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US 7,017,421 B2Granted
Actuator and sensor system for composite structures
AssigneeEADS Deutschland GmbH
InventorMichael Kehlenbach
Life of this patent
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Abstract
An actuator and sensor system (1) for composite structures, especially carbon-fiber reinforced plastic structures (10) with piezo-ceramic actuators, particularly for active vibration dampening and/or shape control purposes, as well as fiber Bragg grating sensors (30), particularly in the form of strain measurement sensors. The piezo-ceramic actuators are designed as piezo fiber modules (20a, 20b) and the fiber Bragg grating sensors (30) are at least partially embedded in the piezo fiber modules (20a, 20b).
Claims8
A composite structure actuator and sensor system, comprising:
- at least one piezo fiber module each including a plurality of fibers;
- at least one fiber Bragg grating sensor wherein said at least one grating sensor is at least partially embedded in said at least one piezo fiber module, in order to provide for at least one of active vibration damping and shape control of said composite structure, wherein the piezo fiber modules are piezo-ceramic fibers that are embedded into a polymer and are arranged substantially parallel and wherein electrodes contact and run crosswise to the piezo-ceramic fibers.
Dependencies are inferred from the claim text.