This paper introduces a kind of interactive truck crane simulation platform based on the virtual reality technology, on which can complete the simulation experiment of the crane's movement. The framework and working principle of the interactive truck crane simulation platform are discussed in the paper, while landing leg and hook are used as an example to show the motion control mechanism of truck crane components.
The interactive truck crane simulation platform uses the browser-based structure, Java3D, virtual reality and Java Applet, etc. Time-Dynamic Visualization See our first-class support for high-fidelity time-dynamic simulation, real-time telemetry streaming, and 4D visualization. Community Demos We are amazed by the incredible apps the community builds.
It combines architecture for web services with familiar concepts, such as organised projects, secure messaging, presence awareness and real-time online meetings. This system mainly focuses on business processes but also allows design engineers to share 3D data, created with diverse authoring tools and consequently, product development can be managed.
It includes PLM business process applications that cover a wide range of processes, including product planning, development and sourcing, and program management. Furthermore, it allows diverse design disciplines to be synchronised around design activities and changes, by reducing the critical errors and cost associated with poor collaboration. SolidWorks eDrawings [6.
In the past, many research approaches and applications were focused on the use of virtual reality VR in order for the complexity of product design and manufacture to be overcome [6. They may include human simulations for performing an ergonomic analysis of virtual products or assembly processes [6.
In recent years, research has also presented several applications of augmented reality AR , ranging from games and education to military, medical and industrial applications [6. Dempski presented the idea of context-sensitive e- commerce using AR. She used furniture shopping as an example to show 3D and full sized representations of virtual objects in a physical living room [6.
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Around the same time, Zhang et al. A marker plate is shown in a live video stream.
The system recognises this plate and superimposes animated 3D models of real products. Despite the investment made in the last years, both in research and in industrial applications, the global market still lacks collaboration tools capable of providing AR and VR techniques with the possibility of product design evaluation.
Most collaborative tools are more related to a PLM environment and less to shared virtual environments VEs. Thus, the developments in the context of this work are focused on the conceptualisation and pilot implementation of a web-based platform for product collaborative design and evaluation, called Collaborative Product Reviewer CORE. The platform includes links to VR and AR viewers in order to support the advanced visualisation of a product, as well as to provide multi-user navigation and interaction capabilities.
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Its aim is to support real-time collaboration within a virtual environment for product design, prototyping, manufacturing and worker training. The CME is expected to provide users with advanced capabilities, including visualisation, group presence, interaction, information sharing, knowledge management and decision making.
The CME addresses the major activities in digital factories, namely product development, factory design and evaluation, as well as workforce training. Three pillars, Presence, Collaboration and Ergonomics, underpin the methodological and technical realisation.
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Since the digital factory of the future is a human-centred CME, it will be the human factors that will play the critical role for the foundation of the three pillars. Six basic modules will be integrated into the proposed CME three of them at the system level and another three at the application level in order for the respective activities to be supported Figure 6. It deals with the software aspect related to the visualisation, perception and interaction. This is important for the developers of the application components.
A user requirements analysis, especially addressing the needs of small and medium sized manufacturing companies, showed that such a tool should help the appropriate actors to share and manage design data, to review the data by visualising and interacting with the virtual product, to communicate their views and make remarks online, and finally to keep track and manage the outputs of the review session in order to provide feedback to the design process.
Figure 6. The CORE workflow is a broad description of the key phases of any product design application, inside the digital factory, and specifies the way this platform answers to design needs Figure 6. From a technological point of view, the CORE concept lies in the integrated use of synchronous web-based collaboration with virtual and augmented reality-based visualisation and interactions. The basis is a web-based platform, which enables the remote access of dispersed actors to a working session.
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Tools for multi-user interaction and navigation in the same virtual environment are provided. Advanced functionality for product visualisation and customised demonstration over the web is provided through VR and AR viewers. User-friendly interfaces allow the active participation of non-experts in the design process, facilitating for example, the on- line recording of customer preferences. The architecture follows the three-tier example and includes three layers namely: a the data layer, b the business layer, and c the presentation layer Figure 6.
These layers communicate through the Internet or an Intranet, depending on the type of communication. Some characteristics, such as data locking, consistency and replication, ensure the integrity of data. The architecture of this level can be analysed further and divided into the connection mechanism between the mainframe PC and the application JavaServer as well as the Java Bean Architecture, which contains the work-division planning algorithm and the database interactions.
Internet Explorer, Mozilla, etc. By the time the project-related files are uploaded, a new version of the selected project will be automatically created into the database. Communication among the CORE platform and other external applications, such as databases, is also feasible. Communication interfaces between the web platform and the viewers 6.