140DAO85300 Quantum模塊
140DAO85300 Quantum模塊
直流伺服電機(jī)具有響應(yīng)快、低速平穩(wěn)性好、調(diào)速范圍寬等特點(diǎn),因而常常用于實(shí)現(xiàn)精密調(diào)速和位置控制的隨動(dòng)系統(tǒng)中,在工業(yè)、國(guó)防和民用等領(lǐng)域內(nèi)得到廣泛應(yīng)用,特別是在火炮穩(wěn)定系統(tǒng)、艦載平臺(tái)、雷達(dá)天線、機(jī)器人控制等場(chǎng)合。盡管交流伺服電機(jī)的發(fā)展相當(dāng)迅速,但在這些領(lǐng)域內(nèi)還難以取代直流伺服電機(jī)?! ?/p>
傳統(tǒng)的直流調(diào)速系統(tǒng)包含2個(gè)反饋環(huán)路,即速度環(huán)和電流環(huán),采用測(cè)速機(jī)、電流傳感器(霍爾器件)及模擬電子線路實(shí)現(xiàn)速度的閉環(huán)控制?,F(xiàn)代數(shù)字直流伺服控制則采用高速數(shù)字信號(hào)處理器(DSP),直接對(duì)速度和電流信號(hào)進(jìn)行采樣,通過(guò)軟件實(shí)現(xiàn)數(shù)字比較、數(shù)字調(diào)節(jié)運(yùn)算(數(shù)字濾波)、數(shù)字脈寬調(diào)制等各種功能,從而實(shí)現(xiàn)對(duì)速度的精確控制。二者相比,模擬調(diào)速系統(tǒng)結(jié)構(gòu)簡(jiǎn)單、成本低、可靠性高,但調(diào)試較復(fù)雜,因?yàn)槠潆娐穮?shù)的修改往往需要硬件上的改動(dòng);而數(shù)字調(diào)速系統(tǒng)結(jié)構(gòu)復(fù)雜、成本高,但是調(diào)速精度很高、調(diào)試過(guò)程也較容易,調(diào)速系統(tǒng)的性能可以由軟件進(jìn)行控制。
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