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Jsae Review | 1999

Nonlinear H∞ control for semi-active suspension

Satoru Ohsaku; Tomomi Nakayama; Ichisei Kamimura; Yoshikazu Motozono

Abstract This paper describes the development of a damping control system for semi-active suspension which is based on nonlinear H ∞ control theory instead of conventional linear control theory. A two degrees of freedom system is used as the structure for the vehicle suspension model. Since the structure is bilinear, its not easy to design the controller. We designed the controller based on the Hamilton-Jacobi inequality by solving a linear Riccati equation. We were able to verify by simulation that nonlinear H ∞ control theory made it possible to control vehicle vibration optimally and smoothly.


Archive | 1999

Control system for resilient support mechanism such as vehicle suspension mechanism

Satoru Ohsaku; Ichisei Kamimura


Archive | 2002

Damping force control device and method

Satoru Ohsaku


Archive | 1997

Vehicle sprung- and unsprung-structure relative-velocity computing apparatus

Satoru Ohsaku; Yoshikazu Motozono; Hideo Nakai


Archive | 1996

Suspension system of automotive vehicle and electric control apparatus for the same

Hajime Kamimae; Hideo Inoue; Ichisei Kamimura; Satoru Ohsaku; Mitsunobu Hattori; Yasuhiko Mishio; Hiroyoshi Kojima


Archive | 2003

Apparatus and method for estimating a turning characteristic of a vehicle

Mitsutaka Tanimoto; Satoru Ohsaku


Archive | 1999

Sprung mass estimating apparatus

Satoru Ohsaku; Hideo Nakai


Archive | 2003

Apparatus for estimating a turning characteristic of a vehicle

Mitsutaka Tanimoto; Satoru Ohsaku


Transactions of the Japan Society of Mechanical Engineers. C | 1997

Design of Practical Observer for Semiactive Suspensions.

Hideo Nakai; Kazunori Yoshida; Satoru Ohsaku; Yoshikazu Motozono


Archive | 2001

***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***Damping force control device and method

Satoru Ohsaku

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