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Displaying 1 - 25 of 94

Design and Testing of Wireless Motion Gauges for Two Collaborative Robot Arms

March 11, 2022
Author(s)
Yong Sik Kim, Nicholas G. Dagalakis, Jeremy Marvel, Geraldine Cheok
Most existing robot performance evaluation methods focus on single robotic arms performing independent motion tasks. In this paper, a motion gauge is proposed to evaluate the symmetrical coordinated-motion performance between two robotic arms. For this

Optical Fiber Fabry-Perot Micro-Displacement Sensor for MEMS In-plane Motion Stage

February 28, 2018
Author(s)
Yong Sik Kim, Nicholas Dagalakis, Young-Man Choi
Fabry-Perot interferometer sensors have been widely used in Micro-Electro-Mechanical-Systems (MEMS) due to high displacement accuracy and immunity to electromagnetic noises, but they are still limited by micro scale measurement range. In this paper, a

Capacitive Displacement Sensor for Detecting Planar Submicrometer Motion

June 1, 2016
Author(s)
Svetlana Avramov-Zamurovic1, Jae M. Yoo, Nicholas Dagalakis
This paper describes the design of a very simple displacement sensor that measures the displacement of an object by measuring the change in capacitance due to the movement of this object in the sensor fringing electric field. Two sensor geometries with

Testing of Cementitious Materials Using a Dynamic MEMS Micro Rheometer

May 17, 2016
Author(s)
Yong Sik Kim, Nicholas G. Dagalakis, Chiara C. Ferraris, Nicos Martys
Incompatibility of cementitious materials with admixtures often requires time consuming testing. Usually, several mixtures need to be prepared either using concrete or paste to determine the optimum high range water reducer dosage (HRWRA) and type. The

Design of a 1 DOF MEMS motion stage for a parallel plane geometry rheometer

December 31, 2015
Author(s)
Yong Sik Kim, Nicholas Dagalakis, Chiara C. Ferraris, Svetlana Avramov-Zamurovic1
Rotational rheometers are used to measure paste properties, but the test would take too long to be useful for a quality control (QC) on the job site. In this paper, a new type of rheometer is proposed based on a one degree of freedom (DOF) micro-electro

A 3D PRINTING FLEXURE PRESSURE SENSOR FOR ROBOT IMPACT SAFETY TESTING

October 9, 2015
Author(s)
Hongliang Shi, Yong Sik Kim, Nicholas G. Dagalakis, Duan Xuechao
This paper presents a flexure pressure sensor fabricated by means of 3D printing. This sensor combined with a biosimulant artifact from National Institute of Standards and Technology (NIST) is used to measure the severity of injuries caused in the case of

Design of MEMS vision tracking system based on a micro fiducial marker

August 31, 2015
Author(s)
Yong Sik Kim, Yang Seung Ho, KwangWoong Yang, Nicholas Dagalakis
In this study, a MEMS-based vision tracking system is developed based on micro fiducial markers. The vision tracking system recognizes the predetermined patterns of the micro-scale fiducial markers and calculates the position and rotation of the MEMS

A Stiffness Model for Control and Analysis of a MEMS Hexapod Nanopositioner

July 9, 2014
Author(s)
Hongliang Shi, Hai-Jun Su, Nicholas Dagalakis
This paper presents a stiffness based kinematic model for analysis and control of a MEMS flexure-based hexapod nanopositioner that was previously built by the National Institute of Standards and Technology (NIST). This nanopositioner is capable of

Design of MEMS based three-axis motion stage by incorporating a nested structure

June 5, 2014
Author(s)
Yong Sik Kim, Nicholas G. Dagalakis, Satyandra K. Gupta
A new design of three degrees-of-freedom (DOFs) translational motion stage (XYZ-stage) is presented in this paper. This XYZ-stage is based on Micro-electro-mechanical systems (MEMS) and designed by combining three existing 1-DOF motion stages through a

Microelectromechanical systems based Stewart platform with sub-nano resolution

December 3, 2012
Author(s)
Seung Ho Yang, Yong Sik Kim, Jae M. Yoo, Nicholas G. Dagalakis
Currently difficulties exist in the fabrication of microelectromechanical systems (MEMS) in the form of Stewart platforms. The macroscale positioning technology, such as universal joints, ball and roller bearings and commercial actuators, used for building

Automated Multiprobe Microassembly using Vision Feedback

October 5, 2012
Author(s)
John D. Wason, John T. Wen, Jason J. Gorman, Nicholas Dagalakis
This paper describes the algorithm development and experimental results of a vision-guided multi-probe microassembly system. The key focus is to develop the capabilities required for the construction of three dimensional (3D) structures using only planar

A high-bandwidth electromagnetic MEMS motion stage for scanning applications

August 23, 2012
Author(s)
Young M. Choi, Nicholas G. Dagalakis, Jason J. Gorman, Seung Ho Yang, Yong Sik Kim, Jae M. Yoo
This paper presents the design, fabrication and experimental results of an out-of-plane electromagnetic motion stage. The combination of electromagnetic actuation and a flexure-supported platform enables bidirectional motion with high precision as well as

Kinematic Modeling and Calibration of a Flexure Based Hexapod Nanopositioner

August 21, 2012
Author(s)
Hongliang Shi, Hai-Jun Su, Nicholas Dagalakis, John A. Kramar
This paper covers the kinematic modeling of a flexure-based, hexapod nanopositioner and a new method of calibration for this type of nanopositioner. This six degrees of freedom tri-stage nanopositioner can generate small displacement, high-resolution

Design and Fabrication of a Three-DoF MEMS Stage Based on Nested Structures

August 15, 2012
Author(s)
Yong Sik Kim, Nicholas G. Dagalakis, Satyandra K. Gupta
This paper presents the design, fabrication and testing of a Micro Electro Mechanical Systems (MEMS) based positioning stage which is capable of generating translational motions along X, Y and Z axes, respectively. For this purpose, two existing 1 Degree

Displacement Sensor for Detecting Sub-micrometer Motion

July 6, 2012
Author(s)
Svetlana Avramov-Zamurovic1, Jae M. Yoo, Nicholas Dagalakis, Rae Duk Lee
This paper describes the design of a nano displacement sensor that detects the presence of a moving platform by using fringing electric field. Its electrodes are commercially prefabricated Teflon insulated wires. This solution provides for excellent