要清楚 负载的大小 / r9 z; Y+ x+ l3 C# M% H0 Y/ sand then choose an actuator or pistion - X. E, O* q! m$ C# J6 |+ z9 e 4 d! o. p/ g# Y/ i" D# U# H1 @2 Iestablish the flow and pressure profile $ a$ d, j. E" e4 o& w7 c9 |) }, d" J- z; ~, _ b% Q+ \) c
find out the horsepower you need ( c( {! Q- \! a2 s; H
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be careful about the acceleration and deceleration period $ p3 M% u+ F3 z6 w+ K2 o: e/ z3 m$ L) B
quite agree with #2