Rollover warning and detection method for transport vehicles
First Claim
1. A rollover detection method for a transport vehicle, comprising the steps of:
- establishing baseline relationships between centrifugal acceleration and measured lateral acceleration for different CG heights of said vehicle;
determining a centrifugal acceleration acting on said vehicle;
measuring a lateral acceleration of said vehicle;
determining a CG height of said vehicle based on the determined centrifugal acceleration, the measured lateral acceleration, and the baseline relationships;
detecting an impending rollover event based on comparison of a rollover-related parameter to a calibrated threshold; and
adapting the detection of said impending rollover event to account for vehicle loading conditions when the determined CG height is higher or lower than a predetermined height.
2 Assignments
0 Petitions
Accused Products
Abstract
A rollover warning and detection method for a transport vehicle is adaptively adjustable to take into account the CG height of the vehicle. Measures of the vehicle speed, lateral acceleration and yaw rate are sampled during normal driving conditions and used to estimate the CG height of the vehicle. The centrifugal acceleration acting on the vehicle is calculated as the product of vehicle speed and yaw rate, and the CG height is estimated based on the relationship between the calculated centrifugal acceleration and the measured lateral acceleration. The estimated CG height of the vehicle is used to adjust various calibrated rollover detection thresholds so that algorithm outputs such as rollover warnings automatically take into consideration vehicle loading effects.
21 Citations
9 Claims
-
1. A rollover detection method for a transport vehicle, comprising the steps of:
-
establishing baseline relationships between centrifugal acceleration and measured lateral acceleration for different CG heights of said vehicle; determining a centrifugal acceleration acting on said vehicle; measuring a lateral acceleration of said vehicle; determining a CG height of said vehicle based on the determined centrifugal acceleration, the measured lateral acceleration, and the baseline relationships; detecting an impending rollover event based on comparison of a rollover-related parameter to a calibrated threshold; and adapting the detection of said impending rollover event to account for vehicle loading conditions when the determined CG height is higher or lower than a predetermined height. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification