外文翻譯---淺析步進電機的plc控制技術與發(fā)展趨勢-在線瀏覽
2024-09-04 20:02本頁面
【正文】 ，啟動頻率應更低如果要使電機達到高速轉(zhuǎn)動，脈沖頻率應該有一加速過程，即啟動頻率較低，在數(shù)字化制造時代發(fā)揮著重大的用途伴隨著小同的數(shù)字化技術的發(fā)展以及步進電機本身技術的提高，步進電機將會在更多的領域得到應用。當步進驅(qū)動器接收到一個脈沖信號，它就驅(qū)動步進電機按設定的方向轉(zhuǎn)動一個固定的角度稱為“步距角”，它的旋轉(zhuǎn)是以固定的角度一步一步運行的。同時,可以通過控制脈沖頻率來控制電機轉(zhuǎn)動的速度和加速度，利用其沒有累積誤差精度為百分百的特點，泛應用于各種開環(huán)控制。因此在控制軟件上設置一個脈沖總數(shù)和脈沖頻率可控的脈沖信號發(fā)生器。動作切斷脈沖發(fā)生器回路，使其停止,伺服機構的步進電機無脈沖輸入時便停止運轉(zhuǎn)，伺服執(zhí)行機構定位當伺服執(zhí)行機構的位移速度要求較高時，可以用PLC的高速脈沖發(fā)生器. 不同的PLC其高速脈沖的頻率可達4000 6000Hz. PLC用來產(chǎn)生控制脈沖,通過PLC編程輸出一定數(shù)最的方波脈沖，控制步進電機的轉(zhuǎn)角,可編程控制器輸出的控制脈沖按步進電機的通電順序分配到相應的繞組。國內(nèi)外電機的發(fā)展趨勢:（1）、繼續(xù)沿著小型化的方向發(fā)展隨著電動機本身應用領域的拓寬以及各類整機的不斷小型化，要求與之配套的電動機也必須越來越小，在57, 42機座號的電動機應用了多年后，現(xiàn)在其機座號向3 9, 3 5,30, 25方向向下延伸。（3）、,泛應用的二相和四相電動機，其振動和噪聲較大，而五相和三相電動機具有優(yōu)勢性而就這兩種電動機而言，五相電動機的驅(qū)動電路比三相電動機復雜，因此三相電動機系統(tǒng)的性能價格比要比五相電動機更好一些我國的情況有一所小同，直到20紀紀八十年代，一直是磁阻式步進電動機占統(tǒng)治地位，混合式步進電動機是80年代后期才開始發(fā)展，至今仍然是兩種結構類型同時并存。這種現(xiàn)狀對步進電動機的發(fā)展是不利的。t accumulate.（2）、tallest temperatures which enter electrical engineering outward appearance and allow tread and lead into the electrical engineering temperature high can make the magnetism material of electrical engineering back first, cause the dint descend thus is as for lose a step, so the electrical engineering outward appearance allow of the tallest temperature should be decided by small back with electrical engineering magnetism material and order。 The frequency is more high, anti to electromotive force more big ，big in its function, the electrical engineering enlarges with the frequency(or speed) but mutually the electric current let up, causing the dint descend thus.（4）、 can revolve normally when 4 enter electrical engineering low speed, but if high in certain the speed can39。t start normally, the possible occurrence throws a step or blocks up to turn. Under the situation that there is one load, the start frequency should be much lower if want to make the electrical engineering attain high speed to turn to move, the pulse frequency should have an acceleration process, then start the frequency is lower, then press certain acceleration to rise the high hoped. Tread to show the characteristics of with it into the electric motor, turn ages of manufacturing to develop important use to acpany with in the numeral small together of numeral turn technical of development and tread into the electrical engineering technical exaltation，tread will get an application in more realms into the electrical engineering.enter an electrical engineering control system to constitute：Tread is a kind of performance organizati
環(huán)評公示相關推薦
鄂ICP備17016276號-1