Non-linear compensation controller for active steering system in a vehicle
First Claim
1. A method for controlling vehicle steering, the method comprising:
- determining a target yaw rate and a target side-slip angle for a vehicle;
determining an initial vehicle actuator setting based on operator input;
applying a non-linear vehicle model to calculate a compensated vehicle actuator setting based on the initial vehicle actuator setting, an actual yaw rate of the vehicle, and an actual side-slip angle of the vehiclewherein the actual side-slip angle of the vehicle is detected by a side-slip angle sensor; and
controlling a vehicle actuator based on the compensated vehicle actuator setting to cause the actual yaw rate to approach the target yaw rate and to cause the actual side-slip angle to approach the target side-slip angle.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods are described for controlling vehicle steering. A target yaw rate and a target side-slip angle are determined for the vehicle and an initial steering angle setting is determined based on a position of a steering wheel operated by a driver of the vehicle. A nonlinear vehicle model is applied to calculate a compensated steering angle setting based on the initial steering angle setting, an actual yaw rate of the vehicle, and an actual side-slip angle of the vehicle. A steering system of the vehicle is then controls the angle of the front wheels of the vehicle based on the compensated steering angle and, by doing so, causes both the actual yaw rate and the actual side-slip angle to approach the target yaw rate and the target side-slip angle, respectively.
26 Citations
12 Claims
-
1. A method for controlling vehicle steering, the method comprising:
-
determining a target yaw rate and a target side-slip angle for a vehicle; determining an initial vehicle actuator setting based on operator input; applying a non-linear vehicle model to calculate a compensated vehicle actuator setting based on the initial vehicle actuator setting, an actual yaw rate of the vehicle, and an actual side-slip angle of the vehicle wherein the actual side-slip angle of the vehicle is detected by a side-slip angle sensor; and controlling a vehicle actuator based on the compensated vehicle actuator setting to cause the actual yaw rate to approach the target yaw rate and to cause the actual side-slip angle to approach the target side-slip angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A nonlinear compensation controller for controlling vehicle steering, the nonlinear compensation controller including a processor and memory storing instructions that, when executed by the processor, cause the nonlinear compensation controller to:
-
receive an initial steering angle setting determined based, at least in part, on a position of a steering wheel operated by a driver of the vehicle, apply a non-linear vehicle model to calculate a compensated steering angle setting based on the initial steering angle setting, an actual yaw rate of the vehicle, and an actual side-slip angle of the vehicle wherein the actual side-slip angle of the vehicle is detected by a side-slip angle sensor, and provide the compensated steering angle setting to a steering system of the vehicle, wherein the steering system of the vehicle controls an angle of at least one front wheel of the vehicle based on the compensated steering angle and, by applying the compensated steering angle setting, causes the actual yaw rate to approach a target yaw rate and the actual side-slip angle to approach a target side-slip angle.
-
-
12. A method for controlling vehicle steering, the method comprising:
-
determining a target yaw rate and a target side-slip angle for a vehicle; determining an initial steering angle setting based, at least in part, on a position of a steering wheel operated by a driver of the vehicle; applying a non-linear vehicle model to calculate a compensated steering angle setting based on the initial steering angle setting, an actual yaw rate of the vehicle, and an actual side-slip angle of the vehicle wherein the actual side-slip angle of the vehicle is detected by a side-slip angle sensor; and controlling a steering system of the vehicle based on the compensated steering angle setting, wherein the steering system of the vehicle controls an angle of at least one front wheel of the vehicle based on the compensated steering angle and, by applying the compensated steering angle setting, causes the actual yaw rate to approach the target yaw rate and the actual side-slip angle to approach the target side-slip angle.
-
Specification