NUM FICHE 005

082

CODE DOC 025

REDACTEUR 030

SIMAL Isabelle

ORGANISME 035

ISTI

DATE RED 040

9203

ILL 050

*

DOM GEN 060

électronique|industrie automobile|

DOM SPEC 065

dispositif électronique|suspension du véhicule automobile|

ENT AN 105

semi-active suspension

IN ENT AN 110

E; ab

DEF AN 115

Electronic suspension system that utilizes conventional passive shock absorbers and springs to control the damping rate, that contains few or no sensors and does generally not require such outside power sources as pumps to feed a small number of solenoid valves. (R)|ac|

CONT AN 120

A semi-active suspension is classified as one which provides a rapid rate of spring and/or damping coefficient modulation, typically under 20 msec, while consuming little power. A semi-active system does not add any energy into the mechanical vibratory system, utilizing strictly conserving (spring) or dissipating (damper) elements only. A semi-active suspension is assumed to contain few or no anticipatory sensors, except, possibly, for road profile preview. It generally relies only on suspension and sprung mass response for control input. |a| ((...)) a semi-active suspension which employs variable damping force shock absorbers and does not require such power sources as pneumatic or hydraulic pumps. |b|

SYN AN 130

1- semi-active damping system |E; c|

2- semi-active system |E; d|

: 131

CONT 1: This system uses a very small amount of power to actuate very fast electronic control valves in the shock absorbers. The shock absorbers do not add energy to the vehicle system but only dissipate at the optimal rate and time during the vibrations of the suspension unit. Semi-active damping systems can improve ride and handling in most situations by maintaining better tire contact with the road and a better suspension geometry by decreasing the "rate" of pitch and roll. |c|

ENT FR 205

suspension semi-active

IN ENT FR 210

n f; F; e

DEF FR 215

Suspension électronique qui utilise des amortisseurs et ressorts conventionnels passifs, qui comprend peu ou pas de capteurs et qui ne nécessite généralement pas de source d'énergie extérieure telle qu'une pompe pour alimenter un petit nombre d'électrovannes. (T)(R)

CONT FR 220

Pour une suspension "semi-active", les caractéristiques (raideur, amortissement) sont susceptibles d'être modifiées par des actions extérieures, sans pour cela nécessiter de source d'énergie. |e|

SOURCES 295

SOURCE ANNEE VOLUME NUMERO MOIS PAGE MENTION

a MONR 1h-G 1988 83

b MONR 6-F 1985 24

c VEDY-E 1991 130

d DEAN-F 1991 341

e PHAM 1-F 1987 108

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© Isabelle Simal, 1993.