Apparatus for determining vehicle rollover risk
AssigneeHitachi Automotive Systems, Ltd.
InventorsAsahi Watanabe, Hiroshi Furuyama
Life of this patent
Estimating the term…
Abstract
A control apparatus for a vehicle, comprising a control unit having: a resultant acceleration information calculating section (100c) configured to calculate a resultant acceleration which is a synthesis of two direction accelerations acted upon the vehicle; a resultant jerk calculating section (100c2) configured to calculate a resultant jerk of at least one of change rates of the two directional accelerations with respect to time and a change rate of the resultant acceleration with respect to time; and a rollover tendency determining section (100e) configured to determine a tendency of rollover of the vehicle using at least one of the calculated resultant acceleration and the calculated resultant jerk.
Claims19
A control apparatus for a vehicle, comprising a control unit including:
- a resultant acceleration information calculating section configured to calculate a resultant acceleration which is a synthesis of two orthogonal direction accelerations acted upon the vehicle;
- a resultant jerk calculating section configured to calculate a resultant jerk of at least one of a change rate of the resultant acceleration with respect to time and of the synthesis of change rates of both of the two orthogonal direction accelerations with respect to time;
- and
- a rollover tendency determining section configured to determine a tendency of rollover of the vehicle using the calculated resultant jerk.
A control apparatus for a vehicle, comprising:
- a longitudinal acceleration calculating section configured to calculate a longitudinal acceleration acted upon the vehicle;
- a lateral acceleration calculating section configured to calculate a lateral acceleration acted upon the vehicle;
- a resultant acceleration information calculating section configured to calculate a resultant acceleration information related to a resultant acceleration which is a synthesis of the calculated respective longitudinal and lateral accelerations;
- a resultant jerk calculating section configured to calculate a resultant jerk of at least one of change rates of:
- a change rate of the resultant acceleration with respect to time;
- and both the longitudinal and lateral accelerations with respect to time;
- a rollover tendency determining section configured to determine the tendency of rollover of the vehicle on a basis of only the calculated resultant jerk;
- and
- a control unit configured to actuate a brake actuator to provide a braking force for at least one or each of road wheels installed on the vehicle when the rollover tendency determining section determines the tendency of rollover of the vehicle.
A control apparatus for a vehicle, comprising:
- a longitudinal acceleration sensor configured to detect a longitudinal acceleration acted upon the vehicle;
- a lateral acceleration sensor configured to detect a lateral acceleration acted upon the vehicle;
- a resultant acceleration calculating section configured to detect a resultant acceleration on a basis of the detected longitudinal acceleration and lateral acceleration;
- a resultant jerk calculating section configured to calculate a change rate of the calculated resultant acceleration with respect to time to calculate a resultant jerk;
- and
- a control unit configured to calculate a motion of the vehicle on a basis of the calculated resultant jerk, and configured to determine a tendency of rollover of the vehicle when the calculated motion of the vehicle is larger than a predetermined motion.
Dependencies are inferred from the claim text.