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.


Figure 2.
The parameters available in the Throttle off cornering event are detailed in the following table:
Parameter Description
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 in meters. This section is used to allow the vehicle to reach steady state.
Turn direction Direction the vehicle turns during the event (as seen by the driver).
Velocity Velocity of the vehicle in meters/sec.
Look ahead time Look ahead time used by the Altair Driver model.
Prediction step size Maximum step size used by MotionSolve integrator.
Throttle off time The absolute time in the simulation that the Altair Driver begins removing drive torque.
Throttle step duration The length of the time the throttle controller takes to completely remove the drive torque.
End time Absolute end time of the event, in seconds.
Print interval Data is output to the plot files and graphics file at this time interval (seconds).