education applications. It can be used as an experimental device that has both a function and an actual operation check function.

It is an example of the display item figure of the model creation screen of the model creation apparatus concerning this invention. 1 is an overall configuration diagram of a model creation device and a modeling target according to the present invention. It is a block diagram of the model builder of the model creation apparatus concerning this invention. It is explanatory drawing of the window structure of the model builder of the model creation apparatus concerning this invention. It is an example of a display of the designer window of the model builder of the model creation apparatus concerning this invention. It is an example of a display of the design window of the model builder of the model creation apparatus concerning this invention. It is an example of a display of the design window of the model builder of the model creation apparatus concerning this invention. It is an example of the flowchart which shows the usage method of the model builder concerning this invention.

Explanation of symbols

5 actual vehicle 6 control unit 8 throttle valve 10 throttle control unit 12 engine 13 engine control unit 16 transmission (torque converter)
17 Transmission (torque converter) control unit 20 Torque transmission shaft 22 Brake control unit 23 Wheel 31 Chassis dynamo roller unit 32 Axial torque detection sensor 33 Axial torque measurement unit 37 Dynamo 38 Dynamometer control unit 40 Display unit 41 System control unit 42 Operation unit 50 Measurement Unit 51 Input Unit 52 Data Memory 53 Signal Processing Unit 60 Model Simulation Unit 61 Model Creation Unit 62 Model Unit 63 Control Value Setting / Correction Unit 64 Simulation Unit

Claims (4)

  A vehicle model creation device that divides each part of a vehicle to be modeled into a finite number of model components, creates an integrated model of a vehicle in which the model components are connected with consistency, and The model component hardware and software are independently configured, designed according to the implementation format, and the user is provided with an integrated model of the vehicle to be modeled, a model component, or a model component to be added later, By changing the program of the software part of the model component, the function / performance of the vehicle to be modeled can be changed, and a program file of the execution format of the model component is automatically generated. Model creation device. In the vehicle model creation device, each part of the vehicle to be modeled is represented by a model component, and an integrated model of the vehicle is represented by a graphic method representing hardware and software, and each model component is connected as a directed system. (1) means for generating and displaying icons indicating hardware and software on the model component and the vehicle integrated model on a display of a graphical user interface;
(2) On the display, on the basis of an operation from the operation input unit, the attribute of the icon is given, and at the same time, the icon is arranged at a designated position;
(3) On the display, the icon is connected as a directed system, and at the same time, the attribute of the connection condition and the means corresponding to the connection method and the icon are determined;
(4) Consistency verification means for selectively displaying only icons that can be used to establish consistency between the model components of the icons displayed on the display;
(5) Sources of hardware and software functions of the model component, display icons, attributes of connection conditions to be connected as a directed system between model components, and a fixed relationship between the previous connection methods Means for storing as program data;
(6) means for generating an executable control program from the source program data;
(7) The vehicle model creation device according to claim 1, further comprising means for executing the executable control program.   Means for generating and displaying the hardware components and software icons of the model components and the vehicle integrated model on the display of the graphical user interface has a hierarchical structure from the vehicle integrated model to the model components. The method for generating and displaying icons indicating the hardware and software of the model component is provided with an energy view, a measurement control view, and an arrangement view display function for each model component. The vehicle model creation apparatus of Claim 1 and Claim 2. Consistency verification means for selectively displaying only icons that can establish consistency between the model components of the icons displayed on the display, selectively displays only icons that can establish consistency on the display. The vehicle model creation device according to claim 1, further comprising a designer window.

Images