伺(si)(si)服(fu)压(ya)(ya)力(li)(li)机通常指(zhi)采用(yong)伺(si)(si)服(fu)电机进行(xing)(xing)驱动控(kong)制的(de)压(ya)(ya)力(li)(li)机。包(bao)括金属锻压(ya)(ya)用(yong)伺(si)(si)服(fu)压(ya)(ya)力(li)(li)机及耐火材料等行(xing)(xing)业专(zhuan)用(yong)伺(si)(si)服(fu)压(ya)(ya)力(li)(li)机。因伺(si)(si)服(fu)电机的(de)数控(kong)化(hua)特(te)点，有时(shi)也广泛称其为数控(kong)压(ya)(ya)力(li)(li)机。

伺(si)(si)服(fu)电(dian)动缸是将伺(si)(si)服(fu)电(dian)机与丝杠(gang)一体(ti)化设计的(de)模块化产(chan)品，将伺(si)(si)服(fu)电(dian)机的(de)旋转(zhuan)运(yun)动转(zhuan)换成直线(xian)运(yun)动，同时(shi)将伺(si)(si)服(fu)电(dian)机最佳(jia)优点(dian)-精(jing)(jing)确转(zhuan)速控(kong)(kong)制(zhi)，精(jing)(jing)确转(zhuan)数控(kong)(kong)制(zhi)，精(jing)(jing)确扭矩(ju)控(kong)(kong)制(zhi)转(zhuan)变成-精(jing)(jing)确速度控(kong)(kong)制(zhi)，精(jing)(jing)确位置控(kong)(kong)制(zhi)，精(jing)(jing)确推力(li)控(kong)(kong)制(zhi)；实现高(gao)精(jing)(jing)度直线(xian)运(yun)动系列(lie)的(de)全新(xin)革(ge)命性产(chan)品。

以气缸为代表的气动(dong)(dong)执(zhi)行(xing)(xing)器(qi)(qi)在工业自动(dong)(dong)化领(ling)域发挥着重要的作用。而(er)在能源问题突出，国家又提倡建设(she)绿(lv)色环(huan)保生(sheng)产(chan)线的今天，气动(dong)(dong)执(zhi)行(xing)(xing)器(qi)(qi)效(xiao)率偏(pian)低，运行(xing)(xing)能耗(hao)成本高昂等问题引(yin)起了(le)人们的关注。相对于气动(dong)(dong)执(zhi)行(xing)(xing)器(qi)(qi)，电动(dong)(dong)执(zhi)行(xing)(xing)器(qi)(qi)具有能量转化率高，运行(xing)(xing)成本低等优点。