面向并行设计的虚拟原型技术研究

虚拟原型技术是在虚拟的逼真环境下,对产品设计信息进行协同仿真验证的有效手段,它可有效支持并行设计,缩短产品开发周期,在分析了虚拟原型与并行的关系后,提出了基于域对象的虚拟原型建模与仿真方法,并阐述了支持虚拟原型的集成框架的关键技术。     

The programmable network prototyping system

The programmable network prototyping system (PNPS) uses a collection of reusable hardware modules that implement generic communications functions such as transmission, reception, signal propagation, and pattern matching. These modules are interconnected and configured to emulate a variety of communication networks whose behavior can be monitored under different load conditions. The user specifies a network as a set of interacting components using available software tools. These tools are accessible within a prototyping environment that includes a control system for configuring the hardware modules and interconnecting them according to the component specifications. Previously designed components are stored in a library and can be used to specify new networks. Although PNPS is designed to provide a prototyping environment for communication networks, some of the basic ideas can be useful in other contexts     

Concurrent design of a three-link manipulator prototype

This paper presents an affordable and comprehensive robotic model of critical aid to any engineering school involved in teaching robotics. We present the stages of designing a three-link robot manipulator prototype that was built as part of a research project for establishing a prototyping environment for robot manipulators. Building this robot helped to determine the required subsystems and interfaces for building the prototyping environment, and provided hands-on experience for real problems and difficulties that are addressed and solved using this environment. The robot is now successfully used as an educational tool in robotics and control classes.     

Rapid prototyping of an ATM programmable associative operator

In this paper, we describe a semi-automatic method for designing a programmable architecture related to high speed communication protocols. A case study of associative based architecture of high speed communication system is presented with a validation environment. The environment provides an interesting estimation using XILINX prototyping board including memories (content addressable memory, CAM, RAM, DPRAM). In our approach, we try to perform a rapid prototyping of such architecture and allow the designer to interact easily in order to customize the architecture according to application requirements. This method of validation provides important benefits in hardware prototyping: better validation environment and reduced time to give a real estimation for a large variety of applications.     

Knowledge-Based Integration Between Virtual and Physical Prototyping for Identifying Behavioral Constraints of Embedded Real-Time Systems

Rapid prototyping methods are in need of autonomous decision making and analysis during the product development stages so that the ldquotime-to-marketrdquo can be reduced faster than traditional product development methodologies. Therefore, new methods of prototyping are inevitably essential. This paper proposes an approach to utilize the benefits of virtual prototyping (VP) and physical prototyping (PP) methodologies by integrating them into knowledge-based systems (KBSs) by providing seamless connection. This approach is termed autonomous integrated prototyping. The main contribution of this paper is the development of an intelligent system architecture to facilitate and guide the product development autonomously and simultaneously in both VP and PP environments. The seamless connection between VP and PP, along with KBSs, enables the exploration of new behaviors of developing systems and analyzing different behaviors. The architecture is applicable to embedded real-time systems (ERTSs), sensor applications, robotics, and ubiquitous applications where system interaction with the external environment is necessary.     

Rapid and flexible prototyping through a dual-robot workcell

With the advancement of CAD/CAM and robot technologies, applying robots for rapid prototyping applications has become a growing trend. However, a single robot can only perform limited prototyping tasks. Compared to a single robot, a dual-robot workcell can have greater structure flexibility, production efficiency, and system reliability due to the inherent parallelism and duality of robots. This paper presents the development and implementation of a dual-robot workcell for prototyping of 3D models. First, kinematic models of both robots in the workcell are established. Then, the concepts of five-axis machining configurations, postprocessing, off-line robot path generation and the dual-robot control scheme are presented. Finally, details of cutting experiments are provided to demonstrate the effectiveness of the system. The results show that the proposed dual-robot workcell is flexible and efficient for prototyping complex components in the current industrial environment.     

快速原型虚拟逼真设计原理及体系结构

在分析设计的特点和发展趋势的基础上,提出快速原型虚拟逼真设计,并对其特点和原理进行了讨论,快速原型虚拟逼真设计是面向并行工具,基于虚拟原型和虚拟环境仿真的设计,强调虚拟原型的快速生成和演化,在关键技术,原型系统以及开发环境三个层次上论述了快速原型虚拟逼真设计的研究,提出快速原型虚拟逼真设计模型以及基于该模型的体系结构。     

基于可视外部力/力矩隐喻工具的虚拟样机动力学交互分析方法

在虚拟样机动力学分析中，对施加的外部力／力矩的属性和作用进行了分析，实现了力／力矩隐喻(metaphor)工具在虚拟环境中的直观定义，并基于多刚体Lagrange动力学模型提出直观驱动的交互仿真方法，建立了可视化隐喻工具同虚拟样机间交互分析过程的动力学广义模型．简化了虚拟环境中用户同虚拟对象间的交互行为模型．最后．通过对汽车发动机曲柄活塞部分建立Lagrange动力学模型．并以建立的隐喻工具进行交互分析的实例论证了该方法的有效性以及隐喻工具的直观性．     

Automated Tools for Rapid Prototyping

An automated environment is presented which aids the software engineers in developing data processing systems by using rapid prototyping techniques.The environment is being developed on VAX station.It can render good support to the specification of the requirements and the rapid creation of prototype.The goal,the methodology,the general structure of the environment and two sub-systems are discussed.