Occupant Posture Prediction Definition Dialog Box

The Occupant Posture Position dialog box appears when you select New Occupant Posture Prediction.

This dialog box contains controls for Posture Prediction.

This page discusses:

Posture Prediction

Name
Accept the default name or enter your own.
Package
Pick one package from the tree.
Method
The algorithm calculation methods available for the driver position are: Cascade and Cascade 2. The front passenger, second row passenger, and third row passenger use Optimization.

The Cascade prediction model is a statistical method for predicting automobile driving posture developed by Dr. Matthew Reed. This also included Miriam A. Manary, Carol A. C. Flannagan, and Lawrence W. Schneider. They are from the University of Michigan Transportation Research Institute, Ann Arbor, Michigan, on behalf of the Society of Automotive Engineering (SAE), published in 2002.

The Cascade2 prediction model is a slight modification to the original cascade.Cascade2 takes the type of transmission into account. The Transmission list is only available when you choose Cascade2.

Seat Ratio
This parameter represents the vertical adjustment of the seat for this posture prediction. It calculates based on the selected package.
Steering Wheel Tilt Ratio

Use the steering wheel tilt ratio to indicate the adjustment of the steering wheel angle for this posture prediction. It calculates based on the selected package.

Initial Posture

This option is available for seating positions other than a driver. It activates when the current posture prediction changes to active and associates with a manikin in the Interaction Scenario Definition Panel. Otherwise grays out, and you cannot select.

Select:

  • Current Posture
  • Hands-on knee
  • Hands-on thigh
  • Hands clasped

The selected initial posture option is activated when you select the Posture Prediction column then the row for that Manikin in the Interaction Scenario Definition Panel . Clicking here the Posture Prediction Listdialog box appears. Pick the required Posture prediction from the list, then OK.

The manikin places at the posture prediction position and the initial posture obtain the predicted position. This repeats when the Posture Prediction edits right-clicking and use the Posture prediction1 object, Definition.

The subsequent updates of a posture prediction scenario the manikin is define to the selected initial posture option. Selecting another position the manikin updates to the new posture. This enables the start of the posture prediction from the same starting / initial posture.

Seating Position:

This selects the seating position.

Side

This selects the side.

Transmission

This selects the Transmission, Automatic, or Manual.

Steering Wheel Telescope Ratio
Uses the steering wheel telescope ratio to indicate the telescopic adjustment of the steering wheel for this posture prediction. It calculates based on the selected package.
Steering Wheel Grasp Style:
Specify the hands position of the passenger manikin at a realistic and repeatable location on the steering wheel. The following two positions use for gripping the steering wheels. They are 9:15 and 10:10 position. These positions refer to the hour and minute hand of a clock.

Grasping style: 10:10 Grasping style: 9:15




Note: The default style can be specify using a setting in Customizing Preferences, Posture Prediction and Package.

Optional

Shoes
You can specify the size of the Man or Woman Heel and Sole height.

Logistics

Creation
After its creation, the Posture Prediction node is displayed in the tree.

  • Representation Ref node
    • Posture Prediction 1 (Package1 / Driver, Cascade2)

Interactions Scenario Definition
Once the Posture Prediction has been related to at least one manikin and the OK from the Interactions Scenario Definition panel pressed, the Posture Prediction's node is refreshed:

  • Representation Ref node
    • Posture Prediction 1 (Package1 / Driver, Cascade2)
      • Seat H-Point Coordinates (Manikin1)

If this Posture Prediction was related to 2 manikins, then its node refreshes as:

  • Representation Ref node
    • Posture Prediction 1 (Package1 / Driver, Cascade2)
      • Seat H-Point Coordinates (Manikin1).
      • Seat H-Point Coordinates (Manikin2).

In the case above, if the Manikin1 has its settings modified to another Posture Prediction, then Posture Prediction 1’s node refreshes. It only shows the relation that is ready to update:

  • Representation Ref node
    • Posture Prediction 1 (Package1 / Driver, Cascade2)
      • Seat H-Point Coordinates (Manikin2)

Update
Only at the update command the result values for the seat H_Point add to the Posture Predictions node.

  • Representation Ref node
    • Posture Prediction 1 (Package1 / Driver, Cascade2)
      • Seat H-Point Coordinates (Manikin1)
        • X
        • Z
        • In track