Three acts in one interactive article: a resolver stores angle as a sine in copper, a tracking observer recovers angle and speed without ever differentiating, and a production pipeline - calibration, a second speed observer, latency extrapolation - carries it to the Park transform.
Read →Torque is the inner product of EMF and current. What that one sentence predicts about running field-oriented control on a trapezoidal machine - the 6th-harmonic ripple, why block commutation's ‘perfect’ torque isn’t, and how harmonic injection cancels the residual.
Read →An experience report on Andrej Karpathy's LLM Wiki pattern: a Claude-maintained wiki, its structure, and why curation-at-ingest beat retrieval-at-query.
Read on Substack ↗