CN111428333A - A ship lifting simulation method, storage medium and system - Google Patents

Abstract

The invention relates to a ship hoisting simulation method, which comprises the following steps: establishing a three-dimensional model of the cargo plane; building a driving platform, and guiding the three-dimensional model into the driving platform for analog driving; and building a Web platform based on the result of the analog drive so as to interact the result of the analog drive on the Web platform. The invention also provides a storage medium having a computer program stored therein, wherein the computer program is arranged to perform a vessel lifting simulation method when running. The invention also provides a ship lifting simulation system, which comprises a processor and a memory, wherein the memory is stored with a computer program, and the computer program is executed by the processor to realize a ship lifting simulation method. Through the ship hoisting simulation method, the storage medium and the system, good balance between calculation speed and precision can be obtained.

Description

A ship lifting simulation method, storage medium and system

technical field

The invention relates to the field of lifting analysis of ship cranes, in particular to a ship lifting simulation method, storage medium and system.

Background technique

With the development of web technology, it has been widely used for information exchange and digital sharing in cultural and technological aspects, such as online education platforms. However, web technology still has a lot of room for development in terms of tooling, network collaboration, etc. In particular, it has not been applied to mechanical operations on ships, that is, it uses numerical simulation to simulate the correlation and power between various components in the working system. features to achieve a good balance between computational speed and accuracy.

SUMMARY OF THE INVENTION

In order to overcome the problem that the traditional web technology cannot be combined with the ship's mechanical operation to balance its calculation speed and accuracy, the present invention provides a ship-lifting simulation method, a storage medium and a system.

The technical solution of the present invention to solve the technical problem is to provide a ship lifting simulation method, which includes the steps of: establishing a three-dimensional model of a freighter; building a driving platform, and importing the three-dimensional model into the driving platform for simulated driving; and building a web platform based on the simulation-driven results to interact with the simulation-driven results on the web platform.

The present invention also provides a storage medium in which a computer program is stored, wherein the computer program is configured to execute the ship lifting simulation method when running.

The present invention also provides a ship lifting simulation system. The ship lifting simulation system includes a processor and a memory, and the memory stores a computer program. When the computer program is executed by the processor, the ship lifting is realized. mock method.

Compared with the prior art, the ship lifting simulation method, storage medium and system provided by the present invention have the following advantages:

With the simulation drive, the correlation and dynamics between the various elements in the working system can be numerically simulated to achieve a good balance between computational speed and accuracy. Moreover, through the web platform, the simulation-driven results can be interacted on the web platform to facilitate more people to learn and communicate.

The specific embodiments of the present invention described above do not limit the protection scope of the present invention. Any other corresponding changes and modifications made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Description of drawings

FIG. 1 is a schematic flowchart of a ship lifting simulation method provided by the first embodiment of the present invention;

FIG. 2 is a schematic diagram of a sub-flow of step 1 in FIG. 1 .

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Please refer to Fig. 1-2, the present invention provides a ship lifting simulation method, which includes the steps:

S1, establish a three-dimensional model of the cargo plane;

Specifically, a three-dimensional model is established according to the structure and size of the ship's crane, that is, a specific three-dimensional graphic is created by using the drawing software through the data of the ship's futures machine, so that the size of each part in the three-dimensional graphic is consistent with the actual mechanism of the ship's crane. and the same size.

Take a specific example to illustrate that after obtaining all the dimensions of the ship's freighter, use Inventor to draw all the single-part models of the ship's freighter, and then use Inventor to assemble all the single-parts to form an overall ship. 3D model of a cargo plane.

Further, step S1 also includes sub-steps:

S11, establish a virtual three-dimensional coordinate system, put the three-dimensional model into the virtual three-dimensional coordinate system, and set the starting coordinates of the parts with motion features in the three-dimensional model;

Specifically, the parts of the ship crane include fixed parts and parts that need to move. The fixed parts usually play the role of fixing, supporting and connecting, while the parts that need to move usually have their moving characteristics, such as Movement modes such as translation and rotation. Whether it is translation, rotation or other motion modes, the part has a starting point of motion. For example, in the process of translation motion, if it moves from the first point to the second point, the first point is the starting point of translation. During the rotation movement, if the rotation is started from the first point, the first point is the starting point of the rotation. Put the 3D model into a virtual 3D coordinate system, so that each part has corresponding coordinates in the 3D coordinate system, and use the coordinates of each part before the movement of the 3D model as the initial position of the part, then the 3D model can be set. The starting coordinates of all parts with kinematics in the model.

It should be noted that the origin of the virtual 3D coordinates can be at any position, as long as the 3D model is included in the 3D coordinate system, and each part of the 3D model is given a corresponding coordinate point in the 3D coordinate system.

S12, establishing a linear interpolation model and a nonlinear differential model according to the starting coordinates and the motion characteristics of the parts with motion characteristics;

Among the parts with motion features in the 3D model, some of the motion features are simple linear motion features, such as the hook of a ship's freighter, which only has linear motion to lift or put down the cargo. Some parts have complex nonlinear motion characteristics, such as the connecting rope connected to the hook in the ship's freighter, which not only swings, but also vibrates after being stressed. Whether it is a simple linear motion feature or a complex nonlinear motion feature, the motion feature is related to the coordinates of its motion starting point. According to the starting coordinates of the part and its corresponding motion feature, the linear interpolation model and nonlinear differential are inserted respectively. Model to summarize the motion of the part. That is, the linear interpolation model is a linear function equation, and the nonlinear differential model is a nonlinear differential function equation. The motion characteristics of the part are linear, and each coordinate corresponding to the motion process is solved by the linear function equation, and the motion characteristics If it is nonlinear, each coordinate corresponding to the virtual three-dimensional coordinate system during its motion is solved by nonlinear differential function equation.

It should be noted that the linear interpolation model and the nonlinear differential model are the motion function equations summed up according to the motion characteristics of the parts and their starting coordinates. Through the function equations, the corresponding coordinates of the parts in the coordinate system during the motion process can be calculated. .

It should be noted that the linear interpolation model refers to an interpolation method in which the interpolation function is a first-order polynomial, and the interpolation error on the interpolation node is zero. Compared with other interpolation methods, such as parabolic interpolation, linear interpolation has the characteristics of simplicity and convenience. Linear interpolation can be used to approximate the original function, and it can also be used to calculate the values that are not in the table in the process of looking up the table.

Nonlinear differential equations (NLPDE), also known as nonlinear mathematical physics equations, nonlinear evolution equations. It is a mathematical model describing nonlinear phenomena in many modern science and engineering fields such as physical chemistry, biology, and atmospheric space science.

S13, according to the linear interpolation model and the nonlinear differential model to solve the motion state of the part with motion characteristics;

After the linear interpolation model and nonlinear differential model are established, the coordinate points in the three-dimensional coordinate system corresponding to the part in the three-dimensional model during the movement process can be calculated, that is, the movement state of the part. For example, when the part is located at the starting coordinate, it is initial state.

Step S2, build a driving platform, and import the three-dimensional model into the driving platform for simulation driving;

Specifically, the driving platform includes a data storage module, a logic processing module and an interface interaction module, wherein the storage module is used to store the data of the three-dimensional model, the data of the three-dimensional model includes original data and image data, and the original data is the data of the parts in the three-dimensional model. The name, the size of the part, the size of the part, the position of the part in the coordinate system, etc., and the image data is the shape, color, etc. of the three-dimensional model. The original data and the image data are interrelated, and the logic processing module is controlled according to the linear interpolation model and the nonlinear differential model, and the display of the simulated motion of the three-dimensional model can be completed in the interface interaction module.

It should be noted that the driving platform is 3ds Max and Unity 3d platform.

Taking a specific example, import the 3D model into the 3ds Max development environment, convert the 3D model into raw data and image data, use the raw data and image data to remodel in 3ds Max, and convert it after modeling File in fbx format. Import the fbx format file into the Unity 3d development platform, insert the linear interpolation model and the nonlinear differential model, and then create the corresponding display interface in Unity 3d. Therefore, the motion simulation of the ship crane can be realized in the Unity 3d development platform, which is a way of expressing the original data through image data.

It should be noted that the remodeling tools in 3ds Max are Mesh, Patch and NURBS.

It should be noted that the programming language used by the Untiy 3d development platform is C#.

Step S3, building a web platform based on the simulation-driven result, so as to display the simulation-driven result on the web platform;

Specifically, the Web is the general term for the Internet, the full name is World Wide Web, abbreviated WWW, that is, the global wide area network, also known as the World Wide Web, which is a global, dynamic interactive, cross-platform based on hypertext and HTTP. Distributed Graphical Information System. Simply put, the Web is an architecture through which linked documents can be accessed across Internet hosts. Common counters, message boards, chat rooms and forums BBS, etc., are all Web applications, but these applications are relatively simple, and the real core of Web applications is mainly to deal with the database. Management Information System (MIS) is the most typical application of this architecture. MIS can be applied to a local area network or a wide area network.

The web platform is a platform that contributes data through the Internet. After completing the simulation and driving of the 3D model of the ship crane, the results of the simulation drive are imported from Untiy 3d to the web platform, so that users can watch the simulation of the 3D model of the ship crane through the web platform. , in order to realize the role of information interaction.

The present invention also provides a storage medium in which a computer program is stored, wherein the computer program is configured to execute the above method steps when running. The storage medium may include, for example, a floppy disk, an optical disk, a DVD, a hard disk, a flash memory, a U disk, a CF card, an SD card, an MMC card, an SM card, a Memory Stick, an XD card, and the like.

The computer software product is stored in the storage medium and includes several instructions for causing one or more computer devices (which may be personal computer devices, servers or other network devices, etc.) to perform all or part of the steps of the method of the present invention.

The invention also provides a ship hoisting simulation system, the ship hoisting simulation system includes a processor and a memory, and a computer program is stored in the memory, and when the computer program is executed by the processor, a ship hoisting simulation method is realized.

Compared with the prior art, the ship lifting simulation method, storage medium and system provided by the present invention have the following advantages:

With the simulation drive, the correlation and dynamics between the various elements in the working system can be numerically simulated to achieve a good balance between computational speed and accuracy. Moreover, through the web platform, the simulation-driven results can be interacted on the web platform to facilitate more people to learn and communicate.

By establishing a linear interpolation model and a nonlinear differential model, the motion law of the crane can be converted into a functional equation, which is convenient for solving the position of the crane parts in the virtual three-dimensional coordinate system when moving.

The specific embodiments of the present invention described above do not limit the protection scope of the present invention. Any other corresponding changes and modifications made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (7)

1. A method for simulating the lifting of a ship, the method comprising the steps of:

establishing a three-dimensional model of the cargo plane;

building a driving platform, and guiding the three-dimensional model into the driving platform for analog driving; and

and building a Web platform based on the result of the analog drive so as to interact the result of the analog drive on the Web platform.

2. A simulation method according to claim 1, characterized by: the establishing of the three-dimensional model of the cargo plane comprises the following steps:

establishing a virtual three-dimensional coordinate system, putting the three-dimensional model into the virtual three-dimensional coordinate system, and setting an initial coordinate of a part with motion characteristics in the three-dimensional model;

establishing a linear interpolation model and a nonlinear differential model according to the initial coordinates and the motion characteristics of the part with the motion characteristics; and

and solving the motion state of the part with the motion characteristic according to the linear interpolation model and the nonlinear differential model.

3. A simulation method according to claim 2, characterized by:

the driving platform comprises a data storage module, a logic processing module and an interface interaction module, wherein the data storage module stores data of the three-dimensional model, the logic processing module controls the three-dimensional model to carry out simulation driving according to the linear interpolation model and the nonlinear differential model, and a simulation driving result is displayed through the interface interaction module.

4. A simulation method according to claim 3, characterized by:

the data of the three-dimensional model comprises original data and image data, wherein the original data are the name of a part in the three-dimensional model, the size of the part and the position of the part in a coordinate system, and the image data are the shape and the color of the three-dimensional model.

5. A simulation method according to claim 2, characterized by:

the linear interpolation model and the nonlinear differential model are motion function equations induced according to the motion characteristics of the part and the initial coordinates of the part, and the corresponding coordinates of the part in the virtual three-dimensional coordinate system in the motion process can be calculated through the function equations.

6. A storage medium, characterized by:

the storage medium having stored thereon a computer program, wherein the computer program is arranged to execute the vessel lifting simulation method according to any of the claims 1-5 when run.

7. Vessel crane simulation system, comprising a processor and a memory, the memory having stored thereon a computer program which, when executed by the processor, implements a vessel crane simulation method according to any of claims 1-5.

Images