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Displaying 476 - 500 of 599

Dynamic Simulation and Modeling of a Road Vehicle

February 2, 2006
Author(s)
Tsung-Ming Tsai
Automated driving of road vehicles needs to use a simulation environment to develop control programs. A vehicle dynamic simulation program was implemented into a computer system. It contains a vehicle dynamic model that models all essential parts of a

Overview of the First Advanced Technology Evaluations for ASSIST

January 31, 2006
Author(s)
Craig I. Schlenoff, Brian A. Weiss, Michelle P. Steves, Ann M. Virts, Michael O. Shneier, Michael Linegang
ASSIST (Advanced Soldier Sensor Information Systems Technology) is a DARPA-funded effort whose goal is to exploit soldier-worn sensors to augment the soldier s recall and reporting capability to enhance situation understanding. ASSIST is separated into two

USARSim: Providing a Framework for Multi-Robot Performance Evaluation

January 31, 2006
Author(s)
Stephen B. Balakirsky, Christopher J. Scrapper Jr, Stefano Carpin, M L. Lewis
Research efforts in urban search and rescue robotics have grown substantially in recent years. Two important robotic competitions (a robot physical league and a high-level infrastructure simulation league) were established in 2001 under the RoboCup

Recommended Objective Test Procedures for Road Departure Crash Warning Systems

January 6, 2006
Author(s)
Sandor S. Szabo, Richard J. Norcross
Under the auspices of the Department of Transportation Intelligent Vehicle Initiative, the National Highway Traffic and Safety Administration (NHTSA) is evaluating the safety benefits of Road Departure Crash Warning Systems (RDCWS). These systems warn

Temporal Range Registration for Unmanned Ground and Aerial Vehicles

November 30, 2005
Author(s)
Rajmohan (. Madhavan, Tsai H. Hong, Elena R. Messina
An iterative temporal registration algorithm is presented in this article for registering 8 3D range images obtained from unmanned ground and aerial vehicles traversing unstructured 9 environments. We are primarily motivated by the development of 3D

Design and Modeling of Thermally Actuated MEMS Nanopositioners

November 11, 2005
Author(s)
Sebastien Bergna, Jason J. Gorman, Nicholas G. Dagalakis
Several micro-scale nanopositioning mechanisms, or MEMS nanopositioners, have been developed for application in nanotechnology and optical sensors. In this paper, the design and modeling of these devices is presented along with initial experimental results

Knowledge Representation and Decision Making for Mobile Robots

July 13, 2005
Author(s)
Elena R. Messina, Stephen B. Balakirsky
Knowledge is central to a mobile robot's ability to carry out its missions and adapt to changes in the environment it is traversing. The knowledge subsystem must support acquisition of information from external sources, maintain prior knowledge, infer new

SysML and UML 2 Support for Activity Modeling

June 1, 2005
Author(s)
Conrad E. Bock
This article describes activity modeling as specified by the Systems Modeling Language (SysML) and the finalization of the Unified Modeling Language version 2 (UML 2). It reviews and updates an earlier proposed alignment between Enhanced Functional Flow

HiCASS Target Tracking Sensor Study

May 20, 2005
Author(s)
Richard J. Norcross
The High Capacity Alongside Sea base Sustainment (HiCASS) program intends to generate substantial improvements in skin-to-skin at-sea replenishment. HiCASS requires real-time tracking and dynamic load position sensing.

Hierarchical Control and Performance Evaluation of Multi-Vehicle Autonomous Systems

May 4, 2005
Author(s)
Stephen B. Balakirsky, Christopher J. Scrapper Jr, Elena R. Messina
This paper will describe how the Mobility Open Architecture Tools and Simulation (MOAST) framework can facilitate performance evaluations of RCS compliant multi-vehicle autonomous systems. This framework provides an environment that allows for simulated

Systems Engineering in the Product Lifecycle

May 1, 2005
Author(s)
Conrad E. Bock
This article introduces basic elements of systems engineering that are useful in managing the product lifecycle, as expressed in an extension to the Unified Modeling Language. Models are described for product requirements in textual and computable form

A Model Driven Standards Process

April 1, 2005
Author(s)
Arthur Griesser
Explains how and why UML models fit into a robust formal standardization process based on the best practices of software development.

Design Optimization for a Parallel MEMS Mechanism with Flexure Joints

October 4, 2004
Author(s)
Byoung H. Kang, J Wen, Nicholas Dagalakis, Jason J. Gorman
This paper presents an analysis tool and design method forMEMS parallel mechanisms. Due to processing constraints inMEMS fabrication, flexure joints are frequently used in MEMSmechanisms. Flexure joints offer advantages over other joint designdue to their

NIST's Logistics Integration Solutions

September 1, 2004
Author(s)
Sharon J. Kemmerer
The NIST Manufacturing Interoperability Program staff has years of experience developing standards, validating solutions, and providing interoperability results in the field of manufacturing. Building on this experience, NIST can: (1) Work with industry to

Analysis and Design of Parallel Mechanisms with Flexure Joints

July 15, 2004
Author(s)
Byoung H. Kang, J Wen, Nicholas Dagalakis, Jason J. Gorman
Flexure joints are frequently used in precision motion stages and micro-robotic mechanisms due lo their monolithic construction. The joint compliance, howeyer, can affect the static and dynamic performance of the overall mechanism. In this paper, we

From Databooks to Online Dictionaries and Parts Catalogues

January 5, 2004
Author(s)
John V. Messina, James A. St Pierre
This power point presentation was presented at the 4th Annual ECCMA Membership Conference at Lehigh University on October 22nd, 2003 during a panel presentation on competitive sourcing, parts interoperability, and inventory visibility in public sector

Smart Machining Research at the National Institute of Standards and Technology

September 23, 2003
Author(s)
Kevin K. Jurrens, Johannes A. Soons, Robert W. Ivester
This paper presents an overview of collaborative research activities conducted by staff of the Manufacturing Engineering Laboratory at the National Institute of Standards and Technology to address the enabling metrology and standards infrastructure needed
Displaying 476 - 500 of 599