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Engineering a More Sustainable Future | ADI
Table 1: Measured Execution Times
The second set of measurements was made to evaluate power
losses along the transmission path when using PoDL to supply
remote devices. Tests were conducted by substituting the motion
controller shield with an electronic load set at different currents,
starting from 0.1 A up to 0.5 A in steps of 100 mA, to determine which
components had a major impact on power losses and, consequently,
how to improve the design to achieve higher current ratings.
Command
Execution
Time (ms)
Cumulative
Delay Time
(ms)
Optimal
Execution
Time (ms)
Synchronized motion,
two motors (×24 TMC5160
register accesses)
24.058 24.000 0.058
Motor data request
(×3 TMC5160 accesses)
3.109 3.000 0.109
Dummy data request
(no TMC5160 interactions)
0.080 0 0.080
Current (A)
Input Power
(W)
Output Power
(W)
Efficiency
0.109 2.61 2.47 0.95
0.200 4.70 4.45 0.93
0.308 7.37 6.70 0.91
0.399 9.54 8.51 0.89
0.502 12.00 10.45 0.87
Table 2: System Efficiency
Adobe Stock / WilliamJu – stock.adobe.com
Adobe Stock / Kadmy – stock.adobe.com
