伺(si)(si)(si)服(fu)系(xi)(xi)统(tong)是使(shi)物体的(de)(de)(de)位(wei)置、方位(wei)、状态等输出(chu)被(bei)控(kong)量能(neng)够跟(gen)随输入目标（或给定值）的(de)(de)(de)任意变化的(de)(de)(de)自动控(kong)制系(xi)(xi)统(tong)。伺(si)(si)(si)服(fu)主(zhu)要靠(kao)脉(mai)冲(chong)(chong)来定位(wei)，基(ji)本上(shang)可以(yi)这(zhei)样理解，伺(si)(si)(si)服(fu)电(dian)机(ji)接收到(dao)1个脉(mai)冲(chong)(chong)，就会旋转(zhuan)1个脉(mai)冲(chong)(chong)对(dui)应(ying)的(de)(de)(de)角度，从(cong)而实现位(wei)移(yi)，因为(wei)，伺(si)(si)(si)服(fu)电(dian)机(ji)本身(shen)具备(bei)发出(chu)脉(mai)冲(chong)(chong)的(de)(de)(de)功能(neng)，所以(yi)伺(si)(si)(si)服(fu)电(dian)机(ji)每(mei)旋转(zhuan)一个角度，都会发出(chu)对(dui)应(ying)数量的(de)(de)(de)脉(mai)冲(chong)(chong)，这(zhei)样，和伺(si)(si)(si)服(fu)电(dian)机(ji)接受的(de)(de)(de)脉(mai)冲(chong)(chong)形(xing)成(cheng)(cheng)了(le)呼应(ying)，或者(zhe)叫(jiao)闭(bi)环，如此(ci)(ci)一来，系(xi)(xi)统(tong)就会知道(dao)发了(le)多(duo)(duo)少脉(mai)冲(chong)(chong)给伺(si)(si)(si)服(fu)电(dian)机(ji)，同时(shi)又收了(le)多(duo)(duo)少脉(mai)冲(chong)(chong)回来，这(zhei)样，就能(neng)够比较精(jing)确(que)的(de)(de)(de)控(kong)制电(dian)机(ji)的(de)(de)(de)转(zhuan)动，从(cong)而实现精(jing)确(que)的(de)(de)(de)定位(wei)，可以(yi)达到(dao)。直流伺(si)(si)(si)服(fu)电(dian)机(ji)分为(wei)有刷(shua)和无刷(shua)电(dian)机(ji)。有刷(shua)电(dian)机(ji)成(cheng)(cheng)本低，结构简单，启(qi)动转(zhuan)矩大(da)，调速范围宽，控(kong)制容易(yi)，需要维护，但维护不方便(bian)（换碳刷(shua)），产生电(dian)磁干扰，对(dui)环境有要求。因此(ci)(ci)它可以(yi)用于对(dui)成(cheng)(cheng)本敏(min)感的(de)(de)(de)普通(tong)工(gong)业和民(min)用场合~伺(si)(si)(si)服(fu)系(xi)(xi)统(tong)必须(xu)具备(bei)可控(kong)性(xing)好，稳定性(xing)高等基(ji)本性(xing)能(neng)。合肥三菱伺(si)(si)(si)服(fu)企业

性(xing)(xing)能(neng)比较伺(si)服(fu)电(dian)(dian)(dian)机(ji)与(yu)步(bu)(bu)进电(dian)(dian)(dian)机(ji)的性(xing)(xing)能(neng)比较步(bu)(bu)进电(dian)(dian)(dian)机(ji)作为(wei)一种开环(huan)控(kong)(kong)制(zhi)(zhi)的系(xi)统(tong)(tong)，和(he)现代数(shu)(shu)字控(kong)(kong)制(zhi)(zhi)技术有着本质的联系(xi)。在(zai)目前国内的数(shu)(shu)字控(kong)(kong)制(zhi)(zhi)系(xi)统(tong)(tong)中(zhong)，步(bu)(bu)进电(dian)(dian)(dian)机(ji)的应(ying)用(yong)(yong)(yong)十分多(duo)数(shu)(shu)。随着全数(shu)(shu)字式交(jiao)流伺(si)服(fu)系(xi)统(tong)(tong)的出现，交(jiao)流伺(si)服(fu)电(dian)(dian)(dian)机(ji)也越(yue)来(lai)越(yue)多(duo)地应(ying)用(yong)(yong)(yong)于数(shu)(shu)字控(kong)(kong)制(zhi)(zhi)系(xi)统(tong)(tong)中(zhong)。为(wei)了(le)适应(ying)数(shu)(shu)字控(kong)(kong)制(zhi)(zhi)的发展趋势，运动(dong)控(kong)(kong)制(zhi)(zhi)系(xi)统(tong)(tong)中(zhong)大多(duo)采(cai)用(yong)(yong)(yong)步(bu)(bu)进电(dian)(dian)(dian)机(ji)或全数(shu)(shu)字式交(jiao)流伺(si)服(fu)电(dian)(dian)(dian)机(ji)作为(wei)执行电(dian)(dian)(dian)动(dong)机(ji)。虽(sui)然两者(zhe)在(zai)控(kong)(kong)制(zhi)(zhi)方式上相似(脉冲(chong)串和(he)方向信(xin)号)，但在(zai)使(shi)用(yong)(yong)(yong)性(xing)(xing)能(neng)和(he)应(ying)用(yong)(yong)(yong)场合(he)上存(cun)在(zai)着较大的差(cha)异。现就(jiu)二(er)者(zhe)的使(shi)用(yong)(yong)(yong)性(xing)(xing)能(neng)作一比较。广东交(jiao)流伺(si)服(fu)销售伺(si)服(fu)电(dian)(dian)(dian)机(ji)性(xing)(xing)能(neng)：过载能(neng)力。

交流(liu)(liu)伺(si)服电(dian)(dian)(dian)机也是(shi)无(wu)刷电(dian)(dian)(dian)机，分为同(tong)步和异(yi)步电(dian)(dian)(dian)机，运动(dong)(dong)控(kong)(kong)制中一般都用同(tong)步电(dian)(dian)(dian)机，它的功(gong)率(lv)(lv)范围大，可以做到(dao)比较(jiao)大的功(gong)率(lv)(lv)。大惯量，较(jiao)高(gao)转(zhuan)(zhuan)动(dong)(dong)速(su)(su)(su)度低(di)，且随着功(gong)率(lv)(lv)增大而(er)快速(su)(su)(su)降低(di)。因而(er)适合做低(di)速(su)(su)(su)平稳运行的应(ying)用。伺(si)服电(dian)(dian)(dian)机内部(bu)的转(zhuan)(zhuan)子(zi)是(shi)永磁铁，驱动(dong)(dong)器(qi)(qi)控(kong)(kong)制的U/V/W三相电(dian)(dian)(dian)形成(cheng)电(dian)(dian)(dian)磁场(chang)，转(zhuan)(zhuan)子(zi)在(zai)此磁场(chang)的作用下(xia)转(zhuan)(zhuan)动(dong)(dong)，同(tong)时电(dian)(dian)(dian)机自(zi)带的编(bian)码器(qi)(qi)反(fan)馈(kui)信号给(ji)驱动(dong)(dong)器(qi)(qi)，驱动(dong)(dong)器(qi)(qi)根据(ju)反(fan)馈(kui)值与目标值进行比较(jiao)，调整转(zhuan)(zhuan)子(zi)转(zhuan)(zhuan)动(dong)(dong)的角(jiao)度。伺(si)服电(dian)(dian)(dian)机的精度决定于编(bian)码器(qi)(qi)的精度（线数）。交流(liu)(liu)伺(si)服电(dian)(dian)(dian)机和无(wu)刷直流(liu)(liu)伺(si)服电(dian)(dian)(dian)机在(zai)功(gong)能(neng)上的区别：交流(liu)(liu)伺(si)服要好一些，因为是(shi)正(zheng)弦波控(kong)(kong)制，转(zhuan)(zhuan)矩脉动(dong)(dong)小(xiao)。直流(liu)(liu)伺(si)服是(shi)梯形波。但直流(liu)(liu)伺(si)服比较(jiao)简单，便宜~

矩(ju)频特性(xing)不(bu)(bu)同(tong)步进(jin)电(dian)机(ji)(ji)的输(shu)出(chu)力(li)(li)矩(ju)随转(zhuan)(zhuan)速(su)(su)升高(gao)而下降，且在较高(gao)转(zhuan)(zhuan)速(su)(su)时(shi)(shi)会急剧下降，所以其(qi)最(zui)高(gao)工作转(zhuan)(zhuan)速(su)(su)一般在300~600RPM。交流(liu)(liu)伺服电(dian)机(ji)(ji)为(wei)(wei)恒(heng)力(li)(li)矩(ju)输(shu)出(chu)，即在其(qi)额(e)定(ding)(ding)转(zhuan)(zhuan)速(su)(su)(一般为(wei)(wei)2000RPM或3000RPM)以内，都能输(shu)出(chu)额(e)定(ding)(ding)转(zhuan)(zhuan)矩(ju)，在额(e)定(ding)(ding)转(zhuan)(zhuan)速(su)(su)以上为(wei)(wei)恒(heng)功率输(shu)出(chu)。过(guo)载能力(li)(li)不(bu)(bu)同(tong)步进(jin)电(dian)机(ji)(ji)一般不(bu)(bu)具(ju)有(you)过(guo)载能力(li)(li)。交流(liu)(liu)伺服电(dian)机(ji)(ji)具(ju)有(you)较强的过(guo)载能力(li)(li)。以三洋交流(liu)(liu)伺服系统为(wei)(wei)例，它(ta)具(ju)有(you)速(su)(su)度过(guo)载和转(zhuan)(zhuan)矩(ju)过(guo)载能力(li)(li)。其(qi)最(zui)大转(zhuan)(zhuan)矩(ju)为(wei)(wei)额(e)定(ding)(ding)转(zhuan)(zhuan)矩(ju)的二(er)到三倍，可用(yong)于克服惯(guan)性(xing)负载在启动瞬间的惯(guan)性(xing)力(li)(li)矩(ju)。步进(jin)电(dian)机(ji)(ji)因为(wei)(wei)没(mei)有(you)这(zhei)种(zhong)(zhong)过(guo)载能力(li)(li)，在选(xuan)型时(shi)(shi)为(wei)(wei)了克服这(zhei)种(zhong)(zhong)惯(guan)性(xing)力(li)(li)矩(ju)，往往需(xu)要选(xuan)取(qu)较大转(zhuan)(zhuan)矩(ju)的电(dian)机(ji)(ji)，而机(ji)(ji)器在正常工作期(qi)间又不(bu)(bu)需(xu)要那(nei)么大的转(zhuan)(zhuan)矩(ju)，便出(chu)现了力(li)(li)矩(ju)浪费的现象。伺服电(dian)机(ji)(ji)轴(zhou)承过(guo)热的缘(yuan)由：轴(zhou)承选(xuan)用(yong)不(bu)(bu)当；

交(jiao)(jiao)流(liu)(liu)伺(si)(si)(si)(si)(si)(si)服(fu)(fu)电(dian)(dian)(dian)机(ji)也是(shi)(shi)无刷电(dian)(dian)(dian)机(ji)，分为(wei)同步和(he)异步电(dian)(dian)(dian)机(ji)，运动(dong)(dong)控制中一般都(dou)用(yong)(yong)同步电(dian)(dian)(dian)机(ji)，它的(de)(de)功(gong)率(lv)范(fan)围大，可以做到比较(jiao)大的(de)(de)功(gong)率(lv)。大惯量，较(jiao)高转(zhuan)(zhuan)动(dong)(dong)速(su)度(du)低，且随着功(gong)率(lv)增大而快速(su)降低。因(yin)(yin)而适合做低速(su)平稳运行的(de)(de)应用(yong)(yong)。伺(si)(si)(si)(si)(si)(si)服(fu)(fu)电(dian)(dian)(dian)机(ji)内部的(de)(de)转(zhuan)(zhuan)子(zi)是(shi)(shi)永(yong)磁铁，驱(qu)(qu)动(dong)(dong)器(qi)控制的(de)(de)U/V/W三(san)相电(dian)(dian)(dian)形成电(dian)(dian)(dian)磁场(chang)，转(zhuan)(zhuan)子(zi)在此(ci)磁场(chang)的(de)(de)作用(yong)(yong)下转(zhuan)(zhuan)动(dong)(dong)，同时电(dian)(dian)(dian)机(ji)自带的(de)(de)编(bian)码(ma)器(qi)反馈信号(hao)给驱(qu)(qu)动(dong)(dong)器(qi)，驱(qu)(qu)动(dong)(dong)器(qi)根据反馈值(zhi)与目标值(zhi)进行比较(jiao)，调整转(zhuan)(zhuan)子(zi)转(zhuan)(zhuan)动(dong)(dong)的(de)(de)角度(du)。伺(si)(si)(si)(si)(si)(si)服(fu)(fu)电(dian)(dian)(dian)机(ji)的(de)(de)精度(du)决定(ding)于编(bian)码(ma)器(qi)的(de)(de)精度(du)（线数）。交(jiao)(jiao)流(liu)(liu)伺(si)(si)(si)(si)(si)(si)服(fu)(fu)电(dian)(dian)(dian)机(ji)和(he)无刷直(zhi)流(liu)(liu)伺(si)(si)(si)(si)(si)(si)服(fu)(fu)电(dian)(dian)(dian)机(ji)在功(gong)能上的(de)(de)区别：交(jiao)(jiao)流(liu)(liu)伺(si)(si)(si)(si)(si)(si)服(fu)(fu)要好一些(xie)，因(yin)(yin)为(wei)是(shi)(shi)正弦波(bo)控制，转(zhuan)(zhuan)矩脉动(dong)(dong)小(xiao)。直(zhi)流(liu)(liu)伺(si)(si)(si)(si)(si)(si)服(fu)(fu)是(shi)(shi)梯形波(bo)。但直(zhi)流(liu)(liu)伺(si)(si)(si)(si)(si)(si)服(fu)(fu)比较(jiao)简单，便(bian)宜！伺(si)(si)(si)(si)(si)(si)服(fu)(fu)电(dian)(dian)(dian)机(ji)轴(zhou)承(cheng)过热的(de)(de)缘由：轴(zhou)承(cheng)选用(yong)(yong)不当(dang)！连云(yun)港三(san)菱伺(si)(si)(si)(si)(si)(si)服(fu)(fu)控制

通常根据伺服(fu)驱动机的(de)种类来(lai)分类，有(you)电气(qi)式(shi)、油压式(shi)或电气(qi)—油压式(shi)三(san)种。合肥三(san)菱伺服(fu)企业

与此同时，由于(yu)各种行(xing)业(ye)的(de)(de)(de)(de)(de)特(te)殊需(xu)求(qiu)，伺(si)服(fu)(fu)(fu)电(dian)(dian)机(ji)(ji)也(ye)会从通(tong)(tong)用(yong)的(de)(de)(de)(de)(de)FA行(xing)业(ye)转向(xiang)差异化，定(ding)向(xiang)设(she)计(ji)的(de)(de)(de)(de)(de)道路(lu)。如(ru)免维修、无(wu)尘、防爆、无(wu)转矩(ju)脉动(dong)超高或(huo)较低额定(ding)转速(su)微小型(xing)化，电(dian)(dian)机(ji)(ji)内部直(zhi)接(jie)装有(you)制动(dong)器(qi)、减速(su)机(ji)(ji)、滚珠丝杠、联轴节、转矩(ju)温度(du)传(chuan)感器(qi)，编码(ma)器(qi)甚至驱(qu)动(dong)控(kong)制器(qi)的(de)(de)(de)(de)(de)ALLINONE一体化的(de)(de)(de)(de)(de)伺(si)服(fu)(fu)(fu)功(gong)能部件。事实上，在(zai)传(chuan)统(tong)(tong)的(de)(de)(de)(de)(de)FA行(xing)业(ye)以(yi)外，特(te)别是(shi)在(zai)家电(dian)(dian)、汽车电(dian)(dian)子(zi)、纺织、航空电(dian)(dian)子(zi)、机(ji)(ji)械等行(xing)业(ye)，各种直(zhi)流无(wu)刷伺(si)服(fu)(fu)(fu)电(dian)(dian)机(ji)(ji)已(yi)经得到了普(pu)遍和大量的(de)(de)(de)(de)(de)应用(yong)。传(chuan)统(tong)(tong)意义(yi)上的(de)(de)(de)(de)(de)带换向(xiang)器(qi)的(de)(de)(de)(de)(de)直(zhi)流伺(si)服(fu)(fu)(fu)电(dian)(dian)机(ji)(ji)正在(zai)被这种直(zhi)流无(wu)刷的(de)(de)(de)(de)(de)伺(si)服(fu)(fu)(fu)电(dian)(dian)机(ji)(ji)所取代。尤(you)其(qi)在(zai)微小功(gong)率的(de)(de)(de)(de)(de)应用(yong)范围，它有(you)无(wu)可替代的(de)(de)(de)(de)(de)低成(cheng)本、小体积、高可靠(kao)性（通(tong)(tong)常无(wu)需(xu)光电(dian)(dian)编码(ma)器(qi)反馈），可干电(dian)(dian)池(chi)供电(dian)(dian)等优越性。所以(yi)其(qi)实际使用(yong)数(shu)量将是(shi)非(fei)常可观的(de)(de)(de)(de)(de)；合肥三(san)菱伺(si)服(fu)(fu)(fu)企(qi)业(ye)

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