Rollover warning system for a vehicle

摘要

A rollover warning system for a vehicle includes: a base control inertial measurement unit with a plurality of sensors and a computer. The plurality of sensors measures a plurality of vehicle measurements. The plurality of vehicle measurements include at least two of: a longitudinal acceleration measurement; a lateral acceleration measurement; a vertical acceleration measurement; a roll rate measurement; a yaw rate measurement; and combinations thereof. Optionally, a pitch rate gyro for pitch measurement can be added for additional functionality, such as a vertical slope warning, or it can also be input into the predictive algorithm for defining additional vehicle hazardous operation states and conditions. The computer calculates a Rollover Risk Estimate based on the plurality of vehicle measurements taken by the plurality of sensors in the inertial measurement unit.

主权项

1. A rollover warning system comprising:
a base control inertial measurement unit having a plurality of sensors; said plurality of sensors measuring a plurality of vehicle measurements, said plurality of vehicle measurements including at least two of: a longitudinal acceleration measurement; a lateral acceleration measurement; a vertical acceleration measurement; a roll rate measurement; a pitch rate measurement; a yaw rate measurement; and combinations thereof; and a computer calculating a Rollover Risk Estimate based on said plurality of vehicle measurements taken by said plurality of sensors in said inertial measurement unit; said computer including an algorithm for calculating said Rollover Risk Estimate for three states;
said first state being typical of a vehicle navigating a side slope at relatively slow speeds, where the vehicle's speeds are not high enough to generate significant lateral acceleration;said second state being a steady state turning maneuver where the vehicle's speed can generate significant lateral acceleration; and said third state being an abrupt turning or sliding maneuver where the momentum of the vehicle will carry it into an unstable condition.