G761-3002B优势现货G761-3002
武穴黎翔机电设备有限公司,询价联系人:何女士
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现货特价型号:4WEH16E7X/6HG24N9ETK4/B10 2台
比例多用于开环控制;其次比例阀类型要多,有比例压力、流量控制阀等,控制比伺服药灵活一些。从他们内部结构看,伺服阀多是零遮盖,比例阀则有一定的死区,控制精度要低,向应要慢。但从发展趋势看,特别在比例方向流量控制阀和伺服阀方面,两者性能差别逐渐在缩小,另外比例阀的成本比伺服阀要低许多,抗污染能力也强!
伺服阀与比例阀的区别
伺服阀与比例阀之间的差别并没有严格的规定,因为比例阀的性能越来越好,逐渐向伺服阀靠近,所以近些年出现了比例伺服阀。
非要说差别,主要体现在一下几点:
1.伺服阀中位没有死区,比例阀有中位死区;
2.伺服阀的频响(响应频率)更高,可以高达200Hz左右,比例阀一般最高几十Hz;
3.伺服阀对液压油液的要求更高,需要精过滤才行,否则容易堵塞,比例阀要求低一些。
比例伺服阀性能介于伺服阀和比例阀之间。
SDPHI-3711/D-X 24DC,
SDPHI-3713/E-X 230/50/60AC 53,
SDPHI-3713/E-X 24DC 53,
SDPHI-3713-X 24DC 53,
SDPHI-3714/8/DE-X 24DC,
SDPHI-3714/8/E-X 24DC,
SDPHI-3714/DE-X 24DC
DPHI-1614/AD-X 24DC,
DPHI-1631/2/DE-X 24DC,
DPHI-1711/D-X 24DC 40,
DPHI-1713/DH-X 24DC,
DPHI-1713/D-X 230/50/60AC,
DPHI-1713/D-X 24DC 40,
DPHI-1713-X 24DC,
DPHI-2611/DS-X 24DC 31,
DPHI-2611/D-X 24DC 31,
DPHI-2613/AD-X 24DC 31,
DPHI-2613/A-X 24DC 31,
DPHI-2613/D-X 24DC 31,
DPHI-2613-X 24DC,
DPHI-2630/2/E-X 24DC 31,
DPHI-2631/2/A-X 24DC 31,
DPHI-2631/2/D 24DC 31,
DPHI-2631/2/DH9RWP-X 24DC 31,
DPHI-2631/2/D-X 24DC 31,
DPHI-2631/2/E-X 24DC,
DPHI-2631/2/FI/NC-X 24DC 30,
DPHI-2631/2-X 24DC 31,
DPHI-2671/DS-X 24DC 31,
DPHI-2701/DH-X 24DC 31,
DPHI-2701/R-X 24DC 31,
DPHI-2711/DS-X 230/60AC 31,
DPHI-2711/D-X 230/50/60AC,
DPHI-2711/D-X 24DC,
DPHI-27116-X 24DC,
DPHI-2711-X 24DC,
DPHI-2713/D-X 24DC
,DPHI-2713-X 24DC,
DPHI-2716/H9-X 24DC,
DPHI-27193/HWP-X 24DC 31,
DPHI-2751/2/D-X 24DC 31,
DPHI-2751/2-X 24DC 31,
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DPHI-3630/2/D-X 24DC 53,
DPHI-3631/2/E-X 24DC,
DPHI-3631/2/FI/NC-X 24DC 52,
DPHI-3631/2-X 24DC 53,
DPHI-3710/D-X 24DC,
DPHI-3711/1/D-X 24DC,
比例换向阀属于比例阀的一种,用来控制流量和流向。
小机调门控制原理 小机调门属于PID复合控制,由主调节转速回路和副调节LVDT回路组成。LVDT回路只存在比例作用,可以在调门出现扰动的情况下及时迅速的消除扰动,同时也作为主回路的执行单元,所以回路中不得加入积分作用,防止主副回路双积分作用增大系统动态调整时间。控制原理图如下所示: 武穴黎翔机电设备有限公司。美国穆格MOOG销售热线.,询价
PI P LVDT 指令转速 实际转速 + -+- S 其中PI作用在逻辑中设置,可以通过改变逻辑中PI模块的比例和积分系数,改变主回路的控制特性;P作用在
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