Isolation system and method thereof
First Claim
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1. A vibration isolation system comprising:
- a platform;
a plurality of isolators for supporting the platform, electronically switchable between a soft mode of isolation resulting in a first natural frequency and a stiff mode of isolation resulting in a second natural frequency, wherein each of said plurality of isolators includes a flexible diaphragm, a first chamber supporting the flexible diaphragm, a second chamber serving as a reservoir, and a valve connected to an air supply, to the first chamber, and to the second chamber and operable to by-pass the second chamber to more quickly direct the supply to the first chamber; and
a controller responsive to a signal representing the frequency of a machine on the platform and configured to;
switch the isolator to the stiff mode of operation when the frequency of the machine approaches or reaches, the first natural frequency to avoid resonance magnification, andotherwise switch the isolator to the soft mode of operation.
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Abstract
An isolation system includes a platform, a plurality of isolators for the platform electronically switchable between a soft mode of isolation resulting in a first natural frequency and a stiff mode of isolation resulting in a second natural frequency, and a controller responsive to a signal representing the frequency of a machine on the platform and configured to switch the isolator to the stiff mode of operation when the frequency of the machine approaches or reaches, the first natural frequency to avoid resonance magnification, and otherwise switch the isolation to the soft mode of operation.
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10 Claims
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1. A vibration isolation system comprising:
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a platform; a plurality of isolators for supporting the platform, electronically switchable between a soft mode of isolation resulting in a first natural frequency and a stiff mode of isolation resulting in a second natural frequency, wherein each of said plurality of isolators includes a flexible diaphragm, a first chamber supporting the flexible diaphragm, a second chamber serving as a reservoir, and a valve connected to an air supply, to the first chamber, and to the second chamber and operable to by-pass the second chamber to more quickly direct the supply to the first chamber; and a controller responsive to a signal representing the frequency of a machine on the platform and configured to; switch the isolator to the stiff mode of operation when the frequency of the machine approaches or reaches, the first natural frequency to avoid resonance magnification, and otherwise switch the isolator to the soft mode of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification