一、伺服系統是什么意思

伺服系統（servomechanism）又稱隨(sui)動系(xi)統(tong)(tong)(tong)，是用來(lai)精確地跟隨(sui)或(huo)(huo)復現某(mou)個過程(cheng)的(de)(de)反饋(kui)(kui)控(kong)制(zhi)系(xi)統(tong)(tong)(tong)。伺(si)服系(xi)統(tong)(tong)(tong)使(shi)(shi)物體(ti)的(de)(de)位(wei)(wei)置(zhi)、方位(wei)(wei)、狀態(tai)等(deng)(deng)(deng)輸(shu)出被控(kong)量能夠跟隨(sui)輸(shu)入目標（或(huo)(huo)給(gei)定值）的(de)(de)任(ren)意變(bian)化的(de)(de)自動控(kong)制(zhi)系(xi)統(tong)(tong)(tong)。它的(de)(de)主要(yao)任(ren)務是按控(kong)制(zhi)命令的(de)(de)要(yao)求、對(dui)功(gong)率進行放大、變(bian)換與調控(kong)等(deng)(deng)(deng)處理，使(shi)(shi)驅動裝置(zhi)輸(shu)出的(de)(de)力矩、速(su)度(du)和(he)位(wei)(wei)置(zhi)控(kong)制(zhi)非常(chang)靈活方便。在很多情況下，伺(si)服系(xi)統(tong)(tong)(tong)專指被控(kong)制(zhi)量（系(xi)統(tong)(tong)(tong)的(de)(de)輸(shu)出量）是機(ji)(ji)械(xie)位(wei)(wei)移(yi)或(huo)(huo)位(wei)(wei)移(yi)速(su)度(du)、加速(su)度(du)的(de)(de)反饋(kui)(kui)控(kong)制(zhi)系(xi)統(tong)(tong)(tong)，其(qi)作用是使(shi)(shi)輸(shu)出的(de)(de)機(ji)(ji)械(xie)位(wei)(wei)移(yi)（或(huo)(huo)轉角）準(zhun)確地跟蹤輸(shu)入的(de)(de)位(wei)(wei)移(yi)（或(huo)(huo)轉角），其(qi)結構組(zu)成和(he)其(qi)他形式(shi)的(de)(de)反饋(kui)(kui)控(kong)制(zhi)系(xi)統(tong)(tong)(tong)沒有原則上的(de)(de)區別(bie)。伺(si)服系(xi)統(tong)(tong)(tong)最初用于國(guo)防(fang)軍工，如火炮的(de)(de)控(kong)制(zhi)，船(chuan)艦、飛(fei)機(ji)(ji)的(de)(de)自動駕駛(shi)，導(dao)彈(dan)發射等(deng)(deng)(deng)，后來(lai)逐漸(jian)推廣到國(guo)民經(jing)濟的(de)(de)許多部門，如自動機(ji)(ji)床、無線(xian)跟蹤控(kong)制(zhi)等(deng)(deng)(deng)。

該圖片由注冊用戶"天空之城"提供，版權聲明反饋

二、伺服系統由哪幾個部分組成

伺服(fu)系(xi)統主要由(you)三部分組成：控(kong)制(zhi)器(qi)，功(gong)率(lv)驅動(dong)裝置和電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)。控(kong)制(zhi)器(qi)按(an)照數控(kong)系(xi)統的(de)(de)給定值(zhi)和通過反饋裝置檢測的(de)(de)實際(ji)運(yun)行值(zhi)的(de)(de)差，調節控(kong)制(zhi)量；功(gong)率(lv)驅動(dong)裝置作(zuo)為系(xi)統的(de)(de)主回路(lu)，一方(fang)面(mian)按(an)控(kong)制(zhi)量的(de)(de)大(da)小將電(dian)(dian)(dian)(dian)網中的(de)(de)電(dian)(dian)(dian)(dian)能作(zuo)用到電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)之(zhi)上，調節電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)轉(zhuan)矩的(de)(de)大(da)小，另一方(fang)面(mian)按(an)電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)的(de)(de)要求把恒(heng)壓恒(heng)頻的(de)(de)電(dian)(dian)(dian)(dian)網供(gong)電(dian)(dian)(dian)(dian)轉(zhuan)換(huan)為電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)所需的(de)(de)交流電(dian)(dian)(dian)(dian)或直流電(dian)(dian)(dian)(dian)；電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)則按(an)供(gong)電(dian)(dian)(dian)(dian)大(da)小拖(tuo)動(dong)機(ji)(ji)械運(yun)轉(zhuan)。

三、伺服系統的主要作用

1、以(yi)小(xiao)功率(lv)指令信號去控(kong)制大功率(lv)負載。

2、在(zai)沒有機械連接的情況(kuang)下(xia)，由輸入軸(zhou)控制位于遠(yuan)處的輸出軸(zhou)，實現(xian)遠(yuan)距同(tong)步傳動。

3、使輸出(chu)機械(xie)位(wei)移精確地跟蹤(zong)電信號，如記錄(lu)和指示儀表等。