Suspension control system and method thereof

摘要

A suspension control system and a method thereof are provided. Steering characteristics (e.g., under-steering and over-steering) of a running vehicle are analyzed to calculate lateral force of wheels and normal load (or normal force) of the wheels is calculated based on the lateral force. In addition, a current that corresponds to a total current value obtained by adding a yaw control current value corresponding to the normal force and a roll control current value is applied to a damper of the corresponding vehicles to perform roll control and yaw control of the vehicle.

主权项

1. A suspension control system comprising:
a memory configured to store program instructions; and a processor configured to execute the program instructions, the program instructions when executed configured to:
store a distance from a vehicle center of mass to front wheels, a distance from the vehicle center of mass to rear wheels, a vehicle mass m, a wheel base L, and a tire lateral force deflection sensitivity coefficient K based on a change in a load;store a yaw control current value based on a normal force and a damper velocity;collect a steering angle, a vehicle speed u, a yaw rate γ, and lateral acceleration ;determine steering characteristics of the vehicle;calculate lateral force of all the front and rear wheels based on the steering characteristics;calculate normal force of all the front and rear wheels based on the lateral force;detect a yaw control current value that corresponds to the normal force and a current damper velocity;detect a roll control current value based on a damper characteristic curve; andapply a current that corresponds to the sum of the yaw control current value and the roll control current value to a corresponding damper.