Active seal assemblies for sound isolation
First Claim
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1. An active seal assembly for sound isolation, comprising:
- a flexible hollow body comprising an interior wall longitudinally bifurcating said body and defining in part a first chamber and a second chamber within said body;
a sensor disposed in an exterior wall of the body and in operative communication with a controller, wherein the sensor detects an amplitude and a phase of a noise vibration and sends a signal corresponding to the amplitude and the phase to the controller; and
an active material disposed within the interior wall and in operative communication with the controller, wherein the active material and interior wall cooperatively cancel the noise vibration in response to an activation signal from the controller.
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Abstract
Active seal assemblies employing active materials that can be controlled and remotely changed to alter the seal effectiveness, wherein the active seal assemblies actively change modulus properties such as stiffness, shape orientation, and the like. The active seal assemblies are generally configured to reduce the noise (sound waves) that is transmitted through the seal by measuring and actively canceling and/or absorbing the noise.
49 Citations
9 Claims
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1. An active seal assembly for sound isolation, comprising:
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a flexible hollow body comprising an interior wall longitudinally bifurcating said body and defining in part a first chamber and a second chamber within said body; a sensor disposed in an exterior wall of the body and in operative communication with a controller, wherein the sensor detects an amplitude and a phase of a noise vibration and sends a signal corresponding to the amplitude and the phase to the controller; and an active material disposed within the interior wall and in operative communication with the controller, wherein the active material and interior wall cooperatively cancel the noise vibration in response to an activation signal from the controller. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An active seal assembly for sound isolation, comprising:
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a flexible hollow body comprising a base portion and an interior wall, said interior wall longitudinally bifurcating said body and defining in part a first chamber and a second chamber within said body; a normal force sensor disposed in an exterior wall of the body and in operative communication with a controller, wherein the normal force sensor detects sound waves and sends a signal corresponding to the amplitudes and frequencies associated with the sound waves to the controller, wherein the controller averages the amplitudes and frequencies associated with the waves; and an active material disposed within the interior wall and in operative communication with the controller, wherein the active material is absorbs the waves in response to an activation signal from the controller. - View Dependent Claims (9)
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Specification