System and method of active vibration control for an electro-mechanically cooled device

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873301

Lavietes, Anthony D ^[1]; Mauger, Joseph ^[2]; Anderson, Eric H ^[3]

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1. Hayward, CA
2. Livermore, CA
3. Mountain View, CA

A system and method of active vibration control of an electro-mechanically cooled device is disclosed. A cryogenic cooling system is located within an environment. The cooling system is characterized by a vibration transfer function, which requires vibration transfer function coefficients. A vibration controller generates the vibration transfer function coefficients in response to various triggering events. The environments may differ by mounting apparatus, by proximity to vibration generating devices, or by temperature. The triggering event may be powering on the cooling system, reaching an operating temperature, or a reset action. A counterbalance responds to a drive signal generated by the vibration controller, based on the vibration signal and the vibration transfer function, which adjusts vibrations. The method first places a cryogenic cooling system within a first environment and then generates a first set of vibration transfer function coefficients, for a vibration transfer function of the cooling system. Next, the cryogenic cooling system is placed within a second environment and a second set of vibration transfer function coefficients are generated. Then, a counterbalance is driven, based on the vibration transfer function, to reduce vibrations received by a vibration sensitive element.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 6131394
• OSTI ID: 873301
• Country of Publication: United States
• Language: English

Related Subjects

method
active
vibration
control
electro-mechanically
cooled
device
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cryogenic
cooling
located
environment
characterized
transfer
function
requires
coefficients
controller
generates
response
various
triggering
events
environments
mounting
apparatus
proximity
generating
devices
temperature
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powering
reaching
operating
reset
action
counterbalance
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drive
signal
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based
adjusts
vibrations
set
placed
driven
reduce
received
sensitive
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cryogenic cooling
transfer function
operating temperature
signal generated
mounting apparatus
vibration signal
sensitive element
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drive signal
vibration control
electro-mechanically cooled
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active vibration
cooled device
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