An optimal tandem active-passive suspension system for road vehicles with minimum power consumption

Corriga, G.; Sanna, S.; Usai, G.

doi:10.1109/41.87589

Cited by 36 publications

(15 citation statements)

References 4 publications

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“…The road disturbance can be characterized in terms of its displacement power spectral density (PSD), in m 2 /(rad/m), which can be approximated to be [17]:…”

Section: B Random Road Forcingmentioning

confidence: 99%

Active Variable Geometry Suspension robust control for improved vehicle ride comfort and road holding

Cheng

Evangelou

Arana

et al. 2015

2015 American Control Conference (ACC)

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Abstract-This paper investigates the design of robust H∞ control for road vehicle Series Active Variable Geometry Suspension (SAVGS). The objective is to improve ride comfort and road holding, while guaranteeing operation inside existing physical constraints. The study utilizes a nonlinear quarter car model that represents accurately the vertical dynamics and geometry of one quarter of a high performance car with a double wishbone suspension. The control objective is to reduce the body vertical acceleration, tire deflection and suspension travel under the impact of road perturbations. Therefore, the selection of the weighting functions for a linear H∞ control, designed for the linearized quarter car, is based on these objectives. The proposed controller is then applied to the nonlinear quarter car model and investigated by nonlinear simulation for a range of road disturbance inputs. The results show that the designed controller when applied on the SAVGS is effective in improving the vehicle ride comfort and road holding.

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“…The road disturbance can be characterized in terms of its displacement power spectral density (PSD), in m 2 /(rad/m), which can be approximated to be [17]:…”

Section: B Random Road Forcingmentioning

confidence: 99%

Active Variable Geometry Suspension robust control for improved vehicle ride comfort and road holding

Cheng

Evangelou

Arana

et al. 2015

2015 American Control Conference (ACC)

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“…It is readily shown that the state variable mathematical model of the system under study is given by [3]…”

Section: Dynamical Model Of the Suspension Systemmentioning

confidence: 99%

“…The product is the power spectrum of the white noise. The signal x 0 (t), whose PSD is given by (11), may be obtained as the output of a linear filter expressed by the differential equation [3]…”

Section: Simulationmentioning

confidence: 99%

“…In some types of suspensions, but this case is not considered here, it may also be possible to control the elastic constant λ s of the spring. A semiactive suspension is a valid engineering solution -when it can reasonably approximate the performance of the active control -because it requires a low power controller that can be easily realized at a lower cost than that of a fully active one [3,8]. Note, however, that a semiactive system clearly lacks other important secondary advantages of the fully active one, namely the ability to resist downward static forces due to passenger and baggage loads and to control the altitude of the vehicle.…”

Section: Introductionmentioning

confidence: 99%

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Design of a Predictive Semiactive Suspension System

Giua

Melas

Seatzu

et al. 2004

Vehicle System Dynamics

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SUMMARYIn this paper we present an original design procedure for semiactive suspension systems. Firstly, we consider a target active control law that takes the form of a feedback control law. Secondly, we approximate the target law by controlling the damper coefficient f of the semiactive suspension. In particular, we examine two different kinds of shock absorbers: the first one uses magneto-rheological fluid instead of oil, while the second one is a solenoid valve damper. In both cases the nonlinear characteristics force-velocity of the damper are used to approximate the target law. To improve the efficiency of the proposed system, we take into account the updating frequency of the coefficient f and compute the expected value of f using a predictive procedure. We also address the problem of designing an asymptotic state observer that can be used not only to estimate the current state but also to predict the value that the state will take at the next sampling time.

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“…The common and main objective of combined suspensions is to reduce power demands and actuator size in terms of maximum forces requirements (see, for example, Corriga et al [3] and Guia et al [4]). Some work has been done in this direction for suspension systems in general, by supplementing the actuators with simple arrangements of springs and dampers, or even redesigning the system parameters to constitute the passive part of the suspension as in [2].…”

Section: Introductionmentioning

confidence: 99%

Novel mechatronic solutions incorporating inerters for railway vehicle vertical secondary suspensions

Matamoros-Sanchez

Goodall

2014

Vehicle System Dynamics

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Citation: MATAMOROROS-SANCHEZ, A. and GOODALL, R., 2015. Novel mechatronic solutions incorporating inerters for railway vehicle vertical secondary suspensions. Vehicle System Dynamics, 53 (2), pp.113-136. This paper discusses the effects of inerter-based passive networks in the design of novel mechatronic solutions for improving the vertical performance of a bogied railway vehicle. Combinations of inerter-based structures and active suspensions comprise distinct novel mechatronic solutions for the vertical secondary suspension of the vehicle. The parameters of the active and passive parts of the overall configuration are optimised so that a synergy arises to enhance the vehicle vertical performance and simplify common mechatronic suspension design conflicts. The study is performed by combining inerter-based suspensions with well established active control (output-based and model-based) strategies for ride quality enhancement. Also, a novel nonlinear control strategy, here called 'Adaptive Stiffness', is incorporated for suspension deflection regulation to complement the well known local implementation of skyhook damping. This would complete a significant set of control strategies to produce general conclusions. The vehicle performance is assessed through the vertical accelerations of the vehicle body as an initial investigation. Attained results show the potential of the inerter concept for innovating mechatronic technologies to achieve substantial improvements in railway vehicle vertical ride quality with reduced actuator force.

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An optimal tandem active-passive suspension system for road vehicles with minimum power consumption

Cited by 36 publications

References 4 publications

Active Variable Geometry Suspension robust control for improved vehicle ride comfort and road holding

Active Variable Geometry Suspension robust control for improved vehicle ride comfort and road holding

Design of a Predictive Semiactive Suspension System

Novel mechatronic solutions incorporating inerters for railway vehicle vertical secondary suspensions

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