1-20 of 65
Nejat Olgac
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Discrete Domain Analysis of Delayed Resonator

Hakan Elmali, Nejat Olgac
Proc. ASME. IMECE96, Active Control of Vibration and Noise, 347-354, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0939
https://doi.org/10.1115/IMECE1996-0939
View Paper titled, Discrete Domain Analysis of Delayed Resonator
Open the PDF for Discrete Domain Analysis of Delayed Resonator in another window
Topics: Absorption, Control equipment, Design, Resonance, Simulation results, Stability, State feedback, Vibration, Vibration absorbers, Vibration suppression
Proceedings Papers

Implementation of DR and DFFDR Techniques on Distributed Systems

Nejat Olgac, Hakan Elmali, Martin Hosek, Mark Renzulli
Proc. ASME. IMECE96, Active Control of Vibration and Noise, 83-90, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0908
https://doi.org/10.1115/IMECE1996-0908
View Paper titled, Implementation of DR and DFFDR Techniques on Distributed Systems
Open the PDF for Implementation of DR and DFFDR Techniques on Distributed Systems in another window
Topics: Absorption, Excitation, Feedback, Filters, Oscillations, Piezoelectric actuators, Resonance, Steel, Vibration
Journal Articles

A Robust Delayed Resonator Construction Using Amplifying Mechanism

Yifan Liu, Jiazhi Cai, Nejat Olgac, Qingbin Gao
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. February 2023, 145(1): 011010.
Paper No: VIB-22-1177
https://doi.org/10.1115/1.4055559
Published Online: September 30, 2022
View Article titled, A Robust Delayed Resonator Construction Using Amplifying Mechanism
Open the PDF for A Robust Delayed Resonator Construction Using Amplifying Mechanism in another window
Topics: Construction, Delays, Dynamics (Mechanics), Excitation, Resonance, Robustness, Stability, Transients (Dynamics), Vibration, Vibration suppression
Proceedings Papers

Delayed Resonance Yields a New Perspective on Regenerative Machine Tool Chatter

Nejat Olgac, Martin Hosek
Proc. ASME. IMECE97, Manufacturing Science and Engineering: Volume 2, 395-402, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-1177
https://doi.org/10.1115/IMECE1997-1177
View Paper titled, Delayed Resonance Yields a New Perspective on Regenerative Machine Tool Chatter
Open the PDF for Delayed Resonance Yields a New Perspective on Regenerative Machine Tool Chatter in another window
Topics: Chatter, Machine tools, Resonance, Cutting, Absorption, Delays, Dynamics (Mechanics), Oscillations, Vibration, Vibration suppression
Proceedings Papers

Experimental Comparison of Delayed Resonator and PD Controlled Vibration Absorbers Using Electromagnetic Actuators

Hakan Elmali, Mark Renzulli, Nejat Olgac
Proc. ASME. IMECE98, Vibration and Noise Control, 201-207, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0421
https://doi.org/10.1115/IMECE1998-0421
View Paper titled, Experimental Comparison of Delayed Resonator and PD Controlled Vibration Absorbers Using Electromagnetic Actuators
Open the PDF for Experimental Comparison of Delayed Resonator and PD Controlled Vibration Absorbers Using Electromagnetic Actuators in another window
Topics: Electromagnetic actuators, Vibration absorbers, Absorption, Feedback, Vibration, Actuators, Dynamics (Mechanics), Resonance
Proceedings Papers

Stability Analysis of Multiple Delayed Resonator Vibration Absorbers

Nader Jalili, Nejat Olgac
Proc. ASME. IMECE98, Dynamics, Acoustics and Simulations, 211-217, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0569
https://doi.org/10.1115/IMECE1998-0569
View Paper titled, Stability Analysis of Multiple Delayed Resonator Vibration Absorbers
Open the PDF for Stability Analysis of Multiple Delayed Resonator Vibration Absorbers in another window
Topics: Stability, Vibration absorbers, Delays, Vibration, Dampers, Feedback, Mechanical structures, Springs
Proceedings Papers

A Single-Step Automatic Tuning Algorithm for the Delayed Resonator Vibration Absorber

Martin Hosek, Nejat Olgac
Proc. ASME. IMECE99, Dynamic Systems and Control, 157-164, November 14–19, 1999
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1999-0021
https://doi.org/10.1115/IMECE1999-0021
View Paper titled, A Single-Step Automatic Tuning Algorithm for the Delayed Resonator Vibration Absorber
Open the PDF for A Single-Step Automatic Tuning Algorithm for the Delayed Resonator Vibration Absorber in another window
Topics: Algorithms, Vibration absorbers, Robustness, Dampers, Delays, Fluctuations (Physics), Mechanical properties, Springs, State feedback, Uncertainty
Proceedings Papers

The Influence Region Analysis for the Delayed Resonator Vibration Absorber

Giulio Grillo, Nejat Olgac
Proc. ASME. IMECE2001, Dynamic Systems and Control, 399-405, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/DSC-24550
https://doi.org/10.1115/IMECE2001/DSC-24550
View Paper titled, The Influence Region Analysis for the Delayed Resonator Vibration Absorber
Open the PDF for The Influence Region Analysis for the Delayed Resonator Vibration Absorber in another window
Topics: Stability, Vibration absorbers
Proceedings Papers

Relative Stability Analysis for Vibration Absorbers With Multiple Delayed Feedback

Chang Huang, Nejat Olgac
Proc. ASME. IMECE2000, Control of Vibration and Noise: New Millennium, 173-178, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-1779
https://doi.org/10.1115/IMECE2000-1779
View Paper titled, Relative Stability Analysis for Vibration Absorbers With Multiple Delayed Feedback
Open the PDF for Relative Stability Analysis for Vibration Absorbers With Multiple Delayed Feedback in another window
Topics: Feedback, Stability, Vibration absorbers, Delays, Excitation, Absorption, Engineering simulation, Performance, Simulation, State feedback
Proceedings Papers

Active Vibration Absorption Using Delayed Resonator With Relative Position Measurement

Nejat Olgac, Martin Hosek
Proc. ASME. DETC95, Volume 3C: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration Control, Analysis, and Identification, 59-65, September 17–20, 1995
Publisher: American Society of Mechanical Engineers
Paper No: DETC1995-0560
https://doi.org/10.1115/DETC1995-0560
View Paper titled, Active Vibration Absorption Using Delayed Resonator With Relative Position Measurement
Open the PDF for Active Vibration Absorption Using Delayed Resonator With Relative Position Measurement in another window
Topics: Absorption, Vibration, Feedback, Control algorithms, Dampers, Delays, Displacement measurement, Excitation, Oscillations, Springs
Proceedings Papers

Centrifugal Delayed Resonator: Theory and Experiments

Martin Hosek, Hakan Elmali, Nejat Olgac
Proc. ASME. DETC97, Volume 1B: 16th Biennial Conference on Mechanical Vibration and Noise, V01BT08A006, September 14–17, 1997
Publisher: American Society of Mechanical Engineers
Paper No: DETC97/VIB-3829
https://doi.org/10.1115/DETC97/VIB-3829
View Paper titled, Centrifugal Delayed Resonator: Theory and Experiments
Open the PDF for Centrifugal Delayed Resonator: Theory and Experiments in another window
Topics: Absorption, Control algorithms, Delays, Dynamics (Mechanics), Failure, Feedback, Mechanical properties, Mechanical structures, Oscillations, Pendulums
Proceedings Papers

Robust Tracking for Uncertain Flexible Structures Using Mixed Time-Optimal and Sliding Mode Control

Nader Jalili, Nejat Olgac
Proc. ASME. DETC97, Volume 1C: 16th Biennial Conference on Mechanical Vibration and Noise, V01CT11A005, September 14–17, 1997
Publisher: American Society of Mechanical Engineers
Paper No: DETC97/VIB-3777
https://doi.org/10.1115/DETC97/VIB-3777
View Paper titled, Robust Tracking for Uncertain Flexible Structures Using Mixed Time-Optimal and Sliding Mode Control
Open the PDF for Robust Tracking for Uncertain Flexible Structures Using Mixed Time-Optimal and Sliding Mode Control in another window
Topics: Flexible structures, Sliding mode control, Uncertainty
Proceedings Papers

Delay Scheduling of a LQR and PID Controlled Pendubot Using CTCR Method

Helio S. Esteban Villegas, Carlos Borrás Pinilla, Nejat Olgac
Proc. ASME. IMECE2020, Volume 7A: Dynamics, Vibration, and Control, V07AT07A004, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-24273
https://doi.org/10.1115/IMECE2020-24273
View Paper titled, Delay Scheduling of a LQR and PID Controlled Pendubot Using CTCR Method
Open the PDF for Delay Scheduling of a LQR and PID Controlled Pendubot Using CTCR Method in another window
Topics: Delays
Proceedings Papers

A Novel Technique for the Stability of Multiple Frequency Resonators

Nejat Olgac
Proc. ASME. DETC99, Volume 7B: 17th Biennial Conference on Mechanical Vibration and Noise, 2469-2473, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8023
https://doi.org/10.1115/DETC99/VIB-8023
View Paper titled, A Novel Technique for the Stability of Multiple Frequency Resonators
Open the PDF for A Novel Technique for the Stability of Multiple Frequency Resonators in another window
Topics: Stability, Delays, Feedback
Journal Articles

Real-Time Tuning of Delayed Resonator-Based Absorbers for Spectral and Spatial Variations

Ryan Jenkins, Nejat Olgac
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. April 2019, 141(2): 021011.
Paper No: VIB-18-1085
https://doi.org/10.1115/1.4041592
Published Online: November 14, 2018
View Article titled, Real-Time Tuning of Delayed Resonator-Based Absorbers for Spectral and Spatial Variations
Open the PDF for Real-Time Tuning of Delayed Resonator-Based Absorbers for Spectral and Spatial Variations in another window
Topics: Absorption, Design, Excitation, Resonance, Stability, Vibration, Delays, Vibration absorbers, Dynamics (Mechanics), Theorems (Mathematics)
Proceedings Papers

Double Imaginary Root Degeneracies in Time-Delayed Systems and CTCR Treatment

Ryan R. Jenkins, Nejat Olgac
Proc. ASME. DSCC2017, Volume 2: Mechatronics; Estimation and Identification; Uncertain Systems and Robustness; Path Planning and Motion Control; Tracking Control Systems; Multi-Agent and Networked Systems; Manufacturing; Intelligent Transportation and Vehicles; Sensors and Actuators; Diagnostics and Detection; Unmanned, Ground and Surface Robotics; Motion and Vibration Control Applications, V002T05A001, October 11–13, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2017-5013
https://doi.org/10.1115/DSCC2017-5013
View Paper titled, Double Imaginary Root Degeneracies in Time-Delayed Systems and CTCR Treatment
Open the PDF for Double Imaginary Root Degeneracies in Time-Delayed Systems and CTCR Treatment in another window
Topics: Time delay systems, Delays, Dynamics (Mechanics), Stability, Temperature programmed desorption, Variational techniques
Journal Articles

Analytical and Experimental Study on Passive Stabilization of Thermoacoustic Dynamics in a Rijke Tube

Umut Zalluhoglu, Nejat Olgac
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. February 2018, 140(2): 021007.
Paper No: DS-17-1109
https://doi.org/10.1115/1.4037388
Published Online: September 20, 2017
View Article titled, Analytical and Experimental Study on Passive Stabilization of Thermoacoustic Dynamics in a Rijke Tube
Open the PDF for Analytical and Experimental Study on Passive Stabilization of Thermoacoustic Dynamics in a Rijke Tube in another window
Topics: Dynamics (Mechanics), Stability, Pressure
Proceedings Papers

Stability and Control of a Thermoacoustic Device: The Rijke’s Tube

Nejat Olgac, Umut Zalluhoglu, Ayhan S. Kammer
Proc. ASME. DSCC2014, Volume 2: Dynamic Modeling and Diagnostics in Biomedical Systems; Dynamics and Control of Wind Energy Systems; Vehicle Energy Management Optimization; Energy Storage, Optimization; Transportation and Grid Applications; Estimation and Identification Methods, Tracking, Detection, Alternative Propulsion Systems; Ground and Space Vehicle Dynamics; Intelligent Transportation Systems and Control; Energy Harvesting; Modeling and Control for Thermo-Fluid Applications, IC Engines, Manufacturing, V002T33A001, October 22–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2014-5888
https://doi.org/10.1115/DSCC2014-5888
View Paper titled, Stability and Control of a Thermoacoustic Device: The Rijke’s Tube
Open the PDF for Stability and Control of a Thermoacoustic Device: The Rijke’s Tube in another window
Topics: Stability, Thermoacoustic devices, Combustion, Temperature programmed desorption, Physics, Time delay systems
Proceedings Papers

Stability of Blade-Casing Interference in Turbomachinery and the Design Alternatives on Damping Characteristics

Nejat Olgac, Umut Zalluhoglu, Ayhan S. Kammer
Proc. ASME. DSCC2014, Volume 3: Industrial Applications; Modeling for Oil and Gas, Control and Validation, Estimation, and Control of Automotive Systems; Multi-Agent and Networked Systems; Control System Design; Physical Human-Robot Interaction; Rehabilitation Robotics; Sensing and Actuation for Control; Biomedical Systems; Time Delay Systems and Stability; Unmanned Ground and Surface Robotics; Vehicle Motion Controls; Vibration Analysis and Isolation; Vibration and Control for Energy Harvesting; Wind Energy, V003T50A002, October 22–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2014-6124
https://doi.org/10.1115/DSCC2014-6124
View Paper titled, Stability of Blade-Casing Interference in Turbomachinery and the Design Alternatives on Damping Characteristics
Open the PDF for Stability of Blade-Casing Interference in Turbomachinery and the Design Alternatives on Damping Characteristics in another window
Topics: Blades, Damping, Design, Stability, Turbomachinery, Chatter, Dynamics (Mechanics), Machining, Vibration, Clearances (Engineering)
Journal Articles

Investigation of Local Stability Transitions in the Spectral Delay Space and Delay Space

Qingbin Gao, Umut Zalluhoglu, Nejat Olgac
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. September 2014, 136(5): 051011.
Paper No: DS-13-1425
https://doi.org/10.1115/1.4027171
Published Online: June 12, 2014
View Article titled, Investigation of Local Stability Transitions in the Spectral Delay Space and Delay Space
Open the PDF for Investigation of Local Stability Transitions in the Spectral Delay Space and Delay Space in another window
Topics: Delays, Stability