Performance analysis and simulation of a new industrial semi-active damper

Aubouet, Sébastien; Sename, Olivier; Talon, Benjamin; Poussot-Vassal, Charles; Dugard, Luc

doi:10.3182/20080706-5-kr-1001.00786

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…Here the performances obtained are analysed using the pseudo-Bode diagrams presented on Figure 9. The methodology to compute these diagrams is detailed in [3], [11].…”

Section: Simulation Resultsmentioning

confidence: 99%

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Semi-active H<inf>∞</inf> / LPV control for an industrial hydraulic damper

Aubouet¹,

Dugard

Sename

et al. 2009

2009 European Control Conference (ECC)

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In this paper, a new control strategy is developed to improve comfort and roadholding of a ground vehicle equipped with an industrial damper. This damper can be controlled by means of a small servomechanism which adjusts the damping rate. The main controller is a linear parameter varying (LP V) static state-feedback controller synthesized in the H∞/LP V framework to compute the required damping force that minimizes the movements of the vehicle's body on one hand, and the deflection of the tire on the other hand. A scheduling strategy is developed on the basis of the real damper behavior to improve performances without using active damping forces which would be useless for such a semiactive system. Here the controller takes the constraints of the technology and the damper behavior into account and is easy to implement in an industrial application. The control of the servomechanism is provided by a simple PID controller that ensures that the damper provides the required force. The performances are illustrated on an identified nonlinear model of the damper embedded in a quarter car model. The comfort and roadholding level of the semi-active suspension are studied using some adapted criteria and compared with the passive ones. Some simulations emphasize the comfort and roadholding improvements of this control stategy that will be tested by SOBEN on a testing car in the near future.

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“…Here the performances obtained are analysed using the pseudo-Bode diagrams presented on Figure 9. The methodology to compute these diagrams is detailed in [3], [11].…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Here the objective is to minimize the four transfer functionsz s /z r , z s /z r (comfort), z us /z r and z def /z r (roadholding) at given frequencies. More details are given in a previous work [3]. LP V techniques can be used to schedule the controller according to measured varying parameters.…”

Section: H ∞ /Lp V Force Controllermentioning

confidence: 99%

Semi-active H<inf>∞</inf> / LPV control for an industrial hydraulic damper

Aubouet¹,

Dugard

Sename

et al. 2009

2009 European Control Conference (ECC)

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“…), passing through classic cars and duty-vehicles such as trucks, ambulances, fire-trucks, etc. [10][11][12][13][14][15][16][17][18] It should be borne in mind that the main semi-active control challenge lies in the dissipative constraint of the damper control and not in the description of the non-linear behavior. 19 Hence, semi-active suspensions are implemented by the use of controllable shock absorbers.…”

Section: Semi-active Suspensionsmentioning

confidence: 99%

An investigation on semi-active suspension damper and control strategies for vehicle ride comfort and road holding

Balamurugan

Jancirani

2012

Proceedings of the Institution of Mechanical Engineers, Part I:

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The real “golden age” of electronic suspension can be probably located in the 1980s; during that decade the exceptional potential of replacing a traditional spring-damper system with a fully fledged electronically controllable fast-reacting hydraulic actuator was demonstrated. High costs, significant power absorption, bulky and unreliable hydraulic systems, and uncertain management of the safety issues: the fatal attraction for fully active electronic suspensions lasted only a few years. In the second half of the 1990s, a new trend emerged: it became increasingly clear that the best compromise of cost (component cost, weight, electronics and sensors, power consumption, etc.) and performance (comfort, handling, safety) was to be found in the technology of electronically controllable suspensions: the variable-damping suspension or, in brief, the semi-active suspension. After a decade this technology is still highly promising and attractive: it has been introduced in the mass-market production of cars; it is entering the motorcycle market; a lot of special vehicles or niche applications are considering this technology; many new variable-damping technologies are being developed. Semi-active suspensions are expected to play an even more important role in the emerging trend of electric vehicles with in-wheel motors: in such a vehicle architecture the role of suspension damping is more crucial, and semi-active suspensions can significantly contribute to reduce the negative effects of the large unsprung mass. As in many other electronically controlled systems, the actuator is not “smart itself”: it simply inherits the smartness (or dumbness) of its control algorithm designer. The key of semi-active suspensions is in the algorithm. For the discussed reasons, this paper briefly reviews the basic theoretical concepts for variable-damping shock absorber technologies and the available control algorithms.

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“…He introduced the solenoid valve's code, structure, parameters, performance and working principle in detail, and described operation process of damping changing. Aubouet et al (2008) have developed a nonlinear model of a semi-active damper in a quarter vehicle model; in addition, he studied the comfort and road-holding level of this suspension by comparing with the passive ones using simulations, and results indicated the performance improvement by the control of this damper. Chen et al (2015) has designed a MAD shock absorber; to acquire the damping characteristics, he built and solved out the mathematical modeling of damping force by using combination fluid dynamic and thermodynamic theories.…”

Section: Introductionmentioning

confidence: 99%

Fluid flow modeling of a four-stage damping adjustable shock absorber and its experimental research

Ding

Xie

Dai

et al. 2018

IJSI

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Purpose In order to improve the ride comfort of vehicle suspension, this paper first proposed a shock absorber with four-stage adjustable damping forces. The purpose of this paper is to validate its modeling and characteristics, indicator diagrams and velocity diagrams, which are the main research points. Design/methodology/approach In order to validate the fluid flow modeling, a series of mathematical modeling is established and solved by using Matlab/Simulink. An experiment rig based on electro-hydraulic loading servo system is designed to test the prototype. Finally, indicator diagram and velocity diagram are obtained and compared both in simulation and experiments. Findings Results indicate that at the same damping position, damping force will increase with the rise of rod’s velocity: if the rod’s velocity is fixed, the damping force changes apparently by altering the damping position. The shock absorber is softest at damping position 1, and it is hardest at damping position 4; although there is no any badly empty stroke and skewness in indicator diagram by simulation, a temporary empty stroke happens at maximum displacement of piston rob, both in rebound and compression strokes. Research limitations/implications Compared with results of the simulation and experiments, the design of a four-stage damping adjustable shock absorber (FDASA) is validated correctly in application, and may improve the overall dynamic performance of vehicle. Originality/value This paper is mainly focused on the design and testing of an FDASA, which may obtain four-stages damping characteristics, that totally has a vital importance to improve the performance of vehicle suspension.

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Performance analysis and simulation of a new industrial semi-active damper

Cited by 5 publications

References 9 publications

Semi-active H<inf>∞</inf> / LPV control for an industrial hydraulic damper

Semi-active H<inf>∞</inf> / LPV control for an industrial hydraulic damper

An investigation on semi-active suspension damper and control strategies for vehicle ride comfort and road holding

Fluid flow modeling of a four-stage damping adjustable shock absorber and its experimental research

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