Research



Research Statement of Kwang-Ki K. Kim [PDF]

   

  
  RESEARCH AREAS (THEORY)

 


http://publish.illinois.edu/kwangkikim/files/2012/12/

Robust Control Theory


In robust control framework, system properties such as stability and performances need to be guaranteed
for any possible realization of uncertainties in a set-valued system model.

http://publish.illinois.edu/kwangkikim/files/2012/12/interconnected_system.jpg


Analysis and Synthetic Design of Large-scale Interconnected/Networked Systems

For analysis and controller design of large-scale interconnected/networked systems, one needs mathematical tools to exploit the interconnection/network structures.

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Semidefinite Programming Relaxation for Nonconvex Programs
 

Nonconvexity generally results in NP-hard problems, which makes the associated large-scale problems intractable.

http://publish.illinois.edu/kwangkikim/files/2012/12/RobustOpt.jpg


Robust Optimization

The presence of uncertain data in optimization can significantly degrade performance of an nominal optimal solution.
To guarantee robustness of an optimal solution, one needs to take the uncertainty into account in the stage of problem formulation.

http://publish.illinois.edu/kwangkikim/files/2012/12/approx_UQ.jpg



Uncertainty Quantification of Dynamical Systems: Data-driven and Model-based Robust Analysis and Design

Analyzing and quantifying uncertainty propagation through a dynamical system model have been important research.

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Statistical Decision Theory: (Approximate) Stochastic Programming

The decision principles of stochastic programming have a statistical background.
The science of decision making under stochastic uncertainty has been extensively studied by many different research communities.

http://publish.illinois.edu/kwangkikim/files/2012/12/SysId.jpg


System Identification

In systems and control theory, working with a system model is indispensable and
obtaining a proper system model for the true process play a crucial role for analysis and synthesis problems.

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Robust and Adaptive Optimal Experiment Design for System Identification

For system identification or parameter estimation, it is important to analyze how informative the measurement/observable data are and
generate sufficiently informative sets of data for rapid and accurate convergence of identification or estimation procedure.

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Fault Detection and Diagnosis Algorithms, and Robust Fault Tolerant Control

During operation of a process, some of the unit might be malfunctioning.
When a fault/failure of a system component occurs, one needs tools to designate its location and remedy it for the system to recover.


Robust Approximate Dynamic Programming


In principle, the optimal control problem is solved once the optimal cost-to-go function is known (or estimated) and
the DP formulation of dynamic optimization for solving multi-stage problems provides a convenient way to solve via an equivalent single-stage optimization.


Deterministic and Stochastic Reachability and Viability Analysis


Characterizing the reachability sets of deterministic and stochastic dynamical systems and indispensable in systems and control science and engineering.


Stochastic Model Predictive Control


Model predictive control has been powerful tools in many application problems.


Validation & Verification of Control Algorithms: Finding Hidden Falsification

Complex mathematics might mask falisfication of a control method. A natural way to verify and validate a given control method is to find a counter example.
   

 

 

  
  RESEARCH AREAS (APPLICATIONS)

 


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Control of Chemical Reaction Process

Chemical reactions can be represented as kinetic models and/or master equations.
   

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Systems Biology

Understanding how biological systems maintain proper functions is very important.
   




Distributed Control of Power Systems





Quality by Design: Less Conservative Search for Design Space





Financial Engineering: Pricing Mechanism