Assembly and method for monitoring the driving condition of a vehicle
AssigneeRobert Bosch GmbH
InventorsKlaus Landesfeind, Thomas Braun
Life of this patent
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Abstract
The present invention relates to an arrangement for monitoring the driving condition of a vehicle, having means for generating a steering angle signal (Lw) and means for generating a transverse acceleration signal (ay), means being provided for comparing a signal derived from the steering angle signal Lw to a maximum steering angle signal, means being provided for comparing a signal derived from the transverse acceleration signal (ay) to a maximum transverse acceleration signal, and a variable (F) that describes the driving condition of the vehicle being derivable from the comparison. The present invention also relates to a method of monitoring the driving condition of a vehicle.
Claims16
A system for monitoring the driving condition of a vehicle, comprising
- means for generating a steering angle signal (Lw) and
- means for generating a transverse acceleration signal (ay),
- wherein
- means are provided for comparing a signal derived from the steering angle signal (Lw) to a maximum steering angle signal,
- means are provided for comparing a signal derived from the transverse acceleration signal (ay) to a maximum transverse acceleration signal, and
- a variable (F) that describes the driving condition of the vehicle may be derived from the comparisons.
The system as recited in one of the preceding claims, wherein a variable that describes the driving condition of the vehicle may be derived from the maximum of the normalized absolute values.
The system as recited in one of the preceding claims,
- wherein
- the absolute value of the difference between the steering angle signal and the filtered steering angle signal is compared to the maximum steering angle signal, and
- the normalized absolute value of the difference between the steering angle signal and the filtered steering angle signal is assigned a value of 100%, if the absolute value of the difference between the steering angle signal and the filtered steering angle signal is greater than or equal to the maximum steering angle signal.
The system as recited in one of the preceding claims,
- wherein
- the absolute value of the difference between the transverse acceleration signal and the filtered transverse acceleration signal is compared to the maximum transverse acceleration signal, and
- the normalized absolute value of the difference between the transverse acceleration signal and the filtered transverse acceleration signal is assigned a value of 100%, if the absolute value of the difference between the transverse acceleration signal and the filtered transverse acceleration signal is greater than or equal to the maximum transverse acceleration signal.
The system as recited in one of the preceding claims, wherein a change in the driving condition to the non-steady-state driving condition is taken over directly into the variable that describes the driving condition.
The system as recited in one of the preceding claims, wherein a change in the driving condition to the steady-state driving condition is taken over into the variable that describes the driving condition in such a manner as to limit the gradient over a time window.
A method of monitoring the driving condition of a vehicle, having the steps:
- generation of a steering angle signal (Lw) (S1),
- generation of a transverse acceleration signal (ay) (T1),
- wherein
- a signal derived from the steering angle signal (Lw) is compared to a maximum steering angle signal (ST6),
- a signal derived from the transverse acceleration signal (ay) is compared to a maximum transverse acceleration signal (ST6), and
- a variable that describes the driving condition of the vehicle is derived from the comparison (ST8).
Dependencies are inferred from the claim text.