19
12.2 Exercise
Let’s check if a selected actuator supports a given operation pattern by using the selection procedure
explained above.
Operating conditions
• Model: Ultra high-thrust actuator
with 1.25 (2t) lead
• Mounting position: Vertical
• Speed: 62 mm/s
• Acceleration/deceleration: 98 mm/s
2
(0.01 G)
• Travel distance: 50 mm
• Loaded mass: 100 kg
• Push command value: 200% (2000 kgf)
• Push time: 3 s
• Standby time: 2 s
• Move 50 mm downward, perform push-motion
operation, move 50 mm upward, and stand by for 2
sec. The operating conditions for upward and
downward movements are the same.
The graph on the right illustrates the above operation
pattern.
Now, calculate the necessary values by following the selection procedure.
Condition [1] Check the push-motion operation time.
From Table 1 on p. 15, the push time is 3 seconds as opposed to the maximum push time of 13 seconds
corresponding to the push command value of 200%. Accordingly, the push time condition is satisfied
.
* 1 G = 9.8 m/s
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