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US 8,095,268 B2Granted
Active suspending
AssigneeBose Corporation
InventorsJames A. Parison, Christopher J. Breen, Richard F. O'Day
Life of this patent
Estimating the term…
Abstract
An apparatus includes a force bias element coupled to a plant in a vehicle. The force bias element has a first bandwidth. An active suspension includes a linear electromagnetic actuator located within an interior of the force bias element. The linear electromagnetic actuator has a second bandwidth that is higher than the first bandwidth and is coupled to the plant.
Claims15
An apparatus comprising:
- a force bias eliminator having the properties of a low stiffness adjustable spring coupled to a plant in a vehicle, the force bias eliminator having a first bandwidth, and
- an active suspension including a linear electromagnetic actuator located within an interior of the force bias eliminator, the linear electromagnetic actuator having a second bandwidth higher than the first bandwidth and being coupled to the plant,
- in which the active suspension also includes power electronics located within the interior of the force bias eliminator.
An apparatus comprising:
- a force bias eliminator having a first bandwidth coupled to a plant in a vehicle;
- an active suspension including an electromagnetic actuator coupled to the plant and having a second bandwidth that is higher than the first bandwidth, the electromagnetic actuator providing an actuation force, and a motion of the electromagnetic actuator being within a 45 degree phase angle of a motion of a center of gravity of the plant.
A method comprising:
- causing a force bias element with the mechanical properties of a low stiffness adjustment spring to be coupled to a plant to operate at a first frequency range;
- causing an electromagnetic actuator coupled to the plant to operate at a second frequency range higher than the first frequency range such that a motion of the electromagnetic actuator is within a 45 degree phase angle of a motion of a center of gravity of the plant.
Dependencies are inferred from the claim text.