CN113361036A - Analog simulation method and device for automobile shock absorber and computer storage medium - Google Patents
Analog simulation method and device for automobile shock absorber and computer storage medium Download PDFInfo
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- CN113361036A CN113361036A CN202110644271.0A CN202110644271A CN113361036A CN 113361036 A CN113361036 A CN 113361036A CN 202110644271 A CN202110644271 A CN 202110644271A CN 113361036 A CN113361036 A CN 113361036A
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Abstract
The embodiment of the application discloses an analog simulation method and device of an automobile shock absorber and a computer storage medium, and belongs to the technical field of analog simulation. The method comprises the following steps: building a first whole automobile model of an automobile in an Acar application program, wherein the first whole automobile model is built according to an entity structure of the automobile and comprises a shock absorber of the automobile; according to the first whole automobile model, a second whole automobile model of the automobile and a shock absorber model of the automobile are built in an Amesim application program, and the second whole automobile model does not comprise a shock absorber of the automobile; and performing analog simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model. According to the embodiment of the application, the shock absorber of the automobile is simulated jointly through the Acar application program and the Amesim application program, and the complete whole automobile power model is included in the joint simulation process, so that the simulation reliability of the shock absorber is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of analog simulation, in particular to an analog simulation method and device for an automobile shock absorber and a computer storage medium.
Background
With the development of automobile technology, people pay more attention to the comfort of automobiles. Wherein, the automobile shock absorber can absorb the vibrations that the wheel fell the unsmooth road surface and arouse to improve riding comfort. Therefore, in the whole vehicle development process, the damper is adjusted and displayed through the analog simulation of the automobile damper.
At present, a physical model of the automobile shock absorber can be built through an Amesim application program of a complex system modeling simulation platform in the multidisciplinary field so as to carry out simulation on the automobile shock absorber.
However, as the physical model is only built for the automobile shock absorber, the multi-system matching process of the whole automobile bushing, the spring and the shock absorption cannot be reflected, so that the adjustment of the automobile shock absorber is inaccurate, and the reliability of the simulation result of the automobile shock absorber is reduced.
Disclosure of Invention
The embodiment of the application provides an analog simulation method and device of an automobile shock absorber and a computer storage medium, which can be used for solving the problem of low reliability of an analog simulation result of the automobile shock absorber in the related art. The technical scheme is as follows:
in one aspect, a simulation method for a shock absorber of an automobile is provided, and the method comprises the following steps:
building a first whole automobile model of an automobile in an Acar application program, wherein the first whole automobile model is built according to an entity structure of the automobile and comprises a shock absorber of the automobile;
according to the first whole automobile model, a second whole automobile model of the automobile and a shock absorber model of the automobile are built in a multidisciplinary field complex system modeling simulation platform Amesim application program, and the second whole automobile model does not comprise a shock absorber of the automobile;
and performing analog simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model.
In some embodiments, said building a second vehicle model of said vehicle and a shock absorber model of said vehicle in an Amesim application based on said first vehicle model comprises:
externally connecting a calling parameter of a shock absorber in the first whole vehicle model to the Amesim application program to obtain a third whole vehicle model, wherein the third whole vehicle model is a model which does not include the shock absorber of the automobile in the Acar application program;
exporting the third whole vehicle model from the Acar application program to obtain a first interface file;
setting a standard communication module in the Amesim application program, wherein the standard communication module is a module for enabling all the functional modules to communicate;
according to the first interface file and the standard communication module, building the second whole vehicle model in the Amesim application program;
and building the shock absorber model in the Amesim application program according to the second whole vehicle model.
In some embodiments, the outsourcing the calling parameter of the shock absorber in the first vehicle model to the Amesim application program to obtain a third vehicle model includes:
in the Acar application program, creating system state variables in subsystems of a front suspension model and a rear suspension model in the first whole vehicle model;
setting an input variable and an output variable in the first finished automobile model, wherein the input variable comprises a damper damping force in the system state variable, the output variable comprises a damper speed and displacement in the system state variable, and the output variable is used for outputting to the Amesim application program;
creating an actuator in a subsystem of the front and rear suspension models, the actuator for correlating with the shock absorber damping forces;
and deleting the speed and the damping force of the shock absorber in the first finished automobile model to obtain a third finished automobile model.
In some embodiments, the building the second complete vehicle model in the Amesim application according to the first interface file and the standard communication module includes:
compiling the first interface file through the Amesim application program to obtain a second interface file;
and replacing the standard communication module with the second interface file to obtain the second whole vehicle model.
In some embodiments, the deriving the third complete vehicle model from the Acar application to obtain a first interface file includes:
setting a drive control file of the Acar application program, wherein the drive control file is used for describing control parameters in the driving process of the automobile;
simulating the drive control file to obtain a calling file with a specified format;
and exporting the third whole vehicle model from the Acar application program through the calling file to obtain a first interface file.
In another aspect, there is provided an analog simulation apparatus of a shock absorber for a vehicle, the apparatus including:
the system comprises a first building module, a first whole vehicle model and a second building module, wherein the first building module is used for building the first whole vehicle model of the vehicle in an Acar application program, the first whole vehicle model is built according to the entity structure of the vehicle, and the first whole vehicle model comprises a shock absorber of the vehicle;
the second building module is used for building a second whole vehicle model of the automobile and a shock absorber model of the automobile in a multidisciplinary field complex system modeling simulation platform Amesim application program according to the first whole vehicle model, wherein the second whole vehicle model does not comprise a shock absorber of the automobile;
and the simulation module is used for carrying out simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model.
In some embodiments, the second building module comprises:
the external submodule is used for externally connecting the calling parameter of the shock absorber in the first whole vehicle model to the Amesim application program to obtain a third whole vehicle model, and the third whole vehicle model is a model which does not include the shock absorber of the automobile in the Acar application program;
the export submodule is used for exporting the third whole vehicle model from the Acar application program to obtain a first interface file;
the first setting submodule is used for setting a standard communication module in the Amesim application program, and the standard communication module is a module for enabling all the functional modules to communicate;
the first building submodule is used for building the second whole vehicle model in the Amesim application program according to the first interface file and the standard communication module;
and the second building submodule is used for building the shock absorber model in the Amesim application program according to the second whole vehicle model.
In some embodiments, the external sub-module is configured to:
in the Acar application program, creating system state variables in subsystems of a front suspension model and a rear suspension model in the first whole vehicle model;
setting an input variable and an output variable in the first finished automobile model, wherein the input variable comprises a damper damping force in the system state variable, the output variable comprises a damper speed and displacement in the system state variable, and the output variable is used for outputting to the Amesim application program;
creating an actuator in a subsystem of the front and rear suspension models, the actuator for correlating with the shock absorber damping forces;
and deleting the speed and the damping force of the shock absorber in the first finished automobile model to obtain a third finished automobile model.
In some embodiments, the first construction sub-module is for:
compiling the first interface file through the Amesim application program to obtain a second interface file;
and replacing the standard communication module with the second interface file to obtain the second whole vehicle model.
In some embodiments, the derivation submodule is to:
setting a drive control file of the Acar application program, wherein the drive control file is used for describing control parameters in the driving process of the automobile;
simulating the drive control file to obtain a calling file with a specified format;
and exporting the third whole vehicle model from the Acar application program through the calling file to obtain a first interface file.
In another aspect, a computer-readable storage medium is provided, which has instructions stored thereon, and when the instructions are executed by a processor, the instructions implement any one of the steps of the simulation method for the automobile shock absorber.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
in the embodiment of the application, the shock absorber of the automobile can be simulated jointly through the Acar application program and the Amesim application program, and the complete whole automobile power model is included in the joint simulation process, so that the influence of the automobile on the smoothness when a plurality of systems such as springs, shock absorbers and bushings are coupled under different road surfaces is considered in the simulation process, and the simulation reliability of the shock absorber is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an implementation environment provided by an embodiment of the present application;
FIG. 2 is a flow chart of a simulation method for a shock absorber of an automobile according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of another simulation method for a shock absorber of an automobile according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an analog simulation device of a shock absorber of an automobile according to an embodiment of the present application;
figure 5 is a schematic structural diagram of a second building module provided by an embodiment of the present application;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application more clear, the embodiments of the present application will be further described in detail with reference to the accompanying drawings.
Before explaining the simulation method of the automobile shock absorber provided by the embodiment of the present application in detail, an application scenario and an implementation environment provided by the embodiment of the present application are explained in detail.
First, an application scenario provided in the embodiment of the present application is explained.
Because the riding comfort of a user is directly influenced by the strength of the shock absorption capacity of the automobile shock absorber, a physical model of the automobile shock absorber can be built through an Amesim application program generally so as to carry out simulation on the automobile shock absorber, and the shock absorber is adjusted and calibrated in the whole automobile research and development stage.
However, since the Amesim application program is only used for building a physical model of the shock absorber of the automobile, a multi-system matching process of a whole automobile bushing, a spring and shock absorption cannot be embodied, so that the adjustment of the shock absorber of the automobile is inaccurate, and the reliability of an analog simulation result of the shock absorber of the automobile is reduced.
Based on the application scene, the embodiment of the application provides the automobile shock absorber simulation method for improving the accuracy and the reliability of the automobile shock absorber simulation.
Next, an implementation environment provided in the embodiments of the present application is explained.
Fig. 1 is a schematic diagram of an implementation environment provided by an embodiment of the present application, and referring to fig. 1, the method for simulating an automobile shock absorber is applied to a terminal, where the terminal can be installed with an Acar application 1 and an Amesim application 2, and both the Acar application 1 and the Amesim application 2 can be applications capable of performing simulation.
The Acar application program 1 can build a whole vehicle model (also called a whole vehicle dynamic model) of the vehicle, the Amesim application program 2 can build a shock absorber model of the vehicle, and the terminal can communicate the Acar application program 1 with the Amesim application program 2, so that joint simulation of the shock absorber of the vehicle is realized.
Fig. 2 is a flowchart of a simulation method for an automobile shock absorber according to an embodiment of the present disclosure, where the simulation method for an automobile shock absorber may include the following steps:
step 201: and building a first whole automobile model of the automobile in the Acar application program, wherein the first whole automobile model is built according to the entity structure of the automobile and comprises the shock absorber of the automobile.
Step 202: and according to the first whole automobile model, a second whole automobile model of the automobile and a shock absorber model of the automobile are built in a multidisciplinary field complex system modeling simulation platform Amesim application program, and the second whole automobile model does not comprise a shock absorber of the automobile.
Step 203: and performing analog simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model.
In the embodiment of the application, the shock absorber of the automobile can be simulated jointly through the Acar application program and the Amesim application program, and the complete whole automobile power model is included in the joint simulation process, so that the influence of the automobile on the smoothness when a plurality of systems such as springs, shock absorbers and bushings are coupled under different road surfaces is considered in the simulation process, and the simulation reliability of the shock absorber is improved.
In some embodiments, building a second full car model of the car and a shock absorber model of the car in an Amesim application based on the first full car model comprises:
externally connecting the calling parameter of the shock absorber in the first whole vehicle model to the Amesim application program to obtain a third whole vehicle model, wherein the third whole vehicle model is a model which does not include the shock absorber of the automobile in the Acar application program;
exporting the third whole vehicle model from the Acar application program to obtain a first interface file;
setting a standard communication module in the Amesim application program, wherein the standard communication module is a module for enabling all the functional modules to communicate;
according to the first interface file and the standard communication module, the second whole vehicle model is set up in the Amesim application program;
and building the shock absorber model in the Amesim application program according to the second whole vehicle model.
In some embodiments, outsourcing the calling parameter of the shock absorber in the first vehicle model to the Amesim application program to obtain a third vehicle model, includes:
in the Acar application program, system state variables are created in subsystems of a front suspension model and a rear suspension model in the first whole vehicle model;
setting an input variable and an output variable in the first finished automobile model, wherein the input variable comprises a damper damping force in the system state variable, the output variable comprises a damper speed and displacement in the system state variable, and the output variable is used for outputting to the Amesim application program;
creating an actuator in a subsystem of the front and rear suspension models, the actuator for correlating with the shock absorber damping forces;
and deleting the speed and the damping force of the shock absorber in the first finished automobile model to obtain a third finished automobile model.
In some embodiments, building the second complete vehicle model in the Amesim application according to the first interface file and the standard communication module includes:
compiling the first interface file through the Amesim application program to obtain a second interface file;
and replacing the standard communication module with the second interface file to obtain the second finished automobile model.
In some embodiments, exporting the third complete vehicle model from the Acar application, obtaining a first interface file, includes:
setting a drive control file of the Acar application program, wherein the drive control file is used for describing control parameters in the driving process of the automobile;
simulating the drive control file to obtain a calling file with a specified format;
and exporting the third whole vehicle model from the Acar application program through the calling file to obtain a first interface file.
All the above optional technical solutions can be combined arbitrarily to form an optional embodiment of the present application, and the present application embodiment is not described in detail again.
Fig. 3 is a flowchart of an analog simulation method for an automobile shock absorber provided in an embodiment of the present application, which is exemplified by applying the analog simulation method for an automobile shock absorber to a terminal, and the analog simulation method for an automobile shock absorber may include the following steps:
step 301: and the terminal builds a first whole automobile model of the automobile in the Acar application program.
It should be noted that the first entire vehicle model is built according to the solid structure of the vehicle, and the first entire vehicle model includes the shock absorber of the vehicle.
As an example, the terminal can build a first whole car model of the car in the Acar application program by a first specified ratio when receiving the first building instruction.
It should be noted that the first designated ratio is a ratio between the physical structure of the automobile and the first entire automobile model, and the first designated ratio can be set in advance according to requirements, for example, the first designated ratio can be 200:1, 400:1, and so on.
In some embodiments, the terminal can not only build the first complete vehicle model of the vehicle in the Acar application program through the first specified proportion when receiving the first building instruction, but also obtain the built first complete vehicle model of the vehicle from the storage file when receiving the obtaining instruction, and load the obtained first complete vehicle model into the Acar application program to complete building of the first complete vehicle model of the vehicle.
It should be noted that the first building instruction and the obtaining instruction can be triggered when a user acts on the Acar application display interface through a specified operation, and the specified operation can be a click operation, a sliding operation, a voice operation, and the like. The first whole vehicle model is a whole vehicle power learning model of the vehicle.
In some embodiments, before the terminal builds the first whole car model of the car in the Acar application, the terminal can also receive a first starting instruction and run the Acar application according to the first starting instruction.
It should be noted that the first start instruction can be triggered when a user acts on an identifier of an Acar application program displayed in the terminal through a specified operation, and the identifier of the Acar application program can be an image identifier and/or a text identifier.
In some embodiments, after building the first complete vehicle model of the vehicle, the terminal can also set the input variables and the output variables of the joint simulation in the first complete vehicle model. The input variables can include the damping force of the front left shock absorber, the damping force of the front right shock absorber, the damping force of the rear left shock absorber and the damping force of the rear right shock absorber of the automobile; the output variables include a necessary output variable and a selectable output variable, the necessary output variable can include a left front damper displacement, a left front damper velocity, a right front damper displacement, a right front damper velocity, a left rear damper displacement, a left rear damper velocity, a right rear damper displacement, a right rear damper velocity; the selectable output variables can include parameters related to objective ride comfort measurements and parameters related to load, for example, parameters related to objective ride comfort measurements for automobiles include: wheel center acceleration, driver seat rail acceleration, and the like, and load-related parameters can include shock absorber mounting point stress, and the like.
In some embodiments, the terminal can receive input variables and output variables input by a user through input operation, and perform operation of setting the input variables and the output variables of the joint simulation in the first finished automobile model according to the input variables and the output variables input by the user. Or the terminal can acquire the input variable and the output variable from the storage file, and set the input variable and the output variable of the joint simulation in the first finished automobile model according to the acquired input variable and output variable.
Step 302: and the terminal establishes a second whole automobile model of the automobile and a shock absorber model of the automobile in the Amesim application program according to the first whole automobile model, wherein the second whole automobile model does not comprise the shock absorber of the automobile.
Because the Amesim application program can simulate the steady-state and dynamic performance of a simulation element or system, in order to simulate the real-vehicle adjustment and calibration process of the shock absorber of the simulated automobile and improve the reliability of the shock absorber simulation, the terminal can build a second whole automobile model of the automobile and a shock absorber model of the automobile in the Amesim application program according to the first whole automobile model.
In some embodiments, the terminal is capable of receiving a second start instruction before building a second vehicle model of the vehicle and a shock absorber model of the vehicle in the Amesim application according to the first vehicle model, and running the Amesim application according to the second start instruction.
It should be noted that the second start instruction can be triggered when the user acts on the identifier of the Amesim application program displayed in the terminal through a specified operation, and the identifier of the Amesim application program can be an image identifier and/or a text identifier.
As an example, the operation of the terminal building a second vehicle model of the automobile and a shock absorber model of the automobile in the Amesim application program according to the first vehicle model comprises the following operations: externally connecting the calling parameters of the shock absorber in the first whole vehicle model to an Amesim application program to obtain a third whole vehicle model, wherein the third whole vehicle model is a model which does not include the shock absorber of the automobile in the Acar application program; exporting the third whole vehicle model from the Acar application program to obtain a first interface file; setting a standard communication module in an Amesim application program, wherein the standard communication module is a module for enabling all functional modules to communicate; according to the first interface file and the standard communication module, a second finished automobile model is built in an Amesim application program; and building a shock absorber model in an Amesim application program according to the second whole vehicle model.
In order to enable a shock absorber model of an automobile in an Amesim application program to be matched with a complete automobile dynamic model of the automobile during simulation, a terminal can externally connect calling parameters of a shock absorber in a first complete automobile model to the Amesim application program.
As an example, the operation of externally connecting the calling parameter of the shock absorber in the first vehicle model to the Amesim application program by the terminal to obtain the third vehicle model includes: in an Acar application program, creating system state variables in subsystems of a front suspension model and a rear suspension model in a first whole vehicle model; setting an input variable and an output variable in a first finished automobile model, wherein the input variable comprises a damper damping force in a system state variable, the output variable comprises a damper speed and displacement in the system state variable, and the output variable is used for outputting to an Amesim application program; creating an actuator in a subsystem of a front suspension model and a rear suspension model, wherein the actuator is used for being associated with damping force of a shock absorber; and deleting the speed and the damping force of the shock absorber in the first finished automobile model to obtain a third finished automobile model.
Since the parameters of the shock absorber of the automobile are related to the front suspension and the rear suspension of the automobile, the terminal needs to create system state variables in the Acar application program for the subsystems of the front suspension model and the rear suspension model in the first whole automobile model.
It should be noted that the system state variables can include a speed magnitude range, a damping force magnitude range, a displacement magnitude range of the shock absorber, objective measurement data of parameters related to objective measurement of vehicle ride comfort, load state variables, and the like. The objective measurement data includes a wheel center acceleration magnitude range, a driver seat rail acceleration magnitude range, and the like.
In some embodiments, the terminal can set an input variable and an output variable in the first whole vehicle model, associate the damping force magnitude ranges of the four shock absorbers in the system state variable into the input variable of the first whole vehicle model, and associate the speed magnitudes and the displacement magnitudes of the four shock absorbers in the system state variable into the output variable of the first whole vehicle model, so that the damping forces of the shock absorbers in the system state variable are included in the input variable, and the speed magnitudes and the displacement magnitudes of the shock absorbers in the system state variable are included in the output variable.
In some embodiments, the terminal is further capable of associating the vehicle ride comfort objective measurement related parameters together into the output variables of the first vehicle model.
It should be noted that creating an Actuator in the front and rear suspension model subsystems can be an Actuator and correlate the range of shock absorber damping forces to the corresponding Actuator.
In some embodiments, in order to avoid errors in simulation, in the process of externally connecting the calling parameters of the shock absorbers in the first vehicle model to the Amesim application program, the speed characteristic curve of the shock absorbers in the first vehicle model needs to be reset to zero, only the motion characteristic is reserved, and the damping force is removed. Namely, the speed and the damping force of the shock absorber are deleted in the first whole vehicle model, and a third whole vehicle model is obtained.
Since the third whole vehicle model is a model in the Acar application program, in order to build a whole vehicle model corresponding to the shock absorber model of the vehicle in the Amesim application program, the terminal can export the third whole vehicle model from the Acar application program to obtain the first interface file.
As an example, the terminal derives the third entire vehicle model from the Acar application, and the operation of obtaining the first interface file includes: setting a drive control file of the Acar application program, wherein the drive control file is used for describing control parameters in the driving process of the automobile; simulating the drive control file to obtain a calling file with a specified format; and exporting the third whole vehicle model from the Acar application program by calling the file to obtain a first interface file.
The drive control file includes control parameters during the running of the vehicle, such as the running speed of the vehicle, an accelerator control parameter, and a steering wheel angle.
In some embodiments, the terminal can simulate the drive control file through a third entire vehicle model to obtain a call file in a specified format.
It should be noted that the specified format may be an. acf format, and in order to increase the simulation speed, the terminal sets the simulation mode to the files _ only mode when performing simulation by the third vehicle model. The first interface file can be a file of an FMU (functional model unit) standard interface, that is, the terminal can export the third complete vehicle model from the Acar application program by using the FMU standard interface, so as to obtain the first interface file, and the first interface file can be an FMU interface file.
In order to enable the terminal to embody a multi-system matching process of a whole automobile bushing, a spring and shock absorption when the shock absorber of an automobile is simulated, and to improve the simulation reliability of the shock absorber, the terminal can build a whole automobile model of the automobile in an Amesim application program, namely the automobile can build a second whole automobile model in the Amesim application program according to a first interface file and a standard communication module.
As an example, the operation of building a second finished automobile model in an Amesim application program by the terminal according to the first interface file and the standard communication module includes: compiling the first interface file through an Amesim application program to obtain a second interface file; and replacing the standard communication module with the second interface file to obtain a second whole vehicle model.
It should be noted that the standard communication module can be an FMI (Functional module-up Interface) module, that is, the standard communication module set by the terminal in the Amesim application is an FMI module, and the terminal can create the FMI module through Interface Icon Creation (elementary hydraulic simulation Creation Interface), and set input variables and output variables of the FMI module, where the number of the input variables is at least four, and the number of the output variables is at least eight. The output variables can include parameters related to objective measurement of vehicle ride comfort.
In some embodiments, the terminal compiles the first interface file by an Amesim application program to obtain a second interface file, which can be FMI Imported blocks (a FMI-type file); and then replacing the standard communication module with a second interface file, namely replacing the FMI module with FMI Imported blocks, wherein the replaced FMI module is a second whole vehicle module.
Step 303: and the terminal carries out analog simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model.
Because the terminal not only builds the shock absorber model in the Amesim application program, but also builds a second whole vehicle model matched with the shock absorber model, the terminal can perform analog simulation on the shock absorber of the vehicle according to the shock absorber model and the second whole vehicle model in the Amesim application program.
Step 304: and the terminal displays the simulation result in the Amesim application program.
Because the terminal carries out analog simulation on the shock absorber of the automobile in the Amesim application program, after the simulation is finished, the terminal can display an analog simulation result in the Amesim application program.
In the embodiment of the application, the terminal can jointly simulate the shock absorber of the automobile through the Acar application program and the Amesim application program, because the complete automobile power model is included in the joint simulation process, namely the influence of the automobile on the smoothness when multiple systems such as springs, shock absorbers and bushings are coupled under different pavements are considered in the simulation process, and meanwhile, the shock absorber is externally connected into a physical model of the Amesim application program, the influence of temperature, liquid viscosity, density, elastic models, nitrogen filling and the like on the simulation precision can be considered, the problem of how to generate a shock absorber speed characteristic curve and an indicator diagram at the initial stage of shock absorber design is solved, and the reliability of shock absorber simulation is improved. In addition, because the Amesim application program has very powerful functional modules, the physical model of the late-stage shock absorber has strong expandability, such as: active shock absorbers, etc., thereby providing guidance for the structural design of the shock absorber.
Fig. 4 is a schematic structural diagram of an analog simulation device of an automobile shock absorber provided in an embodiment of the present application, where the analog simulation device of the automobile shock absorber can be implemented by software, hardware, or a combination of the two. The simulation device of the automobile shock absorber can comprise: a first building module 401, a second building module 402 and a simulation module 403.
The first building module 401 is used for building a first whole automobile model of an automobile in an Acar application program, wherein the first whole automobile model is built according to an entity structure of the automobile and comprises a shock absorber of the automobile;
a second building module 402, configured to build, according to the first whole vehicle model, a second whole vehicle model of the vehicle and a shock absorber model of the vehicle in an Amesim application program, where the second whole vehicle model does not include a shock absorber of the vehicle;
and a simulation module 403, configured to perform simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model.
In some embodiments, referring to fig. 5, the second building module 402 comprises:
the external submodule 4021 is used for externally connecting the calling parameter of the shock absorber in the first whole vehicle model to the Amesim application program to obtain a third whole vehicle model, wherein the third whole vehicle model is a model which does not include the shock absorber of the automobile in the Acar application program;
the export submodule 4022 is configured to export the third whole vehicle model from the Acar application program to obtain a first interface file;
a first setting sub-module 4023, configured to set a standard communication module in the Amesim application program, where the standard communication module is a module that enables communication between the functional modules;
the first building sub-module 4024 is used for building the second whole vehicle model in the Amesim application program according to the first interface file and the standard communication module;
and the second building submodule 4025 is used for building the shock absorber model in the Amesim application program according to the second whole vehicle model.
In some embodiments, the external sub-module 4021 is configured to:
in the Acar application program, creating system state variables in subsystems of a front suspension model and a rear suspension model in the first whole vehicle model;
setting an input variable and an output variable in the first finished automobile model, wherein the input variable comprises a damper damping force in the system state variable, the output variable comprises a damper speed and displacement in the system state variable, and the output variable is used for outputting to the Amesim application program;
creating an actuator in a subsystem of the front and rear suspension models, the actuator for correlating with the shock absorber damping forces;
and deleting the speed and the damping force of the shock absorber in the first finished automobile model to obtain a third finished automobile model.
In some embodiments, the first building sub-module 4024 is configured to:
compiling the first interface file through the Amesim application program to obtain a second interface file;
and replacing the standard communication module with the second interface file to obtain the second whole vehicle model.
In some embodiments, the derivation submodule 4022 is configured to:
setting a drive control file of the Acar application program, wherein the drive control file is used for describing control parameters in the driving process of the automobile;
simulating the drive control file to obtain a calling file with a specified format;
and exporting the third whole vehicle model from the Acar application program through the calling file to obtain a first interface file.
In the embodiment of the application, the terminal can jointly simulate the shock absorber of the automobile through the Acar application program and the Amesim application program, because the complete automobile power model is included in the joint simulation process, namely the influence of the automobile on the smoothness when multiple systems such as springs, shock absorbers and bushings are coupled under different pavements are considered in the simulation process, and meanwhile, the shock absorber is externally connected into a physical model of the Amesim application program, the influence of temperature, liquid viscosity, density, elastic models, nitrogen filling and the like on the simulation precision can be considered, the problem of how to generate a shock absorber speed characteristic curve and an indicator diagram at the initial stage of shock absorber design is solved, and the reliability of shock absorber simulation is improved. In addition, because the Amesim application program has very powerful functional modules, the physical model of the late-stage shock absorber has strong expandability, such as: active shock absorbers, etc., thereby providing guidance for the structural design of the shock absorber.
It should be noted that: in the simulation of the automobile shock absorber provided in the above embodiment, only the division of the above functional modules is used for illustration, and in practical applications, the above functions may be distributed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. In addition, the simulation device for triggering the automobile shock absorber provided by the embodiment and the simulation method embodiment of the automobile shock absorber belong to the same concept, and the specific implementation process is described in the method embodiment in detail and is not described herein again.
Fig. 6 shows a block diagram of a terminal 600 according to an exemplary embodiment of the present application. The terminal 600 may be: a smart phone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III, motion video Experts compression standard Audio Layer 3), an MP4 player (Moving Picture Experts Group Audio Layer IV, motion video Experts compression standard Audio Layer 4), a notebook computer, or a desktop computer. The terminal 600 may also be referred to by other names such as user equipment, portable terminal, laptop terminal, desktop terminal, etc.
In general, the terminal 600 includes: a processor 601 and a memory 602.
The processor 601 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 601 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 601 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 601 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content that the display screen needs to display. In some embodiments, processor 601 may also include an AI (Artificial Intelligence) processor for processing computational operations related to machine learning.
The memory 602 may include one or more computer-readable storage media, which may be non-transitory. The memory 602 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 602 is used to store at least one instruction for execution by processor 601 to implement the simulation method for a shock absorber of an automobile provided by the method embodiments of the present application.
In some embodiments, the terminal 600 may further optionally include: a peripheral interface 603 and at least one peripheral. The processor 601, memory 602, and peripheral interface 603 may be connected by buses or signal lines. Various peripheral devices may be connected to the peripheral interface 603 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit 604, a display 605, a camera assembly 606, an audio circuit 607, a positioning component 608, and a power supply 609.
The peripheral interface 603 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 601 and the memory 602. In some embodiments, the processor 601, memory 602, and peripheral interface 603 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 601, the memory 602, and the peripheral interface 603 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.
The Radio Frequency circuit 604 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 604 communicates with communication networks and other communication devices via electromagnetic signals. The rf circuit 604 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 604 comprises: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 604 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: metropolitan area networks, various generation mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the rf circuit 604 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.
The display 605 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 605 is a touch display screen, the display screen 605 also has the ability to capture touch signals on or over the surface of the display screen 605. The touch signal may be input to the processor 601 as a control signal for processing. At this point, the display 605 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display 605 may be one, providing the front panel of the terminal 600; in other embodiments, the display 605 may be at least two, respectively disposed on different surfaces of the terminal 600 or in a folded design; in other embodiments, the display 605 may be a flexible display disposed on a curved surface or a folded surface of the terminal 600. Even more, the display 605 may be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The Display 605 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and the like.
The camera assembly 606 is used to capture images or video. Optionally, camera assembly 606 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. In some embodiments, the number of the rear cameras is at least two, and each rear camera is any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and VR (Virtual Reality) shooting functions or other fusion shooting functions. In some embodiments, camera assembly 606 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.
The positioning component 608 is used for positioning the current geographic Location of the terminal 600 to implement navigation or LBS (Location Based Service). The Positioning component 608 can be a Positioning component based on the united states GPS (Global Positioning System), the chinese beidou System, the russian graves System, or the european union's galileo System.
In some embodiments, the terminal 600 also includes one or more sensors 610. The one or more sensors 610 include, but are not limited to: acceleration sensor 611, gyro sensor 612, pressure sensor 613, fingerprint sensor 614, optical sensor 615, and proximity sensor 616.
The acceleration sensor 611 may detect the magnitude of acceleration in three coordinate axes of the coordinate system established with the terminal 600. For example, the acceleration sensor 611 may be used to detect components of the gravitational acceleration in three coordinate axes. The processor 601 may control the display screen 605 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 611. The acceleration sensor 611 may also be used for acquisition of motion data of a game or a user.
The gyro sensor 612 may detect a body direction and a rotation angle of the terminal 600, and the gyro sensor 612 and the acceleration sensor 611 may cooperate to acquire a 3D motion of the user on the terminal 600. The processor 601 may implement the following functions according to the data collected by the gyro sensor 612: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.
Pressure sensors 613 may be disposed on the side bezel of terminal 600 and/or underneath display screen 605. When the pressure sensor 613 is disposed on the side frame of the terminal 600, a user's holding signal of the terminal 600 can be detected, and the processor 601 performs left-right hand recognition or shortcut operation according to the holding signal collected by the pressure sensor 613. When the pressure sensor 613 is disposed at the lower layer of the display screen 605, the processor 601 controls the operability control on the UI interface according to the pressure operation of the user on the display screen 605. The operability control comprises at least one of a button control, a scroll bar control, an icon control and a menu control.
The fingerprint sensor 614 is used for collecting a fingerprint of a user, and the processor 601 identifies the identity of the user according to the fingerprint collected by the fingerprint sensor 614, or the fingerprint sensor 614 identifies the identity of the user according to the collected fingerprint. Upon identifying that the user's identity is a trusted identity, the processor 601 authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying, and changing settings, etc. The fingerprint sensor 614 may be disposed on the front, back, or side of the terminal 600. When a physical button or vendor Logo is provided on the terminal 600, the fingerprint sensor 614 may be integrated with the physical button or vendor Logo.
The optical sensor 615 is used to collect the ambient light intensity. In one embodiment, processor 601 may control the display brightness of display screen 605 based on the ambient light intensity collected by optical sensor 615. Specifically, when the ambient light intensity is high, the display brightness of the display screen 605 is increased; when the ambient light intensity is low, the display brightness of the display screen 605 is adjusted down. In another embodiment, the processor 601 may also dynamically adjust the shooting parameters of the camera assembly 606 according to the ambient light intensity collected by the optical sensor 615.
A proximity sensor 616, also known as a distance sensor, is typically disposed on the front panel of the terminal 600. The proximity sensor 616 is used to collect the distance between the user and the front surface of the terminal 600. In one embodiment, when proximity sensor 616 detects that the distance between the user and the front face of terminal 600 gradually decreases, processor 601 controls display 605 to switch from the bright screen state to the dark screen state; when the proximity sensor 616 detects that the distance between the user and the front face of the terminal 600 is gradually increased, the processor 601 controls the display 605 to switch from the breath-screen state to the bright-screen state.
Those skilled in the art will appreciate that the configuration shown in fig. 6 is not intended to be limiting of terminal 600 and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used.
The embodiment of the application also provides a non-transitory computer readable storage medium, and when instructions in the storage medium are executed by a processor of a terminal, the terminal can execute the simulation method of the automobile shock absorber provided by the above embodiment.
The embodiment of the application also provides a computer program product containing instructions, which when running on a terminal, enables the terminal to execute the simulation method of the automobile shock absorber provided by the embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An analog simulation method of an automobile shock absorber, which is characterized by comprising the following steps:
building a first whole automobile model of an automobile in an Acar application program, wherein the first whole automobile model is built according to an entity structure of the automobile and comprises a shock absorber of the automobile;
according to the first whole automobile model, a second whole automobile model of the automobile and a shock absorber model of the automobile are built in a multidisciplinary field complex system modeling simulation platform Amesim application program, and the second whole automobile model does not comprise a shock absorber of the automobile;
and performing analog simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model.
2. The method of claim 1, wherein building a second full car model of the car and a shock absorber model of the car in an Amesim application based on the first full car model comprises:
externally connecting a calling parameter of a shock absorber in the first whole vehicle model to the Amesim application program to obtain a third whole vehicle model, wherein the third whole vehicle model is a model which does not include the shock absorber of the automobile in the Acar application program;
exporting the third whole vehicle model from the Acar application program to obtain a first interface file;
setting a standard communication module in the Amesim application program, wherein the standard communication module is a module for enabling all the functional modules to communicate;
according to the first interface file and the standard communication module, building the second whole vehicle model in the Amesim application program;
and building the shock absorber model in the Amesim application program according to the second whole vehicle model.
3. The method of claim 2, wherein said outsourcing a calling parameter of a shock absorber in the first vehicle model to the Amesim application to obtain a third vehicle model comprises:
in the Acar application program, creating system state variables in subsystems of a front suspension model and a rear suspension model in the first whole vehicle model;
setting an input variable and an output variable in the first finished automobile model, wherein the input variable comprises a damper damping force in the system state variable, the output variable comprises a damper speed and displacement in the system state variable, and the output variable is used for outputting to the Amesim application program;
creating an actuator in a subsystem of the front and rear suspension models, the actuator for correlating with the shock absorber damping forces;
and deleting the speed and the damping force of the shock absorber in the first finished automobile model to obtain a third finished automobile model.
4. The method of claim 2, wherein said building the second full car model in the Amesim application according to the first interface file and the standard communication module comprises:
compiling the first interface file through the Amesim application program to obtain a second interface file;
and replacing the standard communication module with the second interface file to obtain the second whole vehicle model.
5. The method of claim 2, wherein the deriving the third complete vehicle model from the Acar application to obtain a first interface file comprises:
setting a drive control file of the Acar application program, wherein the drive control file is used for describing control parameters in the driving process of the automobile;
simulating the drive control file to obtain a calling file with a specified format;
and exporting the third whole vehicle model from the Acar application program through the calling file to obtain a first interface file.
6. An analog simulation apparatus of a shock absorber for an automobile, the apparatus comprising:
the system comprises a first building module, a first whole vehicle model and a second building module, wherein the first building module is used for building the first whole vehicle model of the vehicle in an Acar application program, the first whole vehicle model is built according to the entity structure of the vehicle, and the first whole vehicle model comprises a shock absorber of the vehicle;
the second building module is used for building a second whole vehicle model of the automobile and a shock absorber model of the automobile in a multidisciplinary field complex system modeling simulation platform Amesim application program according to the first whole vehicle model, wherein the second whole vehicle model does not comprise a shock absorber of the automobile;
and the simulation module is used for carrying out simulation on the shock absorber of the automobile according to the shock absorber model and the second whole automobile model.
7. The apparatus of claim 6, wherein the second build module comprises:
the external submodule is used for externally connecting the calling parameter of the shock absorber in the first whole vehicle model to the Amesim application program to obtain a third whole vehicle model, and the third whole vehicle model is a model which does not include the shock absorber of the automobile in the Acar application program;
the export submodule is used for exporting the third whole vehicle model from the Acar application program to obtain a first interface file;
the first setting submodule is used for setting a standard communication module in the Amesim application program, and the standard communication module is a module for enabling all the functional modules to communicate;
the first building submodule is used for building the second whole vehicle model in the Amesim application program according to the first interface file and the standard communication module;
and the second building submodule is used for building the shock absorber model in the Amesim application program according to the second whole vehicle model.
8. The apparatus of claim 7, wherein the external sub-module is to:
in the Acar application program, creating system state variables in subsystems of a front suspension model and a rear suspension model in the first whole vehicle model;
setting an input variable and an output variable in the first finished automobile model, wherein the input variable comprises a damper damping force in the system state variable, the output variable comprises a damper speed and displacement in the system state variable, and the output variable is used for outputting to the Amesim application program;
creating an actuator in a subsystem of the front and rear suspension models, the actuator for correlating with the shock absorber damping forces;
and deleting the speed and the damping force of the shock absorber in the first finished automobile model to obtain a third finished automobile model.
9. An apparatus according to claim 7, wherein the first building submodule is operable to:
compiling the first interface file through the Amesim application program to obtain a second interface file;
and replacing the standard communication module with the second interface file to obtain the second whole vehicle model.
10. A computer-readable storage medium having stored thereon instructions which, when executed by a processor, carry out the steps of the method of any of the preceding claims 1 to 5.
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