Publications

Under Review

• S. Hwang*, G. Wu, M. Cho, and I. Hwang, "Energy-Aware Consensus Control for Multi-Agent Systems with Guaranteed Battery Safety via H-Infinity LMI Design," IEEE Control Systems Letters (L-CSS), Submitted in May 2026.
• S. Hwang*, M. Cho, G. Wu, and I. Hwang, "Cooperative Constrained Control of Multi-Agent Systems with Rate-Limited Actuators: An LMI-Based Approach," 65th IEEE Conference on Decision and Control (CDC), Submitted in March 2026.
• S. Hwang*, G. Wu, M. Cho, and I. Hwang, "Koopman-Based State-of-Charge Observer Design for Lithium-Ion Batteries: An LMI-Based Framework," ASME Letters in Dynamic Systems and Control, Submitted in March 2026.
• G. Wu, S. Hwang*, Z. Chen, and I. Hwang, "Deep Koopman-Style Framework for Cross-Temperature State-of-Charge Estimation of Lithium-Ion Batteries," 2026 Modeling, Estimation and Control Conference (MECC), Submitted in March 2026.

Journal Papers

• G. Kim, J. Kim, S. Hwang*, and H. S. Kim, "Scale-Aware Mosaic Augmentation and GSIoU-Based Varifocal Loss for Robust Object Detection Under Scale Imbalance," Electronics, vol. 15, no. 5, pp. 1075, Mar. 2026.
• S. Hwang*, M. Cho, and I. Hwang, "LMI-Driven Reachability Analysis for Fuzzy Model-Based Nonlinear Systems Subject to Norm-Bounded Input Perturbations," IEEE Control Systems Letters (L-CSS), vol. 10, pp. 55–60, Jan. 2026.
• S. Hwang*, M. Cho, G. Wu, and I. Hwang, "Resilient Tracking Control for Leader-Follower Multi-Agent Systems Against Sinusoidal Sensor Attacks: An LMI-Based Framework," IEEE Control Systems Letters (L-CSS), vol. 9, pp. 1123–1128, Jun. 2025.
• S. Lee, S. Hwang*, and H. S. Kim, "T-S Fuzzy Observer-based Output Feedback Lateral Control of Unmanned Grounded Vehicles Using a Disturbance Observer," Drones, vol. 8, no. 11, Nov. 2024.
• S. Hwang*, M. Cho, S. Kim, and I. Hwang, "An LMI-based Risk Assessment of Leader-Follower Multi-Agent System under Stealthy Cyberattacks," IEEE Control Systems Letters (L-CSS), vol. 7, pp. 2419–2424, Jun. 2023.
• S. Clarke, S. Hwang*, O. Thapliyal, and I. Hwang, "Distributed Denial-of-Service Resilient Control for Urban Air Mobility Applications," AIAA Journal of Aerospace Information Systems, vol. 20, no. 12, pp. 873–889, Sep. 2023.
• H. S. Kim, S. Hwang*, and Y. Joo, "Interval Type-2 Fuzzy-model-based Fault-tolerant Sliding Mode Tracking Control of a Quadrotor UAV Under Actuator Saturation," IET Control Theory and Applications, vol. 14, no. 20, pp. 3663–3675, Dec. 2020.
• S. Hwang* and H. S. Kim, "Extended Disturbance Observer-Based Integral Sliding Mode Control for Nonlinear System via T-S Fuzzy Model," IEEE Access, vol. 8, Jun. 2020.
• S. Hwang*, J. B. Park, and Y. Joo, "Disturbance observer-based integral fuzzy sliding-mode control and its application to wind turbine system," IET Control Theory and Applications, vol. 13, no. 12, pp. 1891–1900, Jul. 2019.
• S. Hwang*, J. B. Park, and Y. Joo, "Observer-based H∞ fuzzy controller design of interval type-2 T-S fuzzy systems under imperfect premise matching," Transactions of the Korean Institute of Electrical Engineers, vol. 66, no. 11, pp. 1620–1627, Nov. 2017.

Conference Proceedings

• S. Hwang*, M. Cho, and I. Hwang, "LMI-Driven Tracking Control of Fuzzy Nonlinear Cyber-Physical Systems: Application to Quadrotor UAVs in Urban-Like Environment," AIAA SciTech 2026: Intelligent Systems, Orlando, FL, Jan. 2026.
• M. Cho, S. Hwang*, G. Wu, V. Vishnu, S. Byeon, and I. Hwang, "C-Rate Constrained Path Planning for Battery Pack Health Management in Long-Term eVTOL Operations," AIAA SciTech 2026: Electrified Aircraft Technology, Orlando, FL, Jan. 2026.
• S. Hwang*, M. Cho, G. Wu, and I. Hwang, "Resilient Tracking Control for Leader-Follower Multi-Agent Systems Against Sinusoidal Sensor Attacks: An LMI-Based Framework," 64th IEEE Conference on Decision and Control (CDC), Rio de Janeiro, Brazil, Dec. 2025.
• S. Kim, M. Cho, S. Hwang*, and I. Hwang, "Safety-Critical Control for Nonlinear Affine System with Robustness and Attack Recovery," AIAA SciTech 2025: Cybersecurity, Orlando, FL, Jan. 2025.
• Y. Guo, K. A. Pant, S. Hwang*, V. Vijay, J. M. Goppert, and I. Hwang, "RESiLIENT: A Neural-Symbolic Resilient Threat-Response Framework for Large-Scale Hierarchical Swarms," GENZERO Workshop, Abu Dhabi, UAE, Nov. 2024.
• M. Cho, S. Hwang*, and I. Hwang, "Risk Assessment of Multi-Agent System Under Denial-of-Service Cyberattacks Using Reachable Set Synthesis," IEEE American Control Conference (ACC), Toronto, Canada, Jul. 2024.
• S. Hwang*, M. Cho, S. Kim, and I. Hwang, "An LMI-based Risk Assessment of Leader-Follower Multi-Agent System under Stealthy Cyberattacks," 62nd IEEE Conference on Decision and Control (CDC), Singapore, Dec. 2023.
• S. G. Clarke, O. Thapliyal, S. Hwang*, and I. Hwang, "Attack-Resilient Distributed Optimization-based Control of Multi-Agent Systems with Dual Interaction Networks," AIAA SciTech 2022: Intelligent Systems, San Diego, CA, Jan. 2022.
• S. Hwang*, J. B. Park, and Y. Joo, "Disturbance Observer-Based H∞ Control of the T-S Fuzzy Model Under Imperfect Premise Matching," IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Auckland, New Zealand, Jul. 2018.

Book Chapter

• S. Hwang*, M. Cho, and I. Hwang, "Proactive Risk Assessment of Multi-Vehicle Transportation Systems via Reachability Analysis against Stealthy Attacks," in Advances in Transportation Cybersecurity and Resilience, World Scientific Publishing. (To appear)