Vehicle steering control without mechanical connection...

Details Vehicle steering control without mechanical connection... Vehicle steering control without mechanical connection...

2006-03-24

2011-10-25

Trammell, James (Department: 3667)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C701S042000, C180S006200, C180S415000

Reexamination Certificate

active

08046132

ABSTRACT:
A vehicle steering control system includes a controller for determining control angles for actuators used for steering the vehicle based on at least a speed of the vehicle and a steering signal. The controller includes a unit, a module, and a block. The unit determines an equivalent steering angle of a steered wheel of an equivalent bicycle model according to the steering signal, and also determines a transverse coordinate of an instantaneous center of rotation of the vehicle. The module controls a steering behaviour of the vehicle to enable a longitudinal coordinate of the instantaneous center of rotation of the vehicle to be determined from the speed of the vehicle and a maximum transverse acceleration parameter of the vehicle. The block determines the control angles from the longitudinal coordinate and the transverse coordinate. The maximum transverse acceleration parameter of the vehicle is fixed for the vehicle or is variable based on conditions of operation of the vehicle.

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