MDA Mécanisme de Direction "Ackermann"

7.1.2.1.- MÉCANISMES 14.1.2.1.- MÉCANISMES
ACKERMANN STEERING MECHANISM - MDA

SYSTEMES INNOVANTS

The Ackermann Steering Mechanism, "MDA", allows to explain the special features of the Ackermann steering geometry and to study the influence of the steering angle with varying steering geometry.

Voir description générale

Expansions

ICAI

Logiciel Interactif pour l'Enseignement assisté par Ordinateur
MSAC

Système Modulaire d'Acquisition et de Contrôle

Laboratories

7TV
 Laboratoire de Mécanique, d'automobile et de Matériaux pour l'enseignement Technique et Professionnel
7HE
 Laboratoire de Mécanique, d'automobile et de Matériaux pour l'enseignement Supérieur

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Description Générale

The Ackermann Steering Mechanism, "MDA", is a bench-mounted unit designed to determine the lead angle of a steering trapezoid in an Ackermann steering mechanism, the disadvantages of incorrectly adjusted track rods and the influence of the track rod length.

This unit consists of a complete Ackermann linkage model mounted on a flat frame. The symmetrical linkage system consists of two track rods and an intermediate steering rod.

Each track rod is coupled to a lever and a pivot. These pivots simulate the point where each wheel of a car is connected to. The whole system can turn from left to right by hand. There are two rotating indicators, attached to the pivots, which indicate the steering angle on graduated discs.

The linkage system is fully adjustable so that Ackermann angles can be varied. The length of the track rods may be modified to demonstrate the effect of misalignment or damage of the steering.

Des exercices et pratiques guidées

EXERCICES GUIDÉS INCLUS DANS LE MANUEL

  1. Determination of the lead angle of a steering trapezoid.
  2. Demonstrating how Ackermann angles are determined in a steering system.
  3. Study of the influence of the track rod length.
  4. Determining the steering error as a function of the steering angle with varying steering geometry.
  5. Determining the variation on turns caused by track maladjustment.
  6. Determining the variation on turns caused by damage.

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