Structural damper
AssigneeBAE SYSTEMS plc
InventorsStephen Daley, Kristian Edward Hook, Jordan Cheer
Life of this patent
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Abstract
A structural damper (2) having an acoustic black hole (5), at least one sensor (7), a damper structure (4), an actuator (8) configured to apply an actuating force to the damper structure (4) and a controller (H) configured to control the actuator in dependence on a signal from the at least one sensor so as to provide structural damping of a primary structure (3).
Claims20
A structural damper comprising:
- an acoustic black hole;
- at least one sensor;
- a damper structure;
- an actuator configured to apply an actuating force to the damper structure at a different location to the acoustic black hole;
- and
- a controller configured to control the actuator in dependence on a signal from the at least one sensor so as to provide structural damping of a primary structure.
The structural damper according to 3, wherein the controller is configured to control the acoustic radiation from the primary structure.
A structural damper comprising:
- an acoustic black hole;
- at least one sensor configured to sense acoustic radiation from a primary structure;
- a damper structure;
- an actuator configured to apply an actuating force to the damper structure;
- and
- a controller configured to calculate a radiated sound field from the primary structure in dependence on a signal from the at least one sensor and control the actuator, so as to provide structural damping of the primary structure.
A method of providing structural damping to a primary structure, using a structural damper, the structural damper comprising:
- an acoustic black hole;
- at least one sensor;
- a damper structure;
- and an actuator configured to apply an actuating force to the damper structure at a location different from a location of the acoustic black hole;
- wherein the method comprises:
- controlling the actuator in dependence on a signal from the at least one sensor so as to provide structural damping of a primary structure.
Dependencies are inferred from the claim text.