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基本概念和基礎知識 一(yi)、

常見的(de)工程物理量 力(li)(li)、壓(ya)力(li)(li)、應力(li)(li)、應變、位移、速度(du)、加速度(du)、轉(zhuan)速等 

(一(yi)) 力:力是物體(ti)間的(de)相互(hu)作用,是一(yi)個廣義(yi)的(de)概(gai)念。物體(ti)承受的(de)力可以(yi)有(you)加(jia)載力, 也可以(yi)有(you)動(dong)態(tai)力,我們常測試(shi)的(de)力主要是動(dong)態(tai)力,即給(gei)結(jie)構(gou)施加(jia)力,激發結(jie)構(gou)的(de)某些(xie) 特性(xing)(xing),便于測試(shi)了解其結(jie)構(gou)特性(xing)(xing),如模(mo)態(tai)試(shi)驗用的(de)力錘。 

(二) 應力(li)應變(bian)(bian)(bian):材料(liao)或(huo)構件在單(dan)(dan)位截面上所承受的(de)(de)垂(chui)直作用力(li)稱為(wei)應力(li)。在外力(li)作用 下(xia),單(dan)(dan)位長(chang)度材料(liao)的(de)(de)伸(shen)長(chang)量(liang)(liang)或(huo)縮(suo)短(duan)量(liang)(liang),稱為(wei)應變(bian)(bian)(bian)量(liang)(liang)。在一定的(de)(de)應力(li)范圍(彈(dan)性形變(bian)(bian)(bian)) 內,材料(liao)的(de)(de)應力(li)與應變(bian)(bian)(bian)量(liang)(liang)成正(zheng)比,它(ta)們的(de)(de)比例常數稱為(wei)彈(dan)性模量(liang)(liang)或(huo)彈(dan)性系(xi)數。 

(三) 振動(dong)位(wei)(wei)(wei)(wei)(wei)移(yi):位(wei)(wei)(wei)(wei)(wei)移(yi)就(jiu)是質(zhi)量塊運動(dong)的(de)總的(de)距離(li),也就(jiu)是說當質(zhi)量塊振動(dong)時(shi),位(wei)(wei)(wei)(wei)(wei)移(yi)就(jiu) 是質(zhi)量塊上(shang)、下(xia)運動(dong)有多遠。位(wei)(wei)(wei)(wei)(wei)移(yi)的(de)單(dan)位(wei)(wei)(wei)(wei)(wei)可(ke)以用(yong) ?m 表示。進一(yi)步可(ke)以從振動(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)的(de) 時(shi)間(jian)波(bo)形推出振動(dong)的(de)速(su)度和(he)加速(su)度值。 1 可(ke)以是靜態(tai)位(wei)(wei)(wei)(wei)(wei)移(yi),可(ke)以是動(dong)態(tai)位(wei)(wei)(wei)(wei)(wei)移(yi)。通常我們測試的(de)都是動(dong)態(tai)位(wei)(wei)(wei)(wei)(wei)移(yi)量。有角(jiao)位(wei)(wei)(wei)(wei)(wei)移(yi)、線位(wei)(wei)(wei)(wei)(wei)移(yi) 等。 

(四(si)) 振動(dong)(dong)速(su)度:質(zhi)量(liang)(liang)塊在(zai)(zai)振蕩過程中(zhong)運(yun)動(dong)(dong)快(kuai)慢的(de)(de)度量(liang)(liang)。質(zhi)量(liang)(liang)塊在(zai)(zai)運(yun)動(dong)(dong)波形的(de)(de)上部(bu)和下 部(bu)極(ji)限位(wei)置時,其速(su)度為(wei) 0,這是因(yin)為(wei)質(zhi)量(liang)(liang)塊在(zai)(zai)這兩點處,在(zai)(zai)它改變運(yun)動(dong)(dong)方(fang)向之前, 必須停下來。質(zhi)量(liang)(liang)塊的(de)(de)振動(dong)(dong)速(su)度在(zai)(zai)平衡(heng)位(wei)置處達(da)到(dao)最大值(zhi)(zhi),在(zai)(zai)此(ci)(ci)點處質(zhi)量(liang)(liang)塊已經加速(su) 到(dao)最大值(zhi)(zhi),在(zai)(zai)此(ci)(ci)點以后質(zhi)量(liang)(liang)塊開(kai)始減速(su)運(yun)動(dong)(dong)。振動(dong)(dong)速(su)度的(de)(de)單位(wei)是用 mm/s 來表示。 

(五) 振動(dong)加速度(du):被定義為振動(dong)速度(du)的(de)變(bian)化率,其(qi)單位是用有多少個 m/s2 或 g 來(lai)表 示。由(you)下圖可見加速度(du)最大值處(chu)是速度(du)值最小值的(de)地(di)方,在這(zhe)些點(dian)處(chu)質量塊由(you)減速到 停止然后再開始(shi)加速。 

(六(liu)) 轉(zhuan)速:旋轉(zhuan)機械(xie)的轉(zhuan)動速度 

(七)簡諧振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)及振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)三(san)要(yao)(yao)素(su)(su) 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)是(shi)(shi)(shi)(shi)一(yi)種運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)形(xing)式(shi)(shi)――往復運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong) 2 d=Dsin(2πt/T+Φ ) D――振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最大(da)(da)(da)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi),稱(cheng)(cheng)(cheng)(cheng)為(wei)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu) T――振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)周(zhou)期(qi)(qi),完成(cheng)(cheng)一(yi)次全振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)所需(xu)要(yao)(yao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)(shi)間(jian)(jian)(jian) f――單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)時(shi)(shi)間(jian)(jian)(jian)內(nei)(nei)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)次數(shu)(shu),即(ji)(ji)(ji)周(zhou)期(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)倒數(shu)(shu)為(wei)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv), f = 1/T (Hz) (1) 頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv) f 又可用(yong)(yong)(yong)(yong)角頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)來(lai)(lai)表(biao)(biao)(biao)(biao)示,即(ji)(ji)(ji) ω = 2π/T (rad/s) ω 和(he) f 的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)關系(xi)(xi)為(wei) ω = 2πf f = ω/2π (rad/s) (Hz) (2) (3) 將式(shi)(shi)(1)(2)(3)代(dai)入式(shi)(shi)可得 、 、 d = Dsin(ωt+Φ )=Dsin(2πft+Φ ) 可以(yi)用(yong)(yong)(yong)(yong)正(zheng)(zheng)(zheng)玄或(huo)(huo)(huo)(huo)余玄函數(shu)(shu)描(miao)述的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)過(guo)程(cheng)(cheng)(cheng)稱(cheng)(cheng)(cheng)(cheng)之(zhi)(zhi)為(wei)簡諧振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong) 3 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)三(san)要(yao)(yao)素(su)(su):振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu) D、頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv) f 和(he)相(xiang)(xiang)位(wei)(wei)(wei)(wei)(wei)Φ (八) 、表(biao)(biao)(biao)(biao)示振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)參(can)數(shu)(shu):位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)、速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)、加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du) 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi): d = Dsin ? t D 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du): v = D ? cos ? t =Vsin( ? t + V= D ? 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du):a = -D ? 2sin ? t =Asin( ? t +π) A=-D ? 2 (九) 1、 ? ) 2 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)三(san)要(yao)(yao)素(su)(su)在(zai)(zai)(zai)(zai)工程(cheng)(cheng)(cheng)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)中(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)意(yi)義 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu) ○ 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu)~物(wu)體(ti)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)態(tai)運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)或(huo)(huo)(huo)(huo)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)幅(fu)(fu)(fu)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)。 ★ 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu)是(shi)(shi)(shi)(shi)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)強(qiang)(qiang)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)和(he)能量(liang)(liang)(liang)水平(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)標志, 是(shi)(shi)(shi)(shi)評價機(ji)(ji)(ji)器運(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)狀態(tai)優(you)劣的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)主(zhu)要(yao)(yao)指標。 即(ji)(ji)(ji)“有(you)(you)(you)沒有(you)(you)(you)問題(ti)看(kan)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu)” 。 ○ 峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)、單(dan)(dan)(dan)(dan)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)、有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi) 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)量(liang)(liang)(liang)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)可以(yi)表(biao)(biao)(biao)(biao)示為(wei)峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(pp) 、 單(dan)(dan)(dan)(dan)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi) (p) 有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi) 、 (rms) 或(huo)(huo)(huo)(huo)平(ping)(ping)(ping)均(jun)(jun)(jun)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi) (ap) 。 峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)是(shi)(shi)(shi)(shi)整個振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)歷程(cheng)(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最大(da)(da)(da)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi),即(ji)(ji)(ji)正(zheng)(zheng)(zheng)峰(feng)(feng)(feng)(feng)(feng)(feng) 與(yu)(yu)(yu)(yu)負峰(feng)(feng)(feng)(feng)(feng)(feng)之(zhi)(zhi)間(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)差值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi);單(dan)(dan)(dan)(dan)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)是(shi)(shi)(shi)(shi)正(zheng)(zheng)(zheng)峰(feng)(feng)(feng)(feng)(feng)(feng)或(huo)(huo)(huo)(huo)負峰(feng)(feng)(feng)(feng)(feng)(feng) 的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最大(da)(da)(da)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi);有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)即(ji)(ji)(ji)均(jun)(jun)(jun)方(fang)根值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。 ○ 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)、振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)、振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du) 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu)分(fen)(fen)別用(yong)(yong)(yong)(yong)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)、振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)、振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen) 動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)加(jia)(jia)(jia)以(yi)描(miao)述、度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)量(liang)(liang)(liang),三(san)者(zhe)(zhe)相(xiang)(xiang)互(hu)(hu)之(zhi)(zhi)間(jian)(jian)(jian)可以(yi)通過(guo)微(wei)分(fen)(fen)或(huo)(huo)(huo)(huo)積分(fen)(fen)進行(xing)換(huan)(huan)算。在(zai)(zai)(zai)(zai)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)測(ce)(ce)量(liang)(liang)(liang)中(zhong), 除特別注(zhu)明外,習(xi)慣上(shang)(shang): 4 ○ 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)量(liang)(liang)(liang)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)為(wei)峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi),單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)是(shi)(shi)(shi)(shi)微(wei)米[μm]或(huo)(huo)(huo)(huo)毫(hao)米 [mm]; ○ 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)量(liang)(liang)(liang)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)為(wei)有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(均(jun)(jun)(jun)方(fang)根值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)) ,單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)是(shi)(shi)(shi)(shi)毫(hao)米/秒(miao)(miao)[mm/s]; ○ 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du) 的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)量(liang)(liang)(liang)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)是(shi)(shi)(shi)(shi)單(dan)(dan)(dan)(dan)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi),單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)是(shi)(shi)(shi)(shi)米/秒(miao)(miao)平(ping)(ping)(ping)方(fang) [m/s2]或(huo)(huo)(huo)(huo)重(zhong)(zhong)力(li)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du) [g],1[g] = 9.81[m/s2]。 ○ 峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)、有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)、單(dan)(dan)(dan)(dan)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)三(san)者(zhe)(zhe)之(zhi)(zhi)間(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)量(liang)(liang)(liang)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)關系(xi)(xi) 單(dan)(dan)(dan)(dan)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)=峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)/2, 有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)=0.707 峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)=1.414 有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)) 平(ping)(ping)(ping)均(jun)(jun)(jun)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)=0.637 峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi), 平(ping)(ping)(ping)均(jun)(jun)(jun)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)應用(yong)(yong)(yong)(yong)較少。 △ 在(zai)(zai)(zai)(zai)低頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)范圍內(nei)(nei),振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)強(qiang)(qiang)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)與(yu)(yu)(yu)(yu)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)成(cheng)(cheng)正(zheng)(zheng)(zheng)比(bi); △ 在(zai)(zai)(zai)(zai)中(zhong)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)范圍內(nei)(nei),振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)強(qiang)(qiang)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)與(yu)(yu)(yu)(yu)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)成(cheng)(cheng)正(zheng)(zheng)(zheng)比(bi); △ 在(zai)(zai)(zai)(zai)高(gao)(gao)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)范圍內(nei)(nei),振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)強(qiang)(qiang)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)與(yu)(yu)(yu)(yu)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)成(cheng)(cheng)正(zheng)(zheng)(zheng)比(bi)。 頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)低意(yi)味(wei)(wei)著振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)體(ti)在(zai)(zai)(zai)(zai)單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)時(shi)(shi)間(jian)(jian)(jian)內(nei)(nei)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)次數(shu)(shu)少、過(guo)程(cheng)(cheng)(cheng)時(shi)(shi)間(jian)(jian)(jian)長,速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)、加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)數(shu)(shu)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi) 相(xiang)(xiang)對較小(xiao),因此(ci)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)能夠更(geng)清(qing)晰地反(fan)映(ying)出振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)強(qiang)(qiang)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)小(xiao);而(er)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)高(gao)(gao),意(yi)味(wei)(wei)著振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong) 次數(shu)(shu)多(duo)、過(guo)程(cheng)(cheng)(cheng)短,速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)、尤(you)其(qi)是(shi)(shi)(shi)(shi)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)數(shu)(shu)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)及變化量(liang)(liang)(liang)大(da)(da)(da),因此(ci)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)強(qiang)(qiang)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)與(yu)(yu)(yu)(yu)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du) 成(cheng)(cheng)正(zheng)(zheng)(zheng)比(bi)。 △ 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)反(fan)映(ying)了(le)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)距離(間(jian)(jian)(jian)隙)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)小(xiao),振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)反(fan)映(ying)了(le)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)能量(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)小(xiao),振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong) 加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)反(fan)映(ying)了(le)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)沖擊力(li)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)小(xiao)。 在(zai)(zai)(zai)(zai)實(shi)(shi)際應用(yong)(yong)(yong)(yong)中(zhong): △ 大(da)(da)(da)型旋(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)機(ji)(ji)(ji)械的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)用(yong)(yong)(yong)(yong)裝在(zai)(zai)(zai)(zai)軸承(cheng)座上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)渦流(liu)式(shi)(shi)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)傳(chuan)(chuan)(chuan)感(gan)器來(lai)(lai)測(ce)(ce)量(liang)(liang)(liang)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(軸)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong), 用(yong)(yong)(yong)(yong)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)(wei)(wei)(wei)移(yi)(yi)(yi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)峰(feng)(feng)(feng)(feng)(feng)(feng)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)[μm]表(biao)(biao)(biao)(biao)示; △ 一(yi)般轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)設(she)備的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)用(yong)(yong)(yong)(yong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)傳(chuan)(chuan)(chuan)感(gan)器、 如(ru)(ru)今主(zhu)要(yao)(yao)是(shi)(shi)(shi)(shi)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)傳(chuan)(chuan)(chuan)感(gan)器在(zai)(zai)(zai)(zai)殼體(ti)上(shang)(shang)靠近(jin)軸承(cheng)處來(lai)(lai) 測(ce)(ce)量(liang)(liang)(liang),用(yong)(yong)(yong)(yong)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)[mm/s]表(biao)(biao)(biao)(biao)示; △ 齒輪的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)用(yong)(yong)(yong)(yong)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)傳(chuan)(chuan)(chuan)感(gan)器在(zai)(zai)(zai)(zai)殼體(ti)上(shang)(shang)測(ce)(ce)量(liang)(liang)(liang),用(yong)(yong)(yong)(yong)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)加(jia)(jia)(jia)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)單(dan)(dan)(dan)(dan)峰(feng)(feng)(feng)(feng)(feng)(feng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)[m/s2]或(huo)(huo)(huo)(huo)[g]表(biao)(biao)(biao)(biao)示, 或(huo)(huo)(huo)(huo)用(yong)(yong)(yong)(yong)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)有(you)(you)(you)效值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)[mm/s]表(biao)(biao)(biao)(biao)示。 2、頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv) ○ 頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv) f ~物(wu)體(ti)每秒(miao)(miao)鐘(zhong)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)循(xun)環的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)次數(shu)(shu),單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)是(shi)(shi)(shi)(shi)赫茲 [Hz]。 ★ 頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)是(shi)(shi)(shi)(shi)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)特性(xing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)標志,是(shi)(shi)(shi)(shi)分(fen)(fen)析振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)原因的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)重(zhong)(zhong)要(yao)(yao)依據。 即(ji)(ji)(ji)“有(you)(you)(you)沒有(you)(you)(you)問題(ti)看(kan)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)幅(fu)(fu)(fu),什么問題(ti)看(kan)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)” 。 ○ 周(zhou)期(qi)(qi) T 是(shi)(shi)(shi)(shi)物(wu)體(ti)完成(cheng)(cheng)一(yi)個振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)過(guo)程(cheng)(cheng)(cheng)所需(xu)要(yao)(yao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)(shi)間(jian)(jian)(jian),單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)是(shi)(shi)(shi)(shi)秒(miao)(miao) [s] 。例(li)如(ru)(ru)一(yi)個單(dan)(dan)(dan)(dan)擺,它(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de) 周(zhou)期(qi)(qi)就(jiu)(jiu)是(shi)(shi)(shi)(shi)重(zhong)(zhong)錘從左(zuo)運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)到(dao)(dao)右,再從右運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)回左(zuo)邊(bian)起點所需(xu)要(yao)(yao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)(shi)間(jian)(jian)(jian)。 頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)與(yu)(yu)(yu)(yu)周(zhou)期(qi)(qi)互(hu)(hu)為(wei)倒數(shu)(shu),f=1/T。 對旋(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)機(ji)(ji)(ji)械來(lai)(lai)說(shuo),轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)每旋(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)一(yi)周(zhou)就(jiu)(jiu)是(shi)(shi)(shi)(shi)完成(cheng)(cheng)了(le)一(yi)個振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)過(guo)程(cheng)(cheng)(cheng),為(wei)一(yi)個周(zhou)期(qi)(qi),或(huo)(huo)(huo)(huo)者(zhe)(zhe)說(shuo)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong) 循(xun)環變化了(le)一(yi)次。因此(ci)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su) n、角速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du) ω 都可以(yi)看(kan)作頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv),稱(cheng)(cheng)(cheng)(cheng)為(wei)旋(xuan)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)、轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)、圓(yuan)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin) 率(lv)(lv)(lv)(lv)(lv)(lv)(lv),或(huo)(huo)(huo)(huo) n、ω、f 不(bu)分(fen)(fen),都直接簡稱(cheng)(cheng)(cheng)(cheng)為(wei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv),它(ta)們之(zhi)(zhi)間(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)換(huan)(huan)算關系(xi)(xi)為(wei):f = n/60,ω=2πf= 5 2πn/60≈0.1n,其(qi)中(zhong)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su) n 的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)為(wei)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)/分(fen)(fen)鐘(zhong)[r/min],角速(su)(su)(su)(su)(su)(su)(su)(su)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du) ω 的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)為(wei)弧(hu)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)/秒(miao)(miao)[rad/s]。 ○ 倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、一(yi)倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、二倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、0.5 倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、工頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、基(ji)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin) 許多(duo)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)往往與(yu)(yu)(yu)(yu)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su)相(xiang)(xiang)關,因此(ci)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)也可以(yi)用(yong)(yong)(yong)(yong)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)倍(bei)(bei)(bei)(bei)(bei)(bei)數(shu)(shu)來(lai)(lai)表(biao)(biao)(biao)(biao)示。 倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)就(jiu)(jiu)是(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)倍(bei)(bei)(bei)(bei)(bei)(bei)數(shu)(shu)來(lai)(lai)表(biao)(biao)(biao)(biao)示的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)。 如(ru)(ru)果振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)為(wei)機(ji)(ji)(ji)器實(shi)(shi)際運(yun)(yun)行(xing)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)一(yi)倍(bei)(bei)(bei)(bei)(bei)(bei)、二倍(bei)(bei)(bei)(bei)(bei)(bei)、三(san)倍(bei)(bei)(bei)(bei)(bei)(bei)、0.5 倍(bei)(bei)(bei)(bei)(bei)(bei)、0.43 倍(bei)(bei)(bei)(bei)(bei)(bei)、?時(shi)(shi),則 稱(cheng)(cheng)(cheng)(cheng)為(wei)一(yi)倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin) (習(xi)慣上(shang)(shang)又稱(cheng)(cheng)(cheng)(cheng)為(wei) 1X, 1× 、 或(huo)(huo)(huo)(huo) ) 二倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin) (2X、 ) 三(san)倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin) 2× 、 (3X、 ) 0.5 倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin) 3× 、 (0.5X、 0.5× 、0.43 倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)(0.43X、0.43× 、?等。其(qi)中(zhong),一(yi)倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin),即(ji)(ji)(ji)實(shi)(shi)際運(yun)(yun)行(xing)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)又稱(cheng)(cheng)(cheng)(cheng)為(wei)工頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、 ) ) 轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)、基(ji)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin),0.5 倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)又稱(cheng)(cheng)(cheng)(cheng)為(wei)半頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)。 例(li)如(ru)(ru),某機(ji)(ji)(ji)器的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)實(shi)(shi)際運(yun)(yun)行(xing)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su) n 為(wei) 6000 r/min,那么,轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)(su)(su)(su)(su)(su)(su)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)(lv)(lv)(lv)=n/60=6000/60=100Hz,其(qi)工頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)為(wei) 100Hz,二倍(bei)(bei)(bei)(bei)(bei)(bei)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)為(wei) 200Hz,半頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)為(wei) 50Hz。 3、相(xiang)(xiang)位(wei)(wei)(wei)(wei)(wei) ○ 相(xiang)(xiang)位(wei)(wei)(wei)(wei)(wei)~給定時(shi)(shi)刻振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)體(ti)被測(ce)(ce)點相(xiang)(xiang)對于固定參(can)考點的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)角位(wei)(wei)(wei)(wei)(wei)置,單(dan)(dan)(dan)(dan)位(wei)(wei)(wei)(wei)(wei)是(shi)(shi)(shi)(shi)度(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)〔° 〕進一(yi)步(bu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)理解(jie) 后續再介紹。 (十(shi)) 波形(xing)與(yu)(yu)(yu)(yu)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)譜的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)關系(xi)(xi) FFT 變換(huan)(huan)原理 6 FFT 變換(huan)(huan)示意(yi)圖 二 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)測(ce)(ce)量(liang)(liang)(liang)用(yong)(yong)(yong)(yong)傳(chuan)(chuan)(chuan)感(gan)器 如(ru)(ru)何(he)檢(jian)測(ce)(ce)到(dao)(dao)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)信號呢?測(ce)(ce)試系(xi)(xi)統采集的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)都是(shi)(shi)(shi)(shi)電壓(ya)信號,如(ru)(ru)何(he)將物(wu)理量(liang)(liang)(liang)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)換(huan)(huan)為(wei)電量(liang)(liang)(liang)呢? 這就(jiu)(jiu)需(xu)要(yao)(yao)各種類(lei)型的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)傳(chuan)(chuan)(chuan)感(gan)器。 

1、 傳感器(qi)作用(yong):傳感器(qi)就是將被(bei)測物量的變化轉換成(cheng)電信號的轉換器(qi)。 

2、 傳感(gan)(gan)(gan)器分(fen)類:傳感(gan)(gan)(gan)器根(gen)據被測(ce)物(wu)量的不同分(fen)為:溫度(du)(du)傳感(gan)(gan)(gan)器、壓力傳感(gan)(gan)(gan)器、力 傳感(gan)(gan)(gan)器、應變計、振動傳感(gan)(gan)(gan)器(位移傳感(gan)(gan)(gan)器、速度(du)(du)傳感(gan)(gan)(gan)器、加速度(du)(du)傳感(gan)(gan)(gan)器) 、轉速傳感(gan)(gan)(gan)器以及 噪(zao)聲傳感(gan)(gan)(gan)器等;

 3、 傳(chuan)感(gan)器(qi)常(chang)用技術指(zhi)(zhi)標: 最常(chang)用的指(zhi)(zhi)標:靈(ling)(ling)敏(min)度(du)(du)(du)(du):傳(chuan)感(gan)器(qi)將物(wu)理(li)量(liang)(liang)轉換成(cheng)電(dian)量(liang)(liang)后(hou),我們測到的是電(dian)壓,如 何(he)知道真(zhen)實物(wu)理(li)量(liang)(liang)變(bian)(bian)化了多少呢?這就是傳(chuan)感(gan)器(qi)的靈(ling)(ling)敏(min)度(du)(du)(du)(du)指(zhi)(zhi)標要告訴我們的。靈(ling)(ling)敏(min) 度(du)(du)(du)(du)就是單(dan)位物(wu)理(li)量(liang)(liang)變(bian)(bian)化產生的電(dian)量(liang)(liang)大小。 如位移傳(chuan)感(gan)器(qi)靈(ling)(ling)敏(min)度(du)(du)(du)(du)指(zhi)(zhi)標: 7.87mv/um。 單(dan) 位:V/EU

 4、 電渦流(liu)式(shi)位(wei)(wei)移(yi)傳感(gan)器(qi) 外(wai)形(xing)圖(tu) 7 用于(yu)測(ce)量(liang)軸的(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)。 靈(ling)敏(min)度(du)(du)(du):200mv/mil=7.87mv/μ m≈8 mv 5、 電動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)速(su)度(du)(du)(du)傳感(gan)器(qi) 用于(yu)測(ce)量(liang)軸承(cheng)座的(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)速(su)度(du)(du)(du)。 靈(ling)敏(min)度(du)(du)(du):500mv/in/s = 19.6mv/mm/s 8 6、 壓(ya)電式(shi)加(jia)速(su)度(du)(du)(du)傳感(gan)器(qi) 靈(ling)敏(min)度(du)(du)(du): 25mv/g Bently 公司標(biao)準型 三、 振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)標(biao)準 △ 振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)評(ping)價(jia) 評(ping)價(jia)設備運(yun)行(xing)狀(zhuang)態是(shi)否正常、有無發生故障(zhang),除(chu)查看(kan)轉(zhuan)(zhuan)速(su)、流(liu)量(liang)、壓(ya)力、溫度(du)(du)(du)、電流(liu)等 運(yun)行(xing)參數外(wai),主要(yao)(yao)是(shi)看(kan)設備的(de)(de)(de)(de)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)狀(zhuang)況,看(kan)振(zhen)(zhen)(zhen)(zhen)(zhen)幅值(zhi)(zhi)(zhi)的(de)(de)(de)(de)大(da)小。 ○ 振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)烈度(du)(du)(du) 振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)烈度(du)(du)(du)是(shi)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)標(biao)準中(zhong)的(de)(de)(de)(de)通用術語,是(shi)描(miao)述(shu)一(yi)臺(tai)機器(qi)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)能量(liang)狀(zhuang)態的(de)(de)(de)(de)特征量(liang)。在(zai)國內(nei)外(wai) 振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)標(biao)準中(zhong),幾乎(hu)都規定振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)烈度(du)(du)(du)的(de)(de)(de)(de)度(du)(du)(du)量(liang)值(zhi)(zhi)(zhi)為(wei)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)速(su)度(du)(du)(du)的(de)(de)(de)(de)有效值(zhi)(zhi)(zhi)。因此,可(ke)以(yi)(yi)認(ren)為(wei)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)烈度(du)(du)(du) 就是(shi)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)速(su)度(du)(du)(du)的(de)(de)(de)(de)有效值(zhi)(zhi)(zhi)。 由于(yu)只有振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)烈度(du)(du)(du)才有振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)標(biao)準可(ke)以(yi)(yi)參照(大(da)機組不完全如此) ,評(ping)價(jia)機器(qi)運(yun)轉(zhuan)(zhuan)狀(zhuang)態的(de)(de)(de)(de)優 劣時才能做到(dao)有據可(ke)依。所以(yi)(yi)在(zai)對一(yi)般旋轉(zhuan)(zhuan)機械進行(xing)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)檢測(ce)時,應(ying)測(ce)量(liang)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)速(su)度(du)(du)(du)的(de)(de)(de)(de)有效值(zhi)(zhi)(zhi) (而不是(shi)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)位(wei)(wei)移(yi)) ,并要(yao)(yao)求(qiu)在(zai)靠近軸承(cheng)位(wei)(wei)置(zhi)處的(de)(de)(de)(de)水平、垂直、軸向(xiang)三個方向(xiang)上都進行(xing)測(ce)量(liang), 最后取最大(da)值(zhi)(zhi)(zhi)作為(wei)振(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)烈度(du)(du)(du)。 烈度(du)(du)(du)標(biao)準 9 10 11