EIA-364-28E 電子連接器振動測試方法-中英

standspecifiedseveritiesofvibration.件承受特定強(qiáng)度振動的能力。uencyrangesandmagnitudesthatmaybeencounteredduringthelifeoftheconnector.振動幅度的環(huán)境，以此驗(yàn)證對產(chǎn)品性能的影響情況.catesapictorialviewoftheaxisdefinitions.Thereferencingdocumentshallindicatethefixturingrequiredortheaxisdefini軸向與圖1不同，則在相關(guān)參考文件中需對試驗(yàn)裝置要求及軸向進(jìn)行定義。對于具有對稱性，方形及不規(guī)則的連接andgeographiclatitude.evibrationsystemconsistingofthevibrationmachine,togetherwithitsauxiliarytestequipment,shallbecapabl設(shè)備，整個系統(tǒng)應(yīng)能產(chǎn)生正弦或隨機(jī)振動。mplitudedistribution,exceptthattheaccelerationmagnitudesofthepeakvaluesmaybelimitedtoaminimumofthree可限mblyofthesample.Ifnormalconnectormatingisdependentuponforcesexternaltotheconnector,thensuchforcesan器的連接方式需要依靠外力，那么這些外力與連接方式應(yīng)盡可能模擬實(shí)際的狀況(例如：印刷電路連接器)。若是etestfixtureshallbedesignedsothatresonantvibrationinherentinthefixturewithinthefrequencyrangespeciflyaspossiblethenormalmountingofthespecimen.Aminimumof200mm(approx8in)ofwireorcableshallbeunsupporteonthemountingfixtureintheproximityofthesupportpointsofthespecimen.共振頻率在試驗(yàn)所規(guī)定的頻率范圍內(nèi)達(dá)到最小。在試驗(yàn)夾具上接近樣品的地方監(jiān)控所施加的振動強(qiáng)度。樣品安裝應(yīng)點(diǎn)的地方監(jiān)控振動輸入。oftheappliedvibrationmotionshallbespecifiedinoneormoredirections.Iftheorderofapplicationofthediffereimensions,thematerials,temper,etc.,asapplicable.方向。如果朝不同方向施加的次序很重要，那就應(yīng)該規(guī)定不同方向的先后順序。對于進(jìn)行試驗(yàn)所要求的任何特殊試liamperes,maximumforallcontacts.eaterdurationareallowed.Adetectorcapableofdetectingthespecifieddiscontinuityshallbeused.于aximumamplitudemorethantwicethatofthesupportpoints.Whenspecified,resonantfrequenciesshallbedeterminedeitherbymonit的振幅的2倍還要大.當(dāng)有規(guī)定時(shí),共振頻率應(yīng)采用監(jiān)控參數(shù)的方法,或采用共振檢測儀的方法來確定共振頻率。ubleamplitude(maximumtotalexcursion),thefrequencybeingvarieduniformlybetweentheapproximatelimitsof10Hzand55Hz.Tlardirections(totalof6hours).Ifapplicable,thistestshallbemadeunderelectricalloadconditions.內(nèi)(從10至55,再從55至10)約歷時(shí)1分鐘.除非另有規(guī)定,在相互垂直的三個方法上各振動2小時(shí)(總共6小時(shí)).如果適用,振othevibrationamplitude,frequencyrange,anddurationspecifiedandandrespectively;seefigures2and3.間的振動，見圖2和圖30.06in)doubleamplitude(maximumtotalexcursion)or98.1m/s2(10gn)peak,whicheverisless.Thetoleranceonvibrationamplitude振幅的容許誤差為±10%.500Hz(seeexceptthattheprocedure(seeofthisstandardmaybeappliedduringthe10Hzto55Hzbandofthevibrationfrequencyrange.定的程序進(jìn)行.ycleshallbeperformed12timesineachofthreemutuallyperpendiculardirections(totalof36times),sothatthemotionshallbeappliedfingtothenextband.Whentheprocedure(seeisusedforthe10Hzto55Hzband,thedurationofthisportionshallbesameasthedurationfor環(huán)12次(總共36次),因此整個試驗(yàn)過程歷時(shí)9小時(shí).只要能滿足振動頻率及速度的變化和總的試驗(yàn)時(shí)間要求,就允許試驗(yàn)一個方向約1.33小時(shí)).othevibrationamplitude,frequencyrange,anddurationspecifiedinrespectively;seefigures2and3..振幅的容許誤差為±10%.。000Hz(seeexceptthattheprocedure(seeofthisstandardmaybeappliedduringthe10Hzto55Hzbandofthevibrationfrequencyrange.定的程序進(jìn)行。scycleshallbeperformed12timesineachofthreemutuallyperpendiculardirections(totalof36times),sothatthemotionshallbeappliedgoingtothenextband.Whentheprocedure(seeofthisstandardisusedforthe10Hzto55Hzband,thedurationofthisportionshallbethesa各循環(huán)12次(總共36次),因此整個試驗(yàn)過程歷時(shí)12小時(shí).只要能滿足振動頻率及速度變化和總的試驗(yàn)時(shí)間要求，就允許垂直的每一個方向約1.33小時(shí))。othevibrationamplitude,frequencyrange,anddurationspecifiedinandrespectively;seefigures2and3.0.06in)doubleamplitude(maximumtotalexcursion)or196.1m/s2(20gn)peak,whicheverisless.Thetoleranceonvibrationamplitud.振幅的容許誤差為±10%。定的程序進(jìn)行。scycleshallbeperformed12timesineachofthreemutuallyperpendiculardirections(totalof36times),sothatthemotionshallbeapplie上變化和總的試驗(yàn)時(shí)間要求，就允許試驗(yàn)間斷進(jìn)行。eprocedure(seeofthisstandardisusedforthe10Hzto55Hzband,thedurationofthisportionshallbethesameasthedurationforthisbandu程序進(jìn)行振動時(shí)，這一頻段持續(xù)的時(shí)間與采用對數(shù)循環(huán)的時(shí)間相同(在三個互相垂直的每一個方向約1.33小時(shí))。aximumfrequencytotheminimumfrequencyineachbandshallbenotlessthantwo(2).比不小于2。eapproximatelyequal.videdintothreebands,55Hzto125Hz,125Hzto500Hzand500Hzto2,000Hz,inaccordancewithForeachband,lettheconstant,:ntheratesofchangeforthethreebandswillbel25k,500kand2,000k,respectively.Thetimes(inminutes)totraversethethreefrequperminute,34.2Hzperminuteand137Hzperminute,respectively.Theminimumtimesoftraverseofthebandsare8.2min,10.9minand頻段,令頻率的變化率與該段頻段的最高頻率之比值為k,則三個頻段的頻率變化率分別為125k、500k及2000k，各頻頻率變化率分別為8.55Hz/分鐘、34.2Hz/分鐘和137Hz/分鐘，經(jīng)過三個頻段的時(shí)間分別為8.2分鐘、10.9分鐘和10.equency;seeThespectral-densityvaluesshallbewithin+40%and-30%(±l.5dB)ofthespecifiedvaluesbetweenalower-specifiedfrwidthwillbeamaximumofl/3-octaveorafrequencyof25Hz,whicheverisgreater.z之間時(shí)，頻譜密度的值應(yīng)介于規(guī)定值的+40%和-30%以內(nèi)(±1.5dB)?頻率位于1000Hz與上限頻率(2000Hz)之間時(shí)，；unit-filterbandwidth.Forthisapplicationitisexpressedasg2/f,whereg2/fisthemean-h.Thespectraldensitycurvesareusuallyplottedeitheronalogarithmicscale,orinunitsofdecibels(dB).Thenumberofdecibelsisdefine.濾波器帶寬的每一次循環(huán)周期中所通過的以重力單位表示的加速度均方值.頻譜密度曲線通常以對數(shù)坐標(biāo)或以分貝為f)，gr2/f為給定的參考頻譜密度，通常為所給定的最大值。1curve.Theexperimentally-obtainedcurveshallnotdifferfromthegaussiancurvebymorethan±l0%ofthemaximumvalue.斯分布曲線相差最大不得超過±10%。nrequiredinthereferencingdocument,thespecimenmaybemonitoredduringthetest.Thedetailsofthemonitoringcircuit,includingth連接試驗(yàn)樣品的方法及連接點(diǎn)等。sthatareasnearaspracticabletothetestitemmountingpoints.Whenthevibrationinputismeasuredatmorethanonepoint,theminimumemaybeanaverageoftheaveragemagnitudesofthreeormoreinputs.Accelerationsinthetransversedirection,measuredatthetestitem點(diǎn)。當(dāng)在一個以上的點(diǎn)測量振動輸入時(shí)，應(yīng)使最小的振動輸入符合試驗(yàn)曲線的規(guī)定(見圖4和圖5)。對于大重量的0%以內(nèi)，同時(shí)應(yīng)規(guī)定試驗(yàn)點(diǎn)的位置和數(shù)量。ingequipmentattached,ifapplicable,inaccordancewithThevibrationmachineshallthenbeoperatedandequalizedorcompensatedtotothevibrationspecifiedbythetestconditionletter(seetables2,3and4)forthedurationasspecified:Ineachofthreemutuallyperpendic嘰，以便傳遞規(guī)定的振動頻率和強(qiáng)度(條件V或VI或VII,見圖4或圖5或圖6)。最后將試驗(yàn)樣品按規(guī)定的時(shí)間和方向承onitoredduringthetest,thedetailsshallbeinaccordancewith按的規(guī)定。lliamperesforallcontacts.s的斷路現(xiàn)象。aterduratio