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PID in Python: Speed Control of a Real DC Motor
We designed a speed controller for a real motor, the ABB Baldor-Reliance CDP3306 (¼ HP, 180 V, 1750 rpm), using only Python and its datasheet. The result settles a 1000 rpm step in 75 ms with no overshoot, a 76° phase margin, and a peak demand of 117 V from a 180 V drive. Everything…
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PID Control, Demystified
A PID controller acts on three views of the same error: its size now (P), its history (I) and its rate of change (D). Getting the gains right is only half the job. Real hardware adds actuator limits, sensor noise and sampling, and each one breaks the textbook law in a predictable way. This post…
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Model-Based Controller Development: From Requirements to Real Hardware
Model-based development takes a controller from requirements to real hardware in eight stages, and it catches most problems before any hardware is at risk. You design against a model of the system, then verify the same design again at every step as it turns into code and runs on real electronics. This post walks through…
