Vehicle motion control system and method
AssigneeMagna International Inc.
InventorsChristoph Hoefer, Anastasiia Galkina, Michael Doppler
Life of this patent
Estimating the term…
Abstract
An active suspension control system for a vehicle includes an unsprung mass coupled to a sprung mass by a spring, and an actuator disposed between the unsprung mass and the sprung mass and configured to apply a force therebetween. The active suspension control system also includes a controller in functional communication with the actuator. The controller is configured to cause the actuator to vary the application of the force based on a force command signal. The controller is configured to determine the force command signal based on at least one of: a linear quadratic control technique, or an impedance control technique that uses a low-pass filtered actual-value signal.
Claims18
An active suspension control system for a vehicle, comprising:
- an unsprung mass coupled to a sprung mass by a spring;
- an actuator disposed between the unsprung mass and the sprung mass and configured to apply a force therebetween;
- a controller in functional communication with the actuator and configured to cause the actuator to vary the force based on a force command signal, wherein the controller is configured to determine the force command signal based on at least one of:
- a linear quadratic control technique;
- or an impedance control technique using a low-pass filtered actual-value signal,
- wherein the actuator includes at least one actuatable component for controlling the force applied, wherein the at least one actuatable component includes at least one of:
- a clutch and/or a brake, and
- wherein the at least one of the clutch and/or the brake is operable based on changing a viscosity of a magnetorheological (MR) fluid.
A method for controlling an active suspension control system for a vehicle, comprising:
- applying a force, by an actuator, between an unsprung mass and a sprung mass, wherein the unsprung mass is coupled to the sprung mass by a spring;
- determining, by a controller, a force command signal based on at least one of:
- a linear quadratic control technique, or an impedance control technique using a low-pass filtered actual-value signal;
- and
- communicating, the force command signal to the actuator to cause the actuator to vary the force,
- wherein the actuator includes at least one actuatable component for controlling the force applied, wherein the at least one actuatable component includes at least one of:
- a clutch and/or a brake, and
- wherein the at least one of the clutch and/or the brake is operable based on changing a viscosity of a magnetorheological (MR) fluid.
Dependencies are inferred from the claim text.