Cogging torque shows some ripple at 2x electrical frequency as well as a higher frequency component. Total cogging amplitude is plus or minus .025 N-m. Bumping up the Q-amps, overall amplitude of torque ripple doesn’t change too much over cogging torque, but becomes noticeably spikier.
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
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