要清楚 负载的大小 # U( `) M5 l( T. A4 i D" Rand then choose an actuator or pistion# r9 d! t3 N' F v* Z
1 g$ l' w- z5 f: aestablish the flow and pressure profile! j, d. E; x/ V( i r9 g2 Y# D2 z3 [6 v# k
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find out the horsepower you need % K( v$ i4 ` v. E$ {
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be careful about the acceleration and deceleration period$ N2 q% Q) y- [& K