Adept Lynx Platform User's Guide, Rev D
Page 44 of 126
Chapter 4: Payload Structures
NOTE:î ±In the following table, 50% is 900 mm/sec., 100% is 1800 mm/sec.
Table 4-1. Typical Watts Drawn
% Speed
kg 50 100
0 80 107
60 94 125
To calculate your estimated run-time:
1.
Find the closest match to your payload structure weight and average driving speed, as
a percentage of full speed.
This will be a value in Watts.
2.
Add the power used by all electrical devices on your payload structure, in Watts.
It is unlikely that any electrical device on your payload structure will operate con-
tinuously, so you need to figure out what average percent of the time it will operate, and
multiply that by the Watts of the drain to get an average drain factor.
3.
Divide 1500 W*hr by that value, in Watts.
This will yield your estimated run-time, in hours.
Example Calculation
If your payload structure weighs 60 kg, and you expect to run at an average of 50% full speed,
you would use the value of 94 from the table.
If your payload structure includes a device that draws 150 watts half of the time, add 75
(150*50%) to 94, to get 169 Watts, total.
Dividing 1500 W*hr by 169 Watts yields:
1500 W*hr/169 W = 8.87 hr of estimated run-time.
Payload Bay Access
The area between the Lynx platform and your payload structure is the payload bay. You will
occasionally need to access the Lynx platform and the connectors in the payload bay. This is
where you can access all of the platform power and I/O connectors. It's a good idea to provide
for access to this when designing your payload structure.
If the payload structure is small and light enough, it can just be lifted off of the platform to
access the connectors in the payload bay. Care should always be taken not to damage any wir-
ing between your payload structure and the platform.
A larger, heavier payload structure may need some form of hinge, so that the payload struc-
ture can be tilted out of the way while you access the payload bay. Consideration should be
given to harness length and position so that this can be accomplished without disconnecting
or damaging any connectors or harnesses.
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