Quote:
Originally Posted by Dave Otis
... (I'm curious how the stall torque increases with voltage--does it scale proportionately?)
|
Yes, stall torque does scale proportionally with voltage, because increasing the supply voltage will increase the stall current.
Torque-per-ampere does not scale; it is the same constant (given by the magnetic flux linkage, which of course does not change) for all voltages.
When I get some time I will create a reduced version of the measured curves for speed vs. torque and power vs. torque, at each of the test voltages for each motor. We recorded too many data points to include the raw file.
__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)