For the option: | Do the following: |
|---|---|
Full-Vehicle Assembly | Select the assembly for which you want to set parameters. |
Steering Ratio | Enter the dimensionless ratio between the steering wheel angle and the road wheel angle. You can obtain this value by running a steering analysis on the front suspension and steering assembly. |
Rack Ratio | Enter the rack ratio (angle/length) between the steering hand wheel and the rack displacement expressed in SI units. This parameter influences the response of the controller only when driving by force/displacement. Note: The Sign depends on the current steering configuration. For example, if the tierod is infront of wheel center, you may need to negate the value or vice versa for proper motion transfer from rack to wheels. |
Max Front Brake Torque | Enter the maximum torque, expressed in model units, representing the torque generated per side of the front axle under maximum brake demand, also expressed in model units. Note: This field is not available if a communicator matching max_front_brake_torque is found. |
Max Rear Brake Torque | Enter the maximum torque, expressed in model units, representing the torque generated per side of the rear axle under maximum brake demand, also expressed in model units. Note: This field is not available if a communicator matching max_rear_brake_torque is found. |
Pitch Angle | Enter the pitch angle of the body in static condition. This parameter is only used in aerodynamic force when input is in the form of 3d spline. Note: To obtain this value analytically, you can run a static equilibrium analysis. |
Pitch Angle (Braking) | Enter the pitch angle of the body in braking condition. This parameter is only used in aerodynamic force when input is in the form of 3d spline. Note: To obtain this value analytically, you can run a static equilibrium analysis at specified deceleration. |
Brake Bias (% Front) | Enter the front-to-rear dimensionless ratio. Brake bias can be computed as Max Front Brake Torque / (Max Front Brake Torque + Max Rear Brake Torque). Note: This field is not available if a communicator matching brake_bias is found. |
Drive Bias (% Front) | Select a number that defines the percentage of the total driving force applied to the front wheels: ■Use a setting of 100 to define a pure front-wheel-drive setup and a setting of 0 to define a pure rear-wheel-drive setup. ■For an all-wheel-drive vehicle, the drive ratio might be, for example, 60. Note: This option is only enabled for .__MDI_SPMM_TESTRIG. |