Chinese Space Science and Technology ›› 2017, Vol. 37 ›› Issue (4): 63-68.doi: 10.16708/j.cnki.1000-758X.2017.0059

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Adaptiveactivevibrationcontrolmethodforcryocoolercompressorinspace

 NI  Tian-Zhi1,2, YANG  Bao-Yu1,*   

  1. 1ShanghaiInstituteofTechnologicalPhysics,ChineseAcademyofSciences,Shanghai200083,China
    2UniversityofChineseAcademyofSciences,Beijing100049,China
  • Received:2016-12-19 Revised:2017-02-20 Published:2017-08-25 Online:2017-06-29

Abstract: Thevibrationofcryocoolercompressorisoneofthecriticalfactorduringtheapplicationinsensitiveinstruments.Compressorvibrationwillleadtoimagingblur,affectthepointingaccuracyandresolutionofthetarget,andevencausethemechanicalresonanceoftheplatform.Inordertoreducetheimpactofcryocoolervibrationonspacepayloadsensitivedevices,anadaptiveactivevibrationcontrolalgorithmbasedonadaptivenarrowbandnotchfilterwasadopted.Thealgorithmisindependentofthevibrationtransferfunctionmodelandisnotlimitedbytheapplicationenvironment.Theadaptivevibrationcontrolisrealizedbyadjustingtheamplitudeandphaseofthedrivingsignalconstantly.Thecontrolsystem,includingDSPcontrolsoftware,electroniccircuitandtransducer,wassetup,andtheexperimentprovedtheeffectivenessofthealgorithmwhichwasfirstusedtocompressorvibrationcontrol.Thefundamentalfrequencyvibrationofthecompressorhasreducedfrom0.166m/s2to0.014m/s2,byafactorof21.2dB.

Key words: compressor, activevibrationcontrol, adaptivecontrol, vibrationcontrol, narrowbandnotchfilter