JOURNALS

International Journal Papers

2027

[51] J. Kim , J. H. Kim*, and T. Hagiwara,"Computing the L1-Induced Norm of Sampled-Data Systems with Convergence Rate Analysis ", IEEE Transactions on Automatic Control, accepted for publication.

https://doi.org/10.1109/TAC.2026.3728732

2026

[50] G, I. Song and J. H. Kim*, "A Monodromy Operator-based Interpretation for Repetitive Control of Robot Manipulators with Controller Synthesis and Stability Analysis ", Special issue of Dynamical Systems and Mathematical Control Theory, AIMS Mathematics, vol. 11, no. 9, pp. 30460--30483, 2026. (SCI)

https://doi.org/10.3934/math.20261207

[49] H. Y. Park and J. H. Kim*, "An L∞/2 Control for Networked Control Systems with Delays: The Differential Linear Matrix Inequality Approach", International Journal of Robust and Nonlinear Control, accepted for publication.

http://doi.org/10.1002/rnc.70562

[48] O. R. Kang and J. H. Kim*, "The L∞ /L2 -Gain Analysis for Periodic Event-Triggered Control Systems: Discretization Approach and Convergence Rate Analysis", International Journal of Robust and Nonlinear Control, accepted for publication.

https://doi.org/10.1002/rnc.70481

[47] D. Kwak and J. H. Kim*, "A Modified Lifting for Aperiodic Sampled-Data Systems and L1 -Induced Norm Analysis" International Journal of Robust and Nonlinear Control, accepted for publication.

http://doi.org/10.1002/rnc.70401

[46] J. H. Kim* and T. Hagiwara, "Sampled-Data Controller Synthesis for Minimizing the Worst-Timing-Type H2 Norm," IEEE Transactions on Automatic Control, vol. 71 , no. 8, pp. 5510-- 5517, 2026. (SCI)

https://doi.org/10.1109/TAC.2026.3672310

[45] J. H. Kim* and T. Hagiwara, "Upper and Lower Bounds on the Worst-Timing-Type H2 Norm of Sampled-Data Systems ," Automatica, Vol. 193, Article Number: 113208, 2026. (SCI)

http://doi.org/10.1016/j.automatica.2026.113208

[44] O. R. Kang and J. H. Kim*, "A Predefined-Time L∞ Control of Robot Manipulators" International Journal of Robust and Nonlinear Control, vol. 36, no. 7, pp. 3819 -- 3837, 2026. (SCI)

https://doi.org/10.1002/rnc.70375

[43] G. I. Song and J. H. Kim*, "An Operator-Theoretic Approach to Repetitive Control of Uncertain Robot Manipulators " IEEE-CAA Journal of Automatica Sinica, vol. 13, no. 3, pp. 734 -- 736, 2026. (SCI)

https://doi.org/10.1109/JAS.2026.125780

[42] D. Kwak, J. H. Kim*, and T. Hagiwara, "A Generalized Framework for the L1 Optimal Controller Synthesis in Sampled-Data Systems," International Journal of Robust and Nonlinear Control, vol. 36, no. 2, pp. 802 -- 815, 2026. (SCI)

https://doi.org/10.1002/rnc.70165

2025

[41] T. Hagiwara, T. Yuyama, and J. H. Kim*, "L∞/L2 Hankel norm analysis of linear periodically time-varying systems and detection of critical instants," Systems & Control Letters, vol. 205, no. 106235, 2025. (SCI)

https://doi.org/10.1016/j.sysconle.2025.106235

[40] T. Kim, J. H. Kim*, and J. H. Park, "A new robust control framework for heat transfer equations through L1 robust stability analysis and the design of a 2-DoF robust LQI controller," Special issue of Mathematical Control Theory, Analysis, and Applications, AIMS Mathematics, vol. 10, no. 8, pp. 19217--19239, 2025. (SCI)

https://doi.org/10.3934/math.2025859

[39] H. T. Choi, H. Y. Park, T. Kim, and J. H. Kim*, "A novel anomaly forecasting in time-series data: Feedback connection between forecasting and detecting algorithms with applications to power systems," Advanced Intelligent Systems, vol. 7, no. 5, p. 2401141, 2025. (SCI)

https://doi.org/10.1002/aisy.202401141

[38] G. I. Song, H. Y. Park, and J. H. Kim*, "The H∞ robust stability and performance conditions for uncertain robot manipulators," IEEE-CAA Journal of Automatica Sinica, vol. 12, no. 1, pp. 270--272, 2025. (SCI)

https://doi.org/10.1109/JAS.2024.124701

2024

[37] T. Kim and J. H. Kim*, "A new optimal control approach to uncertain Euler-Lagrange equations: H∞ optimal disturbance estimator and generalized H2 optimal tracking controller," Special issue of Advanced Mathematical Modelling in Engineering: Innovative Approaches and Applications, AIMS Mathematics, vol. 9, no.12, pp. 34466--34487, 2024. (SCI)

https://doi.org/10.3934/math.20241642

[36] J. Kim and J. H. Kim*, "The L1 -induced norm analysis for linear multivariable differential equations," Special issue of Numerical Analysis of Differential Equations with Real-world Applications, AIMS Mathematics, vol. 9, no.12, pp. 34205--34223, 2024. (SCI)

https://doi.org/10.3934/math.20241629

[35] H. T. Choi, and J. H. Kim*, "An L∞ performance control for time-delay systems with time-varying delay: delay-independent approach via ellipsoidal D-invariance," Special issue of Numerical Analysis of Differential Equations with Real-world Applications, AIMS Mathematics, vol. 9, no. 11, pp. 30384--30405, 2024. (SCI)

https://doi.org/10.3934/math.20241466

[34] D. Kwak, J. H. Kim*, and T. Hagiwara, "A new quasi-finite-rank approximation of compression operators on L∞[0, H) with applications to sampled-data and time-delay systems: Piecewise linear kernel approximation approach", Journal of the Franklin Institute, vol. 361, no. 18, p. 107271, 2024. (SCI)

https://doi.org/10.1016/j.jfranklin.2024.107271

[33] H. T. Choi, J. H. Kim*, and T. Hagiwara, "Characterizing L1 output feedback controller for nonlinear systems: Existence conditions via output controlled invariance domain," International Journal of Robust and Nonlinear Control, vol. 34, no. 17, pp. 11760--11785, 2024. (SCI)

https://doi.org/10.1002/rnc.7589

[32] O. R. Kang, and J. H. Kim*, "Robust sliding mode control for robot manipulators with analysis on trade-off between reaching time and L∞ gain," Mathematical Methods in the Applied Sciences, vol. 47, no. 9, pp. 7270--7287, 2024. (SCI)

https://doi.org/10.1002/MMA.9972

[31] G. I. Song and J. H. Kim*, "Time-delay compensation-based robust control of mechanical manipulators: Operator-theoretic analysis and experiment validation," Mathematical Methods in the Applied Sciences, vol. 47, no. 1, pp. 318--355, 2024. (SCI)

https://doi.org/10.1002/mma.9656

2023

[30] O. R. Kang and J. H. Kim*, "The l∞ -induced norm of multivariable discrete-time linear systems: Upper and lower bounds with convergence rate analysis," Special issue of Recent Contributions to Difference Equations, AIMS Mathematics, vol. 8, No. 12, pp. 29140--29157, 2023. (SCI)

https://doi.org/10.3934/math.20231492

[29] D. Kwak, J. H. Kim*, and T. Hagiwara, "Robust stability analysis of sampled-data systems with uncertainties characterized by the L∞-induced norm: Gridding treatment with convergence rate analysis", IEEE Transactions on Automatic Control, vol. 68, no. 12, pp. 8119--8125, 2023. (SCI)

https://doi.org/10.1109/TAC.2023.3288631

[28] H. T. Choi and J. H. Kim*, "The L1 controller synthesis for piecewise continuous nonlinear systems via set invariance principles," International Journal of Robust and Nonlinear Control, vol. 33, no. 14, pp.8670--8692, 2023. (SCI)

https://doi.org/10.1002/rnc.6843

[27] H. Y. Park and J. H. Kim*, "Model-free control approach to uncertain Euler-Lagrange equations with a Lyapunov-based L∞-gain analysis ," Special issue of Stability and Optimal Control on Uncertain Systems, AIMS Mathematics, Vol. 8, No. 8, pp. 17666--17686, 2023. (SCI)

https://doi.org/10.3934/math.2023902

[26] H. T. Choi, H. Y. Park, and J. H. Kim*, "Output-based event-triggered control for discrete-time system with three types of performance analysis," Special issue of Stability and Optimal Control on Uncertain Systems, AIMS Mathematics, Vol. 8, No. 7, pp. 17091-17111, 2023. (SCI)

https://doi.org/10.3934/math.2023873

[25] H. Y. Park, H. T. Choi, and J. H. Kim*, "The l∞/p-gains for discrete-time observer-based event-triggered systems," International Journal of Robust and Nonlinear Control, Vol. 33, No. 11, pp. 6121--6134, 2023. (SCI)

https://doi.org/10.1002/rnc.6685

[24] H. T. Choi, and J. H. Kim*, "Set-invariance-based interpretations for the L1 performance of nonlinear systems with non-unique solutions," International Journal of Robust and Nonlinear Control, Vol. 33, No. 3, pp. 1858 -- 1875, 2023. (SCI)

https://doi.org/10.1002/rnc.6469

[23] D. Kwak, J. H. Kim*, and T. Hagiwara, "Generalized framework for computing the L∞ -induced norm of sampled-data systems," Applied Mathematics and Computation, Vol. 437, p. 127518, 2023. (SCI)

https://doi.org/10.1016/j.amc.2022.127518

2022

[22] H. Y. Park, and J. H. Kim*, "The l1 optimal state estimator for load frequency control of power systems: A comparative and extensive study," IEEE ACCESS, Vol. 10, pp. 120680 -- 120689, 2022. (SCI)

https://doi.org/10.1109/ACCESS.2022.3222487

[21] J. H. Lee, J. H. Kim, and P. Park*, "A generalized multiple-integral inequality based on free matrices: Application to stability analysis of time-varying delay systems," Applied Mathematics and Computation, Vol. 430, Article Number: 127288, 2022. (SCI)

https://doi.org/10.1016/j.amc.2022.127288

[20] J. H. Kim*, and T. Hagiwara, "The generalized H2 controller synthesis problem of sampled-data systems," Automatica, Vol. 142, Article Number: 110400, 2022. (SCI)

https://doi.org/10.1016/j.automatica.2022.110400

[19] H. Y. Park, J. H. Kim*, and K. Yamamoto, "A new stability framework for trajectory tracking control of biped walking robots," IEEE Transactions on Industrial Informatics, Vol. 18, No. 10, pp. 6767--6777, 2022. (SCI)

https://doi.org/10.1109/TII.2021.3139909

2021

[18] D. Kim, K. Ryu, J. H. Kim, and J. Back*, "Zero assignment via generalized sampler: a countermeasure against zero-dynamics attack," IEEE Access, Vol. 9, pp. 109932--109942, 2021. (SCI)

https://doi.org/10.1109/ACCESS.2021.3101637

[17] J. H. Kim*, and T. Hagiwara, "L1 optimal controller synthesis for sampled-data systems via piecewise linear kernel approximation," International Journal of Robust & Nonlinear Control, Vol. 31, No. 10, pp. 4933--4950, 2021. (SCI)

https://doi.org/10.1002/rnc.5513

[16] T. Hagiwara, A. Inai and J. H. Kim*, "On well-definability of the L∞/L2 hankel operator and detection of all the critical instants in sampled-data systems,'' IET Control Theory & Applications, Vol. 15, No. 5, pp. 668--682, 2021. (SCI)

https://doi.org/10.1049/cth2.12069

2020

[15] J. H. Kim*, J. Lee and Y. Oh, "A theoretical framework for stability regions for standing balance of humanoids based on their LIPM treatment," IEEE Transactions on Systems, Man, and Cybernetics: Systems, Vol. 50, No. 11, pp. 4569-4586, Nov, 2020. (SCI)

http://dx.doi.org/10.1109/TSMC.2018.2855190

[14] J. H. Kim*, Y. W. Choi and T. Hagiwara, "Computing the L∞-induced norm of LTI systems: generalization of piecewise quadratic and cubic approximations," IEEE Access, Vol. 8, pp. 139868 - 139880, 2020.(SCI)

https://dx.doi.org/10.1109/ACCESS.2020.3012253

[13] J. H. Kim*, and S.-m. Hur, "Induced norm-based analysis for computed torque control of robot systems," IEEE Access, Vol. 8, pp. 126228--126238, 2020. (SCI)

http://dx.doi.org/10.1109/ACCESS.2020.3007949

[12] J. Lee and J. H. Kim*, "A comparative study on the l1 optimal event-based method for biped walking on rough terrains," IEEE Access, Vol. 8, pp. 96304--96314, 2020. (SCI)

http://dx.doi.org/10.1109/ACCESS.2020.2996211

2019~

[11] T. Hagiwara*, A. Inai and J. H. Kim, "The L∞/L2 Hankel operator/norm of sampled-data systems," SIAM Journal on Control and Optimization, Vol. 55, No. 5, pp. 3685-3707, 2018. (SCI)

https://doi.org/10.1137/17M1123146

[10] J. H. Kim, S.-m. Hur and Y. Oh*, "Performance analysis for bounded persistent disturbances in PD/PID-controlled robotic systems with its experimental demonstrations," International Journal of Control, Vol. 91, No. 3, pp. 688-705, 2018 (SCI)

http://dx.doi.org/10.1080/00207179.2017.1288301

[9] J. H. Kim* and T. Hagiwara, "Upper/lower bounds of generalized H2 norms in sampled-data systems with convergence rate analysis and discretization viewpoint," Systems & Control Letters, Vol. 107, pp. 28--35, 2017. (SCI)

http://dx.doi.org/10.1016/j.sysconle.2017.06.008

[8] J. H. Kim* and T. Hagiwara, "Extensive theoretical/numerical comparative studies on H2 and generalised H2 norms in sampled-data systems," International Journal of Control, Vol. 90, No. 11, pp. 2238--2253, 2017. (SCI)

http://dx.doi.org/10.1080/00207179.2016.1257158

[7] J. H. Kim* and T. Hagiwara, "Further results on the L1 analysis of sampled-data systems via kernel approximation approach," International Journal of Control, Vol. 89, No. 8, pp. 1684--1697, 2016. (SCI)

http://dx.doi.org/10.1080/00207179.2016.1144239

[6] J. H. Kim* and T. Hagiwara, "L1 discretization for sampled-data controller synthesis via piecewise linear approximation," IEEE Transactions on Automatic Control, Vol. 61, No. 5, pp. 1143--1157, 2016. cover article (SCI)

http://dx.doi.org/10.1109/TAC.2015.2452815

[5] J. H. Kim*, T. Hagiwara and K. Hirata, "Spectrum of monodromy operator for a time-delay system with application to stability analysis,"IEEE Transactions on Automatic Control, Vol. 60, No. 12, pp. 3385--3390, 2015. (SCI)

http://dx.doi.org/10.1109/TAC.2015.2422479

[4] J. H. Kim* and T. Hagiwara, "Computing the L∞-Induced norm of linear time-invariant systems via kernel approximation and its comparison with input approximation," IET Control Theory & Applications, Vol. 9, No. 5, pp. 700--709, 2015. (SCI)

http://dx.doi.org/10.1049/iet-cta.2014.0453

[3] J. H. Kim* and T. Hagiwara, "L∞-Induced norm analysis of sampled-data systems via piecewise constant and linear approximations," Automatica, Vol. 51, No. 1, pp. 223--232, 2015. (SCI)

http://dx.doi.org/10.1016/j.automatica.2014.10.102

[2] J. H. Kim* and T. Hagiwara, "Computing the L∞[0,h) -induced norm of a compression operator via fast-lifting,'' Systems & Control Letters, Vol. 67, No. 1, pp. 1--8 , 2014. cover article (SCI)

http://dx.doi.org/10.1016/j.sysconle.2014.01.009

[1] J. H. Kim* and T. Hagiwara, "Quasi-finite-rank approximation of compression operators on L∞[0, h) with application to stability analysis of time-delay systems," IET Control Theory & Applications, Vol. 8, No. 2, pp. 77--85, 2014. (SCI)

http://dx.doi.org/10.1049/iet-cta.2013.0458

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