實現(xian)了位置，速度和力矩(ju)的閉環控制，克(ke)服了步進(jin)電機失步的問題
高速性能(neng)好(hao)，一般額定(ding)轉(zhuan)速能(neng)達到(dao)2000～3000轉(zhuan)
抗過載(zai)能力強，能承受三倍于額定轉矩(ju)的負載(zai)，對有瞬(shun)間負載(zai)波動(dong)和要求快(kuai)速起動(dong)的場合特別適用(yong)
低(di)速運行(xing)平穩，低(di)速運行(xing)時不會(hui)產生類似于步(bu)進電機的步(bu)進運行(xing)現象(xiang)，適用于有高速響應要(yao)求的場合
電機(ji)加(jia)減(jian)速的動態相應時間(jian)短(duan)，一般(ban)在幾十毫秒之內(nei)
發熱和噪音明顯降低
重(zhong)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)是(shi)為國(guo)民經濟(ji)(ji)各部(bu)(bu)門提(ti)供(gong)物質(zhi)技術基礎的(de)(de)主(zhu)要生(sheng)產資料(liao)的(de)(de)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)。重(zhong)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)與輕工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)對應(ying)，提(ti)供(gong)生(sheng)產資料(liao)的(de)(de)部(bu)(bu)門稱(cheng)為重(zhong)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)，生(sheng)產消費資料(liao)的(de)(de)部(bu)(bu)門稱(cheng)為輕工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)。重(zhong)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)包(bao)括(kuo)(kuo)鋼鐵工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、冶金工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、機械、能源（電力、石油、煤炭、天然氣(qi)等(deng)(deng)）、化(hua)學、材(cai)料(liao)等(deng)(deng)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)。它(ta)為國(guo)民經濟(ji)(ji)各部(bu)(bu)門（包(bao)括(kuo)(kuo)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)本(ben)身）提(ti)供(gong)原材(cai)料(liao)、動力、技術裝備等(deng)(deng)勞(lao)動資料(liao)和勞(lao)動對象，是(shi)實現(xian)社會(hui)再(zai)生(sheng)產和擴(kuo)大再(zai)生(sheng)產的(de)(de)物質(zhi)基礎。一個國(guo)家(jia)重(zhong)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)的(de)(de)發展規模和技術水平，是(shi)體現(xian)其(qi)國(guo)力的(de)(de)重(zhong)要標志(zhi)。
醫療器械是指直接(jie)或者間接(jie)用于人體的儀器、設備(bei)、、體外診斷試劑及校(xiao)準物、材料(liao)以及其他類似或者相關的物品，包括(kuo)所需要的計算機(ji)軟件。
效(xiao)用主要通(tong)過(guo)物理等方(fang)(fang)式(shi)獲(huo)得，不是(shi)(shi)通(tong)過(guo)藥(yao)理學、免疫學或者(zhe)代(dai)謝的(de)方(fang)(fang)式(shi)獲(huo)得，或者(zhe)雖然有這些方(fang)(fang)式(shi)參(can)與但是(shi)(shi)只(zhi)起輔助作用。
目的(de)是疾病的(de)診(zhen)斷、預(yu)防、監護(hu)、治(zhi)(zhi)療(liao)或(huo)(huo)者緩(huan)解(jie)；損(sun)傷的(de)診(zhen)斷、監護(hu)、治(zhi)(zhi)療(liao)、緩(huan)解(jie)或(huo)(huo)者功能補償；生(sheng)理結構(gou)或(huo)(huo)者生(sheng)理過程的(de)檢(jian)驗、替(ti)代、調節或(huo)(huo)者支持；生(sheng)命的(de)支持或(huo)(huo)者維持；妊娠控(kong)制(zhi)；通過對來自人體(ti)的(de)樣本進(jin)行檢(jian)查，為醫療(liao)或(huo)(huo)者診(zhen)斷目的(de)提(ti)供信息(xi)。
食(shi)品(pin)機械是指把食(shi)品(pin)原料(liao)加工成(cheng)食(shi)品(pin)(或半成(cheng)品(pin))過程中所應(ying)用的機械設(she)備和裝置。食(shi)品(pin)機械主(zhu)要可以分為、兩大類。
械是、、制版機等機械(xie)設(she)備(bei)和(he)其它(ta)輔助機械(xie)設(she)備(bei)的(de)統稱。這些機械(xie)設(she)備(bei)都有不同(tong)的(de)性能和(he)用途，因此(ci)，組成(cheng)它(ta)們的(de)機械(xie)形式不完(wan)全相同(tong)。
