要清楚 负载的大小 6 A7 Q9 ]/ i _and then choose an actuator or pistion/ A1 k9 T3 k$ e
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establish the flow and pressure profile 8 z% d/ z. a3 X+ L4 g* {/ ?, D, X }0 @
find out the horsepower you need ' A9 j6 t! D6 E( f9 i5 D+ W / c+ Z- u# a" X8 i; Q$ Xbe careful about the acceleration and deceleration period) m( M+ z& i: m+ ]; {