Robust H/sup ∞/-output feedback control of decoupled automobile active suspension systems

Hayakawa, Kenichi; Matsumoto, Koji; Yamashita, Masashi; Suzuki, Yusuke; Fujimori, K.; Kimura, Hidenori

doi:10.1109/9.746274

Cited by 72 publications

(11 citation statements)

References 8 publications

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“…It was exhibited [91] that a superior performance can be achieved by simply adding the skyhook (or 'absolute') damping to the 'decoupled' active suspension design. This approach is further verified in [92] through mathematical manipulation and state space transformation where the heave and pitch modes and corresponding disturbances are decoupled. Important aspects of state estimation are addressed in [93,94].…”

Section: Other Approaches and Considerationsmentioning

confidence: 99%

State of the art survey: active and semi-active suspension control

Tseng

Hrovat

2015

Vehicle System Dynamics

284

130

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This survey paper aims to provide some insight into the design of suspension control system within the context of existing literature and share observations on current hardware implementation of active and semi-active suspension systems. It reviews the performance envelop of active, semi-active, and passive suspensions with a focus on linear quadratic-based optimisation including a specific example. The paper further discusses various design aspects including other design techniques, the decoupling of load and road disturbances, the decoupling of pitch and heave modes, the use of an inerter as an additional design element, and the application of preview. Various production and near production suspension systems were examined and described according to the features they offer, including self-levelling, variable damping, variable geometry, and anti-roll damping and stiffness. The lessons learned from these analytical insights and related hardware implementations are valuable and can be applied towards future active or semi-active suspension design.

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Section: Other Approaches and Considerationsmentioning

confidence: 99%

State of the art survey: active and semi-active suspension control

Tseng

Hrovat

2015

Vehicle System Dynamics

284

130

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“…Optimal tuning techniques of decentralized velocity feedback control loops with constant gain are suggested [6], [7]. Adapting gain [8] and extremum seeking control [9] techniques are also investigated. A survey of these approaches was provided in [10].…”

Section: Introductionmentioning

confidence: 99%

Switching Gains for Semiactive Damping via Nonconvex Lyapunov Functions

Blanchini

Colaneri

Casagrande

et al. 2014

IEEE Trans. Contr. Syst. Technol.

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Gain switching is proven to be an effective technique for semiactive damping of vibrating structures. Typically, switching control is based on convex, in particular quadratic, Lyapunov functions, which impose conservative solutions. In this brief we propose a switching technique based on ad hoc nonconvex Lyapunov functions, recently introduced in the literature. Remarkable advantages can be shown by considering well-known criteria such as L 2 and H ∞ . We propose a switching strategy based on the minimum of quadratic Lyapunov functions and we show that such a strategy outperforms the effect achieved with the optimal constant gain. Explicit bounds can be assured. The scheme is amenable for implementation as very simple tools such as Lyapunov and Riccati equations are involved. Results are also validated by simulations of a realistic building structure under seismic action, based on the recorded data of the El Centro earthquake.

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“…But this leads to no damping of the unsprung mass and unacceptable tire deflection and hence a degradation in ride safety. To cope with the indispensable trade-off between these requirements along with road profile, many active suspension approaches have been proposed, ranging from LQ-based designs to adaptive nonlinear control, see, e.g., [1] and references therein and [2]- [6]. All these designs have improved the performance of the system to a considerable extent.…”

Section: Introductionmentioning

confidence: 99%

Output feedback constrained H<inf>∞</inf> control of active vehicle suspensions

Akbari

Geravand

Lohmann

2010

2010 2nd International Conference on Advanced Computer Control

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This paper develops an LMI-based solution for outputfeedback constrained H∞ control design, and considers it for active vehicle suspension system. A quarter car model, which captures many features of real structures, is used in this study. To take more general road disturbances than white noise into account in the design procedure, H∞ performance measure is used to judge ride comfort, ride safety and control effort. To care for time domain constraints, pertaining to suspension working space limitations, the concept of reachable sets and state space ellipsoids is utilized. LMI formulation of the problem makes it possible to ensure desired transient response by imposing appropriate pole location constraints. Numerical simulations have been carried out to compare the designed controller with a state feedback constrained one.

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Robust H/sup ∞/-output feedback control of decoupled automobile active suspension systems

Cited by 72 publications

References 8 publications

State of the art survey: active and semi-active suspension control

State of the art survey: active and semi-active suspension control

Switching Gains for Semiactive Damping via Nonconvex Lyapunov Functions

Output feedback constrained H<inf>∞</inf> control of active vehicle suspensions

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Robust H/sup ∞/-output feedback control of decoupled automobile active suspension systems

Cited by 72 publications

References 8 publications

State of the art survey: active and semi-active suspension control

State of the art survey: active and semi-active suspension control

Switching Gains for Semiactive Damping via Nonconvex Lyapunov Functions

Output feedback constrained H<inf>&#x221E;</inf> control of active vehicle suspensions

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Product

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Output feedback constrained H<inf>∞</inf> control of active vehicle suspensions