gumussoysuat
Suat Gumussoy 
Bio 
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Dr. Gumussoy is an Associate Professor in the Department of Electrical and Computer Engineering at the University of Texas at Dallas, where he leads a research program on Closed-Loop AI — bridging control theory, system identification, and machine learning, applied to power systems, smart manufacturing, and edge platforms. He previously spent 7 years at Siemens Research, most recently as Senior Key Expert on Closed-Loop AI in the Autonomous Control and Operations group, leading research on ARPA-E ReNew100 and PICO and filing 8+ patents. He is a Senior Member of IEEE since 2020 and a member of the IFAC Technical Committee on Linear Control Systems since 2022. He served as an Associate Editor for IEEE Transactions on Control Systems Technology (2018–2022) and the IEEE Conference Editorial Board (2018–2022). |
Software 
@Siemens Research: Co-architected SCS-Reinforce, a reinforcement learning toolbox inside inside Simcenter Studio, and shaped its ongoing roadmap. Implemented new algorithms for tuning and calibration of ARPA-E power system projects in the intersection of AI and control.
@MathWorks: Key contributions to Reinforcement Learning Toolbox, Robust Control Toolbox, System Identification Toolbox and Control System Toolbox including lead engineer/architect role on Reinforcement Learning Toolbox, the least-squares option in c2d, the frequency-domain tfest estimation algorithm, and the limited balanced truncation algorithm. Authored the Model Reducer and Control System Tuner apps.
@University of Leuven: Designed and implemented a MATLAB toolbox for analysis and control for time-delay systems (H-infinity norm, pseudospectral abscissa, nonsmooth H-infinity controller design).
@NYU Courant: Contributed to the HIFOO, a MATLAB toolbox for fixed-order controller design.
Publications 
Patents
[P9] X. Wu, M. K. Erdal, S. Gumussoy, and U. Muenz. Online calibration of power system model using time series measurement data. European Patent Application: EP4573637A1, published June 25, 2025. Assigned to Siemens Corporation. Status: Pending, June 2025.
[P8] X. Wu, U. Muenz, S. Gumussoy, and R. Ganjavi. Inverter-based resource (IBR) optimized fault-level adjustment based on fault location. U.S. Patent Application: US20250125615A1, published on April 17, 2025. Assigned to Siemens Corporation and Siemens AG. Status: Pending, April 2025.
[P7] S. Gumussoy, J. Vanhuyse, M. Nicolai, and S. Evmorfos. Fast policy training across multiple architectures using reinforcement learning for generative engineering. International Patent Application (PCT): PCT/US2025/01489, filed February 7, 2025. Assigned to Siemens Corporation. Status: Pending, February 2025.
[P6] G. Markov, C.J. Budnik, H.H. Degen, Z. Min, S. Gumussoy, X. Wu, and L. Gilpin. CLEAR-GRID Increase Clarity and Reduce stress for Grid operators, Increase decision accuracy, and Decrease time to decision making using a human-centered RAG approach. U.S. Provisional Patent Application: 63/755,650, filed on February 7, 2025. Assigned to Siemens Corporation. Status: Filed, February 2025.
[P5] D. Hartmann, A. Pandey, S. Gumussoy, and U. Muenz. Explicit rule-based control of complex dynamical systems. U.S. Patent Application: US20240345549A1, published on October 17, 2024. Assigned to Siemens AG and Siemens Corporation. Status: Pending, October 2024.
[P4] X. Wu, U. Muenz, and S. Gumussoy. Determining location and sizing of a new power unit within a current system architecture of a power system or a grid. U.S. Patent Application: US20240354465A1, published on October 24, 2024. Assigned to Siemens Corporation. Status: Pending, October 2024.
[P3] S. Gumussoy, X. Wu, and U. Muenz. Power system model calibration using measurement data. U.S. Patent Application: US20240296261A1, published on September 5, 2024. Assigned to Siemens Corporation and U.S. Department of Energy. Status: Pending, September 2024.
[P2] Y. Wang, U. Muenz, and S. Gumussoy. Multi-asset placement and sizing for robust operation of distribution systems. U.S. Patent Application: US20240232472A1, published on July 11, 2024. Assigned to Siemens Corporation. Status: Pending, July 2024.
[P1] S. Gumussoy, P. J. Mosterman, and A. Ozdemir. Discretization of a model of a system or a portion of the model using system inputs and outputs. U.S. Patent: US20190026404A1, granted on October 27, 2020. Assigned to MathWorks Inc. Status: Active, October 2020.
Book
H. Ozbay, S. Gumussoy, K. Kashima, and Y. Yamamoto. Frequency Domain Techniques for H-Infinity Control of Distributed Parameter Systems. Advances in Design and Control, SIAM, 2018.
Book Chapters
[BC4] S. Gumussoy and P. Gahinet. Computer Aided Control System Design for Time Delay Systems using MATLAB. Delay Systems, Advances in Delays and Dynamics (edited volume), pp. 257-270, Springer, 2013. 
[BC3] S. Gumussoy and W. Michiels. Tuning an H-Infinity Controller with a Given Order and a Structure for Interconnected Systems with Delays. Low-Complexity Controllers for Time-Delay Systems, Advances in Delays and Dynamics (edited volume), pp. 95-110, Springer, 2014.
[BC2] W. Michiels and S. Gumussoy. Eigenvalue based algorithms and software for the design of fixed-order stabilizing controllers for interconnected systems with time-delays. Delay Systems, Advances in Delays and Dynamics (edited volume), pp. 243-256, Springer, 2013.
[BC1] S. Gumussoy and W. Michiels. Fixed-order H-infinity Optimization of Time-Delay Systems. Recent Advances in Optimization and its Applications in Engineering (edited volume), pp. 103-112, Springer, 2010.
Journal Publications
[J23] V. Reddy, S. Gumussoy, A. Boker, and H. Eldardiry. A bottom-up approach for searching for sparse controllers with a budget. IFAC Journal of Systems and Control, vol. 32, 2025.
[J22] N. Junnarkar, E. Jensen, X. Wu, S. Gumussoy, and M. Arcak. Grouping of N − 1 Contingencies for Controller Synthesis: A Study for Power Line Failures. IEEE Transactions on Power Systems, vol. 40, no. 1, pp. 585-596, 2025.
[J21] J. Vanhuyse, C. Bertheaume, S. Gumussoy, and M. Nicolai. Conceptual closed-loop design of automotive cooling systems leveraging reinforcement learning. Forschung im Ingenieurwesen, vol. 89, no. 38, 2025.
[J20] E. Jensen, N. Junnarkar, M. Arcak, X. Wu, and S. Gumussoy. Certifying Stability and Performance of Uncertain Differential-Algebraic Systems: A Dissipativity Framework. IEEE Transactions on Control of Network Systems, vol. 12, no. 1, pp. 18-27, 2024.
[J19] T. Basaklar, A. A. Goksoy, A. Krishnakumar, S. Gumussoy, and U. Y. Ogras. DTRL: Decision Tree-based Multi-Objective Reinforcement Learning for Runtime Task Scheduling in Domain-Specific System-on-Chips. ACM Transactions on Embedded Computing Systems, no. 113, pp. 1–22, 2023.
[J18] S. An, G. Bhat, S. Gumussoy, and U. Y. Ogras. Transfer Learning for Human Activity Recognition using Representational Analysis of Neural Networks. ACM Transactions on Computing for Healthcare, vol. 4, no. 5, pp. 1-21, 2023.
[J17] N. Xue, X. Wu, S. Gumussoy, U. Muenz, A. Mesanovic, Z. Dong, G. Bharati, S. Chakraborty, L. Cockcroft, and L. Dangelmaier. Dynamic Security Optimization for N-1 Secure Operation of Hawai‘i Island System with 100% Inverter-Based Resources. IEEE Transactions on Smart Grid, vol. 13, no. 5, pp. 4009-4021, September 2022.
[J16] G. Bhat, S. Gumussoy, and U. Y. Ogras. Analysis and Control of Power-Temperature Dynamics in Heterogeneous Multiprocessors. IEEE Transactions on Control Systems Technology, vol. 29, no. 1, pp. 329-341, 2020.
[J15] S. Gumussoy and M. Abu-Khalaf. Analytic Solution of a Delay differential Equation Arising in Cost Functionals for System with Distributed Delays. IEEE Transactions on Automatic Control, vol. 64, no. 11, pp. 4833-4840, 2019.
[J14] U. Gupta, M. Babu, R. Ayoub, M. Kishinevsky, F. Paterna, S. Gumussoy, and U. Y. Ogras. An Online Learning Methodology for Performance Modeling of Graphics Processors. IEEE Transactions on Computers, vol. 67, no. 12, pp. 1677-1691, 2018.
[J13] G. Bhat, S. Gumussoy, and U. Y. Ogras. Power-Temperature Stability and Safety Analysis for Multiprocessor Systems. ACM Transactions on Embedded Computing Systems, vol. 16, no. 5, pp. 145:1-20, 2017.
[J12] S. Gumussoy and W. Michiels. Computation of extremum singular values and the strong H-infinity norm of SISO time-delay systems. Automatica, vol. 54, pp. 266-271, 2015.
[J11] T. D. Quoc, S. Gumussoy, W. Michiels, and M. Diehl. Combining Convex-Concave Decomposition and Linearization Approaches for Static Feedback Controller Design (Regular Paper). IEEE Transactions on Automatic Control, vol. 57, no. 6, pp. 1377-1390, 2012.
[J10] S. Gumussoy. Coprime Inner/Outer Factorization of SISO Time-Delay Systems and FIR Structure of Their Optimal H-Infinity Controllers. International Journal of Robust and Nonlinear Control, vol. 22, no. 9, pp. 981-998, 2012.
[J9] S. Gumussoy and W. Michiels. Root-Locus for SISO Dead-Time Systems: A Continuation Based Approach. Automatica, vol. 48, no. 3, pp. 480-489, 2012.
[J8] S. Gumussoy and W. Michiels. Fixed-Order H-infinity Control for Interconnected Systems using Delay Differential Algebraic Equations. SIAM Journal on Control and Optimization, vol. 49, no. 2, pp. 2212-2238, 2011.
[J7] S. Gumussoy, Relative Stability Analysis of Closed-Loop SISO Dead-Time Systems: Non-imaginary Axis Case. Transactions of the Institute of Measurement and Control, vol. 34, no. 4, pp. 411-421, 2011.
[J6] W. Michiels and S. Gumussoy. Characterization and Computation of H-infinity Norms for Time-Delay Systems. SIAM Journal on Matrix Analysis and Applications, vol. 31, no. 4, pp. 2093-2115, 2010.
[J5] S. Gumussoy and W. Michiels. A Predictor-Corrector Type Algorithm for the Pseudospectral Abscissa Computation of Time-Delay Systems (Regular Paper). Automatica, vol. 46, no. 4, pp. 657-664, 2010.
[J4] S. Gumussoy and H. Ozbay. Sensitivity Minimization by Strongly Stabilizing Controllers for a Class of Unstable Time-Delay Systems. IEEE Transactions on Automatic Control, vol. 54, no. 3, pp. 590-595, 2009.
[J3] S. Gumussoy and H. Ozbay. Stable H-infinity Controller Design for Time-Delay Systems. International Journal of Control, vol. 81, no. 4, pp. 546-556, 2008.
[J2] S. Gumussoy and H. Ozbay. Remarks on Strong Stabilization and Stable H-infinity Controller Design. IEEE Transactions on Automatic Control, vol. 50, no. 12, pp. 2083-2087, 2005.
[J1] S. Gumussoy and H. Ozbay. On the Mixed Sensitivity Minimization for Systems with Infinitely Many Unstable Modes. Systems and Control Letters, vol. 53, no. 3-4, pp. 211-216, 2004.
Conference Publications
[C40] A. Stinskiy, U. Muenz, A. Banerjee, S. Gumussoy, S. Elpelt, S. Sano, and T. Barik. From Analog CT, PT to Digital Process Bus - Hardware-in-the-Loop Protection Studies for Inverter-Dominated Transmission Systems. 79th Annual Conference for Protective Relay Engineers (Accepted) and Georgia Tech Fault Protective Relaying Conference (Accepted), April 2026.
[C39] M. Cao, Y. Huang, S. Gumussoy, U. Y. Ogras. Mamba World Model for RL: Enhancing Long-term Memory in Model-based Reinforcement Learning. 24th International Conference on Machine Learning and Applications, December 2025.
[C38] S. Bhela, S. Gumussoy, D. J. Kelly, M. J. Reno, A. Banaie, and U. Muenz. Co-optimization of Inverter Controls and Line Protection Functions for Improved Protection Reliability and System Stability. IEEE Power & Energy Society General Meeting (PESGM), 2025.
[C37] V. R. Baddam, S. Gumussoy, H. Eldardiry, and A. Boker. Searching for Sparse Controllers with a Budget: A Bottom-Up Approach. IEEE American Control Conference, 2024.
[C36] C. Bonnet, H. Ozbay, M. O. Yegin, and S. Gumussoy. Implementation of Stabilizing Controllers for Retarded Delay Systems. IFAC Workshop on Time Delay Systems, 2024.
[C35] T. Basaklar, Y. Tuncel, S. Gumussoy, and U. Y. Ogras. GEM-RL: Generalized Energy Management of Wearable Devices using Reinforcement Learning. Design, Automation and Test in Europe (DATE), April 2023.
[C34] T. Basaklar, S. Gumussoy, and U. Y, Ogras. PD-MORL: Preference-Driven Multi-Objective Reinforcement Learning Algorithm. NeurIPS Deep RL Workshop. 2022. 11th International Conference on Learning Representations (ICLR) Design, 2023.
[C33] K. Fetzer, J. Menu, and S. Gumussoy, Rule Extraction for Black-box Algorithm Analysis and Implementation. 15th Simulation and Digital Twin Conference, Munich, Germany, 2022.
[C32] S. Gumussoy. SSD–Software for Systems with Delays: Reproducible Examples and Benchmarks on Model Reduction and H2 Norm Computation. Joint IFAC Conference: SSSC-TDS-LPVS, Montreal, Canada, 2022.
[C31] T. Basaklar, Y. Tuncel, S. Y. Narayana, S. Gumussoy, and U. Y. Ogras. Hypervector Design for Efficient Hyperdimensional Computing on Edge Devices. tinyML Research Symposium, 2021.
[C30] N. Xue, X. Wu, S. Gumussoy, U. Muenz, A. Mesanovic, Z. Dong, G. Bharati, S. Chakraborty, L. Cockcroft, and L. Dangelmaier. Dynamic Security Optimization for N-1 Secure Operation of Power Systems with 100% Non-Synchronous Generation: First experiences from Hawai’i Island. IEEE Power & Energy Society General Meeting, 2021.
[C29] G. Bhat, S. Gumussoy, and U. Y. Ogras. Power and Thermal Analysis of Commercial Mobile Platforms: Experiments and Case Studies. Design, Automation & Test in Europe Conference & Exhibition (DATE), pp. 144-149, 2019.
[C28] S. Gumussoy and H. Ozbay, On Feedback Stabilization of Neutral Time Delay Systems with Infinitely Many Unstable Poles. 14th IFAC Workshop on Time Delay Systems, Budapest, Hungary, June 28-30, 2018.
[C27] S. Gumussoy, A. A. Ozdemir, T. McKelvey, L. Ljung, M. Gibanica, and R. Singh. Improving Linear State-Space Models with Additional Iterations. 18th IFAC Symposium on System Identification, Stockholm, Sweden, July 9-11, 2018.
[C26] A. A. Ozdemir and S. Gumussoy. Transfer Function Estimation in System Identification Toolbox via Vector Fitting. 20th IFAC World Congress, Toulouse, France, July 9-14, 2017.
[C25] G. Bhat, S. Gumussoy, and U. Y. Ogras. Power-Temperature Stability and Safety Analysis for Multiprocessor Systems. 54th Design Automation Conference, Austin, Texas, USA, June 18-22, 2017. preprint
[C24] U. Gupta, J. Campbell, U. Y. Ogras, R. Ayoub, M. Kishinevsky, F. Paterna, and S. Gumussoy. Adaptive Performance Prediction for Integrated GPUs. International Conference on Computer-Aided Design (ICCAD), Austin, USA, November 7-10, 2016. preprint
[C23] S. Gumussoy, B. Eryilmaz and P. Gahinet. Working with Time-Delay Systems in MATLAB. 10th IFAC Workshop on Time-Delay Systems, Boston, USA, June 22-24, 2012.
[C22] W. Michiels and S. Gumussoy. Eigenvalue based Analysis and Controller Synthesis for Systems described by Delay Differential Algebraic Equations. 10th IFAC Workshop on Time-Delay Systems, Boston, USA, June 22-24, 2012.
[C21] D. Arzelier, G. Deaconu, S. Gumussoy, and D. Henrion. H2 for HIFOO (invited session). 3rd International Conference on Control and Optimization with Industrial Applications, Ankara, Turkey, August 22-24, 2011. abstract
[C20] S. Gumussoy and W. Michiels. Direct Strong H-infinity Norm Computation for SISO Time-Delay Systems (invited session). 3rd International Conference on Control and Optimization with Industrial Applications, Ankara, Turkey, August 22-24, 2011.
[C19] S. Gumussoy and W. Michiels. Fixed-order Strong H-infinity Control of Interconnected Systems with Time-Delays (minisymposium). 18th IFAC World Congress, Milano, Italy, August 28-September 2, 2011.
[C18] S. Gumussoy and W. Michiels. On the Sensitivity of the H-infinity Norm of Interconnected Systems with Time-Delays (minisymposium). 18th IFAC World Congress, Milano, Italy, August 28-September 2, 2011.
[C17] S. Gumussoy and W. Michiels. Continuation Based Computation of Root-Locus for SISO Dead-Time Systems. 9th IFAC Workshop on Time-Delay Systems, 2010.
[C16] S. Gumussoy, D. Henrion, M. Millstone, and M. L. Overton. Multiobjective robust control with HIFOO 2.0. 6th IFAC Symposium on Robust Control Design, 2009.
[C15] S. Gumussoy and W. Michiels. Computing the Pseudospectral Abscissa of Time-Delay Systems. 8th IFAC Workshop on Time-Delay Systems, 2009.
[C14] S. Gumussoy and W. Michiels. Computing H-infinity Norms of Time-Delay Systems. 28th Benelux Meeting on Systems and Control, 2009. slides
[C13] S. Gumussoy and W. Michiels. Computing H-infinity Norms of Time-Delay Systems. 48th IEEE Conference on Decision and Control, pp. 263-268, 2009.
[C12] S. Gumussoy and W. Michiels. Fixed-Order H-infinity Optimization of Time-Delay Systems. 14th Belgian-French-German Conference on Optimization, 2009. slides
[C11] S. Gumussoy, M. Millstone and M. L. Overton. H-infinity Strong Stabilization via HIFOO, a Package for Fixed-Order Controller Design. 47th IEEE Conference on Decision and Control, pp. 4135-4140 , 2008.
[C10] S. Gumussoy. On the Zeros of Quasi-Polynomials with Single-Delay. American Control Conference, pp. 5282-5286, 2008.
[C9] S. Gumussoy and M. L. Overton. Fixed-Order H-Infinity Controller Design via HIFOO, a Specialized Nonsmooth Optimization Package. American Control Conference, pp. 2750-2754, 2008.
[C8] S. Gumussoy, M. Millstone and M. L. Overton. Design of Fixed-Order Controllers via Nonsmooth Optimization. SIAM Conference on Optimization, Boston, MA, 2008. slides
[C7] S. Gumussoy and H. Ozbay. Sensitivity Minimization by Stable Controllers: An Interpolation Approach for Suboptimal Solutions. 46th IEEE Conference on Decision and Control, pp. 6071-6076, 2007.
[C6] S. Gumussoy and H. Ozbay. Sensitivity Minimization by Stable Controllers for a Class of Unstable Time-Delay Systems. 9th International Conference on Control, Automation, Robotics and Vision, pp. 1-5, 2006.
[C5] H. Ozbay and S. Gumussoy. Remarks on H-infinity Controller Design for SISO Plants with Time Delays. 5th IFAC Symposium on Robust Control Design, 2006.
[C4] S. Gumussoy and H. Ozbay. Remarks on Strong Stabilization and Stable H-infinity Controller Design. 43rd IEEE Conference on Decision and Control, vol. 3, pp. 2621-2624, 2004.
[C3] S. Gumussoy and H. Ozbay. On Stable H-infinity Controllers for Time Delay Systems. 16th International Symposium on Mathematical Theory of Network and Systems, 2004.
[C2] M. Saglam, S. Ezercan, S. Gumussoy, and H. Ozbay. Controller Tuning for Active Queue Management using a Parameter Space Method. 16th International Symposium on Mathematical Theory of Network and Systems, 2004.
[C1] S. Gumussoy and H. Ozbay. Control of Systems with Infinitely Many Unstable Modes and Strong Stabilizing Controllers Achieving a Desired Sensitivity. 15th International Symposium on Mathematical Theory of Network and Systems, pp. 1-10, 2002.
ArXiv Preprints
[A2] V. R. Baddam, S. Gumussoy, A. Boker, and H. Eldardiry. Learning Emergence of Interaction Patterns across Independent RL Agents in Multi-Agent Environments. ArXiv, 2024.
[A1] M. Abu-Khalaf and S. Gumussoy. Comments on: “Lyapunov matrices for a class of time delays systems” by V. L. Kharitonov. ArXiv, 2018.
Dissertation
S. Gumussoy. Optimal H-infinity Controller Design and Strong Stabilization for Time-Delay and MIMO Systems. Ph.D. Thesis, Ohio State University, Electrical Engineering, 2004.
Others
[T1] K. Fetzer and S. Gumussoy. Implementation of digital twin calibration and AI-driven control on Yahboom tank robot for Siemens’ smart manufacturing use case. Future of Automation Tech Talk Series, Siemens Technology, Princeton, 2023.
[Webinar] S. Gumussoy. Time-Delay Systems: Analysis and Design with MATLAB and Simulink. MathWorks, December 4, 2012.
[Blog] P. Gahinet, S. Gumussoy, E. Korkut, and M. Cuenant. Control System Tuning without Guess or Stress. MathWorks, April 3, 2014.