Vibration Isolation Control with Feedforward Link using H.INF. Control Theory.
Sungkook Kang,Kazuo Yoshida +1 more
TLDR
In this article, the authors presented methods for design of frequency cost and robust control by applying the theory of H∞ control in stochastic optimal control with a feed forward link.Abstract:
In stochastic optimal control with a feedforward link, there are two problems, one is the difficulty of design by frequency-shaped cost functionals, the other is the problem that the level of the frequency response increases beyond the frequency range of an assumed disturbance dynamics. In this study, to overcome these defects of the stochastic vibration control, methods for design of frequency cost and robust control are presented by applying the theory of H∞ control. In the numerical calculation using a single-degree-of-freedom system, the usefulness of the presented method using the H∞ control was verified.read more
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Journal ArticleDOI
Semi-active base isolation for a building structure
Kazuo Yoshida,Tadahiro Fujio +1 more
TL;DR: In this paper, the optimal control theory is applied to a bilinear system using feedforward information of disturbance, and the Bilinear optimal control law is derived, and an actual building which is modelled by a 10 degree-of-freedom structure model with base isolation using a semi-active oil damper.
Proceedings ArticleDOI
Bilinear disturbance-accommodating optimal control of semi-active suspension for automobiles
K. Yoshida,B. Okamoto +1 more
TL;DR: In this article, a 1/2 body model with 4-DOF is used to investigate the performance of a semi-active suspension for ride comfort in a car with active and passive control, and it showed better performance than the passive control with respect to vertical acceleration and pitch angular acceleration.
Proceedings ArticleDOI
Semi-active base isolation control of a building using variable oil damper
K. Yoshida,T. Fujio +1 more
Journal ArticleDOI
Use of active control algorithm for optimal design of base-isolated buildings against earthquakes
TL;DR: This study presents a new design method that concurrently determines the stiffness and damping coefficient in a base isolation system and provides a numerical example to validate the optimal design of base isolation systems.
Journal ArticleDOI
Integrated Controller Design for Automotive Semi-Active Suspension Considering Vehicle Behavior with Steering Input
TL;DR: In this paper, a controller design for semi-active suspension taking into consideration the most sensitive frequency range of the human body and vehicle behavior when steering is proposed by separating the control range in terms of the frequency domain, where the frequency weighting in controlled variables is used.