Method and system for operating a motor vehicle
AssigneeFord Global Technologies, LLC
InventorsYvonne Baeumchen, Michael Seemann, Marc Suermann, Markus Schommer, Uwe Hoffmann, Russ Lee Norton
Life of this patent
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Abstract
A method and system for operating a motor vehicle is described. In one example, spring rates for suspension springs and damping rates for shock absorbers are adjusted in response to vertical acceleration, longitudinal angular acceleration, and lateral angular acceleration of a vehicle body in the absence of accelerometers. The system and method may improve vehicle driving dynamics and lower system cost as compared to other systems.
Claims19
A method for operating a vehicle, comprising:
- adjusting a damper in response to a vertical acceleration of a vehicle body, a longitudinal angular acceleration of the vehicle body, and a lateral angular acceleration of the vehicle body provided via damping currents of a plurality of shock absorbers and positions of the plurality of shock absorbers and determined via an inverse mass matrix.
A method for operating a vehicle, comprising:
- adjusting a damper in response to a vertical acceleration, a longitudinal angular acceleration, and a lateral angular acceleration provided via a mass of a vehicle body, two moments of inertia of the vehicle body, positions of a plurality of shock absorbers relative to a center of gravity of the vehicle body, a mean height of a longitudinal axis of rotation of the vehicle body, a mean height of a transverse axis of rotation of the vehicle body, damping forces of the plurality of shock absorbers, and spring forces of a plurality of spring elements coupled to the vehicle body.
A wheel suspension system connected to a vehicle body, comprising:
- at least three spring elements;
- at least three height sensors;
- at least three shock absorbers;
- and
- a controller, the controller including instructions for adjusting damping rates of the at least three shock absorbers responsive to vertical acceleration, longitudinal angular acceleration, and lateral angular acceleration of the vehicle body, the vertical acceleration, longitudinal angular acceleration, and lateral angular acceleration of the vehicle body provided solely via the at least three height sensors and damping forces of the at least three shock absorbers, spring forces of the at least three spring elements, mass of the vehicle body, two moments of inertia of the body, a mean height of a longitudinal axis of rotation of the vehicle body, and a mean height of a transverse axis of rotation of the vehicle body.
Dependencies are inferred from the claim text.