Multigen Creator Research Articles

The Application of Virtual Reality Technology in the Housing Display System

This paper takes the virtual reality technology as a core, has established the housing virtual reality roaming display system, Under the premise of the detailed analysis of system architecture, We focus on how to form the terrain database and the scenery three-dimensional database by using the MultiGen Creator, and call OpenGVS through MSVC to carry on the real-time scene control and the method of the complex special effect realization.

Propellant Filling Equipment Simulation for Virtual Assembly

3D models of propellant filling equipment were constructed by using Autodesk Inventor, and assembly relation model was established by using connection graph method. Movement attribute was set and the models were romanced in Multigen Creator. A virtual scene of propellant filling equipment was set up, and assembly process demonstration and interactive operation simulation were achieved by using Vega Prime. Maintenance personnel training in the virtual assembly environment gets a good result.

Modeling and Simulation for Dynamic Effect in 3D Virtual Scene System

Aiming at difficulty of modeling and simulation for dynamic effect in 3D virtual scene system, some methods combined with Multigen creator and Vega Prime are put forward. Firstly, rise-descend and rotation effect are simulated by adopting DOF node. Secondly, screen-show effect is realized with using switch node. Thirdly, some dynamic effects such as rolling wheel are simulated based on multiple textures mapping technology. Finally, object positioning dynamically based on coordinate transforming is proposed.

Scene Modeling and Driving of a Visual Simulation System

This paper designed the design scheme of a visual simulation system for tower cranes, and described the methods of modeling scene and manufacturing texture according to the characteristics of Multigen Creator software and Vega virtual software. The five model optimization techniques including levels of detail technique, instancing technique, removing redundant faces, billboard technique and external reference were discussed in the modeling process. In order to improve system running speed, the methods of reducing the face number of the models and save memory spaces were investigated. Scene driving was realized in programming environment of VC++ software. Finally the scene modeling and driving of visual simulation system for tower cranes were completed.

Simulation on Obstacle Avoidance Method for Multi-Robots in Movement Control Process

Obstacle avoidance in move control process is a key intelligent technology in robot control. As one of the most basic and important topics the problem of mobile robot path planning solve the trouble that the robot avoid obstacles in the environment and how to successfully reach the destination. This paper introdues the artificial potential field method for robot obstacle avoidance. Then this paper presents the simulation on obstacle avoidance method for multi-robots in move control process. Firstly, the paper introduces simulation on obstacle avoidance method in matlab environment. Second, this paper introduces simulation on obstacle avoidance method in movement process for multi-robots using software Multigen Vega and Multigen Creator to realize. At last, simulation results show the movement process for multi-robots in multiple obstacles. Multi-robots have good obstacle avoidance effect.

A Type of Fighter Dynamics Modeling and Simulation

Dynamics model of fighter was proposed in order to drive on flight simulator virtually. The model took Lagrange equation as basis and simplified analysis of the force on fighter according to the real-time input state information from joystick. The dynamics equation was solved in real time using Runge-Kutta method (RK4). It was proved finally that the model and simulation algorithm had higher dependability through datum and simulation scene which was obtained with graphics engine OpenGVS and 3D visual modeling Software Multigen Creator.

Design and Implementation of Virtual Interactive Scene Based on Unity 3D

This paper demonstrates three-dimensional modeling method of virtual reality, and presents a 3D interactive virtual scene design based on the Unity 3D technology, combined with AutoCAD, MultiGen Creator and Unity 3D software platform. In this process, the scene and different format file has been optimized, the network interactive viewing of virtual scene is realized too. It focuses on an example designed to obtain a better real-time, interactive and good visual effects.

Design and Implementation of Real-Time 3D Cruise Missile Simulation Training System Based on Vega Prime

Three-dimension scene simulation technology of virtual environment maybe widely applied in many fields such as virtual battlefield, tourist industry and city planning. The technique has been applied to the research of “Virtual Battlefield” which provides a new research topic in the today’s world. And simulation training system of cruise missile is very important in the whole R&D (Research and Development) process because of the complexity and uncertainty of the real battlefield environment. In this paper, in allusion to the problem of simulation training system of cruise missile GUI, some key technologies about how to realize the system are introduced, including 3D modeling, object picking up, multi-channel comparison, object hierarchical display and so on. Accordingly, the six freedom motion simulation system is presented, which was established by Visual C++. Secondly, establishing cruise missile entity model in Multigen Creator and putting it into the vision simulation system that is build up by Vega Prime. At lastly, combining two simulation systems into an integrity one. The integrity simulation system performed well in test.

Modeling and Dynamic Simulation of Tracked Vehicle in Vortex

Real-time calculation of dynamics model is one of the key technologies in the driving simulator. A multi-body dynamics model of tracked vehicle was developed using the Vortex software. The sinusoid superposition method was exploited to extend the 2-D road surface spectrum and to establish the 3-D road roughness elevation data in accord with the state standard. Then the elevation data were imported into Multigen Creator to construct the 3-D virtual road. Including the vehicle model, the virtual reality system was created. In the simulation of riding comfort, the responses of the vehicle were obtained when the vehicle traversed under road excitation of D grade with constant speed. The result shows that the system offers good immersion and real-time performance. It is feasible to be applied to the tracked vehicle driving simulator.

Research on the Emergency Virtual Model

The analysis of the driving behavior based on virtual reality plays an important role to guarantee the traffic safety. Multigen Creator is used in this paper to establish a 3D model of virtual driving scene of urban road, and then Vega Prime and VC are used to drive the model. At last, two typical virtual model of emergent scenes in the crossing are established. The model is useful to the research on the driver behavior.

The Presence Research on 6-DOF Tank Driving Simulator

with computer graphics technology continually improved, visual simulation system development of sports simulators has become the hotspot. The structure and work principle of 6-DOF tank virtual driving simulator are presented, motion simulation of driven equipment are done by developed based on advanced simulation software(MultiGen Creator and OpenGVS SDK), which is combined with the Object-Oriented method. Dynamics model of simulate system is established , object model is disposed and collision detection is briefly analyzed. The immersion of this visual simulation has been confirmed experimentally.

Human-Computer Interface Design for Simulation of Activity-Travel Patterns

Time-space patterns of activity-travel are very complex, because the individual movement in time-space is a complex trajectory with many interacting dimensions. Potentially huge amounts of time-space data will be collected for different purposes by GPS receivers, and existing analytical tools in GIS may prove to be insufficient to handle these data. The purpose of this paper is to design a human-computer interface to model and visualize mobile objects with GPS data, in order to find an effective method to construct interactive manipulative 3D-GIS software of activity-travel patterns. The methods of 3D geographical data gathering and 3D map modeling are also present to support the analysis, display, and animation of time and space data. A prototype was implemented using the software of Multigen Creator and Vega to analyze GPS-recorded travel data in the city of Changchun, China. It allows the user to interact and explore the 3D map. Not only the visual properties of objects can be altered to reflect their various attributes, the highly flexible viewing and navigational environment is also a great help to the users.

Design and Realization of Equipment Training Simulator

A method of building communication equipment simulator aiming at the difficult problem of large equipment training is presented. Simulator is built based on virtual reality and its framework is designed to layered architecture and framework. Geometry model of equipment simulator is created with software named Multigen Creator. Its key technologies including geometry modeling, training environment modeling, operation action modeling and simulation driving are detailed. Finally, plug-in software framework is adopted to development the simulator and simulation examples of certain integrated tactical communication simulator is introduced to prove its feasibility of this method. It can provide beneficial reference for constructing similar large-scale equipment training simulator.

Simulation of a large-scale linear move irrigator using virtual reality technology

Abstract: Spray Irrigation is more excellent in water-saving and yield-increasing than other irrigation methods. Large scale linear move spray irrigation system is widely used in China. But the traditional go-stop-go driving method made the linear move irrigator hard to control and get bed irrigation efforts. Thus new control way with high efficiency in operation and low consuming of water, electricity, other materials and human resource is needed to develop to avoid this problem. Because of the difficulty of examination, virtual reality technology is used to simulate the controlling and driving system in this thesis. Build three-dimension models of the irrigation system departments according to their scale with Pro/ENGINEER, and three-dimensional scenes of farmland with Multigen Creator software, as well as mechanical models of the irrigation system according to the principles of ground vehicle dynamics. Visual C + + 6.0 and Multigen Vega were used to program an application, which load the three-dimension models of the irrigation system into the scenes of farmland. Then simulated the control system and drive system to monitor in real-time and optimize the system

Simulation of a large-scale linear move irrigator using virtual reality technology

Abstract: Spray Irrigation is more excellent in water-saving and yield-increasing than other irrigation methods. Large scale linear move spray irrigation system is widely used in China. But the traditional go-stop-go driving method made the linear move irrigator hard to control and get bed irrigation efforts. Thus new control way with high efficiency in operation and low consuming of water, electricity, other materials and human resource is needed to develop to avoid this problem. Because of the difficulty of examination, virtual reality technology is used to simulate the controlling and driving system in this thesis. Build three-dimension models of the irrigation system departments according to their scale with Pro/ENGINEER, and three-dimensional scenes of farmland with Multigen Creator software, as well as mechanical models of the irrigation system according to the principles of ground vehicle dynamics. Visual C + + 6.0 and Multigen Vega were used to program an application, which load the three-dimension models of the irrigation system into the scenes of farmland. Then simulated the control system and drive system to monitor in real-time and optimize the system