EngineeringFebruary 12, 202636 min read

Engineering Case Study: Quality Gate Control Theory for Manufacturing AI

Applying established control theory, R2R-aware manufacturing practice, and MARIA OS audit gates to simulated semiconductor quality cascades

Manufacturing AI systems face a stability problem that traditional software governance often does not: defect rates evolve as continuous dynamical variables under material variation, tool wear, and environmental drift. This engineering case study applies established PID, Lyapunov, and BIBO analysis to quality gates, positions the approach against semiconductor run-to-run control, and shows how MARIA OS adds fail-closed escalation, evidence bundles, and audit coordinates. The reported 94.7% defect containment, sub-200ms gate response, and 0.12x/stage attenuation are simulation results on a tuned linear model, not production fab measurements.

manufacturingquality-gatecontrol-theorystability-analysisreal-timedefect-rategovernance
Industry ApplicationsFebruary 12, 202636 min read

Safety-First Minimax Production: Optimizing Throughput Under Hard Safety Constraints

Minimizing safety risk subject to throughput maximization constraints using minimax optimization and responsibility-gated production decisions

Manufacturing throughput and worker safety are often treated as competing objectives. This paper introduces a minimax formulation that prioritizes worst-case safety risk minimization subject to throughput-floor guarantees. The Lagrangian dual form yields gate-threshold rules for production decisions, and MARIA OS responsibility gates enforce hard safety overrides at each node. In an automotive assembly-line simulation, the framework reported 99.7% safety compliance with a 3.2% throughput reduction versus unconstrained production.

manufacturingsafetyminimaxthroughput-optimizationproductionrisk-managementgovernance