IAI America LSA-W21SS - Manual (Page 32)

18
10.1 Selection Method
Condition [1]: Maximum thrust
For the slider to accelerate according to a command, the thrust required for acceleration, or Fa, must be
smaller than the maximum thrust of the large linear servo actuator.
Thrust Fa is calculated using the equation below:
Here,
M: Slider
weight
m: Slider load (kg)
a: Commanded acceleration (m/s
2
)
Ff: Traveling resistance (N)
In the case of a large linear servo actuator, the traveling resistance is determined by the speed and
empirically calculated as specified below.
[Traveling resistance of large linear servo actuator]
Ff = 20 V + 70
V: Slider speed (m/s)
If the obtained Fa is smaller than the maximum thrust of the large linear servo actuator, condition 1 is
satisfied.
Large linear servo actuator LSA-W21SS, LSA-W21SM Maximum thrust
 600 N
Large linear servo actuator LSA-W21HS, LSA-W21HM Maximum thrust
 1200 N
[Slider weight]