Parameter Determination and Vehicle Dynamics Modeling for the NADS of the 1998 Chevrolet Malibu 2001-01-0140
The paper discusses the development of a model for a 1998 Chevrolet Malibu for the National Advanced Driving Simulator’s (NADS) vehicle dynamics simulation, NADSdyna. The Malibu is the third vehicle modeled for the NADS, and this is the third paper dealing with model development. SAE Paper 970564 contains details of the model for the 1994 Ford Taurus and SAE Paper 1999–01-0121 contains details of the model for the 1997 Jeep Cherokee.
The front and rear suspensions are independent strut and link type suspensions modeled using recursive rigid body dynamics formulations. The suspension springs and shock absorbers are modeled as elements in the rigid body formulation. To complement the vehicle dynamics for the NADS application, subsystem models that include tire forces, braking, powertrain, aerodynamics, and steering are added to the rigid body dynamics model. The models provide state-of-the-art high fidelity vehicle handling dynamics for real-time simulation. The methodology for generating the 1998 Chevrolet Malibu data is presented, as is all of the data for the chassis and subsystem models.
This paper also adds some of the developments achieved lately to solve “zero speed” wheel spin dynamics, aerodynamics disturbing forces, and steering torque feedback. These issues need to be resolved and implemented for the proper operation of a high fidelity simulator like the NADS.