Throttle-off Cornering
A Throttle-off cornering event simulates the dynamics of a vehicle driving a constant radius turn at steady state and the reaction of the vehicle due to a sudden removal of the drive torque while cornering.
The event includes a short straight section to allow the vehicle to come to steady state, the constant radius circle, throttle removal, and the subsequent vehicle reaction. A left or right turn can be simulated. The appropriate vehicle and tire output requests are included. A plot template is available to plot the results.
Figure 1. Throttle-off Cornering Event
Figure 2.
The parameters available in the Throttle off cornering event are detailed in the following
table:
| Parameter | Description |
|---|---|
| Units | Length unit selection (Model, m, ft). Velocity unit selection (Model, m/s, km/h, mph). Acceleration unit selection (Model, m/s2, g’s). |
| Radius | The radius of the circle that the vehicle CG will follow during the constant radius portion of the event. |
| Initial straight | Length of the initial straight road section. |
| Initial velocity | Initial velocity of the vehicle until the throttle is switched off. |
| Initial lateral acceleration | Estimated initial lateral acceleration, calculated using the initial speed and the turn radius. |
| Turn direction | Direction the vehicle turns during the event (as seen by the driver). |
| Transient time | Time duration for which the vehicle decelerates after switching off the Throttle. |
| Throttle step duration | Step duration of throttle to completely remove the drive torque. |
| Look ahead time | Look ahead time, used by the Driver Feedforward steering model. |
| Prediction step size | Maximum step size, used by the Driver Feedforward steering model. |
| Print interval | Time interval of data output to the plot file (.plt) and graphics file (.h3d). |