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Author: search.filters.author.Ouchi, Shigeto

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    Discrete-time designs for load swing control of an overhead crane
    (2011-02-01)
    Ukakimaparn, Prapart
    ;
    Pannil, Pittaya
    ;
    Smerpitak, Krit
    ;
    Tirasesth, Kitti
    ;
    Trisuwannawat, Thanit
    This paper proposed a controller design method for controlling the load swing of an overhead crane. By the addition of the quadratic derivative of state variables term in the usual standard performance index for Discrete Linear Quadratic Gaussian (DLQG) optimal control as an extra weighting to play the role in this task. The results revealed that the swing of the load can be decreased at numerous requirements with excellence. How to select the suitable weights for control is also suggested. © 2011 ISSN 2185-2766.
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    Self-tuning control for rotation type inverted pendulum using two kinds of adaptive controllers
    (2006-12-01)
    Hirata, Hiroshi
    ;
    Haga, Koji
    ;
    Anabuki, Masatoshi
    ;
    Ouchi, Shigeto
    ;
    Ratiroch-Anant, Phornsuk
    This paper presents the self-tuning control method for the rotation type inverted pendulum that the momentum of inertia of the pendulum part changes widely. The control system prepares two kinds of adaptive controllers, and the stabilization of inverted pendulum is achieved by separating the control mode to two stages. The rotational angle of the pendulum is stabilized by VSS (Variable Structure System) adaptive control method to unknown parameter system at the first stage, and whole basic parameters are simultaneously estimated in the parameter estimation system. After the eigenvalue of the inverted pendulum system converge sufficiently, the controller is changed to LQ (Linear Quadratic) control at the second stage. It is verified by the practical experiment that the proposed self-tuning strategy is very useful as one of the on-line tuning method © 2006 IEEE.
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    Adaptive controller design for anti-slip system of EV
    (2006-12-01)
    Ratiroch-Anant, Phornsuk
    ;
    Hirata, Hiroshi
    ;
    Anabuki, Masatoshi
    ;
    Ouchi, Shigeto
    The design strategy of adaptive controller for antislip system of EV (electric vehicle) is proposed. The proposed system is constructed by preparing both systems of disturbance observer and parameter estimation. The load variation of the tire slip is observed as the equivalent disturbance of motor system by employing the adaptive disturbance observer, and the vehicle speed is estimated. The tire slip is appropriately controlled by means of the feedback of the speed deviation between wheel speed and estimated vehicle speed. It is proved by the numerical simulations that the proposed methods provide satisfactory performance. Furthermore, the practical DC motor experiment set, which can give various slips, is constructed in order to investigate the effect of proposed anti-slip control system. It is verified that the proposed strategy is useful as one approach of anti-slip control. © 2006 IEEE.