Pulse Steer
A Pulse steer event simulates a vehicle response to a sudden pulse input to the steering wheel while driving in a straight line at a constant speed.
The input to the event can be a steering wheel angle, and you can set the pulse magnitude and width. The pulse can be input as a sine, step, or ramp function and you control the width. The Altair Driver is used to maintain a constant speed, and standard outputs for the vehicle and tires are included in the Tire System and the Output Requests system. A plot template is available to plot the results.
Parameter | Description |
---|---|
Steer input magnitude | The magnitude of the steering input that is applied, in degrees. A positive value results in a left turn and a negative value turns the vehicle right. |
Length of pulse | The length of the steering pulse in seconds. |
Function type | The function type used in the pulse steer portion of the event (sin, step, or ramp). |
Steer input time | The absolute time in seconds when the steer pulse reaches its maximum angle. |
Velocity | Velocity the vehicle maintains during the event in meters/sec. |
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). |
References
ISO +7401-2003 – Road Vehicles-Lateral transient response test methods-Open-loop test methods.