Process Analytical Technology: SPC Control Chart & Feedback Correction (2D)

This 2D companion strips the 3D reactor scene down to the statistics that actually drive a PAT loop: a real individuals control chart with moving-range sigma estimation, real UCL/LCL control limits, live Western Electric / Nelson out-of-control rules, and — when an alarm fires in closed-loop mode — a real proportional feedback correction that pulls the monitored quality attribute back to its setpoint, all through independently adjustable process noise, control-limit width and controller gain.