NDLI: Stirling-cycle cryocooler active vibration control

Content Provider	IEEE Xplore Digital Library
Author	Wu, A.
Copyright Year	1994
Description	Author affiliation: Aerospace & Defense Sector, Hughes Aircraft Co., El Segundo, CA, USA (Wu, A.)
Abstract	A cryogenic cooler capable of continuously maintaining the required cryogenic temperature is one of the critical elements enabling space-borne surveillance sensors to detect cold objects against a space background or warm objects against an Earth background. The performance of these sensors, however, can be greatly degraded by the vibration of typical mechanical cryocoolers. "Balanced" Stirling-cycle cryocoolers produce significant residual vibration at the harmonics of the fundamental drive frequency due to various nonlinearities which are not compensated by a simple oscillating balance mass. Techniques to sufficiently suppress these vibrations are required for high performance surveillance sensors. This paper examines two very effective control techniques in dealing with the residual vibration force suppression. The first technique uses the narrowband feedback principle to design a force servo compensator which produces a notch filtering effect at each of the harmonic frequencies. The second technique uses the adaptive feedforward principle to inject harmonic signals into one of the cryocooler motor drives to produce a complete force cancellation. The concepts and designs of both control techniques are discussed, and test results of the vibration suppression performance on the Hughes IR&D cooler are presented.<>
Starting Page	545
Ending Page	549
File Size	422938
Page Count	5
File Format	PDF
ISBN	0780318722
DOI	10.1109/CCA.1993.348346
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-09-13
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibration control Mechanical sensors Power harmonic filters Cryogenics Temperature sensors Surveillance Frequency Force sensors Force feedback Object detection
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Stirling-Cycle Cryocooler Active Vibration Control

Active temperature control of Stirling-cycle cryocoolers

Demonstration of Active Vibration Control on a Stirling-Cycle Cryocooler Testbed

Output feedback control of a three-phase shunt active power filter

Dual-frequency shear wave motion detection

The design and research of the Hybrid Active Power Filters

A novel harmonic current detection method and control strategy for active power filter

A predictive dead-beat PI current controller for active power filters

A State Feedback Control of Single Phase Active Power Filter under Non-stiff Supply

Stirling-cycle cryocooler active vibration control

Similar Documents

Stirling-Cycle Cryocooler Active Vibration Control

Active temperature control of Stirling-cycle cryocoolers

Demonstration of Active Vibration Control on a Stirling-Cycle Cryocooler Testbed

Output feedback control of a three-phase shunt active power filter

Dual-frequency shear wave motion detection

The design and research of the Hybrid Active Power Filters

A novel harmonic current detection method and control strategy for active power filter

A predictive dead-beat PI current controller for active power filters

A State Feedback Control of Single Phase Active Power Filter under Non-stiff Supply

Stirling-cycle cryocooler active vibration control