Research on Interaction for Virtual Assembly System with Force Feedback

2010 ◽  
Author(s):  
Chen Cheng-jun ◽  
Wu Yun-feng ◽  
Li Niu
Keyword(s):  
Force Feedback ◽  
Virtual Assembly ◽  
Assembly System

MIVAS: A Multi-Modal Immersive Virtual Assembly System

2004 ◽  
Author(s):  
Huagen Wan ◽  
Shuming Gao ◽  
Qunsheng Peng ◽  
Guozhong Dai ◽  
Fengjun Zhang
Keyword(s):  
Virtual Environments ◽  
Large Scale ◽  
Force Feedback ◽  
User Interaction ◽  
Virtual Assembly ◽  
Research Area ◽  
Optimization Techniques ◽  
Assembly System ◽  
Assembly Operations ◽  
Assembly Constraints

Evaluation and planning of assembly processes in virtual environments have become an active research area in engineering community. However, planning of complex assemblies in virtual environments, especially large-scale virtual environments, is still hindered by limitations like unnatural user interaction, insufficient frame rates, and deficiencies in processing of assembly constraints. In this paper, we present MIVAS, a Multi-modal Immersive Virtual Assembly System. By viewing the virtual assembly system as a finite state machine, we incorporate tracked devices, force feedback dataglove, voice commands, human sounds, fully immersive 4-sided CAVE, together with optimization techniques for both complex assembly models and assembly operations to provide for engineers an intuitive and natural way of assembly evaluation and planning. Testing scenarios on disassembling different components of an intelligent hydraulic excavator are described. Special attention is paid upon such technical issues as interface between CAD packages and the CAVE virtual environment, natural and intuitive user interaction including realistic virtual hand interaction and force feedback, intelligent navigation for assembly operations, and real-time display of complex assemblies.

Research on Force Feedback-Based Tool Operation in Virtual Assembly

2010 ◽  
Vol 29-32 ◽  
pp. 1046-1050 ◽  
Author(s):  
Cheng Jun Chen ◽  
Yun Feng Wu ◽  
Niu Li
Keyword(s):  
Force Feedback ◽  
Virtual Assembly ◽  
Assembly System ◽  
Assembly Operation ◽  
Motion Constraints ◽  
Operation Method ◽  
Initial Stage

To verify the accessibility and workspace of tool operation in virtual assembly system, this paper presented a tool-part operation method based on force feedback. According to characters of common tool-part operations, standard fastening tools and parts were modeled using features and parameters at initial stage. Then operator was enabled to conduct different kinds of fastening and unfastening operations in virtual assembly system by three steps namely identification, interactive positioning and operation. With feedback force, the operator can feel corresponding motion constraints of tool during virtual fastening and unfastening operation, so the immersion of virtual assembly operation is promoted.

Research and Development of CA6140 Virtual Assembly System

2014 ◽  
Vol 621 ◽  
pp. 558-563
Author(s):  
X.M. Li ◽  
Ya Lin Shen ◽  
L.H. Zhu
Keyword(s):  
Employee Training ◽  
Virtual Assembly ◽  
3D Models ◽  
Assembly System ◽  
Motion Simulation ◽  
Virtual Technology ◽  
Working Principle ◽  
Programming Software ◽  
Indispensable Tool ◽  
Visual Basic 6.0

On the basis of analyzing assembly process of main structural components in CA6140 lathe, 3D models for those components were established with CAD software UGNX6.0. Virtual assembly and motion simulation of the structure parts were performed with virtual technology. A set of virtual assembly system of CA6140 engine lathe was developed with programming software Visual Basic 6.0. It contains six main modules about spindle box, feed box, apron, tailstock, turret, etc. Dynamic simulation and motion simulation of the corresponding components in entity lathe can be realized, respectively. And also, mechanical structure, working principle, assembly relation between different components and motion transmission process of the lathe can be realistically reproduced with the system. This virtual assembly system not only can be used to analyze and transform old products, but also can be used in new products development, and to some extent, can be used to replace the prototype. It is an indispensable tool in the employee training and mechanical engineering activities.

The Modeling and Locating Technology of Assembly\Disassembly Tools in Virtual Environment

2013 ◽  
Vol 483 ◽  
pp. 229-233
Author(s):  
Yi Liu ◽  
Shi Qi Li ◽  
Jun Feng Wang
Keyword(s):  
Real Time ◽  
Virtual Environment ◽  
Virtual Assembly ◽  
Vector Model ◽  
Assembly System ◽  
Virtual Scene ◽  
Matching Constraints ◽  
Point Vector

This paper presents a feasible approach for modeling and locating of assembly\disassembly tools in the virtual scene: First, a novel point-vector model for tool is presented by means of abstracting the locating constraints of tools; Then, the mapping relationship for locating constraints between tools and parts is detailed; Finally, the best matching constraints algorithm is proposed on basis of point-vector model, which can calculate the locating constraints to the triangle model of part in real time. The proposed method has been integrated in the virtual assembly system to solve practical assembly problems.

Virtual Assembly Operation Modeling Based on Colored Petri Net

2010 ◽  
Vol 431-432 ◽  
pp. 237-240 ◽  
Author(s):  
Peng Chen ◽  
Ping Jun Xia ◽  
Yue Dong Lang ◽  
Ying Xue Yao
Keyword(s):  
Petri Net ◽  
Early Stage ◽  
Virtual Assembly ◽  
Assembly System ◽  
Colored Petri Net ◽  
Stage Design ◽  
Assembly Operation ◽  
Cpn Tools ◽  
Early Stage Design ◽  
Mathematical Presentation

In this paper, a Colored Petri Net modeling method for early stage design of virtual assembly operation is presented. The characteristics of virtual assembly system, Petri Net and Colored Petri Net are analyzed. Some previous work in Petri Net application in assembly and virtual assembly system is discussed. The theoretical aspects of Colored Petri Net are introduced mathematically. Based on the mathematical presentation and the process of fasteners assembly operation, a Colored Petri Net model is constructed for the simulation of assembly operation in virtual environment. With CPN Tools software package, the simulation for evaluating the feasibility of modeling is implemented. It is demonstrated that the modeling approach can support the early stage design of virtual assembly system.

The Display and Free Rotation of 3D Model in Virtual Assembly System Based on ACT

2012 ◽  
Vol 588-589 ◽  
pp. 1178-1183 ◽  
Author(s):  
Du Jiang ◽  
Kai Qiang Ji
Keyword(s):  
Human Computer Interaction ◽  
3D Model ◽  
Virtual Assembly ◽  
Assembly System ◽  
Free Rotation ◽  
Development Tool ◽  
Constraint Transformation ◽  
Computer Interaction

We proposed a theory of assembly constraint transformation (ACT), and achieved the display and free rotation of 3D model using OpenGL graphics standard as interface, VC+ + 6.0 as the development tool, and ArcBall algorithms as the basic application, making it easy to accomplish Human-Computer Interaction through the mouse control in virtual assembly.

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