System for estimating vehicle states for rollover reduction

Details System for estimating vehicle states for rollover reduction System for estimating vehicle states for rollover reduction

2007-05-07

2010-12-07

Tran, Khoi (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C701S001000, C701S034000, C701S036000, C701S038000, C701S041000, C180S271000, C180S282000, C280S005502, C280S755000, C303S130000, C303S140000, C303S146000, C303S189000

Reexamination Certificate

active

07848864

ABSTRACT:
A system and method for estimating vehicle states, such as vehicle roll-rate, vehicle roll angle, vehicle lateral velocity and vehicle yaw-rate, for use in rollover reduction. The system includes an extended Kalman filter observer responsive to a steering angle signal, a yaw-rate signal, a roll-rate signal, a speed signal and a lateral acceleration signal that calculates an estimated yaw-rate signal, an estimated roll-rate, an estimated roll angle and an estimated lateral velocity. The system also includes a lateral velocity estimation processor responsive to the roll-rate signal, the estimated roll angle signal, the estimated lateral velocity signal and the lateral acceleration signal that calculates a modified lateral velocity estimation signal when the vehicle is operating in a non-linear region.

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