Computer. Feb 1995, Vol. 28 Issue 2, p26, 9 p. photograph
Multiprocessors -- Design and construction and Prototypes, Engineering -- Evaluation
The Rapid Prototyping engine for Multiprocessors (RPM) facilitates rapid prototyping of diverse multiprocessor architecture. RPM project aims to develop a common, configurable hardware platform for the precise emulation of multiple-instruction, multiple-data systems having nearly eight execution processors. Rapid prototyping of multiprocessors is based on hardware emulation to facilitate design verification and performance assessment.
Mechanical Engineering-CIME. May 2007, Vol. 129 Issue 5, p22, 1 p.
Prototypes, Engineering -- Evaluation, Prototypes, Engineering -- Usage, Prototypes, Engineering -- Product information, and Machinery industry -- Product information
Rapid prototyping began as a way to produce three-dimensional prototypes directly from digital CAD files. Yet proponents have always maintained that faster prototyping machines and better materials could allow companies [...]
Stereolithography -- Equipment and supplies, Prototypes, Engineering -- Evaluation, and Models and modelmaking -- Equipment and supplies
An industrial technique called rapid prototyping is gaining acceptance among molders. Developers and builders of rapid prototyping machines are experiencing an increase in sales and the road to profitability seems near. Some of these developers are Stratasys Inc., Helysis Inc., DTM Corp. and Prototype Express Inc. Although the machines are relatively expensive, more customers are realizing the value of rapid prototyping.
Journal of Dynamic Systems, Measurement, and Control. Dec 1995, Vol. 117 Issue 4, p520, 7 p. chart
Robots -- Dynamics and Prototypes, Engineering -- Evaluation
This paper describes a technique for improving dynamic performance of robots by recursively modifying the mechanical structure through prototyping and experimentation. In each recursion, a prototype robot is tested and evaluated experimentally, an incremental change in structure design is determined based on the analysis of the experimental data, and the mechanical structure is physically modified so as to drive the plant dynamics towards a desired response. To expedite the iterative process, (i) a rapid prototyping technique using photo-polymerization is developed, (ii) a gradient descent method is applied to recursively determine an optimal design, and (iii) all the design, prototyping, and experimentation processes are integrated and carried out under computer control. The optimal, incremental change of design is determined by using a sensitivity Jacobian. The sensitivity Jacobian is initially obtained numerically using a finite element model. Further, the sensitivity Jacobian is corrected and updated recursively with experimental data after each iteration. A proof-of-concept demonstration system is built and tested for the development of a simple single link robot. The arm structure made of plastic is reinforced recursively by coating it with a photo-acrylate plastic with an optimal thickness distribution so that the frequency response of the structure can be improved toward a desired reference model.