NUM FICHE 005

062

CODE DOC 025

REDACTEUR 030

SIMAL Isabelle

ORGANISME 035

ISTI

DATE RED 040

9202

ILL 050

*

DOM GEN 060

électronique|industrie automobile|

DOM SPEC 065

dispositif électronique|suspension du véhicule automobile|

ENT AN 105

low frequency active suspension system

IN ENT AN 110

E; a

DEF AN 115

Active suspension system that utilizes conventional passive shock absorbers and springs made active by an outside power source, such as a pump, and one or more accumulators adding or removing fluid from the units. (R)|ab|

CONT AN 120

The low frequency active suspension systems being developed are currently using a single central pump and one or more accumulators to provide and store hydraulic energy at a constant pressure for actuating the suspension units. |a|

SYN AN 130

1- slow active suspension system |E; c|

2- slow-active system |E; d|

3- slow active suspension |E; d|

4- low-power active suspension |E; e|

ENT ADD AN 135

1- low frequency active system |E; b|

: 136

CONT 1: The low frequency active system (sometimes referred to as low band active or soft active) uses a passive spring element, usually in the form of a hydropneumatic spring/shock absorber that isolates the high frequency road vibrations from the body. Each hydropneumatic suspension unit is made active by adding or removing fluid. In effect, the predeflection is actively changed for each passive hydropneumatic spring. Each hydropneumatic spring is actuated to minimise the low frequency body motions of pitch, roll, and heave which range from 1 to 3 Hz. Most of the benefits of a fully active system can be obtained with a low frequency active system, but with much less complexity, lower cost, and reduced power requirements. |b| A suspension can be considered active when an outside power source is used to alter its characteristics, and these systems can be placed in one of three different categories: semi-active damping, fully active, and low frequency active. A regenerative pump concept can minimise the power requirement for the low frequency active system. It uses four independent variable displacement pump/motor combinations on a common shaft to actuate each individual suspension unit. |b|

ENT FR 205

suspension active basse fréquence

IN ENT FR 210

n f; F; (R)

DEF FR 215

Suspension active qui utilise des amortisseurs et ressorts conventionnels passifs rendus actifs par une source d'énergie extérieure, telle qu'une pompe et un ou plusieurs accumulateurs qui ajoutent ou retirent du fluide des unités. (T)(R)

CONT FR 220

SOURCES 295

SOURCE ANNEE VOLUME NUMERO MOIS PAGE MENTION

a WEST-F 1991 187

b WEST-F 1991 185

c MONR 1a-G 1988 2

d SHAR-F 1988 87

e MONR 1c-G 1988 27

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 Consulter la bibliographie.

 Retourner à la liste des microglossaires.

© Isabelle Simal, 1993.