[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

In this paper we study a smoothing problem for linear continuous-time systems considering utilization of all information of increasing observation. In this paper we do not focus on fixed-lag smoothing problem, but do focus the problem in which the observation interval is extended from the starting point of the observation.

View full abstract

[in Japanese]

View full abstract

In the vehicle engine, the amount of 20 seconds after cold starts of HC (unburnt hydrocarbon) exhaust accounts for about 50% of the mode driving. This air/fuel ratio (A/F) control at the period is an open loop and it varies widely. In this paper, it was shown to be able to decrease the HC difference by controlling with A/F sensor made by the neural net work.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

This paper deals with a simultaneous design of structural and reduced-order H-infinity control systems. In this paper, we propose an iterative approach to this control problem, which constructs an infeasible controller sequence approaching a feasible region. The feature of our approach is to be able to choose any controller variables as an initial point.

View full abstract

[in Japanese]

View full abstract

This paper proposes a method of tracking control based on model predictive controls. When model predicitve control are used for tracking control, some reference state and input trajectories are often employed. In this paper, we use, as the feference trajectories, state trajectories for perfect tracking, which we have characterized so far. The numerical examples show that quasi finite time tracking can be achieved even in the existing of disturbances and input constraints.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

In design of a networked control system, one has to require to handle dynamics of a control system itself, as well as some particular properties such as transmission delay, loss, and distortion. We have proposed a remote control technique for stabilizing constrained linear systems including communication links of the network, whose model is unknown. As far as the links never cut, the control technique can assure the stabilization of the remote control system. Furthermore, some experimental results are presented, where tracking control of a DC motor was performed over the Internet.

View full abstract

[in Japanese]

View full abstract

Conventional wireless communications have been developed aiming higher frequency efficiency, or higher speed, for a given bandwidth with acceptable average error rate. In many wireless controls, on the contrary, data to be sent is relatively small and high data rate is not required, however, the data has to arrive to its destination just-in-time with high reliability. Based on these differences, this presentation introduces the recent works on impacts of wireless technology for control systems, measure of reliability, and strategies for performance improvements.

View full abstract

Because of "low reliability of wireless," unfortunately, wireless information transmission technology has been rarely applied in the field of control. However, if cutting-edge wireless technology is applied to a system, it can be highly reliable enough to support control information transmission. This presentation discusses the potential of recent wireless information transmission technology.

View full abstract

This paper presents a method for automated human detection using fisheye lens camera. In our method, human is modeled as probabilistic templates of body silhouette and head-shoulder contour. The problem of human detection is formulated as maximum a posteriori (MAP) estimation using the template model. Experiments are conducted on indoor space where a fisheye lens camera is installed on the ceiling of crossing hallway. The feasibility and accuracy of our method is discussed through the experimental results.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

In this work, a design scheme of data-driven internal model controller is newly proposed, and the behavior of the proposed scheme is examined for nonlinear systems.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

This paper proposes a fault-tolerant control system design method against stuck actuator faults. The proposed fault-tolerant control(FTC) method is to design a reconfigurable controller by using a particle swarm optimization(PSO). A numerical example demonstrates its effectiveness.

View full abstract

We will propose an inventory control for periodic ordering systems using an optimal servo control with colored noise demand model.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

We propose a path control method with preview compensation on 3-dimensional space . The x-y-z coordinate system is converted into the system consists of forward vector and plain which estimates the path error. The effectiveness is confirmed by experimental studies.

View full abstract