要清楚 负载的大小 b: l& w7 g9 S4 N$ [% C
and then choose an actuator or pistion z3 ^+ ]) o& p 2 D* h& c( ^# H* f' ?1 Nestablish the flow and pressure profile. `- I" ~0 n/ W! I" g) X5 {& I
. W' o1 u, x- L- Cfind out the horsepower you need ( O# X$ B3 p# _% ^5 G
/ t, v) J0 [3 @) `9 ]5 ]8 _0 xbe careful about the acceleration and deceleration period ! o* Y! ^ z* S( Q9 Y - \! ?9 i" i6 s( Q( i. Q6 bquite agree with #2