要清楚 负载的大小 ( E- f3 ]) n( S$ M, p5 gand then choose an actuator or pistion ) ~, D! b5 A2 n' t9 ~8 v& g" F $ @2 E& A' \, F. c2 ~establish the flow and pressure profile3 z9 {2 y' O. J8 h3 g* B: F# Z- t
6 b1 ^0 d+ M2 _. bfind out the horsepower you need : K" \3 N6 c0 h! l8 K) h9 ?0 h; i; o+ U) O
be careful about the acceleration and deceleration period 3 g6 q4 n% h' }: J2 N & M- o2 p. M. Kquite agree with #2