List of English Publication

@article{SonShimJoSeo03b,

title = {Output feedback passification of nonlinear systems not in normal form},

author = {Young Ik Son and Hyungbo Shim and Nam Hoon Jo and Jin Heon Seo},

url = {https://www.researchgate.net/publication/294644438_Output_Feedback_Passification_of_Nonlinear_Systems_not_in_Normal_Form},

issn = {0916-8508},

year  = {2003},

date = {2003-05-01},

journal = {IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences},

volume = {E86A},

number = {5},

pages = {1312-1315},

abstract = {In this paper, the problem of output feedback passification for nonlinear systems is considered. Contrary to the conventional methodologies, our approach does not require the normal form representation of the system. Consequent advantages include that the system need not have a well-defined relative degree. In particular, we present a necessary and sufficient condition for output feedback passification without relying on the normal form. The proposed condition finally leads to an extension for a recent result when the system does have a normal form.},

keywords = {nonlinear systems},

pubstate = {published},

tppubtype = {article}

}

@article{ShimTeel03,

title = {Asymptotic Controllability and Observability imply Semiglobal Practical Asymptotic Stabilizability},

author = {Hyungbo Shim and Andrew R. Teel},

doi = {10.1016/S0005-1098(02)00278-9},

issn = {0005-1098},

year  = {2003},

date = {2003-03-01},

journal = {Automatica},

volume = {39},

number = {3},

pages = {441-454},

abstract = {It is shown, for general nonlinear systems, that asymptotic controllability and observability are sufficient for semiglobal practical asymptotic stabilization by output feedback. Indeed, as previously shown in the literature, asymptotic controllability implies the existence of a (discontinuous in general) state feedback that, when implemented by sample and hold, is semiglobally practically stabilizing and robust to measurement disturbance; moreover, a weak form of observability allows reconstruction of the state with arbitrary precision in an arbitrarily short amount of time. So, we can build an output feedback that operates periodically in two modes: an initial, small fraction of a sampling period is used to estimate the state, and the remainder of the sampling period is used to implement the state feedback control using the state estimate. Our stabilization results are presented not only for compact target sets (e.g., the origin) but also for noncompact target sets.},

keywords = {Asymptotic controllability},

pubstate = {published},

tppubtype = {article}

}

@article{ShimSeo03,

title = {Recursive nonlinear observer design: beyond the uniform observability},

author = {Hyungbo Shim and Jin Heon Seo},

doi = {10.1109/TAC.2002.808485},

issn = {0018-9286},

year  = {2003},

date = {2003-02-01},

journal = {IEEE Transactions on Automatic Control},

volume = {48},

number = {2},

pages = {294-298},

abstract = {We propose a recursive design scheme of a state observer for multiple-input-multiple-output, partly lower triangular nonlinear systems. The design begins from the subdynamics far from the output and propagates to the subdynamics close to the output, recalling the backstepping scheme for nonlinear control. The proposed class of systems is fairly general since it includes nonuniformly observable and/or detectable multioutput systems. Error convergence to zero is proved assuming boundedness of inputs a posteriori (i.e., after the design), which is preferable whereas most results in the literature assume the boundedness; a priori (i.e., before the design). A global observer is proposed with the global Lipschitz condition of the system, but without any restriction on the size of Lipschitz coefficient. The Lipschitz condition can be removed when a semiglobal observer is of interest.},

keywords = {Observability},

pubstate = {published},

tppubtype = {article}

}

@article{ChoiShimSonSeo03,

title = {Design of an adaptive observer for a class of nonlinear systems},

author = {Y.U. Choi and Hyungbo Shim and Young Ik Son and Jin Heon Seo},

issn = {1598-6446},

year  = {2003},

date = {2003-01-01},

journal = {International Journal of Control, Automation, and Systems},

volume = {1},

number = {1},

pages = {28-34},

keywords = {nonlinear systems},

pubstate = {published},

tppubtype = {article}

}

@article{SonShimSep02,

title = {Set-point control of elastic joint robots using only position measurements},

author = {Young Ik Son and Hyungbo Shim and Jin Heon Seo},

doi = {10.1007/BF02984017},

issn = {1738-494X},

year  = {2002},

date = {2002-08-01},

journal = {KSME International Journal},

volume = {16},

number = {1079},

pages = {1079-1088},

abstract = {Motivated by the dynamic output feedback passification results, point-to-point control laws for an elastic joint robot are presented when only the position measurements are available. The proposed method makes a parallel connection of the robot system and an input-dimensional linear system which obtains the effect of the desired differentiators. It is shown that the closed-loop nonlinear robot system can be rendered output strictly passive and the regulation of the system is achieved in the end. Robustness analysis is also given with regard to uncertainties on the robot parameters. Performance of the proposed control law is illustrated in the simulation studies of a manipulator with three revolute elastic joints.},

keywords = {Passivity},

pubstate = {published},

tppubtype = {article}

}

@article{SonShimParkSeo02,

title = {Passification of non-square linear systems using an input-dimensional dynamic feedforward compensator},

author = {Young Ik Son and Hyungbo Shim and Kyoung-cheol Park and Jin Heon Seo},

url = {https://search.ieice.org/bin/summary.php?id=e85-a_2_422&category=A&year=2002&lang=E&abst=},

issn = {0916-8508},

year  = {2002},

date = {2002-02-01},

journal = {IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences},

volume = {E85-A},

number = {2},

pages = {422-431},

abstract = {We present a state-space approach to the problem of designing a parallel feedforward compensator (PFC), which has the same dimension of the input i.e. input-dimensional, for a class of non-square linear systems such that the closed-loop system is strictly passive. For a non-minimum phase system or a system with high relative degree, passification of the system cannot be achieved by any other methodologies except by using a PFC. In our scheme, we first determine a squaring gain matrix and an additional dynamics that is connected to the system in a feedforward way, then a static passifying control law is designed. Consequently, the actual feedback controller will be the static control law combined with the feedforward dynamics. Necessary and sufficient conditions for the existence of the PFC are given by the static output feedback formulation, which enables to utilize linear matrix inequality (LMI). Since the proposed PFC is input-dimensional, our design procedure can be viewed as a solution to the low-order dynamic output feedback control problem in the literature. The effectiveness of the proposed method is illustrated by some numerical examples.},

keywords = {static output feedback},

pubstate = {published},

tppubtype = {article}

}

@article{JoSeo02,

title = {Observer design for nonlinear systems that are not uniformly observable},

author = {Nan Hoon Jo and Jin Heon Seo},

doi = {10.1080/00207170110112287},

issn = {0020-7179},

year  = {2002},

date = {2002-01-01},

journal = {Journal International Journal of Control},

volume = {75},

number = {5},

pages = {369-380},

abstract = {The observer design problem is studied for a class of single-output non-linear systems that are not necessarily uniformly observable. In the first part of this paper, the non-linear observer canonical form is generalized to the partial non-linear observer canonical form which is quite similar to the decomposition of a linear system into its observable and unobservable states. A necessary and sufficient condition is given for a non-linear system to be transformable into this canonical form by the change of coordinates. Based on this canonical form, a sufficient condition is given for the existence of observers. In the second part, a high gain observer for a class of non-linear systems that are not uniformly observable will be developed in order to relax the system structure of the partial non-linear observer canonical form. To this end, a new canonical form is proposed that generalizes the canonical form of uniform observability and a sufficient condition is provided based on the proposed canonical form.},

keywords = {Observer design},

pubstate = {published},

tppubtype = {article}

}

@article{JiBackSeo01,

title = {Adaptive regulation of high order lower-triangular systems with an unknown virtual control coefficient},

author = {Ilhoon Ji and Juhoon Back and Jin Heon Seo},

doi = {10.1016/S1474-6670(17)35156-X},

issn = {2589-3653},

year  = {2001},

date = {2001-07-01},

journal = {IFAC Proceedings Volumes},

volume = {11},

number = {2},

pages = {97-107},

abstract = {This paper deals with adaptive control of a class of linearly parametrized highorder nonlinear systems that are of a lower-triangular structure, but neither feedback Iinearizable nor affine in the control input. In Lin, et al. (2000a) it was shown that such a class of nonlinear systems can be adaptively regulated in a globally stable manner by using a new adaptive control technique called adding a power integrator recursively. In this paper adding a power integrator is extended to adding a power integrator with an unknown constant; called virtual control coefficient.},

keywords = {Adaptive regulation},

pubstate = {published},

tppubtype = {article}

}

@article{ShimSonSeo01,

title = {Semi-global observer for multi-output nonlinear systems},

author = {Hyungbo Shim and Young Ik Son and Jin Heon Seo},

doi = {10.1016/S0167-6911(00)00098-0},

issn = {0167-6911},

year  = {2001},

date = {2001-03-15},

journal = {Systems & Control Letters},

volume = {42},

number = {3},

pages = {233-244},

abstract = {We present an explicit form of nonlinear observers for a class of multi-input multi-output systems. Observer construction for multi-output nonlinear systems is not a trivial extension of single output case, especially when the global error convergence is of interest. In this paper, we consider a class of systems in which the subsystem for each output has a triangular dependence on the states of that subsystem itself, and the overall system has a block triangular form for each subsystem. Hence, the contribution is to extend the results existing in the literature in that interconnections between the subsystems are allowed. The construction is based on the saturation of some estimates, which is originated by Khalil and Esfandiari for the use of semi-global output feedback control.},

keywords = {Semi-global observer},

pubstate = {published},

tppubtype = {article}

}

@article{JoSeo00,

title = {Input output linearization approach to state observer design for nonlinear system},

author = {Nam Hoon Jo and Jin Heon Seo},

url = {http://s-space.snu.ac.kr/handle/10371/37549},

doi = {10.1109/9.895580},

issn = {0018-9286},

year  = {2000},

date = {2000-12-01},

journal = {IEEE Transactions on Automatic Control},

volume = {45},

number = {12},

pages = {2388-2393},

abstract = {Presents a state observer for a class of nonlinear systems based on the input output linearization. While the previous result presented state observers for nonlinear systems of full relative degree, we proposed a procedure fur the design of nonlinear state observers which do not require the hypothesis of full relative degree. Assuming that there exists a global state observer for internal dynamics and that some functions are globally Lipschitz, we can design a globally convergent state observer. It is also shown that if the zero dynamics are locally exponentially stable, then there exists a local state observer. An example is given to illustrate the proposed design of nonlinear state observers.},

keywords = {nonlinear systems},

pubstate = {published},

tppubtype = {article}

}

@article{JoSeo00b,

title = {A state observer for nonlinear systems and its application to ball and beam system},

author = {Nam Hoon Jo and Jin Heon Seo},

doi = {10.1109/9.855562},

issn = {0018-9286},

year  = {2000},

date = {2000-05-01},

journal = {IEEE Transactions on Automatic Control},

volume = {45},

number = {5},

pages = {968-973},

abstract = {In this paper, we present a state observer for single-input/single-output nonlinear systems which fail to have well defined relative degree. It is shown that there exists a local state observer for a nonlinear system if it has robust relative degree n. The proposed observer utilizes the coordinate change which transforms a system into an approximate normal form. The proposed method is applied to a ball and beam system, and simulation results show that substantial improvement in the performance was achieved compared with other local observers.},

keywords = {nonlinear systems},

pubstate = {published},

tppubtype = {article}

}

@article{ShinSeo00,

title = {Nonlinear output feedback stabilization on a bounded region of attraction},

author = {Hyungbo Shim and Jin Heon Seo},

doi = {10.1080/002071700219597},

issn = {0020-7179},

year  = {2000},

date = {2000-01-01},

journal = {International Journal of Control},

volume = {73},

number = {5},

pages = {416-426},

abstract = {In this paper it is shown that, for multi-input single-output non-affine non-linear systems, when a state feedback control stabilizes an equilibrium point of a plant with a certain bounded region of attraction, it is also stabilized by an output feedback controller with arbitrarily small loss of the region. Moreover, the proposed output feedback controller has the dynamic order n which is the same as the order of the plant. From any given state feedback, an explicit form of the overall controller is provided. A sufficient condition presented for the result is shown to be necessary and sufficient for regional uniform observability when the system is input affine. Thus, the result can be regarded as a regional separation principle for affine non-linear systems.},

keywords = {Non-linear},

pubstate = {published},

tppubtype = {article}

}

@article{JoSeo00c,

title = {Local separation principle for non-linear systems},

author = {Nam Hoon Jo and Jin Heon Seo},

doi = {10.1080/002071700219641},

issn = {0020-7179},

year  = {2000},

date = {2000-01-01},

journal = {International Journal of Control},

volume = {73},

number = {4},

pages = {292-302},

abstract = {In this paper, we consider the problem of locally stabilizing non-linear systems by output feedback control. To be precise, the separation principle for non-linear systems are studied, which allows the design of the control law and the observer to be carried out independently. While the previous results assumed the existence of Lyapunov function for the observation error, we assume the existence of a state observer which asymptotically estimates the true state. As a matter of fact, it turns out that the latter condition is necessary for the former condition, but the converse is not true. The separation principle with the reduced order observer is also presented. Under the assumption that a non-linear system has asymptotically stable zero dynamics and is locally detectable, it is shown that the asymptotic output tracking by output feedback control can be achieved.},

keywords = {Non-Linear Systems},

pubstate = {published},

tppubtype = {article}

}

@article{KangJoChunSeo99,

title = {Global stabilization of minimum phase nonlinear systems with unknown virtual control coefficients},

author = {Min-Su Kang and Nam Hoon Jo and Kwan-Ho Chun and Jin Heon Seo},

url = {https://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE01269298&language=ko_KR},

year  = {1999},

date = {1999-10-01},

journal = {Journal of Electrical Engineering and Information Science},

volume = {5},

number = {5},

pages = {584-593},

keywords = {stabilization},

pubstate = {published},

tppubtype = {article}

}

@article{JoJooNohLeeSeo99,

title = {Robust stabilization of nonminimum phase nonlinear systems},

author = {Nam Hoon Jo and  Sung-Jun Joo and Dae Jong Noh and Sang-Hyuk Lee and Jin Heon Seo},

year  = {1999},

date = {1999-06-01},

journal = {Journal of Electrical Engineering and Information Science},

volume = {4},

number = {4},

pages = {305-314},

keywords = {nonlinear systems},

pubstate = {published},

tppubtype = {article}

}

@article{SeoJoLee99,

title = {Decentralized H_inf-controller design},

author = {Jin Heon Seo and Cheol H. Jo and Sang-Hyuk Lee},

doi = {10.1016/S0005-1098(98)00208-8},

issn = {0005-1098},

year  = {1999},

date = {1999-05-01},

journal = {Automatica},

volume = {35},

number = {5},

pages = {865-876},

abstract = {In this paper, a decentralized -controller design problem for two-channel systems is considered. A parametrization of all decentralized stable factors is proposed. With the parametrization of all decentralized stable factors, the class of decentralized compensators is parametrized. The decentralized -controller design procedure is built upon the J-spectral factorization approach to -control. A class of decentralized suboptimal controllers satisfying the  norm bound is parametrized. A design procedure for decentralized suboptimal -controllers is suggested.},

keywords = {H_inf-controller},

pubstate = {published},

tppubtype = {article}

}

@article{ShimByunSeo99,

title = {Comments on "Observers for nonlinear systems in steady state},

author = {Hyungbo Shim and Jijoon Byun and Jin Heon Seo},

doi = {10.1109/9.751356},

issn = {0018-9286},

year  = {1999},

date = {1999-03-01},

journal = {IEEE Transactions on Automatic Control},

volume = {44},

number = {3},

pages = {587},

abstract = {In the above paper (Hunt and Verma, 1994), a nonlinear observer has been constructed when an initial error is sufficiently small. However, the proof of Lemma 2.2/sup /contains some errors. The authors provide a correct proof of Lemma 2.2 and show that the results still hold, but with reduced bounds of the initial error, states, and the new input.},

keywords = {nonlinear systems},

pubstate = {published},

tppubtype = {article}

}

@article{SonJoJinSeo99,

title = {Singular nonlinear H_inf control with finite time horizon},

author = {Young Ik Son and Nam Hoon Jo and J. Jin and Jin Heon Seo},

year  = {1999},

date = {1999-01-01},

journal = {Journal of Electrical Engineering and Information Science},

volume = {4},

number = {443},

pages = {291-297},

keywords = {Singular nonlinear},

pubstate = {published},

tppubtype = {article}

}

@article{LeeKongSeo97,

title = {Observers for bilinear systems, application to superheater temperature control},

author = {Sang Hyuk Lee and Jaesop Kong and Jin Heon Seo},

doi = {10.1016/S0967-0661(97)00029-4},

issn = {0967-0661},

year  = {1997},

date = {1997-04-01},

journal = {Control Engineering Practice},

volume = {5},

number = {4},

pages = {493-506},

abstract = {This paper considers the problem of controlling the steam temperature of a superheater with a desuperheater. Since the metal temperature is usually not available for measurement, it is regarded here as an unknown input, and a bilinear unknown input observer is designed. A sufficient condition for the asymptotic stability of the proposed observer is derived, and the design of a state feedback controller is based on the proposed observer. Computer simulations show that the estimated value follows the superheater steam temperature under the variation of the external inputs, and that the outlet steam temperature is properly maintained, and a comparision with a PI controller is made.},

keywords = {Bilinear systems},

pubstate = {published},

tppubtype = {article}

}

@article{JooSeo97,

title = {Design and Analysis of the Nonlinear Feedback Linearzing Control for an Electro-Magnetic Suspension System},

author = {SungJun Joo and Jin Heon Seo},

doi = {10.1109/87.553672},

issn = {1063-6536},

year  = {1997},

date = {1997-01-01},

journal = {IEEE Transactions on Control Systems Technology},

volume = {5},

number = {1},

pages = {135-144},

abstract = {This paper presents some results on the robust stabilization of a class of feedback linearizable nonlinear single-input/single-output (SISO) systems exhibiting parametric uncertainty. We characterize a class of nonlinear systems with bounded uncertain parameters which can be transformed into a linear interval matrix robustness problem. We also present some analysis and implementation of nonlinear feedback linearizing control for an electromagnetic suspension (EMS) system. We show that the EMS system is nonlinear feedback linearizable and satisfies the proposed condition, and hence that the proposed nonlinear feedback controller for an EMS system is robust against mass parameter perturbation and force disturbance. Some tests are performed for making an experimental comparison between feedback linearizing control and classical state feedback control using linearization by small perturbation analysis.},

keywords = {Linear feedback control system},

pubstate = {published},

tppubtype = {article}

}

@article{KongSeo96,

title = {Graph-theoretic characterization of fixed modes in frequency domain},

author = {Jaesop Kong and Jin Heon Seo},

doi = {10.1016/0005-1098(96)00041-6},

issn = {0005-1098},

year  = {1996},

date = {1996-07-01},

journal = {Automatica},

volume = {32},

number = {7},

pages = {1057-1060},

abstract = {We examine a characterization of fixed modes in a frequency-domain framework based on the graphical representation of systems with multiple poles. We present a graph-theoretic characterization of the characteristic polynomials of closed-loop systems under arbitrary structural constraints. Based on this characterization, fixed modes are characterized using the weight products of 1-factors of the weighted directed graphs associated with closed-loop systems. It is also shown that the well-known characterization of fixed modes in terms of transmission zeros can be derived from the proposed graph-theoretic characterization.},

keywords = {Decentralized stabilization},

pubstate = {published},

tppubtype = {article}

}

@article{Seo96,

title = {A frequency domain method for decentralized stabilization based on quasi-block diagonal dominance},

author = {Jin Heon Seo},

doi = {10.1080/00207179608921616},

issn = {0020-7179},

year  = {1996},

date = {1996-01-01},

journal = {International Journal of Control},

volume = {64},

number = {1},

pages = {41-59},

abstract = {In this paper, decentralized stabilization of interconnected systems based on quasi-block diagonal dominance of transfer function matrices has been examined. Some previous results are refined and extended to the case where diagonal blocks are not necessarily square. It has been shown that the refined stability result leads to a necessary and sufficient condition for robust decentralized stability for a class of additively perturbed interconnected systems. Some design considerations for decentralized controllers are discussed.},

keywords = {quasi-block},

pubstate = {published},

tppubtype = {article}

}

@article{YuSeo96,

title = {Maximum a posteriori CFAR Detector for weibull clutter},

author = {Kyung Tak Yu and Jin Heon Seo},

url = {http://www.riss.kr/search/detail/DetailView.do?p_mat_type=be54d9b8bc7cdb09&control_no=727bc0bfa4a1444d},

year  = {1996},

date = {1996-01-01},

journal = {Journal of the Korean Institute of Electrical Engineers},

volume = {9},

number = {4},

pages = {221-228},

keywords = {weibull clutter},

pubstate = {published},

tppubtype = {article}

}

@article{ParkSeoLee95,

title = {Tracking using the Variable Dimension Filter with Input Estimation},

author = {Yong Hwan Park and Jin Heon Seo and Jang Gyu Lee},

doi = {10.1109/7.366321},

issn = {0018-9251},

year  = {1995},

date = {1995-01-01},

journal = {IEEE Transactions on Aerospace and Electronic Systems},

volume = {31},

number = {1},

pages = {399-408},

abstract = {An improved method for tracking a maneuvering target is proposed. The proposed tracking filter is constructed by combining the recursive formulation of the input estimation approach with the variable-dimension filtering approach. In the proposed approach, the filter also provides the estimate of time instant at which a target starts to maneuver, when a target maneuver is detected. Using this estimated starting time of the maneuver, the maneuver input is also estimated and the tracking system changes to the maneuvering model. The computational load of the proposed procedure is comparable to that of the input estimation approach. Simulations are performed to demonstrate the efficiency of the proposed tracking filter, and comparisons with the interacting multiple model (IMM) filter, the input estimation filter and the variable-dimension filter are made.},

keywords = {Target tracking},

pubstate = {published},

tppubtype = {article}

}

@article{Seo94,

title = {Observers for Infinite Dimensional Systems with Unknown Input Disturbances},

author = {Jin Heon Seo},

year  = {1994},

date = {1994-01-01},

journal = {Control-Theory and Advanced Technology},

volume = {10},

number = {4},

pages = {815-830},

keywords = {Disturbances},

pubstate = {published},

tppubtype = {article}

}

@article{EmreTaiSeo90,

title = {Transfer Matrices, Reliazation, and Control of Continuous-Time Linear Time-Varying Systems via Polynomial Fractional Representations},

author = {Erol Emre and Heng-Ming Tai and Jin Heon Seo},

doi = {10.1016/0024-3795(90)90311-Y},

issn = {0024-3795},

year  = {1990},

date = {1990-01-01},

journal = {Linear Algebra and its Applications},

volume = {141},

pages = {79-104},

abstract = {An algebraic theory of transfer matrices, fractional representations, and control for linear continuous-time time-varying systems based on the realization theory of input-output maps is given. It is shown for the first time that the realization of such systems specified by an abstract input-output map (as a module homomorphism over noncommutative polynomial rings) can be established using an abstract Kalman input-output map defined over a ring of skew polynomials with time-varying coefficients. It is shown that, in fact, transfer matrices can be defined as formal power},

keywords = {LZNEAR ALGEBRA},

pubstate = {published},

tppubtype = {article}

}

@article{EmreSeo89,

title = {An Extended Unifying Approach to Multi-Target Tracking},

author = {Erol Emre and Jin Heon Seo},

issn = {0018-9251},

year  = {1989},

date = {1989-01-01},

journal = {IEEE Transactions on Aerospace and Electronic Systems},

volume = {25},

number = {4},

pages = {520-528},

keywords = {Multi-Target Tracking},

pubstate = {published},

tppubtype = {article}

}

@article{Seo89b,

title = {Stability and Stabilizability of Stochastic Evolution Equations on Hilbert Spaces},

author = {Jin Heon Seo},

isbn = {0020-7179},

year  = {1989},

date = {1989-01-01},

journal = {International Journal of Control},

volume = {50},

number = {3},

pages = {773-794},

keywords = {Stability},

pubstate = {published},

tppubtype = {article}

}

@article{SeoMazumdar88,

title = {On the innovations problem in finitely additive white noise approach to nonlinear filtering},

author = {Jin Heon Seo and Ravi R. Mazumdar},

doi = {10.1007/BFb0009058},

issn = {978-3-540-17575-9},

year  = {1988},

date = {1988-01-01},

journal = {Integration and Differential Equations},

volume = {1},

number = {2},

pages = {231-239},

abstract = {Consider an observed process which consists of a stochastic signal process with additive Gaussian white noise in the sense of Balakrishnan. Under the assumption that E exp δ∥s∥T/2 < ∞, δ > 0, where St is the signal process, and St is independent of the noise, it is shown that there exists a bijective causal mapping from the observation space to the innovations space. This shows that the innovations equivalence conjecture of Kailath holds for the finitely additive white noise non-linear filtering problem in this case.},

keywords = {nonlinear filtering},

pubstate = {published},

tppubtype = {article}

}

@article{EmreSeo88,

title = {A Realization Theoretic Solution of Two Analytic Matrix Equations with Application to Stabilization of Infinite Dimensional Systems},

author = {Erol Emre and Jin Heon Seo},

issn = {0020-7179},

year  = {1988},

date = {1988-01-01},

journal = {International Journal of Control},

volume = {48},

number = {53},

pages = {2011-2032},

keywords = {Infinite Dimensional Systems},

pubstate = {published},

tppubtype = {article}

}

@article{Behera20,

title = {Robust feedback stabilization using high-gain observer via event triggering},

author = {Abhisek K. Hehera/ Hyungbo Shim},

doi = {https://doi.org/10.1002/rnc.4868},

issn = {1049-8923},

journal = {International Journal of Robust and Nonlinear Control},

volume = {30},

number = {5},

pages = {2097-2112},

abstract = {In this article, the problem of robust output feedback stabilization of single-input single-output nonlinear systems is studied in the event-triggering framework. In this work, an event-triggered output feedback law based on a high-gain observer is constructed, which guarantees the stability of closed-loop system. First, the high-gain observer with a triggering scheme is designed to estimate the plant state in the presence of external disturbances subject to any satisfactory accuracy of the estimation error. The observer-based triggering mechanism decides the transmission of plant output to the observer by observing a certain event condition. Similarly, another triggering mechanism is designed using the estimated state of observer that triggers the control signal to be updated only when it is satisfied. Under this proposed event-triggering framework, the stability of closed-loop system is then analyzed. Here, we provide the simplified design technique, in which the high-gain parameter and the triggering thresholds can be selected independently to achieve any desired bound for the plant trajectory. The results are finally demonstrated through simulation of a numerical example.},

keywords = {Event-triggered control, Output feedback, Robust stabilization},

pubstate = {published},

tppubtype = {article}

}

@article{,

title = {Distributed Dynamic Quantile Solver With Plug-and-Play Operation},

author = {Jeong Mo Seong/Jeong Woo Kim/Seungjoon Lee/Hyungbo Shim},

issn = {2169-3536},

journal = {IEEE Access},

volume = {9},

pages = {165517-165525},

abstract = {https://ieeexplore.ieee.org/document/9646895},

keywords = {},

pubstate = {published},

tppubtype = {article}

}