- Nonlinear Dynamics and Pattern Formation
- Chaos control and synchronization
- Iterative Learning Control Systems
- Quantum chaos and dynamical systems
- Advanced Combustion Engine Technologies
- Adaptive Control of Nonlinear Systems
- Control Systems in Engineering
- Gene Regulatory Network Analysis
- Extremum Seeking Control Systems
- Advanced Control Systems Optimization
- Advanced Control Systems Design
- Advanced DC-DC Converters
- Neural Networks Stability and Synchronization
- Control Systems and Identification
- Multilevel Inverters and Converters
- Stability and Control of Uncertain Systems
- Stability and Controllability of Differential Equations
- Real-time simulation and control systems
- Fault Detection and Control Systems
- Combustion and flame dynamics
- Mathematical Dynamics and Fractals
- Complex Network Analysis Techniques
- Advanced Mathematical Modeling in Engineering
- Target Tracking and Data Fusion in Sensor Networks
- Semiconductor Quantum Structures and Devices
Utsunomiya University
2015-2025
Tokyo Institute of Technology
2012-2014
Nagoya University
1988-2014
Japan Science and Technology Agency
2011-2014
Tokyo Metropolitan University
2014
Kyushu Institute of Technology
1999
The University of Queensland
1996
Nippon Electric Glass (Japan)
1982
A stabilization problem of singularly perturbed linear constant systems using a state feedback is analyzed. It shown that the stabilizability two subsystems can assure original system. The stabilizing controller for system also given.
In this paper, based on the node knock-out procedure, for a networked system consisting of identical multi-dimensional subsystems in which network structure is unknown and number input/output nodes less than that subsystems, we propose novel method to identify strength interaction between even if information other not unknown.
We try to stabilize steady solutions of a physical model described by wave equations with nonlinear boundary conditions. This system is distributed parameter in which ideal turbulence, introduced Sharkovsky et al., occurs. Although the behavior quite intricate both time and space, using d'Alembert's solution, analysis dynamic characteristics can be reduced that finite-dimensional difference equation. In this report, based on analytical method we design control laws (equilibrium periodic...
This report is concerned with discrete-time systems that are derived for continuous-time LTI by the pulse-width-modulation (PWM) -hold. The input term of difference equation describing system a nonlinear map control parameter PWM signal, i.e., duty ratio. It shown two-dimensional systems, nonlinearity PWM-hold can be exactly compensated varying center each rectangular pulse-waves as well its
To achieve high-speed and high-precision control, an accurate plant model is required. Since the parameters may vary by environmental change so on, it desirable to identify during positioning control. In system identification, a pseudo random signal in general used fully excite dynamics of plant. Therefore, when input-output data obtained from control used, identification accuracy be degraded. this study, we propose methods improve introducing appropriate pre-processes for data. Further,...
Summary We derive instability criteria for Lur'e systems with sector‐bounded nonlinearities and uncertain external signals. First, we define absolute of an equilibrium condition a fixed point in terms linear matrix inequality, which is analogous to the well‐known circle stability criterion. Then, extended parametric condition, applicable test system whose location affected by Finally, show that proposed analysis method useful through oscillation genetic network model. Copyright © 2014 John...
An exact linearization method using static input transformations is proposed for third-order continuous-time systems with pulse-width-modulation-type inputs whose eigenvalues are real and distinct. In this method, two rectangular waves located in each control interval, their rising/falling timings treated as the parameters. This paper demonstrates that image of nonlinear map contains a suitable linear map, which means some exist linearization.
By using the potential probe method, turn-on action of three junctions a thyristor associated with plasma spreading was investigated as function anode current density J <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">a</inf> . increasing , width transient region between ON and OFF increased in p-base layer but decreased n-base layer. The build up excess carriers due to lateral field region, while it mainly diffusion from region.
For three-dimensional LTI systems with PWM inputs whose eigenvalues are real and distinct, an exact linearization method using static input transformations is proposed. In this method, two rectangular waves located in each control period, their rising/falling timings treated as the parameters. This paper shows that image of nonlinear map contains a suitable linear map, which means some for exists.
We try to synchronize physical models described by wave equations with nonlinear boundary conditions. These systems are distributed parameter in which ideal turbulence, introduced Sharkovsky et al., occurs. The behavior of such can be quite intricate both time and space. However, using the d'Alembert's solution, analysis dynamic characteristics reduced that a finite-dimensional difference equation. In this report, based on analytical method we design control law stabilize an equilibrium...
This paper is concerned with the behavior of second-order continuous-time LTI systems pulse-widthmodulation (PWM) input on sampling instants.The term difference equation describing state transition a nonlinear map control parameter rectangular wave, i.e., duty ratio.It shown that nonlinearity can be exactly compensated by varying center each wave as well its ratio.
In many positioning control systems, the completion of phase must be determined correctly in order to initiate start next task. However, this is not always easy because output may exceed allowable error bound. To resolve problem, we proposed a support vector machine (SVM-) based method, and verified effectiveness method by performing simulations experiments using simple plant models. SVMs, selection kernel parameters critical performance SVMs; however, used only polynomial previous study....
In this paper, we consider the controllability and observability of a networked system linear hyperbolic partial differential equations with coupled boundary conditions. Using method characteristics, characterize them by controllability/observability discrete-time which is defined on boundaries PDE system, has low-dimension, hence analysis easy for. We also show effectiveness our approach using an simple example.