Automotive

Model vehicle dynamics using a vehicle model that has 14 degrees of freedom.

Illustrates a double wishbone front wheel automotive suspension. The suspension is mounted on two platforms that can independently move up and down to simulate a road profile on each wheel. For a given pair of road profiles, the resultant roll and bounce of the chassis can be studied and the suspension parameters tuned for optimal performance. The inputs to the two platforms are the road profile and its derivative. The platforms have a PD controller that controls the vertical position of the platform to mimic the input road profile. See "Road Profiles Generator" block dialog for details on the test road profiles.

Models a passenger vehicle on a four-post testrig. The posts move up and down to replicate the vertical movement of the wheels as it travels along a road. The simulation results and animation show the response of the vehicle body and suspension as it is subjected to the motions from the testrig. The roll and pitch of the vehicle body can be observed, and by varying the inputs wheel hop frequencies can be determined. The vehicle model can be configured to use different suspension types for the front suspension with different linkage combinations.

Includes templates for three common types of automotive independent suspension systems: double wishbone, MacPherson, and pushrod. Tires attached to the suspension systems are mounted on platforms that can independently move up and down. Each platform has a PD controller that allows it to simulate a desired road profile. For a given pair of road profiles, the resultant roll and bounce of the chassis can be studied and the suspension parameters can be tuned for optimal performance.