Publications

International Journal

[J7] H. T. Choi, H. Y. Park, T. Kim, J. H. Kim*, “A novel anomaly forecasting in time-series data: Feedback connection between forecasting and detecting algorithms with applications to power systems,” Adv. Intellg. Syst., vol. 7, no. 5, article no. 2401141, 2025. (Link)

[J6] H. T. Choi, J. H. Kim*, “An L∞ performance control for time-delay systems with time-varying delays: Delay-independent approach via ellipsoidal D-invariance,” AIMS Math., vol. 9, no. 11, pp. 30384--30405, 2024. (Link)

[J5] H. T. Choi, J. H. Kim*, T. Hagiwara, “Characterizing L1 output-feedback controller for nonlinear systems: Existence conditions via output controlled invariance domain,” Int. J. Robust Nonlin. Control, vol. 34, no. 17, pp. 11760--11785, 2024. (Link)

[J4] H. T. Choi, J. H. Kim*, “The L1 controller synthesis for piecewise continuous nonlinear systems via set invariance principles,” Int. J. Robust Nonlin. Control, vol. 33, no. 14, pp. 8670–8692, 2023. (Link)

[J3] H. Y. Park, H. T. Choi, J. H. Kim*, “The ℓp/q-gains for discrete-time observer-based event-triggered systems,” Int. J. Robust Nonlin. Control, vol. 33, no. 11, pp. 6121–6134, 2023. (Link)

[J2] H. T. Choi, H. Y. Park, J. H. Kim*, “Output-based event-triggered control for discrete-time system with three types of performance analysis,” AIMS Math., vol. 8, no. 7, pp. 17091–17111, 2023. (Link)

[J1] H. T. Choi, J. H. Kim*, “Set-invariance-based interpretations for the L1 performance of nonlinear systems with non-unique solutions,” Int. J. Robust Nonlin. Control, vol. 33, no. 3, pp. 1858–1875, 2023. (Link)

International Conference

[IC8] H. Y. Park, J. Kim, H. T. Choi, J. H. Kim*, “A differential linear matrix inequality-based approach to the worst-timing-type H2 control of sampled-data systems,” accepted for presentation (and including in the proceedings) at IEEE Conf. Decision Control (CDC 2025), Rio de Janeiro, Brazil, Dec. 09–12, 2025.

[IC7] H. Y. Park, H. T. Choi, J. H. Kim*, “Analysis and synthesis for the L_infty/2-induced norms of sampled-data systems via differential linear matrix inequality approach,” accepted for presentation (and including in the proceedings) at IEEE Conf. Decision Control (CDC 2025), Rio de Janeiro, Brazil, Dec. 09–12, 2025.

[IC6] H. T. Choi, J. H. Kim*, R. G. Sanfelice, “A barrier function-based approach for nonlinear L1 control,” accepted for presentation (and including in the proceedings) at IEEE Conf. Decision Control (CDC 2025), Rio de Janeiro, Brazil, Dec. 09–12, 2025.

[IC5] H. T. Choi, J. H. Kim*, “The L1 controller synthesis for piecewise continuous nonlinear systems via se tinvariance principles - A dissemination version,” In Proc. Int. Conf. Control Automat. Syst. (ICCAS 2024), Jeju, Korea, Oct. 29 – Nov. 1, 2024, pp. 877–881.

[IC4] H. T. Choi, J. H. Kim*, “On set-invariance for nonlinear output-feedback control systems: A modifed control barrier function,” In Proc. Int. Conf. Control Automat. Syst. (ICCAS 2023), Yeosu, Korea, Oct. 17–20, 2023, pp. 66–69.

[IC3] H. T. Choi, J. H. Kim*, “The L1-gain analysis of time-delay systems via ellipsoidal D-invariance,” In Proc. Int. Conf. Control Automat. Syst. (ICCAS 2022), Busan, Korea, Nov. 27–Dec. 1, 2022, pp. 1124–1127.

[IC2] H. T. Choi, J. H. Kim*, “The L1 dynamic output-feedback controller synthesis for nonlinear systems,” In Proc. The 13th Asian Control Conf. (ASCC 2022), Jeju, Korea, May 4–7, 2022, pp. 1427–1428.

[IC1] H. T. Choi, J. H. Kim*, “Invariance domain for the L1 performance of nonlinear systems,” In Proc. Int. Conf. Control Automat. Syst. (ICCAS 2021), Jeju, Korea, Oct. 12–15, 2021, pp. 1194–1198.

Domestic Conference

[DC7] H. T. Choi, H.Y. Park, T. Kim, J. H. Kim*, “RRCF-based fault detection for power systems,” In Proc. SummerConf. Korean Inst. Electr. Eng. (KIEE Summer 2023), Pyeongchang, Korea, Jul. 12–15, 2023, pp. 1808–1809.

[DC6] H. T. Choi, J. H. Kim*, “Reachable set estimation for linear systems with time-varying delays: Auxiliary functional approach,” In Proc. Annual Conf. Inst. Control, Robot. Syst. (ICROS 2023), Samcheok, Korea, Jun. 21–23, 2023, pp. 112–113.

[DC5] H. T. Choi, J. H. Kim*, “Anomaly forecasting algorithm for power network systems,” In Proc. Autumn Annual Conf. Inst. Electronics Inform. Eng. (IEIE Autumn 2022), Gwangju, Korea, Nov. 25–26, 2022, pp. 259–262.

[DC4] H. T. Choi, J. H. Kim*, “Reachable set estimation for positive systems with time-varying delays,” In Proc. Conf. Inform. Control Syst. (CICS 2022), Pyeongchang, Korea, Oct. 19–22, 2022, pp. 261–262.

[DC3] H. T. Choi, J. H. Kim*, “Multi-step state forecasting in power systems with recurrent neural networks,” In Proc. Summer Conf. Korean Inst. Electr. Eng. (KIEE Summer 2022), Yeosu, Korea, Jul. 13–16, 2022, pp. 1855–1856.

[DC2] H. T. Choi, J. H. Kim*, “The L1 control problem of piecewise continuous nonlinear systems,” In Proc. Annual Conf. Inst. Control, Robot. Syst. (ICROS 2021), Yeosu, Korea, Jun. 23–25, 2021, pp. 639–640.

[DC1] H. T. Choi, J. H. Kim*, “A study on the L1 performance of nonlinear systems,” In Proc. Conf. Inform. Control Syst. (CICS 2020), Jeju, Korea, Oct. 22–24, 2020, pp. 136–137.

Periodical/Magazine

[PM1] H. T. Choi, “Basic concept, history, and recent trends of control barrier functions,” The Korean Institute of Electrical Engineers(KIEE) - Magazine, vol. 74, no. 8, pp. 19–24, 2025. (Link)

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