kcg 8 w100 z m u h1 10比例阀当负载为零的时候,如果四通滑阀完全打开,p口压力=t口压力+阀口压力损失(忽略油路上的其它压力损失),如果阀口压力损失很小,t口压力又为零,那么p口的压力就不足以供给前置级阀来推动主阀芯,整个伺服阀就失效了。所以伺服阀的阀口做得偏小,即使在阀口全开的情况下,也要有一定的压力损失,来维持前置级阀的正常工作。
伺服阀其实缺点极多:能耗浪费大、容易出故障、抗污染能力差、价格昂贵等等等等,好处只有一个:动态性能是所有液压阀中Zui高的。就凭着这一个优点,在很多对动态特性要求高的场合不得不使用伺服阀,如飞机火箭的舵机控制、汽轮机调速等等。动态要求低一点的,基本上都是比例阀的天下了。
一般说来,好像伺服系统都是闭环控制,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,控制比伺服要灵活一些。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,响应要慢。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!
kcg 3 l350d z m u hl1 10 p15 t 10
kcg 3 l350d z m u hl1 10 p15 t 12
kcg 3 l350d z m u hl1 10 p15 t 13
kcg 3 l40d z m u h1 10
kcg 6 w 160 1 z mu hl1 1 0
kcg 6 w100 1 z m u h1 10
kcg 6 w100 3 z m u h1 10
kcg 6 w100 3 z m u hl1 1 0
kcg 6 w100 z m u1 h1 10
kcg 6 w160 1 z m u h1 10
kcg 6 w160 3 z m u hl1 1 0
kcg 6 w160 3 z mu h1 10
kcg 6 w160 z m u h1 10
kcg 6 w250 1 z m u h1 10
kcg 6 w250 1 z m u hl1 1 0
kcg 6 w250 1 z mu1 h1 10
kcg 6 w250 3 z mu h1 10
kcg 6 w250 3 z mu hl1 10
kcg 6 w250 z m p h1 10 e n46
kcg 6 w250 z m u h1 10
kcg 6 w250 z m u hl1 10
kcg 6 w250 z m u1 h1 10
kcg 6 w250 z m u1 hl1 10
kcg 6 w350 1 z m u hl1 1 0
kcg 6 w350 1 z mu h1 10
kcg 6 w350 3 z m u hl1 1 0
kcg 6 w350 3 z m u1 ha1 10
kcg 6 w350 z m u h1 10
kcg 6 w350 z m u hl1 10
kcg 6 w350 z m u1 h1 10
kcg 6 w40 3 z m u h1 10
kcg 6w 350 3 z mu h1 10
kcg 8 w 160 1 z mu hl1 1 0
kcg 8 w100 1 z mu h1 10
kcg 8 w100 3 z m u hl1 1 0
kcg 8 w100 z m u h1 10
kcg 8 w160 1 z m u h1 10
kcg 8 w160 3 z m u h1 10
kcg 8 w160 3 z m u hl1 1 0
kcg 8 w250 1 z m u h1 10
kcg 8 w250 1 z m u hl1 1 0
kcg 8 w250 1 z mu1 h1 10
kcg 8 w250 3 z m u h1 10
kcg 8 w250 3 z m u hl1 1 0
kcg 8 w250 z m u h1 10
kcg 8 w250 z m u hl1 10
kcg 8 w350 1 z m u h1 10
kcg 8 w350 1 z m u hl1 1 0
kcg 8 w350 3 z m u h1 10
kcg 8 w350 3 z m u hl1 1 0
kcg 8 w350 z m u h1 10
kcg 8 w40 3 z m u h1 10
kcg 3 l160d z m u h1 10
kcg 3 l160d z m u h1 10 p 15 t10
kcg-3-100d-z-m-u-hl1-10- p15-t10
kcg-3-350d-z-m-u1-h1-10
kcg-3-350d-z-m-u1-h1-10- t09
kcg-3-350d-z-m-u-gp1-10- p15-t12
kcg-3-350d-z-m-u-h1-10-p 10l-t12
kcg-3-l100d-z-m-p-h1-10- en46
kcg-3-l100d-z-m-u-h1-10 p18-t15
dg4v-3-6c-vm-u-h7-60
dg4v-3-6n-m-ftwl-b6-60
dg4v-3-7c-m-u-d6-60
dg4v-3-8c-m-p7-h-7-50
dg4v-3-8c-vm-u-c6-61
dg4v-3-8c-vm-u-c6-61
dg4v-3s-0b206-m-u-h5-60-en493
dg4v-3s-0c-m-u-h5-60
dg4v-3s-2a-m-ftwl-b5-60
dg4v-3s-2a-m-ftwl-h5-60
dg4v-3s-2a-muc560
dg4v-3s-2a-m-u-g5-60
dg4v-3s-2b200-m-u-sh5-60
dg4v-3s-2n-m-u-b5-60
dg4v-3s-2n-vm-u-h5-60
dg4v-3s-6c-m-u-b5-60
dg4v-3s-6c-m-u-h5-60
dg4v-3s-obl-m-fpa5wl-d5-60
dg4v4-012c-m-u-h-5-10
dg4v4-012n-m-pbwl-b-5-10
dg4v-5-0a-m-u-h6-20
dg4v-5-0c-mu-a6-20
dg4v-5-0c-m-u-ed6-20
dg4v-5-2aj-z-m-u-h6-20
dg4v-5-2a-mp7-lb6-40
dg4v-5-2a-m-p7l-h-7-40
dg4v-5-2a-mu-a6-20
dg4v-5-2a-m-u-c6-20
dg4v-5-2a-m-u-eh6-20
dg4v-5-2a-vm-u-c6-20
dg4v-5-2b-m-pl-b-6-40
dg4v-5-2c-m-u-a6-20
dg4v-5-2c-m-u-eh6-20
dg4v-5-2nj-m-u-h6-20
dg4v-5-2n-m-p7l-h-740
dg4v-5-2n-m-p7l-h-7-40
dg4v-5-2n-m-u-c6-20
dg4v-5-2n-m-u-ek6-20
dg4v-5-33cj-muh620-j99
dg4v-5-33cj-vm-u-h6-20
dg4v-5-33c-m-p7l-h7-40
dg4v-5-33c-m-p7l-h740
dg4v-5-6cj-h-vm-u-h6-20
dg4v-5-6c-m-p7l-h-7-40
dg4v-5-6c-mu-ek6-20
dg4v-5-8cj-vm-u-h6-20
dg5s4 042 t 60 en546 02-343299
dg5s-8-2a-k-m-fw-b5-30
dg5s-8-2a-m-fw-b5-30
dg5s-8-6c-m-u-h5-30
dg5s-h8-0c-e-m-u-b5-50
dg5s-h8-2c-2-t-m-u-h5-50
dg5s-h8-4c-e-vm-u-a5-50
dg5s-h8-4c-e-vm-u-a5-50
dg5s-h8-4c-e-vm-u-h5-50
dg5v-10-s-33c-h-3-e-m-ft-wl-h-10
dg5v-5-2n-t-m-u-c5-20
dg5v-7-2c-3-e-m-ftwl-h5-40
dg5v-7-2c-t-m-u-h5-40
dg5v-7-2n-2-m-u-h5-40
dg5v-7-2n-3-e-m-u-a6-30
wdke-1711 24vdc
wdp-2751/2-10
wdke-1631/2 220v
wdhe-0713p 220v
wdhe-0631/2 220v
wkm-011/350
wdke-1713-p24dc
wdke-1631/2-p24dc
wdhe-0631/2-p24dc
wdke-1711-p24dc
wgam-10/11/210-p24dc
wdke-1631/2-p24dc
wdphe-2713/d-p24dc
wjpr-212
wkr-012
wkm-015/210
wgam-10/100
wgam-20/11/210-p24dc
wdr25a1-10
wkg-031/210
wmap-320
rexroth泵 a10vs045drg/31r-vpa12n00
rexroth a2fo12/61r-ppb06
d661-4469c/g75j0aa6vsx2ha
g123-815a001
rexroth dbw10-b1-52/200-6aw220-50nz4
4we6j62/eg24n9k4
4we66d6x/sg24nz5l
4we6d62/0fg24n9k4
0810091212
0810091227
081wv06p1v1012ws024/0000
0810091227
0810091207
4we6y62/eg28n9k4
g122-824-002
sdhi-071323
g761-3004
sd6202d20 aa
sin45v-g24
am22061a-g24
sdspm22-ba-g24/md35
sdspm22-ab-g24/kd35
sdspm22-ba-g24/kd35
as32060b-g24
bvepm22-160-g24
mvspm22-160
as32061a-g24
d41ftb32fc1ng00
d41ftb32fc1vf00
d41ftb32fc2nf00
d41ftb32fc2ng00
d41ftb32fc4nf00
d41ftb32fc4ng00
d41ftb32fc5nf00
d41fte01fc1nf00
d41fte01fc1ng00
d41fte01fc1vf00
d41fte01fc2nf00
d41fte01fc2ng00
d41fte01fc4nf00
d41fte01fc4nf08
d41fte01fc4ng00
d41fte02fc1nf00
d41fte02fc1ng00
d41fte02fc1vf00
d41fte02fc2nf00
atos dha-0631/2/m/7 24dc
威格士 dg4v 3 6c m u d6 60
威格士 dg4v-5-2cj-m-u-h6-20
威格士dgmfn-5-y-a2w-b2w-30
ds3-rk/11n-d24k1
ds3-s4/10n cm
ds3-s4/11n-a230k1
psp2/21n-k1/k
m4c-027-3n02-a1m4
m4c-031-3n02-a1m4
m4c-055-3n02-a1m4
mac 35a-aca-daba-1ba