Application of H∞ control to active suspension systems

Yamashita, Masashi; Fujimori, K.; Hayakawa, Kenichi; Kimura, Hidenori

doi:10.1016/0005-1098(94)90074-4

Cited by 154 publications

(13 citation statements)

References 2 publications

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“…The pulsations of Mira variables help drive very strong winds from the surfaces of these stars. Mass loss rate estimates for Mira A itself generally fall in the range 4× 10 −8 to 4× 10 −7 M ⊙ yr −1 (Yamashita & Maehara 1978;Knapp 1985;Bowers & Knapp 1988;Planesas et al 1990;Knapp et al 1998;Ryde & Schöier 2001). Mira A has a companion star, Mira B, which is located 0.6 ′′ away (Karovska et al 1997), corresponding to a projected distance of about 70 AU at its distance of 128 ± 18 pc (Perryman et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Molecular Hydrogen Emission Lines inFar Ultraviolet Spectroscopic ExplorerObservations of Mira B

Wood

Karovska

2004

ApJ

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We present new Far Ultraviolet Spectroscopic Explorer (FUSE) observations of Mira A's wind-accreting companion star, Mira B. We find that the strongest lines in the FUSE spectrum are H 2 lines fluoresced by H I Lyα. A previously analyzed Hubble Space Telescope (HST) spectrum also shows numerous Lyα-fluoresced H 2 lines. The HST lines are all Lyman band lines, while the FUSE H 2 lines are mostly Werner band lines, many of them never before identified in an astrophysical spectrum. We combine the FUSE and HST data to refine estimates of the physical properties of the emitting H 2 gas. We find that the emission can be reproduced by an H 2 layer with a temperature and column density of T = 3900 K and log N (H 2 ) = 17.1, respectively. Another similarity between the HST and FUSE data, besides the prevalence of H 2 emission, is the surprising weakness of the continuum and high temperature emission lines, suggesting that accretion onto Mira B has weakened dramatically. The UV fluxes observed by HST on 1999 August 2 were previously reported to be over an order of magnitude lower than those observed by HST and the International Ultraviolet Explorer (IUE) from 1979-1995. Analysis of the FUSE data reveals that Mira B was still in a similarly low state on 2001 November 22.

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Section: Introductionmentioning

confidence: 99%

Molecular Hydrogen Emission Lines inFar Ultraviolet Spectroscopic ExplorerObservations of Mira B

Wood

Karovska

2004

ApJ

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“…His contributions to the solution of the output feedback pole assignment [1], to design theory [2], and to H 1 -control [3][4][5] are deeply influential works which have shaped and continue to shape scientific enquiry in those areas. His understanding of the importance of the application of control design to real industrial problems and the relevance of his own contributions in this direction have paved the way to several successful attempts of bringing mathematically sophisticated techniques to bear on real-world problems [6,7]. Recently, he has shifted his scientific efforts towards studying biological problems from a control perspective, with special emphasis on motor control.…”

Section: Book Reviewsmentioning

confidence: 96%

Control and modeling of complex systems: cybernetics in the 21st century, K. Hashimoto, Y. Oishi and Y. Yamamoto (eds), Festschrift in Honor of Hidenori Kimura on the Occasion of his 60th Birthday, Birkhäuser, Boston, 2003, 337 Pages, Price $82.95, ISBN 0‐8176‐4325‐7

Rapisarda

2004

Intl J Robust & Nonlinear

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“…In the method, the uncertainties are represented by a diagonal structure with full or scalar complex blocks. In the method frequency dependent weighting functions are applied to both the performances and the uncertainties in such a way that the appropriate loop shape is achieved, see [3], [6], [14].…”

Section: Introductionmentioning

confidence: 99%

Uncertainty modeling and control design of variable-geometry suspension

Németh

Gáspár

2011

2011 IEEE 12th International Symposium on Computational Intelligence and Informatics (CINTI)

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The paper proposes the modeling and control design of a variable-geometry suspension system. The goal of the modification of wheel camber is to track road trajectory and enhance the lateral stability of the vehicle. The purpose of the system is to assist the driver to perform various maneuvers by influencing the camber angles of the rear wheels. First a tyre model and a dynamical model of the suspension are described. Second, the uncertainties of the system, which are considered at the control design of a variable-geometry suspension are formalized. The control design is based on the robust H ∞/μ method, which meets the performance specifications and guarantees robustness against model uncertainties.

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Application of H∞ control to active suspension systems

Cited by 154 publications

References 2 publications

Molecular Hydrogen Emission Lines inFar Ultraviolet Spectroscopic ExplorerObservations of Mira B

Molecular Hydrogen Emission Lines inFar Ultraviolet Spectroscopic ExplorerObservations of Mira B

Control and modeling of complex systems: cybernetics in the 21st century, K. Hashimoto, Y. Oishi and Y. Yamamoto (eds), Festschrift in Honor of Hidenori Kimura on the Occasion of his 60th Birthday, Birkhäuser, Boston, 2003, 337 Pages, Price $82.95, ISBN 0‐8176‐4325‐7

Uncertainty modeling and control design of variable-geometry suspension

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