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Displaying 51 - 75 of 94

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

Performance Analysis of Next-Generation LADAR for Manufacturing, Construction, and Mobility

May 6, 2004
Author(s)
William C. Stone, Maris Juberts, Nicholas Dagalakis, Jack A. Stone Jr., Jason J. Gorman
The NIST Construction Metrology and Automation Group (CMAG), in cooperation with the NIST Intelligent Systems Division (ISD), is developing performance metrics and researching issues related to the design and development of a Next-Generation LADAR (laser

Analysis and Design of Parallel Mechanisms With Flexure Joints

April 30, 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 to their monolithic construction. The joint compliance, however, can affect the static and dynamic performance of the overall mechanism.In this paper, we

Comparison of Macro-Tip/Tilt and Mesoscale Position Beam-Steering Transducers for Free-Space Optical Communications Using a Quadrant Photodiode Sensor

January 1, 2004
Author(s)
K B. Fielhauer, B G. Boone, J R. Bruzzi, Jeffery Kluga, J R. Connelly, M M. Bierbaum, Jason J. Gorman, Nicholas Dagalakis
The National Aeronautics and Space Administration (NASA) plans to develop optical communication terminals for future spacecraft, especially in support of high data rate science missions and manned exploration of Mars. Future, very long-range missions, such

Multiloop Control of a Nanopositioning Mechanism for Ultraprecision Beam Steering

January 1, 2004
Author(s)
Jason J. Gorman, Nicholas Dagalakis, B G. Boone
Beam steering accuracy is critical to the successful operation of optical communications systems, especially those which take place over extreme length scales, such as for an interstellar spacecraft. In this paper, a novel beam steering mechanism and

Force Control of Linear Motor Stages for Microassembly

November 21, 2003
Author(s)
Jason J. Gorman, Nicholas Dagalakis
The microassembly of microelectromechanical systems from various micro-components requires the development of many new robotic capabilities. One of these capabilities is force control for handling micro-scale components with force control resolution on the

Comparison of Macro-Tip/Tilt & Meso-Scale Position Beam-Steering Transducers for Free-Space Optical Communications Using a Quadrant Photodiode Sensor

August 6, 2003
Author(s)
Jason J. Gorman, Nicholas Dagalakis, K B. Fielhauer, B G. Boone, J R. Bruzzi, Jeffery Kluga
The National Aeronautics and Space Administration (NASA) plans to develop optical communication terminals for future spacecraft, especially in support of high data rate science missions and manned exploration of Mars. Future, very long-range missions, such

Micro-Mirror Array Control of Optical Tweezer Trapping Beams

August 28, 2002
Author(s)
Nicholas Dagalakis, Thomas W. LeBrun, J Lippiatt
The efficiency of optical tweezer manufacturing depends on the number of trapping beams available. Micro optics technology offers the opportunity to significantly increase the number of trapping beams without a significant increase of the cost or size of

4D/RCS Version 2.0: A Reference Model Architecture for Unmanned Vehicle Systems

August 22, 2002
Author(s)
James S. Albus, Hui-Min Huang, Elena R. Messina, Karl Murphy, Maris Juberts, Alberto Lacaze, Stephen B. Balakirsky, Michael O. Shneier, Tsai H. Hong, Harry A. Scott, Frederick M. Proctor, William P. Shackleford, John L. Michaloski, Albert J. Wavering, Thomas Kramer, Nicholas Dagalakis, William G. Rippey, Keith A. Stouffer, Steven Legowik
The 4D/RCS architecture provides a reference model for military unmanned vehicles on how their software components should be identified, organized, and interacting such that missions, especially those involving unknown or hostile environments, can be

Parallel Cantilever Biaxial Micro-Positioner

April 12, 2002
Author(s)
E Amatucci, Nicholas Dagalakis
The Parallel Cantilever Biaxial Micro-Positioner (PCBMP) has a novel configuration and design in that it has two parallel sets of cantilever beam flexures. This design reduces crosstalk in the X and Y translations and creates motions that are more linear

6-Degree of Freedom Tri-Stage Micro Positioner

April 1, 2002
Author(s)
Nicholas G. Dagalakis, E Amatucci
The 6-Degree of Freedom Tri-Stage Micro Positioner (6DFTSMP) can generate high accuracy, small displacement, and high-resolution motions. The moving platform of the device has six degrees (6-D) of freedom motions (translation and rotation about three

Kinematic Modeling of a 6-Degree of Freedom Tri Stage Micro-Positioner

November 1, 2001
Author(s)
Nicholas G. Dagalakis, E Amatucci
The 6-Degree of Freedom Tri Stage Micro Positioner (6DFTSMP) can generate high accuracy, small displacement, and high-resolution motions. The moving platform of the device has six degrees (6-D) of freedom motions (translation and rotation about three

Calibration of an Optical Sensor

March 9, 2001
Author(s)
J H. Daruwalla, Nicholas Dagalakis
An inexpensive optical reflective sensor was evaluated for possible use as a precision proximity sensor. The output signal of the sensor was measured as a function of the distance of a flat reflecting surface from the front glass window of the sensor. The

Kinematic Modeling and Analysis of a Planar Micro-Positioner

January 1, 2001
Author(s)
Nicholas G. Dagalakis, John A. Kramar, E Amatucci, Robert Bunch
The static and dynamic performance of a control system depends on the accuracy of the mathematical model of the plant that is being controlled. In this work, the accuracies of a linear and a second-order kinematic model were evaluated for a two-dimensional

An Overview of Nano-Micro-Meso Scale Manufacturing at the NIST

March 13, 2000
Author(s)
E Amatucci, Nicholas Dagalakis, Bradley N. Damazo, Matthew A. Davies, John Evans, Jun-Feng Song, E C. Teague, Theodore V. Vorburger
The future of nano-, micro- and meso-scale manufacturing operations will be strongly influenced by a new breed of assembly and manufacturing tools that will be intelligent, flexible, more precise, include in-process production technologies and make use of

An Overview of Nano-Micro-Meso Scale Manufacturing at NIST

January 1, 2000
Author(s)
E C. Teague, Jun-Feng Song, Bradley N. Damazo, John Evans, Matthew A. Davies, Nicholas G. Dagalakis
The Manufacturing Engineering Laboratory (MEL) has a unique mission of discrete part manufacturing technology within the National Institute of Standards and Technology''s (NIST) mission of measurement, standards, data and infrastructure technology. Several

Performance Evaluation of a Parallel Cantilever Biaxial Micropositioning Stage

January 1, 2000
Author(s)
E Amatucci, Nicholas Dagalakis, John A. Kramar, Fredric Scire
The phenomenal growth of opto-electronic manufacturing and future applications in micro and nano manufacturing has raised the need for low-cost high performance micro-positioners. The National Institutes of Standards and Technology (NIST) Advanced

Industrial Robotics Standards

January 1, 1998
Author(s)
Nicholas G. Dagalakis
A brief description of the industrial robots related standards activities at the national and international level is presented. The robot performance and safety standards are discussed in greater detail. A thorough list of national and international