Journal Publications

34) Delice, I.I., Sipahi, R., April 2012, Strong Delay-Independent Stability Test for Systems with Multiple Time Delays, in print, full article, IEEE Transactions on Automatic Control.

33) Sipahi, R., Delice, I.I., On Some Features of Potential Stability Switching Hypersurfaces of Time-Delay Systems, invited article, Special Issue on Time Delay Systems, in print, IMA Journal of Mathematical Control and Information.

32) Sipahi, R., Olgac, N., Stability Intricacies of Two-Delay Linear Systems in the Presence of a Delay Cross-Talk, in print, IET Control Theory & Applications.

31) Sipahi, R., Qiao, W., 2011, Responsible Eigenvalue Concept for the Stability of a Class of Single-Delay Consensus Dynamics with Fixed Topology, IET Control Theory & Applications, 5(4), pp. 622-629. available on-line

30) Sipahi, R., Niculescu, S.-I., Abdallah, C.T., Michiels, W., Gu, K., 2011, Stability and Stabilization of Systems with Time Delay, Limitations and opportunities, invited article, IEEE Control Systems Magazine, 31(1), pp. 38-65. available on-line - received 1 non-self citation

29) Sipahi, R., Delice, I.I., 2011, Advanced Clustering with Frequency Sweeping Methodology for the Stability Analysis of Multiple Time-Delay Systems, IEEE Transactions on Automatic Control, 56(2), 467-472. available on-line - received 2 non-self citations

28) Sipahi, R., Niculescu, S.-I., 2010, Stability of Car Following with Human Memory Effects and Automatic Headway Compensation, invited article, theme issue Traffic jams - dynamics and control, Theme Editors: Gabor Stepan, Gabor Orosz, Eddie Wilson, Philosophical Transactions of the Royal Society A, 368(1928), 4563-4583. available on-line

27) Sipahi, R., Olgac, N., Breda, D., 2010, A Stability Study on First-Order Neutral Systems with Three Rationally Independent Time Delays, International Journal of Systems Science, 41(12), 1445-1455. available on-line.

26) Marion, T., Sipahi, R., 2010, Early-Stage Firms and Delay-Based Inventory Control Using Decision- Making Tableaux, International Journal of Production Research, 48(18), 5497-5521. available on-line

25) Sipahi, R., Delice, I.I., 2010, Stability of Inventory Dynamics in Supply Chains with Three Delays, International Journal of Production Economics, 123(1), 107-117. available on-line
- received 5 non-self citations

24) Sipahi, R., Fazelinia, H., Olgac, N., 2009, Stability Analysis of LTI Systems with Three Independent Delays – A Computationally Efficient Procedure, ASME J. Dynamic Systems, Measurement and Control, 131, 051013, 1-9. available on-line - received 1 non-self citation

23) Sipahi, R., Delice, I.I., 2009, Extraction of 3D Stability Switching Hypersurfaces of a Time Delay System with Multiple Fixed Delays, Automatica, 45(6), 1449-1454. available on-line
- received 2 non-self citations

22) Sipahi, R., Lammer, S., Niculescu, S.-I., Helbing, D., 2009, On Stability Problems of Supply Networks Constrained with Transport Delay, ASME Journal of Dynamic Systems, Measurement & Control, 131, 021005, 1-9. available on-line - received 1 non-self citation

21) Mikus, O., Olgac, N., Sipahi, R., 2009, An Actively Controlled Harmonic Force Generator, Control Engineering Practice, 17(1), 210-220. available on-line

20) Vyhlidal, T., Olgac, N., Sipahi, R., 2008, A New Perspective in the Stability Assessment of Neutral Systems with Multiple and Cross-talking Delays, SIAM Journal on Control and Optimization, 47(1), 327- 344. available on-line - received 1 non-self citation

19) Sipahi, R., Fazelinia, H., Olgac, N., 2008, Generalization of Cluster Treatment of Characteristic Roots for Robust Stability of Multiple Time-Delayed Systems, International Journal of Robust and Non-linear Control, 18(14), 1430-1449. available on-line

18) Sipahi, R., Atay, F.M., Niculescu, S.-I., 2007, Stability of Traffic Flow Behavior with Distributed Delays Modeling the Memory Effects of the Drivers, SIAM Journal on Applied Mathematics, 68(3), 738-759, available on-line - received 8 non-self citations

17) Olgac, N., Sipahi, R., 2007, Dynamics and Stability of Variable-Pitch Milling, Journal of Vibration and Control, 13(7), 1031-1043. available on-line - received 9 non-self citations

16) Olgac, N., Sipahi, R., Ergenc, A.F., 2007, `Delay Scheduling’, An Unconventional Use of Time Delay as a Stabilizing Tool in Trajectory Tracking, Mechatronics, 17(4-5), 199-206. available on-line
- received 9 non-self citations

15) Fazelinia, H., Sipahi, R., Olgac, N., 2007, Stability Robustness Analysis of Multiple Time-Delayed Systems Using "Building Block" Concept, IEEE Transactions on Automatic Control, 52(5), 799-810. available on-line - received 23 non-self citations

14) Sipahi, R., Olgac, N., 2007, Kernel and Offsrping Concepts for the Stability Robustness of Multiple Time Delayed Systems (MTDS), ASME Journal of Dynamic Systems, Measurement and Control, 129, 245-251. available on-line - received 1 non-self citation

13) Sipahi, R., Olgac, N., 2006, Stability Robustness of Retarded LTI Systems with Single Delay and Exhaustive Determination of their Imaginary Spectra, SIAM Journal on Control and Optimization, 45(5), 1680-1696. available on-line - received 8 non-self citations

12) Sipahi, R., Olgac, N., 2006, Complete Stability Analysis of Neutral-Type First Order Two-Time-Delay Systems with Cross-Talking Delays, SIAM Journal on Control and Optimization, 45(3), 957-971. available on-line- received 2 non-self citations

11) Sipahi, R., Olgac, N., 2006, A Unique Methodology for the Stability Robustness of Multiple Time Delay Systems, Systems & Control Letters, 55(10), 819-825. available on-line - received 15 non-self citations

10) Olgac, N., Sipahi, R., 2006, An Improved Procedure in Detecting the Stability Robustness of Systems with Uncertain Delay, IEEE Transactions on Automatic Control, 51(7), 1164-1165. available on-line - received 13 non-self citations

9) Olgac, N., Ergenc, A.F., Sipahi, R., 2006, "Delay scheduling": A New Concept for Stabilization in Multiple Delay Systems (vol 11, pg 1159, 2005), Journal of Vibration and Control, 12(2), 213-213.

8) Olgac, N., Sipahi, R., 2005, A Unique Methodology for Chatter Stability Mapping in Simultaneous Machining, ASME Journal of Manufacturing Science and Engineering, 127(4), 791-800.
- received 18 non-self citations

7) Olgac, N., Ergenc, A.F., Sipahi, R., 2005, "Delay Scheduling": A New Concept for Stabilization in Multiple Delay Systems, Journal of Vibration and Control, 11(9), 1159-1172.- received 14 non-self citations

6) Sipahi, R., Olgac, N., 2005, Complete Stability Robustness of Third-order LTI Multiple Time-Delay Systems, Automatica, 41(8), 1413-1422.- received 37 non-self citations

5) Olgac, N., Sipahi, R., 2005, The Cluster Treatment of Characteristic Roots and the Neutral Type Time-Delayed Systems, ASME Journal of Dynamic Systems, Measurement and Control, 127(1), 88-97.
- received 13 non-self citations

4) Olgac, N., Sipahi, R., 2004, A Practical Method for Analyzing the Stability of Neutral Type LTI-Time Delayed Systems, Automatica, 40(5), 847-853.- received 19 non-self citations

3) Sipahi, R., Olgac, N., 2003, Active Vibration Suppression with Time Delayed Feedback, ASME J. of Vibration and Acoustics, 125(3), 384-388. - received 13 non-self citations

2) Sipahi, R., Olgac, N., 2003, Degenerate Cases in Using the Direct Method, ASME Journal of Dynamic Systems, Measurement and Control, Special Issue on Time Delayed Systems, 125(2), 194-201.
- received 11 non-self citations

1) Olgac, N., Sipahi, R., 2002, An Exact Method for the Stability Analysis of Time Delayed Linear Time-invariant (LTI) Systems, IEEE Transactions on Automatic Control, 47(5), 793-797.
- received 147 non-self citations

 

Patents / Invention Disclosures

1. "Low Cost Portable Mechatronics Based Braille Writing Device for the Blind", pending. Invention disclosure filed at Technology Transfer Office, Northeastern University.

 

Chapters / Edited Volumes / Books

7) Sipahi, R., Vyhlidal, T., Niculescu, S.-I., Pepe, P. (Eds.), Time Delay Systems - Methods, Applications and New Trends, edited volume, book proposal accepted by the publisher (July 2011), to be published in Lecture Notes in Control and Information Sciences (LNCIS), Springer-Verlag, approximately 470 pages.

6) Olgac, N., Sipahi, R., February 2011, A New Methodology for Chatter Stability Analysis in Simultaneous Machining, Invited chapter, Industrial Electronics Handbook, 2nd edition, CRC Press.

5) Sipahi, R., Niculescu, S.-I., 2010, Deterministic Time-Delayed Traffic Flow Models: A Survey, invited chapter in Complex Time-Delay Systems, Springer-Verlag, Editor: Fatihcan Atay, Max Planck Institute, Leipzig, Germany.

4) Loiseau, J.-J., Niculescu, S.-I., Michiels, W., Sipahi, R. (Eds.), 2009, Topics in Time Delay Systems Analysis, Algorithms, and Control, edited volume, approximately 450 pages, Lecture Notes in Control and Information Sciences, Springer-Verlag.

3) Sipahi R., Delice, I.I., 2009, Inventory Dynamics Models of Supply Chains with Delays; System-Level Connection & Stability, chapter in Topics in Time-Delay Systems: Analysis, Algorithms and Control in Lecture Notes in Control and Information Sciences, Springer-Verlag, Editors: Loiseau, J.-J., Niculescu, S.-I., Michiels, W., Sipahi, R.

2) Sipahi, R. 2008, Stability Analysis of LTI Multiple Time Delay Systems - Cluster Treatment of Characteristic Roots, book, VDM Verlag Dr. Muller, Germany.

1) Sipahi, R., Olgac, N., 2004, Improvements on the Cluster Treatment of Characteristic Roots and the Case Studies, invited chapter in Lecture Notes in Computational Science and Engineering - Advances in Time Delay Systems, 38, Editors: Niculescu, S.-I., Gu, K. Springer-Verlag, Paris.

 

Invited Talks

19) One of the four panelists invited by the MathWorks to the panel entitled Hands-on Experiments and Low Cost Hardware Solutions held at 2011 American Control Conference, San Francisco, CA.

18) Qiao, W., Sipahi, R., Creating Delay-Tolerant Networked Dynamical Systems via Designing the Network Graphs, in invited session “Evolving Dynamical Networks Part II”, presented at SIAM (Society of Industrial and Mathematics Society) Conference on Applications of Dynamical Systems, May 22, 2011, Snowbird, Utah (also listed below under 'non-peer reviewed talks' category).

17) Sipahi, R., Delay-Independent Stability and Delay-Tolerant Network Design, invited talk at Ecole Centrale de Lille. Host: Profs. Jean-Pierre Richard and Laurentiu Hetel (INRIA, CNRS), May 17, 2011.

16) Sipahi, R., Delay-Tolerant Networks, Design, Analysis, Synthesis, invited talk at Max Planck Institute for Mathematics in the Sciences, Leipzig. Host: Dr. Fatihcan Atay, May 13, 2011.

15) Sipahi, R., Delay-Independent Stability and Applications to Supply Chains, invited talk at IRCCYN (CNRS) Ecole Centrale de Nantes. Host: Prof. Jean-Jacques Loiseau, May 12, 2011.

14) Sipahi, R., Delay-Independent Stability and Delay-Tolerant Network Design, invited talk at SUPELEC and INRIA. Host: Profs. Catherine Bonnet and Silviu-Iulian Niculescu, May 10, 2011.

13) Sipahi, R., Stability of Systems with Multiple Delays: Advanced Clustering with Frequency Sweeping Methodology, invited talk at US Air Force Research Labs, New Mexico, 2009.

12) Sipahi, R., Niculescu, S.-I., Delay Effects on Stability of Dynamical Systems, invited talk at the Fifth World Congress of Nonlinear Analysts, Orlando, 2008 (also listed below under 'non-peer reviewed talks' category).

11) Sipahi, R., Niculescu, S.-I., Delice, I.I., Olgac, N., Stability of Time Delay Systems: Connection between Rekasius Substitution and Kronecker Summation, 45 min invited talk at session “Functional Differential Equations: Theory, Methods, Applications” at Fifth World Congress of Nonlinear Analysts, Orlando, 2008 (also listed below under 'non-peer reviewed talks' category).

10) Sipahi, R., Advanced Clustering with Frequency Sweeping, a New Method in Stability Analysis of Multiple Time Delay Systems & Applications to Feedback Control and Operations Research, invited talk at Engineering College, Sabanci University, Istanbul, Turkey, May 2008.

9) Sipahi, R., Fundamental Concepts of Cluster Treatment of Characteristic Roots Methodology, invited talk at University of Arts et Metiers, Paris, April, 2006.

8) Sipahi, R., Destabilization Due to Small Delays In Game Theory, invited talk at University of Arts et Metiers, Paris, April, 2006.

7) Sipahi, R., Future Research Directions on Control and System Design of Time Delayed Dynamics, invited talk at Northeastern University, Department of Mechanical and Industrial Engineering, Boston, MA, March 2006.

6) Sipahi, R., Management of Undesired Effects of Time Delays in Real Life Problems, invited talk at Technische Universitat Dresden, Germany, November 2005.

5) Sipahi, R., Cluster Treatment of Characteristic Roots (CTCR) and Its Application to Chatter Prediction in Simultaneous Machining, invited talk at Koc University, Turkey,2004.

4) Sipahi, R., Cluster Treatment of Characteristic Roots (CTCR) and Its Application to Chatter Prediction in Simultaneous Machining, invited talk at Yeditepe University,Turkey, 2004.

3) Sipahi, R., Cluster Treatment of Characteristic Roots (CTCR) and Its Application to Real Life Problems, invited talk at Istanbul Technical University, Mechanical EngineeringDepartment, Turkey, 2004.

2) Sipahi, R., Cluster Treatment of Characteristic Roots (CTCR) and Its Application to Target and Trajectory Tracking, invited talk Istanbul Technical University, Aeronautical Engineering Department, Turkey, 2004.

1) Sipahi, R., Cluster Treatment of Characteristic Roots (CTCR) and Its Application to Real Life Problems, invited talk at Istanbul Technical University, Mechanical Engineering Department, Turkey, 2004.

 

Peer-Reviewed Conference Publications

51) Qiao, W., Sipahi, R., Responsible-Eigenvalue Control for Creating Autonomy in Coupled Systems with Delays, invited session "Analysis of Complex Networked Dynamical Systems", to be presented at the ASME Dynamic Systems and Control Conference, Arlington, Virginia, October 31 - November 2, 2011.

50) Nia, P.M., Sipahi, R., An Algebraic Approach to Design Observers for Delay-Independent Stability of Single-Delayed Systems, American Control Conference, San Francisco, June 29-July 1, 2011.

49) Qiao, W., Sipahi, R., Responsible Eigenvalue Approach for Stability Analysis of a Single-Delay Large-Scale System with Random Coupling Strengths, ASME Dynamic Systems and Control Conference, Cambridge, MA, September 2010.

48) Qiao, W., Sipahi, R., Dependence of Delay Margin on Network Topology: Single Delay Case, IFAC 9th Workshop on Time Delay Systems, Prague, Czech Republic, June 2010.

47) Delice, I.I., Sipahi, R., Controller Design for Delay-Independent Stability of Multiple Time-Delay Systems via Descartes Rule of Signs, IFAC 9th Workshop on Time Delay Systems, Prague, Czech Republic, June 2010.

46) Delice, I.I., Sipahi, R., Advanced Clustering with Frequency Sweeping (ACFS) Methodology for the Stability Analysis of Multiple Time Delay Systems, American Control Conference, Baltimore, June-July 2010. Mr. Delice received the Best Session Presentation Award.

45) Delice, I.I., Sipahi, R., Exact Upper and Lower Bounds of Crossing Frequency Set and Delay Independent Stability Test for Multiple Time Delayed Systems, IFAC 8th Workshop on Time Delay Systems, Sinaia, Romania, September 2009.

44) Shafai, B., Sadaka, H., Sipahi, R., Robust PI Observer Design for Linear Time-Delay Systems, IEEE Multi-conference on Systems and Control, Saint Petersburg, Russia, July 2009.

43) Shafai, B., Sadaka, H., Sipahi, R., Design of a PI Observer for Disturbance Attenuation and Fault Detection in Linear Time-Delay Systems, invited session on ‘Stability and control of time-delay Systems’, Asian Control Conference, Hong Kong, August 2009.

42) Sipahi, R., Niculescu, S.-I., Delice, I.I., Asymptotic Stability of Constant Time Headway Driving Strategy with Multiple Driver Reaction Delays, American Control Conference, St Louis, June 2009.

41) Forte, J., Sipahi, R., A Novel Device for Nonmagnetic Particle Navigation Using Ferrofluids Manipulated by Magnetic Fields, ASME IMECE, Boston, 2008.

40) Delice, I.I., Sipahi, R., Identifying Stability vs. Instability of Inventory Dynamics of Supply Chains in Presence of Delays, ASME IMECE, Boston, 2008.

39) Sipahi, R., Acar, A., Stability Analysis of Three-Agent Consensus Dynamics with Fixed Topology and Three Non-Identical Delays, ASME Dynamic Systems and Control Conference, Ann Arbor, Michigan, October 2008.

38) Sadaka, H., Shafai, B., Sipahi, R., PI Observer Design for Linear Time-Delay Systems, World Automation Congress, Waikoloa, Hawaii, 2008.

37) Marion, T.J., Sipahi, R., Characterizing Stability of Inventories in Supply Chains with Delays in Early-Stage Firms, IEEE International Engineering Management Conference, Portugal, 2008.

36) Sipahi, R., Niculescu, S.-I., Chain Stability in Traffic Flow with Driver Reaction Delays, American Control Conference (ACC), Seattle, June 2008.

35) Sipahi, R., Delice, I.I, Delay Modeling in Supply Network Dynamics; Performance, Synchronization, Stability, 17th IFAC World Congress, Seoul, Korea, 2008.

34) Sipahi, R., Niculescu, S.-I., Stability Region Approximation of Multiple Time Delayed Dynamics Using Analytical Geometry, Conference on Decision and Control, New Orleans, 2007.

33) Sadaka, H., Shafai, B., Sipahi, R., Chen, J., An Alternative Characterization of Robust Stability and Stability Radius for Linear Time Delay Systems, Conference on Decision and Control, New Orleans, 2007.

32) Sadaka, H., Shafai, B., Sipahi, R., Chen, J., Robust Stability and Stability Radius for Linear Multiple Time Delay Systems, IFAC Time Delay Systems Workshop, Nantes, France, 2007.

31) Sipahi, R., Stability of a Class of Multiple Time Delay Systems with Arbitrary Number of Delays, IFAC Time Delay Systems Workshop, Nantes, France, 2007.

30) Sipahi, R., Niculescu, S.-I., Deterministic Time-Delayed Traffic Flow Models: A Survey, IFAC Time Delay Systems Workshop, Nantes, France, 2007.

29) Sipahi, R., Niculescu, S.-I., Atay, F., Effects of Short-Term Memory of Drivers on Stability Interpretations of Traffic Flow Dynamics, American Control Conference, New York, 2007.

28) Sipahi, R., Olgac, N., Complete Stability Map of First Order - Two Time Delay Systems with Delay Cross-Talk, American Control Conference, New York, 2007.

27) Sipahi, R., Olgac, N., Breda, D., Complete Stability Map of Neutral Type First Order - Two Time Delay Systems, American Control Conference, New York, 2007.

26) Sipahi, R., Arslan, G., Niculescu, S.-I., Characterization of the Stability of Gradient Play Games with Time Delayed Derivative Approximation Actions, Control and Decision Conference (CDC), San Diego, CA, 2006.

25) Sipahi, R., Lammer, S., Niculescu, S.-I., Helbing, D., Bullwhip Effect in Supply Chains under the Presence of Time Delays, ASME-IMECE Conference, Chicago, 2006.

24) Olgac, N., Sipahi, R., Stability in Variable Pitch Milling Regarding Regenerative Chatter, ASME-IMECE Conference, Chicago, 2006.

23) Sipahi, R., S., Niculescu, S.-I., Slow Time-Varying Delay Effects - Robust Stability Characterization of Deterministic Car Following Models, IEEE International Conference on Control Applications, Munich, Germany, 2006.

22) Sipahi, R., Niculescu, S.-I., Analytical Stability Study of a Deterministic Car Following Model under Multiple Delay Interactions, at Invited Session Traffic Dynamics under Presence of Time Delays, IFAC Time Delay Systems Workshop, L’Aquila, Italy, 2006.

21) Olgac, N., Vyhlidal, T., Sipahi, R., Exact Stability Analysis of Neutral Systems with Cross-Talking Delays, IFAC Time Delay Systems Workshop, L’Aquila, Italy, 2006.

20) Sipahi, R., Niculescu, S.-I., Some Remarks on the Characterization of Delay Interactions in Deterministic Car Following Models, MTNS, Kyoto, Japan, 2006.

19) Sipahi, R., Olgac, N.,Stability Map of Systems With Three Independent Delays, American Control Conference, Minneapolis, Minnesota, 2006.

18) Fazelinia, H., Sipahi, R., Olgac, N., Stability Analysis of Multiple Time Delayed Systems Using ’Building Block’ Concept, American Control Conference, Minneapolis, Minnesota, 2006.

17) Sipahi, R., Olgac, N., Breda, D., Complete Stability Map of Neutral Type First Order - Two Time Delay Systems, European Control Conference (ECC)-Conference on Decision and Control (CDC), Seville, Spain, 2005.

16) Olgac, N., Sipahi, R., Chatter Stability Mapping for Simultaneous Machining, ASME IMECE Conference, Orlando, FL, 2005.

15) Sipahi, R., Olgac, N., Kernel and Offsrping Concepts for the Stability Robustness of Multiple Time Delayed Systems (MTDS), ASME Design Engineering Technical Conferences (DETC), Long Beach, CA, 2005.

14) Sipahi, R., Olgac, N., A Comparison of Methods Solving the Imaginary Characteristic Roots of LTI Time Delayed Systems, IFAC World Congress, Prague, Czech Republic, 2005.

13) Olgac, N., Sipahi, R., The Cluster Treatment of Characteristic Roots and the Neutral Type Time-Delayed Systems, ASME IMECE Conference, Anaheim, CA, 2004.

12) Sipahi, R., Olgac, N., Complete Stability Map of Third Order LTI, Multiple Time-Delay Systems, IFAC Time Delays Systems, Leuven, Belgium, 2004.

11) Olgac, N., Sipahi, R., Ergenc, A, `Delay Scheduling’, Use of Time Delay as a Stabilizing Tool in Trajectory Tracking, Experimental Validation, IEEE Mechatronics Conference, METU, Ankara, Turkey, 2004.

10) Sipahi, R., Olgac, N., A Novel Stability Study on Multiple Time Delayed Systems Using the Root Clustering Paradigm, No. 0267, American Control Conference, Boston, 2004.

9) Olgac, N., Sipahi, R., Ergenc, A.F., Time Delay As a Stabilizing Tool In Target Tracking, Analysis And Experiments, No. 0019, American Control Conference, Boston, 2004.

8) Olgac, N., Sipahi, R., Direct Method for Analyzing the Stability of Neutral Type LTI-Time Delayed Systems, IFAC03 Workshop on Time Delay Systems, Paris, France, 2003.

7) Sipahi, R., Olgac, N., Degenerate Cases in Using the Direct Method, 19th ASME Mechanical Vibration and Noise, Chicago, 2003.

6) Sipahi, R., Olgac, N., Direct Method Implementation for the Stability Analysis of Multiple Time Delayed Systems, IEEE CCA Conference 2003, Istanbul, Turkey. Paper: CD001034, 2003.

5) Sipahi, R., Olgac, N., Stability Analysis of Multiple Time Delayed Systems Using the Direct Method, ASME-IMECE Conference 2003, Washington DC, Paper: 41495, 2003.

4) Mikus, O., Olgac, N., Sipahi, R., An Actively Controlled Harmonic Force Generator, ASME-IMECE Conference 2003, Washington D.C., Paper: 41410, 2003.

3) Olgac, N., Sipahi, R., The Direct Method for the Stability Analysis of Time Delayed LTI Systems, American Control Conference (ACC), Denver, C.O. Paper No: ACC03-ASME0047, 2003.

2) Sipahi, R., Olgac, N., A New Perspective for Time Delayed Control Systems with Application to Vibration Suppression, ASME-IMECE Conference, Paper No: IMECE2002-DSC 33535, New Orleans, L.A., Best Student Paper Award, 2002.

1) Sipahi, R., Olgac, N., A Numerical Study for Time Delayed System Stability Using Direct Method, APM074, Proc. of ESDA, ASME 6th Biennial Conference on Engineering Systems Design and Analysis, Istanbul, Turkey, 2002.

 

 

Other Conference Talks (not peer-reviewed)

7) Qiao, W., Sipahi, R., Creating Delay-Tolerant Networked Dynamical Systems via Designing the Network Graphs, in invited session “Evolving Dynamical Networks Part II”, presented at SIAM (Society of Industrial and Mathematics Society) Conference on Applications of Dynamical Systems, May 22, 2011, Snowbird, Utah (also listed above under ''invited talks' category).

6) Sipahi, R., Niculescu, S.-I., Delay Effects on Stability of Dynamical Systems, invited talk at the Fifth World Congress of Nonlinear Analysts, Orlando, 2008 (also listed above under ''invited talks' category).

5) Sipahi, R., Niculescu, S.-I., Delice, I.I., Olgac, N., Stability of Time Delay Systems: Connection between Rekasius Substitution and Kronecker Summation, 45 min invited talk at session “Functional Differential Equations: Theory, Methods, Applications” at Fifth World Congress of Nonlinear Analysts, Orlando, 2008 (also listed above under 'invited talks' category).

4) Delice, I.I., Sipahi, R., Marion, T.J. Minimization of Costs in Interconnected Supply Networks with Transportation and Decision-Making Delays, SIAM Conference on Optimization, Boston, 2008.

3) Sipahi, R., Niculescu, S.-I., Geometry of the Stability Regions of a Closed Loop Dynamics in Time Delay vs. PI Gains , Conference of American Institute of Mathematics Society, Poitiers, France, 2006.

2) Sipahi, R., Olgac, N., Improvements on the Cluster Treatment of Characteristic Roots and the Case Studies, Proceedings of CNRS-NSF Workshop on Advances in Time-Delayed Systems, Paris, 2003.

1) Olgac, N., Sipahi, R., A new practical stability analysis method for the time delayed LTI systems, invited talk at IFAC Time Delay Systems Workshop, New Mexico, 2001.