(Standard Interface) Simulate -> Full-Vehicle Analysis -> Open-Loop Steering Events -> Ramp Steer

For the option:	Do the following:
Full-Vehicle Assembly	Select the full-vehicle assembly you want to analyze. The menu lists all full-vehicle assemblies currently open in your session.
Output Prefix	Enter a string that specifies the analysis output name. The string can contain only alphanumeric characters and underscores (_). Adams/Car appends the suffix _ramp to form the complete analysis name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_ramp.
End Time	Specify the time, in seconds, at which the analysis ends.
Number of Steps	Specify the number of output steps.
Mode of Simulation	Select interactive, background, or files only.
Road Data File	Enter the name of a file that contains road data information. The tire subsystems use this information to calculate the tire/road interaction forces. Tips on entering file names in text boxes.
Initial Velocity	Enter the initial speed of the vehicle in the units specified in the pull-down menu to the right of the Initial Velocity text box.
Gear Position	Specify the initial transmission gear for the analysis. The powertrain subsystem uses this parameter that generally acts as a gain for the throttle-demand output from the cruise control. The gear remains constant for the entire maneuver, regardless of the selection for the Cruise Control. Adams/Car stores the gear ratios in the powertrain subsystem.
Initial Steer Value	Enter a real value that fixes the initial steer value at the start of the analysis. Adams/Car maintains this steer value until the analysis starts.
Ramp	Enter the rate at which the steering value will change. The units for this parameter are consistent with the selected Steering Input. If you selected Angle and the model units are degrees and seconds, the ramp will be expressed in degrees/sec.
Start Time	Specify the time at which the ramp steer will begin.
Steering Input	Select one of the following: • Force - Indicates that the steering inputs are forces applied to the rack of the steering subsystem. • Torque - Indicates that the steering input is a torque applied to the steering wheel. • Angle - Indicates that the steering inputs are steering wheel angular displacements. • Length - Indicates that the steering inputs are rack displacements.
Cruise Control	Select if you want Adams/Car to try to maintain the specified Initial Velocity throughout the analysis, using the longitudinal controller inside the Driving Machine. Learn about the Driving Machine. To use this controller, your assembly must contain a powertrain subsystem.
Quasi-Static Straight-Line Setup	Select to perform a quasi-static prephase analysis before running the transient analysis on your full-vehicle assemblies. • For all cornering analyses, selecting this option causes Adams/Car to perform a SKID_PAD quasi-static analysis. • For all other analyses, selecting this option causes Adams/Car to perform a STRAIGHT (sometimes called ClearVision adjustment) analysis. If you do not select this option, Adams/Car performs a SETTLE analysis. For more information about the different quasi-static setup method keywords (such as SETTLE and STRAIGHT), see Structure of Event Files. Note: You cannot select the Quasi-Static Setup option if: • You have a steerable conceptual suspension subsystem, because there is no feedback that goes from the wheel to the steering system. For information about conceptual suspension subsystems, see Introducing the Conceptual Suspension Module. • You do not have a powertrain subsystem in your vehicle assembly, because it is not possible to set the initial condition for the longitudinal or the lateral dynamics (throttle position).
Create Analysis Log File	Select if you want Adams/Car to write information about the assembled model and analysis to an analysis log file.
	Select to display a dialog box where you can add multi-line comments to any entity, to describe its purpose and function. Adams/Car displays different comments dialog boxes, depending on the entity type for which you want to record comments: • If recording comments for modeling entities in Standard Interface, Adams/Car displays the Entity Comments dialog box. • If recording comments for any other entity type, Adams/Car displays the Modify Comment dialog box. Learn where Adams/Car records comments.

Select the full-vehicle assembly you want to analyze. The menu lists all full-vehicle assemblies currently open in your session.

Output Prefix

Enter a string that specifies the analysis output name. The string can contain only alphanumeric characters and underscores (_). Adams/Car appends the suffix _ramp to form the complete analysis name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_ramp.

End Time

Specify the time, in seconds, at which the analysis ends.

Number of Steps

Specify the number of output steps.

Mode of Simulation

Select interactive, background, or files only.

Road Data File

Enter the name of a file that contains road data information. The tire subsystems use this information to calculate the tire/road interaction forces.

Tips on entering file names in text boxes.

Initial Velocity

Enter the initial speed of the vehicle in the units specified in the pull-down menu to the right of the Initial Velocity text box.

Gear Position

Specify the initial transmission gear for the analysis. The powertrain subsystem uses this parameter that generally acts as a gain for the throttle-demand output from the cruise control. The gear remains constant for the entire maneuver, regardless of the selection for the Cruise Control.

Adams/Car stores the gear ratios in the powertrain subsystem.

Initial Steer Value

Enter a real value that fixes the initial steer value at the start of the analysis. Adams/Car maintains this steer value until the analysis starts.

Ramp

Enter the rate at which the steering value will change. The units for this parameter are consistent with the selected Steering Input. If you selected Angle and the model units are degrees and seconds, the ramp will be expressed in degrees/sec.

Start Time

Specify the time at which the ramp steer will begin.

Steering Input

Select one of the following:

• Force - Indicates that the steering inputs are forces applied to the rack of the steering subsystem.

• Torque - Indicates that the steering input is a torque applied to the steering wheel.

• Angle - Indicates that the steering inputs are steering wheel angular displacements.

• Length - Indicates that the steering inputs are rack displacements.

Cruise Control

Select if you want Adams/Car to try to maintain the specified Initial Velocity throughout the analysis, using the longitudinal controller inside the Driving Machine. Learn about the Driving Machine.

To use this controller, your assembly must contain a powertrain subsystem.

Quasi-Static Straight-Line Setup

Select to perform a quasi-static prephase analysis before running the transient analysis on your full-vehicle assemblies.

• For all cornering analyses, selecting this option causes Adams/Car to perform a SKID_PAD quasi-static analysis.

• For all other analyses, selecting this option causes Adams/Car to perform a STRAIGHT (sometimes called ClearVision adjustment) analysis.

If you do not select this option, Adams/Car performs a SETTLE analysis.

For more information about the different quasi-static setup method keywords (such as SETTLE and STRAIGHT), see Structure of Event Files.

Note: You cannot select the Quasi-Static Setup option if:

• You have a steerable conceptual suspension subsystem, because there is no feedback that goes from the wheel to the steering system. For information about conceptual suspension subsystems, see Introducing the Conceptual Suspension Module.

• You do not have a powertrain subsystem in your vehicle assembly, because it is not possible to set the initial condition for the longitudinal or the lateral dynamics (throttle position).

Create Analysis Log File

Select if you want Adams/Car to write information about the assembled model and analysis to an analysis log file.

Select to display a dialog box where you can add multi-line comments to any entity, to describe its purpose and function. Adams/Car displays different comments dialog boxes, depending on the entity type for which you want to record comments:

• If recording comments for modeling entities in Standard Interface, Adams/Car displays the Entity Comments dialog box.

• If recording comments for any other entity type, Adams/Car displays the Modify Comment dialog box.

Learn where Adams/Car records comments.