Load on the Arm
When you attach a camera, valve or other devices to the arm, calculate the weight as the equivalent of the shaft. Then, add this to the weight of the load attached to the shaft, and enter the total weight to the Weight parameter.
Equivalent Weight Formula
WM=M(LM+L1)2/(L1+L2)2
| WM | equivalent weight |
| M | Load on the Arm |
| L1 | Arm 1 length |
| L2 | Arm 2 length |
| LM | Distance from rotation center of Joint #2 to center of gravity attached to the Arm. |
W=1
M=1
L1=375
L2=275
LM=375
WM=1×(375+325)2/(325+275)2=1.26 (Round up to two decimal)
W+WM=1+1.36=2.36
Enter “2.36” for the Weight Parameter.
| Symbol | Description |
|---|---|
| a | Shaft |
| b | Weight of the entire camera |
| c | Joint #1 |
| d | Joint #2 |