Steering submodule
Use steering parameters to define rack travel, steering ratio behavior, and camber change from steering input.
Steering defines rack travel, steering wheel to rack behavior, steer angle versus rack travel, and camber change versus steer angle. Use it to keep steering kinematics reusable across vehicle assemblies.
When to use it
Use steering when you need a reusable setup building block that can be selected in a vehicle assembly. Create and maintain it from Design > Steerings, then select it in the vehicle slot Steering.
How it fits vehicle setup
- Create or duplicate the submodule from the Design section.
- Open the submodule row to review and edit parameter values.
- Save changes with Update Data.
- Open Vehicles and select the submodule in Vehicle Assembly.
- Use the vehicle detail tabs to inspect the selected submodule inside the vehicle context.
You need module create permission to create a new submodule and module update permission to edit values.
Parameter reference
Units, defaults, and ranges show n/a when no stable user-facing value was verified in the source used for this page. Method rows control which constant, lookup table, or polynomial rows are active in the product table.
Kinematics
| Parameter | Description | Units | Default | Validation / Range |
|---|---|---|---|---|
| Rack Travel Max | The maximum distance that the steering rack can travel from its straight ahead position until it reaches the end stops. Is always a positive value. | mm | n/a | n/a |
| Constant | The amount of travel of the steering rack per a full revolution of the steering wheel. Positive rack travel is to the left. Positive steering wheel angle is turning counter-clockwise. | mm/rev | n/a | n/a |
| Method | Select in what way the steer angle vs rack travel shall be described and modeled, as a constant value, as a lookup table or by using polynomial functions. | n/a | n/a | Selects active input method |
| Constant | The steer angle vs rack travel as a constant value. | °/mm | n/a | Visible when method = Constant |
| Polynomial Left | Third order polynomial coefficients to define the wheel steer angle vs steering rack travel. steerAngle = c1 _ rackTravel + c2 _ rackTravel^2 + c3 * rackTravel^3. Positive steer angle is counter-clockwise when the wheel is seen from above. Positive steering rack travel is to the left. | °/mm | n/a | c0 fixed at 0 |
| Polynomial Right | Third order polynomial coefficients to define the wheel steer angle vs steering rack travel. steerAngle = c1 _ rackTravel + c2 _ rackTravel^2 + c3 * rackTravel^3. Positive steer angle is counter-clockwise when the wheel is seen from above. Positive steering rack travel is to the left. | °/mm | n/a | c0 fixed at 0 |
| Method | Select in what way the camber angle vs steer angle shall be described and modeled, as a constant value, as a lookup table or by using polynomial functions. | n/a | n/a | Selects active input method |
| Constant | The camber angle vs steer angle as a constant value. | °/° | n/a | Visible when method = Constant |
| Polynomial Left | Third order polynomial coefficients to define the camber angle vs the wheel steer angle. camberAngle = c1 _ steerAngle + c2 _ steerAngle^2 + c3 * steerAngle^3. This camber angle is added to the static camber angle and the contributions from the suspension kinematics and compliance camber angles. Positive steer angle is counter-clockwise when the wheel is seen from above. A positive camber angle is when the top of the wheel is further away from the center of the car than the bottom part. | °/° | n/a | c0 fixed at 0 |
| Polynomial Right | Third order polynomial coefficients to define the camber angle vs the wheel steer angle. camberAngle = c1 _ steerAngle + c2 _ steerAngle^2 + c3 * steerAngle^3. This camber angle is added to the static camber angle and the contributions from the suspension kinematics and compliance camber angles. Positive steer angle is counter-clockwise when the wheel is seen from above. A positive camber angle is when the top of the wheel is further away from the center of the car than the bottom part. | °/° | n/a | c0 fixed at 0 |
Related pages
Drivetrain submodule
Use drivetrain parameters to define engine, gearbox, final drive, drive split, efficiency, and differential behavior.
Suspension submodule
Use suspension parameters to define springs, dampers, anti-roll bars, stops, kinematics, compliance, setup values, and unsprung mass properties.