Method for controlling an electric power steering system
First Claim
1. Method for controlling an electrical power steering for a vehicle comprising an electrical servomotor, having a power take-off, a control and/or regulation device, a steering device for entering a reference value (θ
-
S) of a steering angle into the control and/or regulation device, a moment sensor and a first angle sensor for the steering device, an estimating device for estimating the moment (Mv) at the steering device, a second angle sensor for determining the angle (θ
A) of the power take-off of the electrical servomotor, an offset value (Δ
θ
) being determined constantly from the reference value (δ
S) of the steering angle and an actual value (θ
I) of the steering angle and a virtual moment (Mv) of the steering device being determined on the basis of the offset value (Δ
θ
).
2 Assignments
0 Petitions
Accused Products
Abstract
A method for controlling an electrical power steering system for a vehicle includes a electrical servometer, a steering device for entering a reference value (θS) of a steering angle into a control and/or regulation device, a moment sensor and an angle sensor for the steering device, a device for estimating the moment (Mv) at the steering device and an angle sensor for determining the angle (θA) of a power take-off of the electrical servomotor. In order to control the electrical power steering system, which makes a non-critical behavior possible in the event of a malfunction or failure of a moment sensor at the steering device, provisions are made so that an offset value (Δθ) is constantly formed from the reference value (δS) of the steering angel and the actual value θI of the steering angle, and a virtual moment (Mv) of the steering device is determined on the basis of the offset value (Δθ) and is used to control the electrical servomotor.
-
Citations
13 Claims
-
1. Method for controlling an electrical power steering for a vehicle comprising an electrical servomotor, having a power take-off, a control and/or regulation device, a steering device for entering a reference value (θ
-
S) of a steering angle into the control and/or regulation device, a moment sensor and a first angle sensor for the steering device, an estimating device for estimating the moment (Mv) at the steering device, a second angle sensor for determining the angle (θ
A) of the power take-off of the electrical servomotor, an offset value (Δ
θ
) being determined constantly from the reference value (δ
S) of the steering angle and an actual value (θ
I) of the steering angle and a virtual moment (Mv) of the steering device being determined on the basis of the offset value (Δ
θ
). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
S) of a steering angle into the control and/or regulation device, a moment sensor and a first angle sensor for the steering device, an estimating device for estimating the moment (Mv) at the steering device, a second angle sensor for determining the angle (θ
Specification