Design and Development of Virtual Assembly Prototype System for CLEAR-I

2014 ◽  
Author(s):  
Leiming Shang ◽  
Zihui Yang ◽  
Jinbo Zhao ◽  
Tao He ◽  
Liqin Hu
Keyword(s):  
Virtual Assembly ◽  
Prototype System ◽  
Scene Modeling ◽  
Virtual Reality Technology ◽  
Assembly Simulation ◽  
Key Points ◽  
Chinese Academy Of Sciences ◽  
Academy Of Sciences ◽  
Preliminary Application ◽  
Subcritical System

China LEAd-based research Reactor (CLEAR-I), which is one part of Accelerator Driven subcritical System (ADS) proposed by Chinese Academy of Sciences. Assembly scenario simulation is part of the CLEAR-I R&D project, enabling their suitability for the environment or scenario key points to be verified, taking into account unexpected situations and providing technical answers. Based on virtual reality technology, a virtual assembly prototype system for CLEAR-I has been developed for training, ergonomics evaluation, safety and security purposes. Main capabilities of system include: 1) CAD-based virtual scene modeling; 2) immersive experience in virtual environment; 3) interactive virtual assembly simulation of complex components. The paper describes the system architecture, main methods and its preliminary application to CLEAR-I.

Assembly-Design-Oriented Semantic Modeling and Assembly Configuration Simulation in Virtual Environment

2015 ◽  
Author(s):  
Xiumin Fan ◽  
Li Tian ◽  
Qichang He ◽  
Keyan Liu
Keyword(s):  
Virtual Assembly ◽  
Prototype System ◽  
Semantic Modeling ◽  
Assembly Design ◽  
Assembly Simulation ◽  
Assembly Features ◽  
Cad Models ◽  
Dynamic Assembly ◽  
Configuration Simulation ◽  
Product Assembly

Usually, virtual assembly simulation is based on fixed assembly relationships between parts which are extracted from product’s CAD models. And virtual assembly systems is mainly used to evaluate product assemblability. In order to enhance the function of virtual assembly system to more assembly-design-oriented, a method of dynamic assembly configuration based on part’s semantic modeling is presented. The part’s semantic model contains assembly features, semantic attributes and physical properties of a part. The uniformed part semantic information is defined based on part’s STEP models and described in XML format. Assembly process simulation for dynamic assembly relationship configuration is realized by semantic reasoning, such as the reasoning to determine mating parts, mating positions, construction/solving/navigation of geometry constraints, and generation and modification of assembly relationships. The method supports the assembly processes simulation from single parts to produce the entire assembly in the virtual environments and works without predefined associations between parts. A prototype system is developed and demonstrated with an excavator. The results show that different assembly configurations for product assembly design can be obtained and the assemblability can be evaluated during the virtual assembly simulation process.

Realization and Application Method of Mechanisms Motion Simulation in Virtual Assembly System

2011 ◽  
Author(s):  
Zhixian Zhang ◽  
Jianhua Liu ◽  
Yang Liu
Keyword(s):  
Physical Simulation ◽  
Virtual Assembly ◽  
Assembly System ◽  
Prototype System ◽  
Mechanism Analysis ◽  
Motion Simulation ◽  
Application Range ◽  
Application Method ◽  
Assembly Simulation ◽  
Important Research Topic

In recent years, physical simulation is a new trend of virtual assembly (VA) technology. As a part of physical simulation, mechanisms motion simulation is an important research topic. In order to realize the mechanisms motion simulation in VA system, we presented the realization and application method of mechanisms motion simulation in virtual assembly system combining the prototype system, Virtual Assembly Process Planning (VAPP). We described the bottom framework of VAPP system used for mechanisms motion simulation. Then based on the support of bottom platform, we studied the realization method of mechanisms motion simulation and apply mechanisms motion simulation to virtual assembly simulation via some technologies in VAPP system. Our research shows that, simulating mechanisms motion in VA system not only realizes the visualization of mechanism analysis and simulation, but also improves the ability of analysis of VA system effectively and extends the application range of VA system.

scholarly journals Research on Operation Analysis and Evaluation Method of Ergonomics for Virtual Assembly

2018 ◽  
Vol 214 ◽  
pp. 04003
Author(s):  
Guobin Gou ◽  
Xu Zhang ◽  
Yuehui Yan
Keyword(s):  
Virtual Reality ◽  
Evaluation Method ◽  
Rapid Development ◽  
Virtual Assembly ◽  
Production Cycle ◽  
Assembly Process ◽  
Virtual Reality Technology ◽  
Industrial Manipulator ◽  
Assembly Simulation ◽  
Assembly Technology

With the rapid development of digital technology and virtual reality technology, virtual reality technology has been paid more and more attention by more and more people. To investigate the application of virtual assembly simulation and improve ergonomics, the study on the interactive assembly operation has been performed. A Comprehensive Evaluation Method for ergonomics based on simulation of virtual assembly operations is proposed, aiming at avoid inadequate working postures, effectively improve assembly quality and shorten the production cycle. In this paper, the virtual assembly technology is introduced to the assembly process of an industrial manipulator. Details of the virtual assembly simulation process of an industrial manipulator design and its implementation are presented. This proposed method provides great support to the design of assembly process and brings about good change in the ergonomics of machine and system visualization. The analysis of this instance plays a guiding role in the optimization of human factors engineering.

scholarly journals Preface to the Interfacial Science Developments at the Chinese Academy of Sciences Virtual Special Issue

Langmuir ◽  
2020 ◽  
Vol 36 (41) ◽  
pp. 12087-12087 ◽  
Author(s):  
Yilin Wang ◽  
Shaoyi Jiang ◽  
Zhan Chen ◽  
Shu-Hong Yu ◽  
Gilbert Walker
Keyword(s):  
Special Issue ◽  
Interfacial Science ◽  
Chinese Academy Of Sciences ◽  
Academy Of Sciences

Two new species of the spider genus Pholcus Walckenaer, 1805 (Araneae: Pholcidae) from Pakistan

Zootaxa ◽  
2020 ◽  
Vol 4820 (1) ◽  
pp. 177-185
Author(s):  
TIANQI LAN ◽  
ZHIYUAN YAO ◽  
ABID ALI ◽  
GUO ZHENG ◽  
SHUQIANG LI
Keyword(s):  
New Species ◽  
Species Group ◽  
Male And Female ◽  
Female Type ◽  
Chinese Academy Of Sciences ◽  
Two New Species ◽  
Academy Of Sciences ◽  
Gilgit Baltistan ◽  
First Time ◽  
Beijing China

The genus Pholcus Walckenaer, 1805 is reported from Pakistan for the first time. Two new species of the Pholcus nenjukovi species-group are described: Pholcus hamuchal Yao & Li sp. nov. (Gilgit Baltistan, male and female) and Pholcus kalam Yao & Li sp. nov. (Khyber Pakhtunkhwa, male and female). Type material is deposited in the Institute of Zoology, Chinese Academy of Sciences (IZCAS) in Beijing, China.

scholarly journals The New Evolution for SIA Rotorcraft UAV Project

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
Juntong Qi ◽  
Dalei Song ◽  
Lei Dai ◽  
Jianda Han ◽  
Yuechao Wang
Keyword(s):  
Control Method ◽  
Test Bed ◽  
Advanced Control ◽  
Autonomous Mode ◽  
Chinese Academy Of Sciences ◽  
Aerial Vehicle ◽  
Active Modeling ◽  
Rotorcraft Uav ◽  
The One ◽  
Academy Of Sciences

This paper describes recent research on the design, implement, and testing of a new small-scaled rotorcraft Unmanned Aerial Vehicle (RUAV) system—ServoHeli-40. A turbine-powered UAV weighted less than 15 kg was designed, and its major components were tested at the Shenyang Institute of Automation, Chinese Academy of Sciences in Shenyang, China. The aircraft was designed to reach a top speed of more than 20 mps, flying a distance of more than 10 kilometers, and it is going to be used as a test-bed for experimentally evaluating advanced control methodologies dedicated on improving the maneuverability, reliability, as well as autonomy of RUAV. Sensors and controller are all onboard. The full system has been tested successfully in the autonomous mode using the multichannel active modeling controller. The results show that in a real windy environment the rotorcraft UAV can follow the trajectory which was assigned by the ground control station exactly, and the new control method is obviously more effective than the one in the past year's research.

Industry Watch

2007 ◽  
Vol 11 (22) ◽  
pp. 1468-1482
Keyword(s):  
Clinical Trial ◽  
Stem Cell ◽  
Tamil Nadu ◽  
Point Of Care ◽  
Opioid Therapy ◽  
Phase Iii ◽  
Cancer Drugs ◽  
Phase Iii Clinical Trial ◽  
Chinese Academy Of Sciences ◽  
Academy Of Sciences

Arana Therapeutics Completes Project with CSL. Biotech Capital to Invest $2.2 Million in Generic Health Pty Ltd. Phase III Clinical Trial for “Dual Opioid” Therapy. Beijing Med-Pharm Announces Exclusive Agreement to Market Enablex in China. Genesis Pharmaceuticals Collaborates with the Institute of Microbiology, Chinese Academy of Sciences. NPIL and Merck Collaborate on Cancer Drugs. LifeCell Launches First Stem Cell Center in Tamil Nadu. Japan's Bioventures Today — BCS, Inc. Bio-Rad Launches In2it A1C Analyzer for Point-Of-Care Diabetes Testing.

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