Straight Line Braking
A Straight line Braking event simulates a vehicle slowing in a straight line.
The steering wheel is normally held fixed. The Altair Driver applies torque at the wheels to slow the vehicle and appropriate output requests are included. A plot template is available to the plot the results.
Figure 1.
The parameters available in the Straight Line Braking event is detailed in the following
table:
| Parameter | Description |
|---|---|
| Units | Length unit selection (Model, m, ft). Acceleration unit selection (Model, m/s2, g’s). |
| Velocity | Initial vehicle velocity. |
| Desired deceleration | Desired Acceleration rate of the vehicle. |
| Brake start time | Time at which the vehicle deceleration starts. |
| Transient time | Time period for which the vehicle decelerates. |
| Print interval | Time interval of data output to the plot file (.plt) and graphics file (.h3d). |
Reference
ISO +21994-2007 - Passenger cars - Stopping distance at straight-line braking with ABS - Open loop test method.