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Search Publications by: Elena Messina (Assoc)

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Displaying 251 - 275 of 298

Open System Architecture for Real-time Control Using an UML Based Approach

May 1, 2001
Author(s)
Hui-Min Huang, Elena R. Messina, Harry A. Scott, James S. Albus, Frederick M. Proctor, William P. Shackleford
We describe a generic architecture that is applicable to the engineering of many real-time control problems. We further describe how UML is used to apply the architecture to the problems.

Report of the NIST MEL Architecture Task Force

December 29, 2000
Author(s)
Harry A. Scott, John Evans, Steven R. Ray, E C. Teague, James S. Albus, Herbert T. Bandy, Edward J. Barkmeyer Jr., Neil Christopher, M A. Donmez, Hui-Min Huang, Albert W. Jones, Elena R. Messina, Jim G. Nell, Frederick M. Proctor, Evan K. Wallace
The NIST Manufacturing Engineering Laboratory undertook a series of internal working meetings to examine all of its architecture efforts. A survey of work was performed, and recommendations were identified. This document, initially compiled in 1999

A Standard Test Course for Urban Search and Rescue Robots

August 1, 2000
Author(s)
Adam S. Jacoff, Elena R. Messina, John Evans
One approach to measuring the performance of intelligent systems is to develop standardized or reproducible tests. These tests may be in a simulated environment or in a physical test course. The National Institute of Standards and Technology is developing

Performance Metrics for Intelligent Systems

August 1, 2000
Author(s)
John Evans, Elena R. Messina
Research into intelligent systems and intelligent control is burgeoning. However, there is no consensus on how to define or measure an intelligent system. This lack of rigor hinders the ability to measure progress in the field and to compare different

The NIST RS274NGC Interpreter - Version 3

August 1, 2000
Author(s)
Thomas R. Kramer, Frederick M. Proctor, Elena R. Messina
This report describes an interpreter which reads numerical control code and produces calls to a set of canonical machining functions. The interpreteris a software system written in the C++ programming language. The output of the interpreter may be used to

The Challenge of Intelligent Systems

July 19, 2000
Author(s)
A Meystel, Elena R. Messina
This paper analyzes the meaning of intelligence within the domain of intelligent control. Because of historical reasons, there are varying and diverse definitions of what constitutes an intelligent control system. Due to the multidisciplinary nature of

An Open Architecture Inspection System

July 1, 2000
Author(s)
Elena R. Messina, Hui-Min Huang, Harry A. Scott
The benefits of open architectures are not currently available for most manufacturing equipment. We describe a testbed for experimenting with an open architecture controller for an inspection system. An initial taxonomy of categories of openness is

An Architecture and Tool for Large-scale System Control with a manufacturing system application

June 1, 2000
Author(s)
Hui-Min Huang, James S. Albus, William P. Shackleford, Harry A. Scott, Thomas R. Kramer, Elena R. Messina, Frederick M. Proctor
This paper describes a reference architecture that is applicable to multiple classes of large-scale, complex real-time control systems. An associated tool, Generic Shell, is also described. Generic Shell employs a set of code templates that facilitate

An Automated Hierarchical Process Planning System

April 28, 2000
Author(s)
Thomas R. Kramer, Hui-Min Huang, Elena R. Messina, Frederick M. Proctor, Harry A. Scott
This paper describes an automated hierarchical process planning system for machining and inspecting discrete parts in an RCS type control system. The system integrates planning with control of a 3-axis machining center and a coordinate measuring machine

A Knowledge-Based Inspection Workstation

November 3, 1999
Author(s)
Elena R. Messina, John A. Horst, Thomas R. Kramer, Hui-Min Huang, Tsung-Ming Tsai, E Amatucci
We are building an inspection workstation development environment to use as a testbed for understanding what types of knowledge, e.g., data, algorithms, and processes, can increase the productivity of inspection operations. Inspection can be more efficient